List of Air Ministry specifications




This is a partial list of the British Air Ministry (AM) specifications for aircraft. A specification stemmed from an Operational Requirement, abbreviated "OR", describing what the aircraft would be used for. This in turn led to the specification itself, e.g. a two-engined fighter with 4 machine guns. So for example, OR.40 for a heavy bomber led to Specification B.12/36. Aircraft manufacturers would be invited to present design proposals to the Ministry, following which prototypes of one or more of the proposals might be ordered for evaluation. On very rare occasions, a manufacturer would design and build an aircraft using their own money as a "Private Venture" (PV). This would then be offered to the Ministry for evaluation. If the aircraft generated interest in the Ministry or RAF due to performance or some other combination of features then the Ministry might well issue a specification based on the Private Venture aircraft.[1]


The system of producing aircraft to a specification ran from 1920 to 1949 during which the Air Ministry was replaced by first the Ministry of Aircraft Production (MAP) in 1940 and then the Ministry of Supply (MoS) in 1946. The system was applied to commercial aircraft as well, two being the de Havilland Comet and Vickers Viscount. During the period, over 800 specifications were issued.[1]




Contents






  • 1 Specification designations


  • 2 List of specifications (incomplete)


    • 2.1 Air Board Specifications (1917–1918)


    • 2.2 RAF Specifications (1918–1920)


    • 2.3 1920–1929


    • 2.4 1930–1939


    • 2.5 1940–1949




  • 3 Post 1949 Specifications and Air Staff Operational Requirements/Targets (OR/ASR/AST)


  • 4 Naval Requirement/Aircraft (N.A.) and Naval Staff Requirements (NSR)


  • 5 General Staff Requirements (GSR) For Aircraft


  • 6 See also


  • 7 Notes


  • 8 References


  • 9 External links





Specification designations


Each specification name usually followed a pattern. A leading letter was usually present to identify the aircraft purpose. The codes used included B for "heavy bomber", e.g., B.12/36, P for "medium bomber", e.g., P.13/36, F for "fighter", e.g., F.10/35, and A for "army co-operation", e.g., A.39/34. The second part was a number identifying it in sequence and then after the slash, the year it was formulated, so in the example given above, B.12/36 signifies a specification for a heavy bomber, the twelfth specification of all types issued in 1936. Specifications were not always issued in sequence.[1]


Admiralty specifications were identified by the letter N (Naval), e.g., N.21/45, and experimental specifications identified by the letter E (Experimental), e.g., E.28/39, with training aircraft signified by the letter T (Training), e.g., T.23/31, and unpowered aircraft, signified by the letter X, e.g., X.26/40. The letter G (General) signified a general-purpose aircraft, e.g., G.9/45, with an M (Multi-role) being applied to aircraft intended for more than one specific purpose, e.g., M.15/35.[1]


The letter C (Cargo) was applied to military transport aircraft, e.g., C.1/42, with the letter O (Observation) used for a naval reconnaissance aircraft, e.g., O.8/38 - the letter S (Spotter) used for the more specialised role of naval spotting, i.e., observing and reporting back the fall of naval gunfire, e.g., S.38/34 - and R (Reconnaissance) for a reconnaissance type - often a flying boat, e.g., R.3/33. Special purpose aircraft would be signified by a letter Q, this being used to specify aircraft such as target-tugs, radio-controlled target drones, etc., e.g., Q.32/55.[1]


Sometimes the purpose for which an aircraft is used in service would change from that for which the specification to which it was designed was issued, and so there are some discrepancies and inconsistencies in designation, the Royal Navy in particular liking to specify multiple roles for its aircraft in an attempt to make the best use of the necessarily limited hangar space onboard its aircraft carriers. In this case this resulted in several types designed to specifications originally intended to signify the naval Spotting role also being used for other purposes, e.g., S.15/33, resulting in the Blackburn Shark and Fairey Swordfish, the latter aircraft being primarily utilised as a torpedo bomber. Similarly S.24/37, which produced the Fairey Barracuda, again primarily designed for spotting, the dive bomber/torpedo bomber requirements being regarded as secondary when the specification was issued, but for which roles it was almost exclusively subsequently used, the original spotting requirement having been made obsolete with the introduction of radar.[1]


In addition, some (mostly early) specifications appear to have no letter prefix at all, e.g., 1/21, the Vickers Virginia III.[1]



List of specifications (incomplete)


The names of the aircraft shown in the table are not necessarily those they carried when provided for evaluation as at this point an aircraft would usually be referred-to as the Manufacturer X.XX/XX, e.g., the Avro B.35/46 – this is in addition to the manufacturer's own separate internal designation for the aircraft, e.g., Avro 698. With several manufacturers submitting designs to the same specification this could result in a number of different aircraft with the same X.XX/XX designation, e.g., Handley Page B.35/46, etc.[1]


Upon acceptance of the design(s) the final service names would usually be chosen by the Air Ministry when they placed a production order, in the above B.35/46 cases, where two aircraft were accepted to this specification, Vulcan and Victor respectively.[1]


Upon entering service, in the absence of any already-planned variants a new type would initially have no Mark Number after the aircraft name, being simply referred to as the Manufacturer Service-name, e.g., the Avro Anson, however upon acceptance of a new variant the previous (initial) version automatically became the 'Mark I', so in the example given, the previous (first) version of the Anson retrospectively became the Avro Anson Mk I upon acceptance of an Avro Anson Mk II. Sometimes planned variants would be later cancelled leading to 'missing' Mark Numbers, or the extent of the changes may have justified given the new variant a completely new name, e.g., the Hawker Typhoon II subsequently becoming the Hawker Tempest, or the Avro Lancaster B.IV & B.V entering service as the Avro Lincoln. In a few cases the same aircraft ordered with differing engines would be allocated separate names for each variant, e.g., Hawker Typhoon and Hawker Tornado, or the Handley Page Hampden and Handley Page Hereford. Typographical designation of Mark Numbers (Mk.) varied over time and inconsistencies are common, e.g., Mark II, Mk. II, II, etc. Initially Roman numerals were used, changing to Arabic numerals post-World War II, e.g., Supermarine Spitfire Mk I to Supermarine Spitfire Mk 24.[1]


Main article: British military aircraft designation systems

Note 1: where possible Mark Numbers are given here in this list in the form that was used at the time of acceptance. Variations may be encountered due to changes in format/typographical convention over time.


Note 2: due to mergers and amalgamations within the UK aircraft industry sometimes the name of the manufacturer changed over time, e.g., English Electric later became part of the British Aircraft Corporation (BAC), so the English Electric Lightning then became the BAC Lightning; the British Aircraft Corporation itself and Hawker Siddeley (HS) then later merged and became British Aerospace, subsequently becoming BAe (now BAE Systems). Thus the previously mentioned Avro Vulcan was subsequently referred-to as the Hawker Siddeley Vulcan; similarly, the Blackburn Buccaneer later became the Hawker Siddeley Buccaneer. Where possible, for clarity the aircraft in this list are listed under the ORIGINATING company's name or the name of the manufacturer under which it first entered production.


Specifications within the tables are listed in numerical order by year of issue; where a given number appears more than once, with one or more letter prefixes, the entries are presented in alphabetical order.



Air Board Specifications (1917–1918)


In 1917, the Air Board began to issue specifications for new aircraft on behalf of the Royal Flying Corps and Royal Navy Air Service,[2] with separate series for the RFC and Navy.[1][3]































RFC series[1]
Spec
 Type
 Designs
A.1A
 Single-seat fighter - Sopwith Camel replacement[4]
Austin Osprey,[5]Boulton & Paul Bobolink,[4]Nieuport B.N.1,[6]Sopwith Snipe[7]
A.1C
 Single-seat fighter - ABC Dragonfly engine, became RAF Type I specification.[8]
Nieuport Nighthawk
A.2B
 Single- or twin-engined day bomber[9]
Airco DH.10
A.3C
 Heavy bomber - superseded by RAF Type V[10]
 Abandoned








































Royal Navy Air Service series
Spec
 Type
 Designs
N.1A
 Single seat land or ship-based fighter.[11]
Beardmore W.B.IV,[12]Beardmore W.B.V,[13]Mann Egerton Type H[11]
N.1B
 Single-seat seaplane or flying boat fighter[14]
Blackburn N.1B,[15]Norman Thompson N.1B,[2]Supermarine Baby,[15]Westland N.1B,[16]Wight Triplane Flying Boat[2]
N.1B
 Single seat torpedo bomber[17]
Blackburn Blackburd,[18]Short Shirl[17]
N.2A
 Two-seat floatplane scout[19]
Fairey N.9,[20]Fairey N.10,[21]Short N.2A[19]
N.2B
 Two-seat floatplane bomber, 600 lb (270 kg) bombload.[22]
Fairey IIIB,[22]Short N.2B[23]
N.2C
 Twin engined patrol flying boat[24]
Norman Thompson N.2C


RAF Specifications (1918–1920)


Data from: The British Aircraft Specifications File[1]


















































































Spec
 Type
 Designs
Type I
 Fighter, ABC Dragonfly engine.[8]
Armstrong Whitworth Ara, BAT Basilisk, Nieuport Nighthawk,[8]Siddeley Siskin,[25]Sopwith Snapper,[26]Sopwith Snark[27]
Type IA
 Long-distance (high altitude)
BAT Bantam, Westland Wagtail
Type II
 Two-seat fighter
Bristol Badger
Type III
 Two-seat fighter
Austin Greyhound, Westland Weasel
Type IV
Type VI
 Twin-engined bomber
Avro 533 Manchester, Boulton Paul Bourges, de Havilland Oxford, Sopwith Cobham
Type VII
 Night Bomber
Nieuport London
Type VIII
 Bomber
Avro 533 Manchester, Boulton Paul Bourges, Bristol Braemar, de Havilland Oxford, Sopwith Cobham
Type IX
 Medium bomber
de Havilland Okapi
Type XI
 Heavy bomber
Siddeley Sinaia
Type XX

Gloster Nightjar
Type XXI
 Two-seat amphibian fighter
Bristol Type 35, Fairey Pintail
Type XXII
 Single-seat carrier based torpedo bomber (re-issued 1920)
Blackburn Blackburd, Short Shirl, 'Blackburn Swift'
Type XXX
 Flying boat[2]
Short Cromarty, Vickers Valentia
Type XXXII
 Prototype training seaplane[28]
 (cancelled 1918) - Short Sporting Type produced to this specification
Type XXXIII
 Four-engined long range flying boat[2]
Fairey N.4


1920–1929


Data from: The British Aircraft Specifications File[1]


















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































Spec
 OR
 Type
 Designs
1/20
 None
 First spec. issued: spares carrier
Bristol Type 37 Tramp
2/20
'Interim' single-engine heavy bomber
Avro Aldershot, de Havilland DH.27 Derby
3/20
Single-seat deck-landing torpedo-carrier – Spec. superseded by 32/22 (q.v.)
Blackburn Dart (modified), Handley Page H.P.19 Hanley
4/20
Long-distance photographic and reconnaissance aeroplane
Boulton & Paul Bolton
5/20
Troop Carrier Biplane
Bristol Type 56, Vickers Victoria
6/20
Vimy Ambulance
Vickers Vimy Ambulance
7/20
Fleet reconnaissance and fleet spotting amphibian[2]
Supermarine Seagull
8/20
3-seat reconnaissance aircraft for Army/Navy
Armstrong Whitworth Tadpole, Westland Walrus
9/20
Medium range postal monoplane
Parnall Possum, Boulton & Paul Bodmin
10/20
Cantilever monoplane
de Havilland Doncaster
11/20


Parnall Possum, Boulton & Paul Bodmin
1/21
Long-range bomber – Vickers Vimy replacement
Vickers Virginia III
2/21
Experimental single-seat convertible biplane/monoplane fighter/interceptor/two-seat reconnaissance-fighter aircraft – written for Bullfinch
Bristol Bullfinch
3/21
Naval Fleet spotter/reconnaissance aircraft
Avro Bison, Blackburn Blackburn
4/21
Small troop carrier
Vickers Vernon
5/21
Light day bomber - DH.9A replacement
Fairey Fawn
6/21
Postal aeroplane
Westland Dreadnought
7/21


Parnall Plover
8/21
Torpedo Aeroplane
Blackburn T.4 Cubaroo
9/21
Torpedo Aeroplane
Blackburn Dart production
10/21
Corps reconnaissance aircraft
Armstrong Whitworth Wolf, Hawker Duiker
11/21
Vimy ambulance
Vickers Vimy ambulance
12/21
Fleet spotting flying boat[29]
English Electric Ayr[2]
13/21


Handley Page H.P.20
14/21

Felixstowe F.5 replacement[30]
Supermarine Scylla
13/21
Cantilever monoplane
Handley Page H.P.20
14/21
Boat seaplane
Supermarine Scylla
15/21
Twin-engined bomber
Boulton & Paul P.19
16/21
Biplane transport
Handley Page W.8b
17/21
Biplane transport
Handley Page Type X, de Havilland DH.34
18/21
Passenger transport
Handley Page HP.18 Hanley / Handley Page HP.21 Hanley, de Havilland DH.32, Vickers Type 61 Vulcan
19/21
Two-seat reconnaissance aircraft - Bristol F.2B Fighter replacement
Short Springbok
20/21
High-altitude fighter
 cancelled
21/21
Spotting amphibian
Supermarine Seagull II[2]
22/21
Reconditioned F.2b
Bristol F.2b Fighter
1/22


Vickers Type 170 Vanguard
2/22


Vickers Viking V[2]
3/22
Two-seat fighter/reconnaissance powered by a supercharged engine – Bristol Fighter replacement
Bristol Type 84 Bloodhound
4/22
Reconditioning of DH.10
Airco DH.10 Amiens
5/22
Spare wing
de Havilland DH.29 Doncaster
6/22
Naval carrier fighter with interchangeable wheel & float undercarriages using Armstrong Siddeley Jaguar or Bristol Jupiter engine – Nieuport Nightjar replacement
Fairey Flycatcher, Parnall Plover
7/22
Army reconnaissance aircraft
Hawker Duiker
8/22
Corps reconnaissance aircraft
Armstrong Whitworth Wolf
9/22
New tail unit and trial
de Havilland DH.29 Doncaster
10/22
Metal-winged DH.9a
Airco DH.9a
11/22
Reconditioning of DH.9a
Airco DH.9a
12/22
Single-engined goods carrier
Vickers Type 63 Vulcan
13/22
Reconditioning of Snipe
Sopwith Snipe
14/22
High performance landplane
Armstrong Whitworth Siskin III
15/22
Modifications to Hanley
Handley Page HP.19 Hanley II
16/22
Long range Torpedo Bomber to carry 21 inch torpedo
Blackburn Cubaroo, Avro 557 Ava
17/22
Amphibian floatplane
 Not proceeded with
18/22
Amphibian seaplane
 Not proceeded with
19/22
Night bombing landplane
 Not proceeded with
20/22
Coast patrol seaplane
English Electric P.5 Cork[2]
21/22
Twin-engined amphibian flying boat for civil operations[31] – see also R.18/24[32]
Supermarine Swan
22/22
Two-seat fighter/reconnaissance powered by a supercharged engine – Bloodhound three aircraft order – revised from 3/22 (q.v.)
Bristol Type 84 Bloodhound
23/22
Amphibian floatplane
 Not proceeded with
24/22
Amphibian seaplane
 Not proceeded with
25/22
Single-seat night interceptor fighter
Hawker Woodcock
30/22


Boulton & Paul Bugle
B.30/22
Heavy bomber – written for Bugle II production order but Sidestrand also apparently designed to this spec.
Boulton & Paul Bugle II, Boulton Paul Sidestrand
31/22
4-seat heavy night-bomber
Handley Page Hyderabad
32/22
Single-seat deck-landing torpedo-carrier - Spec. supersedes 3/20 (q.v.)
Blackburn Dart II, Bristol Brandon
37/22
Three-seat deck landing reconnaissance aircraft – Blackburn Blackburn / Avro Bison replacement
Blackburn Airedale, Hawker Hedgehog
38/22
General Purpose seaplane/landplane
Fairey IIID
40/22
Transport aeroplane – civil airliner – larger version of de Havilland DH.34
de Havilland Highclere
41/22
'Middle East type transport aeroplane' – civil airliner
Armstrong Whitworth Argosy, de Havilland Hercules
43/22


Vickers Vernon II
44/22
Single-engined long-range reconnaissance seaplane – intended for round-the-World flight
Fairey Fremantle
46/22
Three-seat fleet-spotter amphibian[33]
Vickers Vanellus
9/23
Superseded by 14/24[2]
Blackburn Iris
13/23


Supermarine Seagull II[2]
16/23
 None
 Spotting ship-plane
Avro Bison
19/23
Fighter/interceptor – improved Siskin III
Armstrong Whitworth Siskin IIIA
21/23
Fleet two-seat torpedo bomber
Avro Buffalo, Blackburn Ripon, Handley Page H.P.31 Harrow
23/23
Coastal patrol and anti-submarine flying-boat
English Electric Kingston[2]
25/23
Fleet two-seat torpedo bomber/bomber
Handley Page H.P.25 Hendon
26/23
Two-seat long-range day-bomber
Bristol Berkeley, Handley Page H.P.28 Handcross, Hawker Horsley, Westland Yeovil
28/23
Long-range bomber - Virginia production order
Vickers Virginia
37/23
Single-engined fighter/interceptor – improved Grebe
Gloster Gamecock
1/24
Three-seat fleet reconnaissance seaplane and amphibian
Parnall Pike, Short S.6 Sturgeon, Bristol Type 87
2/24
Light Aeroplane
 Cancelled
3/24
Single-seat high-performance landplane
Hawker Woodcock II (production)
4/24
"Twin-Engined Home Defence Fighter" armed with two 37 mm cannons
Westland Westbury Bristol Bagshot
5/24
Advanced landplane, convertible to a seaplane, trainer for RAF and deck-landing trainer for FAA
 Cancelled, replaced by 5A/24
5A/24
Floatplane trainer
Vickers Vendace, Blackburn Sprat, Parnall Perch
6/24
Single-seat fighter
Fairey Flycatcher (production)
7/24
'High Powered Single-Seater Fighter Landplane'
Avro Avenger, Fairey Firefly I, Fairey Fox, Gloster Gorcock, Hawker Hornbill
8/24
Army co-operation aircraft
de Havilland Dingo
9/24
Twin engine medium day-bomber – Sidestrand II production order – see also 25/27
Boulton Paul Sidestrand II
10/24
Fleet spotting ship-plane
Blackburn Blackburn
11/24
Fleet spotting ship-plane
Avro Bison II
12/24
Long-range bomber – Virginia production order
Vickers Virginia
13/24
Patrol flying boat
Blackburn Iris III, Short Singapore
14/24
Three-engined boat seaplane
Blackburn Iris, Saunders Valkyrie
15/24
4-seat heavy night-bomber – initial production batch of Hyderabads
Handley Page Hyderabad I
16/24
Submarine-borne reconnaissance seaplane
Parnall Peto
17/24
Single-seat high-speed fighter landplane
Gloster Guan
18/24
Twin-engined amphibian flying boat – military version of boat ordered to 21/22
Supermarine Southampton
19/24
Three-seat Spotter/Reconnaissance (Fleet Air Arm) /two-seat GP (Royal Air Force) aircraft with interchangeable land & float U/C & folding wings
Fairey IIIF
20/24
All-metal monoplane flying boat
Beardmore Inverness
21/24
Single-seat boat seaplane for storage in restricted space
Parnall Prawn
22/24
Three-engine boat seaplane
Saunders Valkyrie
23/24
Twin engine civil airliner
Handley Page H.P.32 Hamlet
24/24
Conversion of Bison I to Bison Ia
Avro Bison
25/24
Single-seater, high-speed fighter landplane
Hawker Heron
26/24
Three-engined land-plane for duties in the Middle East
 Cancelled
27/24
Twin engine single-seat interceptor/night fighter
Boulton Paul Bittern
28/24
Day and night fighter - Armstrong Whitworth Siskin replacement
Armstrong Whitworth Starling
29/24
Twin-engined boat amphibian with Lynx engines (service aircraft)
Supermarine Seamew
30/24
Two-seat reconnaissance/army co-operation aircraft
de Havilland Hyena, Short Chamois, Vickers Vespa
31/24
Twin-engined boat amphibian with Lynx engines (civil aircraft)
Saunders Medina
32/24
Training landplane with Lynx engines – replaced by 3/27
Avro 504N
33/24
Three-engined boat seaplane for civil use
 Not issued
34/24
Freight carrying landplane
Vickers Vellore, Gloucester Goodwood
35/24
Three-engine landplane for Middle East transport
Armstrong Whitworth Argosy
11/25


Supermarine Southampton
17/25
Naval single-seater fighter of all-metal stressed-skin construction with interchangeable wheel and float U/C powered by Lynx engine
Avro 584 Avocet, Vickers Vireo
20/25
Army co-operation aeroplane - Bristol Fighter/DH.9A replacement
Armstrong Whitworth Atlas, Bristol Boarhound
23/25
Two-seat day-bomber, reconnaissance & coastal torpedo-bomber
Blackburn Beagle, Gloster Goring, Handley Page H.P.34 Hare, Hawker Harrier, Westland Witch
24/25
High altitude bomber - Hawker Horsley replacement
Blackburn Beagle, Handley Page H.P.34 Hare, Vickers Vildebeest
7/26
Twin-float high-speed monoplane seaplane for 1927 Schneider Trophy competition
Short Crusader
F.9/26
 None
 Day and night 'zone' fighter – no design accepted and Spec. superseded by F.20/27 (q.v.)
Armstrong Whitworth Starling II, Blackburn Blackcock / Turcock, Boulton Paul Partridge, Bristol Bulldog Mk.I, Bristol Bullpup, Gloster Goldfinch, Gloster SS.18, Hawker Hawfinch, Vickers Type 141
10/26
Long-range bomber - Virginia production order
Vickers Virginia
12/26
Fast two-seat day bomber of all-metal construction using Rolls-Royce F.XIB engine
Avro Antelope, Hawker Hart, Fairey Fox IIM
14/26
Passenger flying boat
Short Calcutta
21/26
Naval Fleet fighter – see also N.21/26
Parnall Pipit, Vickers Type 141, Vickers Type 177
N.21/26
Naval Fleet fighter – see also 21/26
Armstrong Whitworth Starling II, Armstrong Whitworth A.W.16, Blackburn Blackcock/Turcock, Fairey Firefly III, Gloster Gnatsnapper, Hawker Hoopoe, Vickers Type 177
O.22/26
Naval high-speed, two-seat, Fleet fighter/reconnaissance
Blackburn Nautilus, Fairey Fleetwing, Handley Page H.P.37F, Hawker Osprey, Short Gurnard
R.4/27
Maritime patrol flying boat
Saunders Severn
R.5/27
Reconnaissance flying boat
Blackburn Sydney
8/27
Long-range bomber - Virginia production order
Vickers Virginia
F.10/27
Single-seat fighter armed with six machine guns
Saunders A.10
B.19/27
Twin engine night-bomber - Virginia/Hinaidi replacement – Hendon winner but introduction delayed so runner-up (Heyford) accepted
Avro 557 Ava, Fairey Hendon, Handley Page Heyford, Vickers Type 150, Vickers Type 163, Vickers Type 195, Vickers Type 225, Bristol Type 108
C.20/27
Transport version of Handley Page Hyderabad / Handley Page Hinaidi - Chitral/Clive
Handley Page Clive
F.20/27
'Interception single-seat fighter'
Armstrong Whitworth Starling II, Bristol Bulldog Mk.II, de Havilland DH.77, Fairey Firefly II, Hawker Fury, Saunders A.10, Vickers Jockey, Westland Interceptor
B.22/27
Three engine night-bomber - abandoned due to delays and replaced by B.19/27 (q.v.)
Boulton Paul P.32, de Havilland DH.72 Canberra
25/27
Twin engine medium day-bomber - Sidestrand II production order - see also 9/24
Boulton Paul Sidestrand II
26/27
General purpose aircraft - D.H.9A replacement
Bristol Beaver, de Havilland Hound, Fairey Ferret, Gloster Goral, Vickers 131 Valiant, Vickers Venture, Vickers Vixen, Westland Wapiti
F.29/27[34]
Fighter utilizing a 37 mm cannon from Coventry Ordnance Works
Vickers Type 161, Westland C.O.W. Gun Fighter, Bristol Type 112
33/27
'Postal Aircraft' – experimental very-long range aeroplane for world distance-record attempt
Fairey Long-range Monoplane
M.5/28
Torpedo bomber - Spec superseded by M.1/30 (q.v.)
Handley Page H.P.41
R.6/28
Patrol/reconnaissance flying boat
Short Sarafand
8/28
Racing seaplane for 1929 Schneider Trophy using Rolls-Royce R engine, for use by RAF High Speed Flight
Supermarine S.6
13/28
Long-range bomber – Virginia production order
Vickers Virginia
C.16/28
Bomber-transport capable of carrying 30 fully armed troops, or their equivalent in cargo or bombs, for a distance of 1,200 mi (1,900 km) nonstop
Gloster TC.33, Handley Page H.P.43, Vickers Type 163, Bristol Type 115, Bristol Type 116
F.17/28
Bulldog II production order
Bristol Bulldog Mk.II
21/28
High-speed mailplane for Imperial Airways
Boulton & Paul Mailplane, Boulton Paul P.71A
1/29
General purpose aircraft (for production)
Westland Wapiti
2/29
Two-seat carrier-borne torpedo-bomber (for production)
Blackburn Ripon IIA
3/29
Troop transport aircraft
Handley Page Clive II
4/29

Ab initio trainer – Moth with de Havilland Gipsy I order
de Havilland Gipsy Moth
5/29
Elementary trainer (for production)
Hawker Tomtit
6/29
General purpose landplane
Blackburn C.A.15C, Boulton & Paul P.42, Westland Limousine V
7/29
Troop carrying aeroplane (for production)
Vickers Victoria V
8/29
Single-seat fighter (for production)
Armstrong Whitworth Siskin IIIA
9/29
Day bomber (for production)
Hawker Hart
10/29
Medium day-bomber (for production)
Boulton Paul Sidestrand III
11/29
Day and night fighter (for production)
Bristol Bulldog IIA
12/29
Spotter reconnaissance aeroplane for the Fleet Air Arm (for production)
Fairey IIIF
13/29
Heavy night-bomber (for production)
Handley Page Hinaidi II
14/29
Army co-operation aircraft
 Cancelled
15/29
General purpose aircraft
 Cancelled
16/29
Experimental tailless aircraft
Westland-Hill Pterodactyl IV
17/29
All-metal torpedo-bomber (for development and production)
Hawker Horsley
18/29
General reconnaissance flying boat – military version of Short S.8 Calcutta
Short Rangoon


1930–1939

















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































Spec
 OR
 Type
 Designs
M.1/30
Torpedo bomber – Spec. supersedes M5/28 (q.v.)
Blackburn M.1/30, Handley Page H.P.46, Vickers Type 207
2/30
Dual control conversion set issued to Blackburn but then cancelled
3/30
Basic trainer – Avro 504N replacement
Avro Type 621 Trainer
5/30
Mail carrier
Vickers Type 166 Vellore II
6/30

ab initio trainer – Lynx-Avro (Avro 504N) production order
Avro 504N
F.7/30
Fighter capable of at least 250 mph and armed with four machine guns
Blackburn F.3, Bristol Type 123, Bristol Type 133, Gloster Gladiator, Gloster SS.19, Hawker P.V.3, Supermarine Type 224, Westland F.7/30
8/30

ab initio trainer – Moth with Gypsy II order
de Havilland Moth
S.9/30
Two-seat carrier-borne torpedo bomber/three-seat spotter-reconnaissance aircraft
Fairey T.S.R.I, Gloster FS.36; see also S.15/33
16/30
Naval fighter – written for Nimrod
Hawker Nimrod
18/30

Fairey IIIF replacement
Fairey Gordon I
19/30
Naval fighter/reconnaissance with folding wings and interchangeable wheel/float U/C
Hawker Osprey
G.4/31
General-purpose/torpedo bomber – Wapiti & Gordon replacement – Wellesley one of two designs submitted by Vickers and itself a PV – see also G.22/35
Blackburn B-7, Bristol Type 120, Fairey G.4/31, Handley Page H.P.47, Hawker P.V.4, Parnall G.4/31, Vickers G.4/31, Vickers Wellesley, Westland PV-7
5/31
Long-range bomber - Virginia production order
Vickers Virginia
13/31

ab initio trainer with complete freedom for parachute escape by both occupants – D.H.60T accepted with modifications, becoming D.H.82 – see also T.23/31 (some sources give 13/31 as an order for the Ripon IIC)
Avro Type 631 Cadet, de Havilland D.H. 60T Tiger Moth
18/31
Basic trainer – Avro Type 621 Trainer with Lynx engine
Avro Tutor
R.19/31
Three-engined long-range reconnaissance flying boat – Rangoon three-aircraft production order
Short Rangoon
R.20/31
Twin-engined flying boat - all-metal Kestrel-engined Southampton II (Southampton IV/Scapa)
Supermarine Scapa
T.23/31
Tiger Moth I production order
de Havilland Tiger Moth I
R.24/31
"General Purpose Open Sea Patrol Flying Boat"
Saunders Roe London, Short R.24/31 Knuckleduster, Supermarine Stranraer
C.26/31
 OR.4
 Bomber-transport – Valentia replacement
Armstrong Whitworth A.W.23, Bristol Bombay, Handley Page H.P.51. Vickers Type 230 – (not built)
B.9/32
 OR.5
 Twin-engine medium day bomber with appreciably higher performance than predecessors – later revised to specify Goshawk power and subsequently re-revised with Goshawk requirement dropped
Vickers Wellington(renamed from 'Crecy'), Handley Page Hampden, Bristol Type 131
S.11/32
Naval catapult observation/spotting seaplane for carriage on cruisers
Fairey Seafox
T.12/32
Trainer
Bristol Type 124
19/32
Conversion of Westland Wapiti into Westland Wallace standard
Westland Wallace
20/32
Three-engined long-range reconnaissance flying boat - improved Iris with Buzzard engines
Blackburn Perth
25/32
Basic trainer – revised-Tutor production order
Avro Tutor I
B.23/32
Twin-engine medium bomber – written for Heyford I & IA production order
Handley Page Heyford Mk. I/IA
P.27/32
Light day bomber – Hart/Hind replacement – see P.23/35
Armstrong Whitworth A.W.29, Fairey Battle, Gloster P.27/32, Bristol Type 136
R.1/33
Patrol/reconnaissance flying boat
Westland-Hill Pterodactyl Mk.VII
R.2/33
Long-range patrol/reconnaissance flying boat
Short Sunderland, Saro A.33
R.3/33
Long-range patrol/reconnaissance flying boat – trials order for Singapore III
Short Singapore III
F.5/33
Twin-engine two-seat turret fighter – later cancelled
Armstrong Whitworth A.W.34, Boulton Paul P.76, Bristol Type 140, Gloster F.5/33, Parnall F.5/33, Westland-Hill Pterodactyl Mk.V
T.6/33
Tiger Moth floatplane two aircraft evaluation order
de Havilland Tiger Moth
13/33
4-engined mail seaplane and 4-engine flying boat carrier – Short-Mayo Composite
Short S.20 Mercury, Short S.21 Maia
14/33
Fairey Gordon II production order
Fairey Gordon II
S.15/33
Naval carrier-borne torpedo bomber/spotter/reconnaissance (TSR) – Fairey 9/30 (q.v.) design modified and re-submitted as T.S.R.II – Spec. replaces S.9/30 & M.1/30 (q.v.)
Blackburn Shark, Fairey Swordfish, Gloster TSR.38
18/33
Radio-controlled Fleet gunnery target aircraft
de Havilland Queen Bee
21/33
Three-seat general purpose/Army co-operation aircraft – Fairey IIIF/Wapiti replacement – improved Vildebeest
Vickers Vincent
F.22/33
Fighter
Bristol Type 141
G.23/33
General purpose aeroplane – Hart for Middle East
Hawker Hardy
24/33
Gloster Gauntlet production order
Gloster Gauntlet
25/33
Twin-engined troop and cargo transport – improved Victoria
Vickers Valentia
T.26/33
Tiger Moth II production order
de Havilland Tiger Moth II
B.29/33
Twin engine medium day bomber with power-operated nose turret
Boulton Paul Sidestrand V (Overstrand)
1/34
Two-seat Army Co-operation Fighter Bomber for the Royal Australian Air Force[35]
Hawker Demon
2/34
High-altitude research aircraft capable of reaching 50,000 ft
Bristol Type 138A
B.3/34
 OR.12
 Heavy bomber landplane,[35] twin-engine night bomber & bomber/transport – Virginia, Heyford & Hendon replacement – transport requirement later removed after protests from manufacturers
Armstrong Whitworth Whitley, Bristol Type 144
P.4/34
 OR.13
 Light day bomber for tactical support[35]
Fairey P.4/34, Hawker Henley
F.5/34
 OR.15
 Single-seat fighter[35] (although contracts were placed for prototypes with three companies none were ordered into production)[35]
Bristol Type 146, Martin-Baker M.B.2, Vickers Type 279 Venom, Gloster F.5/34
6/34
Single-engine biplane amphibian for Australia.[35]
Supermarine Seagull V
G.7/34
Two-seat general purpose light bomber,[35] Interim Hart day bomber replacement
Hawker Hind
8/34
Two-seat interceptor fighter[35] (production of Demon I for the RAF[35])
Hawker Demon
9/34
Two-seat day bomber and army co-operation aircraft[35] (production of Hawker Audax[35])
Hawker Audax
10/34
Hawker Hart communications aircraft (two aircraft delivered to No. 24 Squadron RAF[35])
Hawker Hart
11/34
Torpedo spotter reconnaissance aircraft development[35] (One Fairey Seal fitted with an Armstrong Siddeley Panther VI engine[35])
Fairey Seal
12/34
Torpedo spotter reconnaissance aircraft development[35] (production of 16 Sharks for use by No. 820 Squadron RAF[35])
Blackburn Shark
13/34
Bulldog trainer production[35] (production of Bulldog TM Type 124[35])
Bristol Bulldog
R.14/34
Singapore III production order[35]
Short Singapore III
15/34
Three-seat torpedo bomber[35] (production of Mk III[35])
Vickers Vildebeest
16/34
Three-seat general purpose aircraft - Vincent I production order including conversion of outstanding Vildebeests to Vincents
Vickers Vincent I
17/34
Torpedo bomber[35] (additional Baffin T.8A aircraft for conversion training, three built[35])
Blackburn Baffin
18/34
Single-engine day bomber[35] (Hawker Hart IB production[35])
Hawker Hart
19/34
Two-seat Army co-operation aircraft[35] (production of Audax Is for use in India, 50 aircraft built[35]
Hawker Audax
B.20/34
Twin-engine night bomber - Hendon production order to this spec - see also B.19/27
Fairey Hendon
21/34
Two-seat fleet spotter reconnaissance aircraft[35] (Osprey III production[35])
Hawker Osprey
22/34
Close-support aircraft – Audax for SAAF
Hawker Hartebees
B.23/34
Twin engine medium day bomber – Overstrand production order
Boulton Paul Overstrand
24/34
Basic trainer - production order for second batch of definitive Tutor design – see 3/30, 18/31 & 25/32
Avro Tutor I
25/34
Amphibian trainer[35] (production of three Clouds[35])
Saro Cloud
26/34
Float seaplane trainer[35] (production of 16 Tutors for the Seaplane Training School[35])
Avro Type 646 Sea Tutor
O.27/34
Naval dive bomber
Blackburn Skua
B.28/34
Twin-engine medium bomber – written for Heyford II production order
Handley Page Heyford Mk. II
29/34
Hawker Fury for the South African Air Force[35]
Hawker Fury
30/34
Twin-engined troop and cargo transport – Valentia I production order
Vickers Valentia I
31/34
Armoured day bomber (development of armoured crew protection for the Hart[35])
Hawker Hart
32/34
Navigation trainer - Prefect production order
Avro 626/Prefect
F.36/34
 OR.16
 High Speed Monoplane Single Seater Fighter (based on the Hawker submission to F.5/34)[35]
Hawker Hurricane
F.37/34
High Speed Monoplane Single Seater Fighter (based on the private venture Supermarine Type 300 submission)[35]
Supermarine Spitfire
S.38/34
Written for Swordfish production order
Fairey Swordfish I
A.39/34
Two-seat Army co-operation aeroplane
Bristol Type 148, Westland Lysander
B.1/35
 OR.19
 Twin-engine medium bomber
Airspeed A.S.29, Armstrong Whitworth A.W.39, Handley Page H.P.55, Vickers Warwick
2/35
Naval catapult-launched observation/spotting flying boat for carriage on cruisers
Supermarine Walrus
F.9/35
Two-seat four-gun turret fighter – Demon replacement
Hawker Hotspur, Boulton Paul Defiant, Bristol Type 147
F.10/35
Drawn up for the Spitfire prototype
Supermarine Spitfire
13/35
Naval torpedo-spotter-reconnaissance aircraft - written for Shark production order
Blackburn Shark
14/35
Army Co-operation aircraft - Audax replacement
Hawker Hector
F.14/35
Written for Gladiator I initial production order
Gloster Gladiator I
M.15/35
Land-based general reconnaissance/torpedo-bomber
Blackburn Botha, Bristol Beaufort
16/35
Autogyro - written for Cierva C.30/Avro 671 Rota evaluation order
Avro Rota
18/35
Twin-engined coastal reconnaissance landplane - written for Anson
Avro Anson
20/35
Radio-controlled Fleet gunnery target aircraft - Queen Bee production order
de Havilland Queen Bee
B.21/35
Twin-engine medium bomber - written for Whitley II production order
Armstrong Whitworth Whitley II
G.22/35
General-purpose day and night bomber and coastal-defence torpedo-carrier - Wellesley production order - see also G.4/31
Vickers Wellesley
P.23/35
Written for Battle I production order
Fairey Battle I
G.24/35
General Reconnaissance - Anson replacement
Bristol Type 149, Bristol Beaufort
26/35
Naval fighter/reconnaissance - Osprey IV production order
Hawker Osprey IV
B.27/35
Twin-engine medium bomber - written for Heyford III production order
Handley Page Heyford Mk. III
B.28/35
Drawn up for Bristol 142M
Bristol Blenheim
B.29/35
Written for Harrow initial production order
Handley Page Harrow
O.30/35
Naval turret-fighter - fighter development of Skua accepted
Blackburn Roc, Boulton Paul P.85
Q.32/35
Radio-controlled Fleet Gunnery target aircraft - Queen Bee replacement
Airspeed Queen Wasp
F.34/35
Twin-engined turret-armed fighter
 Gloster F.34/35
F.35/35
Very high speed fighter
 Airspeed A.S.31 (not built)
36/35
Trans-Atlantic mail plane
de Havilland Albatross
F.37/35
 OR.31
 Fighter with cannon
Westland Whirlwind, Hawker Hurricane with Oerlikon cannon, Supermarine Type 313, Bristol Type 153
39/35
Twin-engine communications aircraft - Envoy with dorsal turret order for SAAF
Airspeed Envoy
R.1/36
 OR.32
 Small reconnaissance flying boat
Saro Lerwick, Blackburn B-20
2/36
Development of the Cierva C.30 (cancelled)
3/36
Development of the Avro 652A (cancelled)
4/36
Catapult bomber (cancelled)
 Short S.27
5/36
 OR.33
 Improved Walrus for the Fleet Air Arm
Supermarine Walrus
T.6/36
 OR.34
 Advanced monoplane trainer mounting manually operated dorsal turret – Don accepted but proved unsuitable
de Havilland Don, Miles Kestrel
M.7/36
Torpedo Spotter Reconnaissance aircraft (cancelled)
Fairey Albacore
O.8/36
 OR.36
 Reconnaissance dive bomber for the Fleet Air Arm (cancelled)

S.9/36
 Three-seat spotter fighter for the Fleet Air Arm (cancelled)
 Fairey S.9/36
10/36
 OR.38
 Written for Beaufort production order
Bristol Beaufort I
11/36
 OR.39
 Interim General Reconnaissance – aircraft later renamed 'Blenheim IV' and 'Bolingbroke' name transferred to Canadian-built Blenheim
Bristol Bolingbroke I
B.12/36
 OR.40
 Four-engine heavy bomber 250 mph cruise, 1500 mile range, 4000 lb bomb load[36]
Armstrong Whitworth B.12/36, Short Stirling, Supermarine Type 316
P.13/36
 OR.41
 Twin-engined medium bomber for "world-wide use" introduction delayed due to production difficulties necessitating further order of Whitleys & Wellingtons[note 1]
Avro Manchester (2 prototypes ordered), Handley Page H.P.56 (one prototype ordered), Hawker P.13/36 (project only), Vickers Warwick with Rolls-Royce Vulture engines.[citation needed]
14/36
Production specification for the Fairey Battle I
Fairey Battle (500 ordered later reduced to 311)
F.15/36
Written for Hurricane redesigned for Merlin II
Hawker Hurricane I
17/36
Written for Hotspur initial production order - later cancelled
Hawker Hotspur; cancelled
19/36
Naval torpedo-spotter-reconnaissance aircraft - written for Shark additional production order
Blackburn Shark
B.20/36
Twin-engine medium bomber - written for Whitley III production order
Armstrong Whitworth Whitley III
T.23/36
Multi-role crew trainer
Airspeed Oxford
25/36
Written for Skua initial production order
Blackburn Skua
26/36
Written for Roc initial production order
Blackburn Roc
29/36
Written for Wellington (revised Crecy from B.9/32) initial production order
Vickers Wellington I
B.30/36
Written for Hampden initial production order
Handley Page Hampden I
33/36
Written for Blenheim I production order (Rootes)
Bristol Blenheim I
36/36
Written for Lysander initial production order
Westland Lysander I
37/36
Written for Walrus additional production order
Supermarine Walrus I
39/36
Written for Botha additional production order (Boulton Paul) - cancelled
Blackburn Botha
T.40/36
 OR.44
 Development and production of a trainer version of the Miles Hawk
Miles Magister
S.41/36
Three-seat torpedo/spotter-reconnaissance aircraft - Swordfish replacement
Fairey Albacore
42/36
Target tug - order for Henley target tug conversions by Gloster's
Hawker Henley III
43/36
Autogyro
 Cierva C.40 Rota II
B.44/36
Written for Dagger-Hampden (Hereford) production order
Handley Page Hereford I
45/36
Written for Botha additional production order (Blackburn) - cancelled
Blackburn Botha
47/36
Written for Bombay II production order
Bristol Bombay II
T.1/37
Basic trainer
Heston T.1/37 Trainer, Miles M.15, Parnall Heck III, Airspeed A.S.36 (not built)
2/37
Written for Blenheim I production order (Avro)
Bristol Blenheim I
6/37
Twin-engine VIP transport aircraft - order for The King's Flight
Airspeed Envoy
Q.8/37
Radio-controlled Fleet Gunnery target aircraft - Queen Bee replacement - role subsequently carried-on by Queen Wasp - see Q.32/35
 Airspeed A.S.37 (not built)
F.9/37
 OR.49
 Twin-engine day/night fighter
Gloster G.39
F.11/37
Twin-engine two-seat day & night fighter/ground support
Boulton Paul P.92
F.18/37
Heavily armed interceptor armed with 12 x 0.303 mgs and capable of at least 400 mph
Bristol F.18/37, Gloster F.18/37, Hawker Tornado, Hawker Typhoon, Supermarine Type 324, Supermarine Type 325
19/37
Written for Manchester I production order
Avro Manchester I
20/37
Written for Roc floatplane production order
Blackburn Roc
S.23/37
 OR.52
 Four-engine carrier-based Fleet shadower/follower - low-speed, high-endurance, ship-tracking aircraft - requirement later rendered obsolete due to introduction of radar
Airspeed AS.39, General Aircraft GAL.38
S.24/37
 OR.53
 Naval torpedo/dive-bomber, reconnaissance - Supermarine entry featured variable-incidence wing
Supermarine S.24/37, Fairey Barracuda
32/37
Written for Halifax initial production order
Handley Page Halifax I Srs 1 - I Srs 3
B.32/37
 OR.44
 Production contract for a four-engine version of the P.13/36 H.P.56 design
Handley Page H.P.57 Halifax
37/37
Magister I production order
Miles Magister I
38/37
Three-seat communications aircraft & instrument/wireless trainer
Miles Mentor
T.39/37
Three-seat communications aircraft & instrument/wireless trainer
Airspeed AS.42 Oxford for the Royal New Zealand Air Force
42/37
Specification for wooden mockup of Miles X2 large transport aeroplane - not built - lead to Miles M.30X Minor scale testbed
Miles M.30X Minor
43/37
Engine testbed
Folland Fo.108; designs also tendered by General Aircraft & Percival
S.7/38
Naval catapult-launched observation/spotting flying boat – Walrus replacement
Supermarine Sea Otter
O.8/38
Naval carrier-borne fighter/observation – winner developed from Fairey's earlier P.4/34 entry
Fairey Fulmar
B.9/38
Twin-engine medium bomber of simple construction using materials other than light alloy wherever possible
 see B.17/38 and B.18/38[37]
14/38
Long-range pressurised high-altitude monoplane transport/airliner (Shorts) – 3 prototypes ordered, construction started – cancelled
Short S.32
15/38
Short/Medium-range monoplane transport/airliner (Fairey) – Fairey FC.1, 14-aircraft production order – cancelled
Fairey FC1, General Aircraft GAL.40
16/38
Trainer - Master I production order
Miles Master T.Mk.I
B.17/38
Twin-engine medium bomber of mixed wood/metal construction
 Bristol Type 155 (cancelled by Bristol)[37]
B.18/38
Twin-engine medium bomber of mixed wood/metal construction
Armstrong Whitworth Albemarle[37]
B.19/38
Bomber with 8,000 lb load and eight 20mm cannon in two turrets – revised to become B.1/39
Bristol Type 157
20/38
Communications aircraft – Vega Gull order
Percival Vega Gull
21/38
Communications aircraft – Dominie production order
de Havilland Dominie
S.22/38
Naval helicopter
Cierva C.41 Gyrodyne
24/38
Twin-engine communications aircraft – Envoy production order
Airspeed Envoy
25/38
Twin-engine communications aircraft
Percival Petrel
26/38
 OR.65
 Three-seat wireless or navigation training aircraft with dual controls – Vega Gull adapted for communications training
Percival Proctor I
28/38
 OR.66
 Two-seat helicopter - written for Weir W.6
Weir W.6
T.29/38
Twin-engine R/T (Radio Telephony) training aircraft – Dominie three aircraft order
de Havilland Dominie
B.1/39
"Ideal Bomber" four-engined heavy bomber with 9,000 lb bomb load and 20mm cannon defence (revised B.19/38) - work suspended June 1940[38]
Handley Page H.P.60, Bristol Type 159
T.4/39
 OR.68
 Single-engined trainer
Airspeed Cambridge – (two prototypes ordered, no production contract)
R.5/39
Long-range patrol flying boat – Sunderland replacement – superseded by R.14/40 (q.v.)
Saunders-Roe S.38 – later cancelled
N.8/39
Naval two-seat carrier-borne fighter – Roc replacement – replaced by N.5/40
 see N.5/40
N.9/39
Naval two-seat carrier-borne fighter – Fulmar replacement – replaced by N.5/40
 see N.5/40
F.17/39
Long-range fighter development of Bristol Beaufort – written for Beaufighter
Bristol Beaufighter
F.18/39
Fighter – Hurricane/Spitfire replacement
Martin-Baker M.B.3, Martin-Baker M.B.5
19/39
Twin-engine transport aircraft – order for Hertfordshire later cancelled
de Havilland Hertfordshire
20/39
Twin-engine communications aircraft – order for No. XXIV Squadron RAF
de Havilland Flamingo
21/39
Twin-engine VIP transport aircraft – order for The King's Flight
de Havilland Flamingo
F.22/39
 OR.76
 Fighter fitted with heavy-calibre nose-mounted gun
 Vickers 414 Vickers Type 432 – also tests with Vickers Type 439 testbed – specification later cancelled
B.23/39
Very high altitude version of Wellington capable of operating at 40,000 ft
Vickers Wellington V
E.28/39
Experimental aircraft using Whittle jet-propulsion with provision for 4 × 0.303 machine guns
Gloster E.28/39


1940–1949







































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































Spec
 OR
 Type
 Designs
B.1/40
 OR.78
 Twin-engine fast bomber carrying no defensive armament
de Havilland Mosquito
F.1/40

Air Observation Post (AOP)
Fane F.1/40, General Aircraft GAL.47[39]
2/40
 OR.79
 Twin-engined trainer aircraft
 Caproni Ca 311, Caproni Ca 313
F.2/40
Fighter using Whittle jet-propulsion (Metrovick) – written for Meteor – see also F.9/40
Gloster Meteor II
B.3/40
 OR.80
 High speed bomber
Blackburn B.28[40][page needed]
F.4/40
 OR.81
 High-altitude fighter – superseded by F.7/41 (q.v.)
Westland Welkin
N.5/40
 OR.82
 Naval 2-seat Fleet fighter
Fairey Firefly
B.6/40
 OR.83
 Twin-engine day/close support bomber – later renamed Blenheim V
Bristol Bisley
B.7/40
 OR.84
 Medium Bomber replacement for Blenheim bomber development of Beaufighter[41]
 A design by Armstrong Whitworth not taken further Bristol Beaumont accepted but not built, led to Buckingham (q.v.)[42]
8/40
 OR.85
 Ambulance Aircraft
 Airspeed Oxford
F.9/40
 OR.86
 Fighter using Whittle jet-propulsion (Rover/Rolls-Royce) – written for Meteor – see also F.2/40
Gloster Meteor I
X.10/40
 OR.87
 Troop-carrying glider capable of carrying 7 troops
General Aircraft Hotspur I; cancelled after eighteen built – redesigned Hotspur II relegated to training - see X.22/40 & X.23/40
N.11/40
 OR.88
 Naval single-seat Fleet fighter powered by Napier Sabre – see also S.8/43
Blackburn Firebrand F.I, Hawker P.1009 "Fleet Fighter"
S.12/40
 OR.89
 Naval catapult-launched observation/spotting flying boat – Walrus & Sea Otter replacement – superseded by S.14/44 (q.v.)
Supermarine Type 381
R.13/40
 OR.90
 General-purpose flying boat
Blackburn B-40
R.14/40
 OR.91
 Very long range reconnaissance flying boat – Centaurus-engined Sunderland replacement
Saunders-Roe S.41, Short Shetland
15/40
 OR.92
 Conversion of Supermarine Spitfire for Photographic Development Unit
Supermarine Spitfire
F.16/40
High-altitude fighter
Vickers Type 432
17/40
 OR.94
 Very high altitude bomber – Wellington V production order
Vickers Wellington V
F.18/40
 OR.95
Night fighter with turret
 Gloster F.18/40, fulfilled by de Havilland Mosquito NF.II[43]
F.19/40
Low-cost emergency production fighter
Miles M.20/2
B.20/40
"Close Army Support Bomber" with Merlin engine able to dive bomb and photoreconnaissance
 De-navalised version of Fairey Barracuda offered but specification not proceeded with.[40][page needed]
F.21/40
 OR.96
Fighter version of Mosquito
de Havilland Mosquito F.II
X.22/40
Troop-carrying training glider - Hotspur II production order
General Aircraft Hotspur II
X.23/40
Troop-carrying training glider - Hotspur II further production order
General Aircraft Hotspur II
T.24/40
Training aircraft
Airspeed A.S.50 (not built)
X.25/40
 OR.98
 Troop-carrying glider capable of carrying 14 troops
Slingsby Hengist
X.26/40
 OR.99
 Troop-carrying glider of wooden construction capable of carrying between 24-36 fully armed troops
Airspeed Horsa
X.27/40
 OR.100
 Tank-carrying heavy glider capable of carrying 7-ton load
General Aircraft Hamilcar
E.28/40
 OR.101
 Experimental research aircraft for deck landings - cancelled 1943
 Folland Fo.115, Folland Fo.116 (ordered but not completed)[44]
F.29/40
Twin-engined night fighter
 to cover the Gloster "Reaper" development of F.9/37 (cancelled May 1941)[43]
N.1/41
 OR.102
 Naval fighter
Miles M.20/4
B.2/41
Twin-engine bomber - Blenheim replacement - written for redesigned Bristol Type 162 Beaumont. Changes in requirements and availability of superior aircraft led to type no longer being needed
Bristol Buckingham (adapted for courier duties as C.1)
X.3/41
 OR.104
 Emergency Tallboy-carrying conversion of Horsa for attack on Tirpitz - later cancelled when Lancaster was modified to carry Tallboy
Airspeed A.S.52 Horsa
F.4/41
Spitfire with Griffon engine - written for Spitfire IV but amended to include Mk. XXI redesign. Preceded in introduction by Mk.s XII & XIV - some overlap with F.1/43 (q.v.)
Supermarine Spitfire XXI
B.5/41
 OR.106
 Pressurised high-altitude bomber - evolved into B.3/42 (q.v.)
 Pressurised version of the Vickers Warwick III
E.6/41
 OR.107
 Experimental jet fighter - DH Spider Crab
de Havilland Vampire
F.7/41
 OR.108
 High-altitude fighter - revised from F.4/40 (q.v.)
Vickers Type 432, Westland Welkin
B.8/41
Four-engined heavy bomber - see also B.3/42
Short S.36, Vickers Windsor
T.9/41
Four-seat radio trainer.
Percival Proctor IV
F.10/41
 OR.109
 Written for Hawker Tempest a.k.a. "Thin-Wing Typhoon"
Hawker Tempest
B.11/41
 OR.110
 High-speed high-altitude unarmed bomber
de Havilland DH.99, Hawker P.1005, Miles M.39
12/41
Target tug
Miles Martinet
C.1/42
 OR.113
 Interim transport aircraft - cargo version of Lancaster - York I production order
Avro York I
N.2/42
 OR.114
 Single-seat boat fighter
 Blackburn B-44
B.3/42
 OR.115
 High-performance long-range bomber
Vickers Windsor
B.4/42
High performance bomber (Mosquito replacement) - Cancelled
5/42
Glider for RAAF
De Havilland Australia DHA-G2
E.5/42
Experimental single-engined jet fighter - later cancelled - see E.1/44
Gloster GA.1
E.6/42
Experimental lightweight Tempest - written for Tempest Light Fighter - refined & re-issued as F.2/43 (q.v.)
Hawker Fury - see F.2/43
F.6/42
Single-seat fighter
Boulton Paul P.99, Boulton Paul P.100, Hawker Type P.1018, Hawker Type P.1019, Hawker Type P.1020, Folland Fo.117a, Miles M.42, Miles M.43, Miles M.44
H.7/42
 OR.117
 Torpedo bomber - Beaufighter replacement
Bristol Brigand
R.8/42
 OR.118
 Long-range patrol/reconnaissance flying boat - Sunderland with Hercules engines
Short Sunderland IV/Seaford
Q.9/42
 OR.119
 Twin engine target tug - planned production of Monitor later cancelled - see also Q.1/46
 'Miles Monitor TT Mk.1
10/42
"Special Rotating Wing Glider"
 used to identify the Hafner Rotabuggy
B.27/42
Halifax development aircraft
Handley Page Halifax
F.1/43
 OR.120
 Development of Spitfire with Griffon & laminar flow wing - see also N.5/45
Supermarine Spiteful
F.2/43
 OR.121
 Written for Tempest Light Fighter
Hawker Fury; cancelled at conclusion of hostilities.
TX.3/43
 OR.122
 Two-seat side-by-side seating training glider
General Aircraft G.A.L.55
N.4/43
 OR.113
 Carrier-based fighter - Seafire with Griffon engine
Supermarine Seafire XV
O.5/43
 OR.144
 Torpedo bomber - Barracuda replacement
Fairey Spearfish
S.6/43
Torpedo Bomber Reconnaissance Aircraft (Cancelled)
 Armstrong Whitworth A.W.53
N.7/43
Carrier-based fighter - revised as N.22/43 (q.v.)
Hawker Sea Fury
S.8/43
 OR.124
 Naval single-seat Fleet fighter capable of carrying rockets, torpedo or bombs - Firebrand powered by Centaurus - see also N.11/40
Blackburn Firebrand TF.III
F.9/43
 OR.125
 Two-seat high-altitude night fighter
Westland Welkin NF.II
Q.10/43
Radio-controlled Fleet Gunnery target aircraft - Queen Wasp replacement
Miles Queen Martinet
S.11/43
 OR.146
 Naval carrier-borne attack/strike aircraft - later cancelled - Sturgeon also submitted to Q.1/46 & M.6/49 (q.v.)
Armstrong Whitworth A.W.54, Short Sturgeon
F.12/43
 OR.126
 Long-range fighter for Far East - written for Hornet
de Havilland Hornet
T.13/43
 OR.148
 Advanced trainer
Bristol Buckmaster
B.14/43
Heavy bomber for Far East
Avro Lincoln, Handley Page H.P.65
15/43
 OR.151
 Medium Range Civil Transport Aircraft
Handley Page Hermes
E.16/43
Experimental helicopter with powered tilting hub controlled rotor with automatic collective pitch control, and torque reaction control using jet efflux.
Cierva W.9
A.17/43
 OR.145
 Army liaison and VIP transport aircraft - Messenger I production order
Miles Messenger I
C.18/43
Stop-gap airliner version of Stirling
Short S.37 Stirling
F.19/43
 OR.127
Folland design to be built by English Electric
20/43
 OR.142
 Two-seat training glider suitable for ATC cadets
Slingsby Kirby Cadet TX Mk.1
T.21/43
 OR.153
 Trainer version of Fairey Spearfish
Fairey Spearfish T. Mk 1
N.22/43
 OR.155
 Revision of N.7/43; carrier-based fighter
Hawker Sea Fury
T.23/43
 OR.131
 Trainer – all-weather fully aerobatic three-seater
Percival Prentice
E.24/43
Experimental jet research aircraft capable of 1,000 mph and able to reach 36,000 ft in 1 and 1/2 minutes
Miles M.52; cancelled 1946
25/43
Brabazon IIA – Civil Transport for European service
Airspeed Ambassador
C.26/43 (26/43)
Brabazon VB – Light Civil Air Transport
De Havilland Dove
B.27/43
 OR.149
 Heavy bomber – developed Halifax
 Handley Page HP.66 and HP.69 – cancelled with end of war.[45][note 2]
S.28/43
 OR.150
Firebrand replacement
Blackburn B-48 YA.1/Firecrest
29/43
Airliner version of Lancaster IV - see also B.14/43
Avro Tudor
E.1/44
 OR.157
 Experimental Nene-powered jet fighter
Gloster GA.2
2/44
Brabazon Committee Type I
 Long range transatlantic airliner
Bristol Brabazon I, Miles X-11 (not built)
C.3/44
Long-range general-purpose transport - York replacement
Handley Page Hastings
X.4/44
 OR.160
 Tank-carrying heavy glider capable of carrying 7-ton load and returning under its own power
General Aircraft Hamilcar X
N.5/44
 OR.162
 Naval carrier-version of Hornet
de Havilland Sea Hornet
E.6/44
 OR.170
 Written for Saro SR.44 flying-boat jet fighter
Saro SR.A/1
N.7/44
 OR.167
 Carrier-based fighter - navalised version of Spitfire F Mk.21
Supermarine Seafire F Mk.45
PR.8/44
Photoreconnaissance version of the Bristol Buckingham
 Specification cancelled
E.9/44
Flying wing jet bomber/airliner
Armstrong Whitworth A.W.52
E.10/44
 OR.182
 Experimental Nene-powered jet fighter - Jet Spiteful
 see N.5/45
N.11/44
 OR.174
 Naval long-range carrier-based fighter with Eagle 22 piston engine capable of accepting a turboprop at a later date - RN version of F.13/44 (q.v.) - see also N.12/45
Westland Wyvern
12/44
Medium range civil transport aircraft
Handley Page Hermes II
F.13/44
 OR.194
 Long-range fighter with Eagle 22 piston engine capable of accepting a turboprop at a later date - RAF version of N.11/44 (q.v.) - see also N.12/45
Westland Wyvern, Hawker P.1027/P.1030
S.14/44
 OR.89
 Naval land-based ASR
Supermarine Seagull ASR-1
N.15/44
 OR.189
 Naval carrier-version of Mosquito
de Havilland Sea Mosquito TR.33
16/44
Stop-gap airliner version of Lancaster
Avro Lancastrian C.Mk 1
17/44
Medium-short haul passenger aircraft - stop-gap airliner version of Wellington
Vickers Wellington Transport Aircraft
18/44
Brabazon Committee Type Va
 Civil feederliner
Miles Marathon
19/44
Civil transport version of the Avro York C1
Avro York
20/44
Jet civil transport (de Havilland DH.106)
 Not issued
O.21/44
Twin-Merlin engined Fairey Spearfish
 Specification cancelled
22/44
Transport aircraft - mixed passenger, freight/passenger or all-freight high-payload/short-distance - see also G.9/45
Bristol Wayfarer/Freighter
E.1/45
 OR.195
 Experimental aircraft for research into proposed tailless configuration of early DH.106 Comet airliner design
de Havilland DH.108
A.2/45
 OR.176
 Army Air Observation Post (AOP) - replacement for Taylorcraft Auster AOPs
Auster A.2/45, Heston A.2/45
B.3/45
 OR.199
 Two-seat twin-engine high-altitude fast jet bomber carrying no defensive armament - Mosquito replacement - revised from E.3/45 (q.v.)
English Electric Canberra B.1 - see also B.5/47
B.3/45
Experimental two-seat twin-engine high-altitude fast jet bomber carrying no defensive armament - Mosquito replacement - reissued as B.3/45 (q.v.)
English Electric Canberra
A.4/45
 OR.164
 Army three-seat light communications aircraft - Leonides-powered Pioneer II later accepted 1950
Scottish Aviation Pioneer I
N.5/45
Naval carrier-borne fighter - Seafang developed to this spec. but supplanted by Nene-powered, Naval version of E.10/44 (q.v.)
Supermarine Attacker, Supermarine Seafang
T.7/45
 OR.159
 Three-seat advanced trainer using turboprop engine - Harvard replacement - replaced by T.14/47 (q.v.)
Avro Athena T.1, Boulton Paul Balliol T.1
TX.8/45
 OR.180
 Tandem-seat training glider for Air Training Corps
Slingsby T.24 Falcon 4
C.9/45
 OR.192
 Military transport aircraft capable of carrying a 3 ton load into jungle areas - see also 22/44
Bristol Wayfarer/Freighter
E.11/45
Experimental aircraft for research into low-speed handling and high Mach number flying of tailless designs - two examples of Swallow (one low- and one high-speed) ordered - see also E.1/45
de Havilland DH.108
N.12/45
 OR.213
 Long-range carrier-based fighter - Wyvern with Python turboprop engine - see also F.13/44 & N.11/44
Westland Wyvern S.4
C.13/45
High speed military transport aircraft
Airspeed Ayrshire
C.15/45
Long range transport aircraft
Handley Page H.P.72
GR.17/45
 OR.220
 Carrier-borne ASW
Blackburn B-54/B-88, Fairey Gannet
Q.19/45
 OR.204
 Mosquito target tug
de Havilland Mosquito TT.39
E.20/45
 OR.221
 Experimental helicopter - see also E.34/46
Bristol Type 171
N.21/45
 OR.226
 Naval carrier-borne two-seat night fighter
de Havilland Sea Hornet NF.21
Q.1/46
 OR.225
 Naval target tug
de Havilland Mosquito TT.39, Miles Monitor, Short Sturgeon TT.1,
2/46
Brabazon Committee Type I
 Long range transatlantic airliner - Brabazon II (Coupled Proteus) order
Bristol Brabazon II
C.3/46
Medium-range tactical transport
General Aircraft Ltd. 65 Universal Freighter
N.3/46
Naval helicopter
Cierva Air Horse
E.4/46
Experimental gyrodyne
Fairey Gyrodyne
R.5/46
 OR.200
 Four engine long-range Maritime patrol bomber - Liberator GR replacement
Avro Shackleton
N.7/46
 OR.218
 Naval carrier-borne interceptor/fighter bomber
Hawker Sea Hawk
C.9/46
All-round air transport - military version of Viking
Vickers Valetta C.Mk.1
N.11/46
Two-seat trainer version of Sea Fury
Hawker Sea Fury T.20
B.14/46
 OR.239
 Four engine jet medium bomber - later used as insurance against delay of aircraft submitted to B.35/46
Short Sperrin
C.16/46
Brabazon Committee Type IIB
 Short-medium range turboprop airliner carrying 24-30 passengers
Armstrong Whitworth A.W.55 Apollo, Handley Page H.P.76, Handley Page H.P.77, Handley Page H.P.78, Vickers Viscount
E.19/46
Experimental helicopter for crop spraying
Cierva Air Horse
22/46
 Brabazon Committee Type IV
 Jet-propelled trans-atlantic mail plane/jet airliner - MoS order for two Comet prototype/production aircraft
de Havilland Comet
26/46
 Brabazon Committee Type II
 Short-range feederliner - Dragon Rapide replacement
de Havilland Dove
E.27/46
 OR.241
 Experimental aircraft for investigation into delta wing characteristics at transonic speeds
Boulton Paul P.111
X.30/46
Assault glider
 Shorts S.48 / S.A.9
PR.31/46
 OR.223
 Photo Reconnaissance version of B.3/45
English Electric Canberra PR3
E.34/46
 OR.242
 Experimental helicopter - see also E.20/45
Bristol Sycamore
B.35/46
 OR.229
 Four engine swept-wing jet medium bomber with a cruising speed of 500 kt and a ceiling of at least 55,000 ft
Armstrong Whitworth A.W.56, Avro Vulcan, Bristol Type 172, de Havilland DH.111, Handley Page Victor, Short PD.1; Designs also submitted by Vickers & English Electric
E.38/46
 OR.243
 Experimental aircraft for investigation into the controllability and stability of swept wings at low speeds.
Hawker P.1052
N.40/46
 OR.246
 Naval carrier-borne jet fighter - see also F.4/48
de Havilland DH.110
E.41/46
Experimental swept-wing version of Attacker - evolved into Swift
Supermarine 510, Supermarine Swift
R.42/46
Marine Reconnaissance Landplane (Avro Shackleton MR.III replacement) - cancelled
Avro Shackleton MR.IV
F.43/46
 OR.228
 Interceptor using Rolls-Royce AJ.65 or Metrovick F.9 axial engines - superseded by F.3/48 (q.v.)
Gloster P.234, Gloster P.248, Gloster P.250, Hawker P.1054
F.44/46
 OR.227
 Two-seat twin-engined night/all weather fighter
 see F.24/48 & F.4/48
T.1/47
 OR.238
 Two-seat trainer version of Meteor – written around Gloster's civil Meteor demonstrator G-AKPK
Gloster Meteor T.7
C.2/47
 Brabazon Committee Type III
 Airliner – medium-range Empire transport
Bristol Britannia, Handley Page H.P.83, Handley Page H.P.84, Handley Page H.P.85, Handley Page H.P.86
F.3/47
Fighter – Vampire with wing strengthened for carriage of underwing stores
de Havilland Vampire F.Mk.3
B.5/47
 OR.235
 Three-seat twin-engine high-altitude fast jet bomber carrying no defensive armament – Mosquito replacement – revised from B.3/45 (q.v.) to include visual bombing requirement
English Electric Canberra B.2
A.6/47
Two-seat Army Helicopter
Bristol Type 171
E.8/47
 OR.250
 Experimental one-half scale research version of Bristol Type 172 four-jet long-range bomber design – later revised for reconfigured Type 176 – all subsequently cancelled
Bristol Type 174
N.9/47
 OR.254
 Naval carrier-borne jet fighter/research aircraft
Supermarine Type 508, Supermarine Type 529
E.10/47
 OR.252
 Experimental research jet
Fairey Delta 1
T.14/47
 OR.159
 Two-seat advanced trainer using Merlin 35 – replacement for T.7/45 (q.v.)
Avro Athena T.2, Boulton Paul Balliol T.2
E.1/48
Small Jet Propelled Helicopter (not-built)
 Isacco Helicogyre No. 5
R.2/48
 OR.231
 Reconnaissance flying boat, updated and renumbered as R.112D in 1950s but cancelled. Expected order for PD.2 suspended[46][47]
Blackburn B-78,[note 3]Saunders-Roe P.104/Saunders-Roe P.162, developed Short Shetland Short PD.2, Supermarine 524
F.3/48
 OR.228
 Written for P.1067, replaced F.43/46
Hawker P.1067 (Hawker Hunter), Bristol Type 177
F.4/48
 OR.227
 Two-seat twin-engined night/all weather fighter - replacement for Vampire NFs
de Havilland DH.110, Gloster Javelin
5/48
Long Range Empire Aircraft (cancelled)
 Avro 709, Blackburn B-73, Fairey FC.4
E.6/48
 no OR
 Experimental research aircraft using one-third scale version of Handley Page B.35/46 wing design
Handley Page HP.88
E.7/48
Experimental unmanned target aircraft powered by turbojet engine - Queen Martinet replacement
Government Aircraft Factory Jindivik
T.8/48
 OR.260
ab initio trainer - Tiger Moth replacement - written for Chipmunk T.10 production order
de Havilland Chipmunk T.10
B.9/48
 OR.231
 Four engine jet medium bomber - less advanced stop-gap for B.35/46 designs - written around Valiant
Vickers Valiant
10/48
Twin-engine crop sprayer (cancelled)
 Cierva W.11T
11/48
Production of Avro Tudor IVB civil aircraft (cancelled)
T.12/48
Trainer - two-seat Wyvern conversion trainer
Westland Wyvern T.3
T.13/48
 OR.249
 Trainer - multi-engine - replacement for Wellington T.Mk 10
Vickers Varsity T.Mk 1
S.14/48
 NAR.21, OR.264
 Naval version of the Sikorsky S-51
Westland Dragonfly
E.15/48
 no OR
 Experimental one-third scale low-speed research version of Avro's B.35/46 design
Avro 707
T.16/48
 OR.257
 Trainer - Prentice replacement
 Avro 714, Handley Page H.P.R.2, Percival Provost, Boulton Paul P.115, Boulton Paul P.116
T.17/48
 OR.260
 Primary Elementary Trainer
Fairey Primer
B.22/48
 OR.302
Pathfinder version of Canberra
English Electric Canberra B.5
F.24/48
 OR.265
 Two-seat twin-engined night/all weather fighter - interim stop-gap for F.4/48 - Meteor NF development originally to F.44/46 (q.v.)
Armstrong Whitworth Meteor NF.11
T.1/49
 OR.269
 Navigation / AI trainer
Vickers Type 743 Valetta T.3
T.2/49
 OR.244
 Dual-control training version of Canberra
English Electric Canberra T.4
T.3/49
Flying classroom
Avro Anson - cancelled
E.4/49
Experimental aircraft for B.9/48
Vickers Type 663 Tay Viscount
F.5/49
Long range fighter for RAF
M.6/49
 OR.275 / NRA/9
 Light carrier-borne ASW - written around Short Sturgeon variant - spec derived from GR.17/45
Short S.B.3
7/49
not issued
N.8/49
 NRA/18
 Naval strike aircraft
de Havilland DH.109 cancelled
A.9/49
 OR.274
 Army / RAF evacuation helicopter
Bristol Sycamore HC.10 & Bristol Sycamore HC.11 prototypes
E.10/49
Experimental - additional order for Avro 707s including side-by-side seating conversion-trainers - these later cancelled - see also E.15/48
Avro 707
E.11/49
Experimental - flying shell of B.35/46
 cancelled
12/49P
Proposed production of B.5/47 by English Electric
 cancelled
A.13/49
 OR.281
 Army helicopter
Saunders-Roe Skeeter
N.14/49
 NA/A.14
 Naval carrier-borne all-weather strike fighter - see also N.40/46 & F.4/48
de Havilland Sea Vixen
F.15/49
 OR.277
 Jet fighter - interim Vampire replacement
de Havilland Venom
E.16/49
 OR.282
 Swept-wing Mach 2 research aircraft
Armstrong-Whitworth AW.58
T.17/49
 NR/A20 & OR.283
 Crew trainer for Royal Navy / FAA
Percival Sea Prince T.1
C.18/49
 NR/A15 & OR.283
 Communication aircraft
Percival Sea Prince C.1
19/49P
Transport - Hastings C.2 order
Handley Page Hastings C.2
A.20/49
 OR.270
 Air Observation Post Aircraft
Auster AOP.9, Percival O.68 and Percival P.69 tendered
A.20/49 Issue 2
Production Auster AOP.9
Auster AOP.9
21/49
Medium range passenger transport
Vickers VC.2 Type 630 Viscount
U.22/49
high speed pilotless target aircraft and launching ramp
 GAF Jindivik II - cancelled
F.23/49
 OR.268
Supersonic jet fighter/interceptor
English Electric P.1 & English Electric P.1A
F.23/49 Issue 2
 OR.268 Issue 1
 Three prototype supersonic jet fighter/interceptor aircraft
English Electric P.1B Lightning
F.23/49 Issue 3
 OR.268 Issue 4
 Three prototype supersonic jet fighter/interceptor aircraft
English Electric P.1B Lightning
F.23/49 Issue 4
 OR.268 Issue 6
 20 pre-production supersonic jet fighter/interceptor aircraft
English Electric P.1B Lightning
F.23/49 Issue 5
outline Specification for proposed German version
English Electric P.1B Lightning
23/49P
 OR.268 Issue 6
 Fifty production supersonic jet fighter/interceptor aircraft
English Electric Lightning F.1 & English Electric Lightning F.1A
23/49P.2
 OR.268 Issue 6
 Forty two production supersonic jet fighter/interceptor aircraft
English Electric Lightning F.2
23/49P.3
Forty seven production supersonic jet fighter/interceptor aircraft + 3 prototypes converted from a pre-prod a/c and two F.2s
English Electric Lightning F.3
H.24/49
Air ambulance helicopter (cancelled)
Fairey FB-1 Gyrodyne
U.25/49
Small low speed pilotless target aircraft and launching pad (cancelled replaced by U.120D)
26/49
Replacement for the de Havilland Rapide (cancelled)
 Blackburn B-84, Folland Fo 134
E.27/49
[Configuration Research for F.23/49 (Cancelled and replaced with ER.100)
Short SB.5
F.28/49
Development of E.38/46 (P.1052) for Australian government.
Hawker P.1052


Post 1949 Specifications and Air Staff Operational Requirements/Targets (OR/ASR/AST)










































































































































































































































































































































































































































































Spec
 OR
 Year
 Type
 Related aircraft
 ER.100
1950
 Experimental low-speed research version of English Electric P.1 (q.v.)
Short SB.5
 M.101
1950
 Three-seat anti-submarine aircraft
Fairey Firefly AS.7
 ER.103
1947
 Experimental research aircraft capable of Mach 1.5 at 36,000 ft - modified for P.1 as F.23/49 (q.v.)
English Electric P.1, Fairey Delta 2
 B.104
 OR.285


Vickers Valiant B.2
 F.105D



Supermarine 545
 N.107



de Havilland Sea Venom FAW.22
 UB.109
1951
 Expendable Bomber (i.e., guided missile)
Bristol Type 182
 ER.110T
1952
 Variable sweepback research monoplane
Bristol Type 183
 N.113D&P

Supermarine N.9/47 Development and Production
Supermarine Type 544 Scimitar F.1
 N.114

All-weather Naval Fighter
 F.124T
1949
 Rocket fighter
Bristol Type 178
 EH.125



Percival P.74
 B.126T
1952
 Low-level bomber
Bristol Type 186
 H.127



Westland-Sikorsky WS-55
 HCC.127


Whirlwind helicopter for Queens Flight
 C.132
 OR.315


Vickers V.1000
 F.137D



Avro 720
 F.138D
1953
 Mixed rocket-jet interception fighter - written around SR.53
Saunders-Roe SR.53
 F.139



de Havilland Sea Vixen FAW.1
 RH.142
 OR.334
 195?
VTOL transport aircraft
Fairey Rotodyne; later cancelled
 ER.143
~1953
 Experimental direct jet-lift VTOL research aircraft
Short SC.1
 HR.144

Ultra Light Helicopter
Fairey ULH
 HR.146

Development of Bristol 173 for the Royal Navy. Cancelled in favour of Westland Wessex.
Bristol Type 191 for the Royal Navy
 M.148
 N.A.39


Blackburn Buccaneer S.1
 HR.149

Development of the Bristol 173 for Royal Canadian Navy
Bristol Type 193
 H.150

Development of the Bristol 191 for the Royal Air Force
Bristol Type 192 as the Westland Belvedere HC.1
 F.153D
1953
 Fighter (Javelin development)
Gloster thin-wing Javelin
 F.155T
1955
 High-altitude fighter
 English Electric P.8
 R.156T
1955
 Mach 3 reconnaissance aircraft
 English Electric P.10
 RB.156T

Reconnaissance-bomber
Avro 730
 ER.163
195?
 Experimental Fairey Delta 2 with de Havilland Gyron engine - later cancelled
Fairey Delta 2
 ER.204D
195?
 Experimental VTOL aircraft using Bristol Pegasus
Hawker P.1127
 
 OR.301
 February 1952
 Rocket propelled interceptor
Saunders Roe SR.53, Avro 720
 
 OR.303
 195?
Lightweight fighter to intercept Soviet Tupolev Tu-4 bombers
Folland Midge
 
 OR.304
 195?
 Helicopter for RAF Coastal Command
Bristol Sycamore
 
 OR.323
 195?
 Transport aircraft - Hastings replacement
Armstrong Whitworth AW.660 Argosy, English Electric P.14
 B.126T
 OR.324
 1952
 Low-level bomber - Spec. B.126T written to this OR - cancelled 1954
Avro 721, Handley Page H.P.99 - proposals also tendered by: Bristol, Shorts & Vickers.
 F.155
 OR.329
 1955?
 Supersonic high flying interceptor
 Fairey "Delta III"; cancelled 1957
 
 OR.330
 1954
 Supersonic high flying reconnaissance aircraft
Avro 730, Handley Page HP.100
 RH.142
 OR.334
 195?
VTOL transport aircraft
Fairey Rotodyne; later cancelled
 
 GOR.339
 1956
STOL Tactical-Strike/Reconnaissance aircraft capable of Mach 2 and suitable for operation from unpaved strips - Canberra replacement
BAC TSR-2; later cancelled
 FGA.236
 GOR.345
 195?
V/STOL combat aircraft version of Hawker P.1127 - Harrier development
Hawker Siddeley Kestrel FGA.1


OR.350
 18 July 1960[48]
Maritime patrol aircraft to enter service by 1968[49]
Nimrod MR.1
 
 OR.351
 1960
 V/STOL freighter (to NATO Basic Military Requirement NMBR.4)
 English Electric P.36
 
 OR.356
 19??
 Supersonic V/STOL - Spec. SR.250
Hawker Siddeley P.1154; later cancelled
 
 OR.357
 19??
 Maritime reconnaissance aircraft - led to Nimrod
Hawker Siddeley Nimrod
 
 OR.362
 19??
 Supersonic trainer aircraft - led to Jaguar
SEPECAT Jaguar
 
 ASR.365
 196?
 Helicopter - Tactical Support
Westland Puma
 
 ASR.367
 196?
 Bomber - Vulcan B.2 - see also B.35/46
Avro Vulcan B.2
 
 ASR.368
 196?
 Bomber - Victor B.2 - see also B.35/46
Handley Page Victor B.2
 
 ASR.371
 196?
 Transport aircraft
Short Belfast
 
 ASR.372
 196?
 Trainer version of Lightning - Lightning T.5
English Electric Lightning T.5
 
 ASR.373
 196?
VIP Transport aircraft - Andover CC.2
Hawker Siddeley Andover CC.2
 
 ASR.376
 196?
 Tanker aircraft
Handley Page Victor B(K).1 / Handley Page Victor B(K).1A
 
 ASR.378
 196?
 Transport aircraft - VC10
Vickers VC10
 
 ASR.381
 196?
 Interim Maritime Patrol aircraft to Spec. MR.254 - written around Atlantique
Breguet Atlantique
 
 ASR.382
 196?
 Two-seat trainer version of P.1154 for RAF - cancelled
Hawker Siddeley P.1154
 
 ASR.384
 196?
 Harrier requirement - see also GOR.345
Hawker Siddeley Harrier
 
 ASR.385
 196?
 Phantom for RAF
McDonnell Douglas F-4M Phantom II
 
 ASR.397
 1970
 Basic jet trainer - BAC Jet Provost replacement
BAE Systems Hawk T.1
 
 ASR.400
Airborne Early Warning Aircraft
Hawker Siddeley Nimrod AEW.3
 
 ASR.409
Harrier replacement
BAe/McDonnell Douglas AV-8B Harrier GR.5
 T.301
 AST.412
Jet Provost replacement
Short Tucano T.1
 
 GOR.2
 1959
 VTOL Strike Reconnaissance aircraft
 English Electric P.31 , Gloster P.505


Naval Requirement/Aircraft (N.A.) and Naval Staff Requirements (NSR)












































































































Spec
 Req.
 Year
 Type
 Related aircraft
 U.25/49
 NA.03
Small Pilotless Target Aircraft
 N.12/45
 NA.07
Single Seat, Long Range, Naval Fighter Aircraft
Westland Wyvern TF.2
 N.114T
 NA.14
2-seat all-weather day/night fighter
 N.9/47
 NA.17
 16/09/47
 Naval Fighter Aircraft
Supermarine Type 508, 525 and 529 Scimitar prototypes
 S.14/48
 NA.21
 09/07/48
 Naval Version of Sikorsky S.51 Helicopter
Westland Dragonfly HR.1
 19/48P
 NA.27
Production of a Naval Fighter to E.1/45
Supermarine Attacker F.1
 
 NA.31
 195?
 Skeeter for RN (A.13/49 Issue 2)
Saunders-Roe Skeeter
 M.123
 NA.32
 195?
 Light carrier-borne Anti-submarine warfare aircraft to Spec. M.123
Short Seamew
 
 NA.34
 May 1952
 Hooked Swift for Carrier Trials
 
 NA.36


de Havilland Sea Vampire T.22
 M.148
 NA.39
 08/02/53
 Carrier borne strike aircraft to Spec. M.148T
Armstrong Whitworth AW.168, Blackburn Buccaneer, Short PD.13
 
 NA.43
Anti-Submarine and General Purpose helicopter
 
 NA.47
 195?
 Mixed rocket-jet interception fighter for Royal Navy
Saunders-Roe SR.177 ; cancelled 1957
 
 NSR.6451
 19??
V/STOL carrier borne fighter aircraft - Naval Hawker Siddeley Harrier
BAE Sea Harrier


General Staff Requirements (GSR) For Aircraft
























Spec
 GSR
 Year
 Type
 Related aircraft
 
 GSR.3335
 196?
 Helicopter - Westland Scout replacement
Westland Lynx
 
 GSR.3336
 196?
 Helicopter - Bell 47G Sioux replacement
Westland Gazelle


See also




  • Operational Requirement (OR)

  • British military aircraft designation systems


  • General Staff Target - the British Army equivalent

  • Specification (technical standard)

  • List of Operational Requirements for nuclear weapons



Notes





  1. ^ The requirement is often incorrectly stated to have required the use of Rolls-Royce Vulture engines. For example, by Thetford, Aircraft of the Royal Air Force since 1918, ("Avro Manchester") and Mason, The British Bomber ("Avro Manchester"). It is denied by Buttler, Projects, pp. 100–2, and Sinnott, Aircraft Design, pp. 165–71.


  2. ^ HP.66 would have had Hercules 100 engines, HP.69 turbo-supercharged Hercules.


  3. ^ According to Buttler (p.144) no official sources acknowledge the B-78 as being tendered to the specification.




References


Citations




  1. ^ abcdefghijklmn Meekcoms & Morgan (1994).


  2. ^ abcdefghijklm London (2003), p. 283.


  3. ^ Mason (1992), p. 446.


  4. ^ ab Mason (1992), p. 123.


  5. ^ Mason (1992), p. 128.


  6. ^ Mason (1992), p. 130.


  7. ^ Mason (1992), p. 119.


  8. ^ abc Mason (1992), p. 150.


  9. ^ Mason (1994), p. 106.


  10. ^ Mason (1994), pp. 95, 98.


  11. ^ ab Mason (1992), p. 113.


  12. ^ Mason (1992), p. 116.


  13. ^ Mason (1992), p. 127.


  14. ^ Andrews & Morgan (1987), p. 27.


  15. ^ ab Mason (1992), p. 124.


  16. ^ Mason (1992), p. 117.


  17. ^ ab Mason (1994), p. 112.


  18. ^ Mason (1994), p. 113.


  19. ^ ab Mason (1992), p. 100.


  20. ^ Taylor (1974), p. 67.


  21. ^ Taylor (1974), p. 71.


  22. ^ ab Mason (1994), p. 89.


  23. ^ Mason (1994), p. 99.


  24. ^ London (2003), pp. 39–40.


  25. ^ Mason (1992), p. 149.


  26. ^ Mason (1992), p. 147.


  27. ^ Mason (1992), p. 145.


  28. ^ Barnes, C. H.; James, D. N (1989). Shorts Aircraft since 1900. London: Putnam. p. 159. ISBN 0-85177-819-4..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  29. ^ London (2003), pp. 84–85.


  30. ^ London (2003), p. 75.


  31. ^ Andrews & Morgan (1987), p. 87.


  32. ^ Andrews & Morgan (1987), p. 90.


  33. ^ Andrews & Morgan (1988), pp. 127–129.


  34. ^ Gustin, Emmanuel. "No allowance sighting". Flying Guns. Retrieved 1 February 2007.


  35. ^ abcdefghijklmnopqrstuvwxyzaaabacadaeafagahaiajak Meekcoms & Morgan (1994), pp. 187–202.


  36. ^ Delve, Ken (2005). Bomber Command. Havertown: Pen and Sword. ISBN 978-1-78383-327-6.


  37. ^ abc Buttler (2004), pp. 74–75.


  38. ^ Buttler (2004), pp. 109–111.


  39. ^ Jackson (1974).


  40. ^ ab Buttler (2004).


  41. ^ Buttler (2004), pp. 87–88.


  42. ^ Buttler (2004), p. 87.


  43. ^ ab Buttler (2004), p. 62.


  44. ^ Buttler (2004), p. 228.


  45. ^ Buttler (2004), p. 129–130.


  46. ^ London (2003), p. 285.


  47. ^ Buttler (2004), p. 144.


  48. ^ "Air Staff Target OR.350". 18 July 1960. Missing or empty |url= (help)


  49. ^ Gibson, Chris (2015). Nimrod's Genesis. Ottringham: Hikoki Publications. pp. 116–117. ISBN 978-190210947-3.



Bibliography



  • Aeroplane Monthly magazine. Various articles, various issues, 1973–1987.


  • Andrews, C. F.; Morgan, E. B. (1987). Supermarine Aircraft since 1914. London: Putnam. ISBN 0-85177-800-3.


  • Andrews, C. F.; Morgan, E. B. (1988). Vickers Aircraft since 1908. London: Putnam. ISBN 0-85177-815-1.


  • Buttler, Tony (2004). Secret Projects: British Fighters and Bombers 1935–1950 (British Secret Projects 3). Leicester, UK: Midland Publishing. ISBN 1-85780-179-2.


  • Green, William (1975). Famous Bombers of the Second World War (2nd ed.). London: MacDonald & Jane's. ISBN 0-356-08333-0.


  • Jackson, A. J. (1974). British Civil Aircraft since 1919. London: Putnam. ISBN 0-370-10014-X.


  • London, Peter (2003). British Flying Boats. Stroud, UK: Sutton Publishing. ISBN 0-7509-2695-3.


  • Mason, Francis K. (1992). The British Fighter since 1912. Annapolis, Maryland, USA: Naval Institute Press. ISBN 1-55750-082-7.


  • Mason, Francis K. (1994). The British Bomber since 1914. London: Putnam. ISBN 0-85177-861-5.


  • Meekcoms, K. J.; Morgan, E. B. (1994). The British Aircraft Specifications File. London: Air Britain. ISBN 0-85130-220-3.


  • Munson, Kenneth (1970). Bombers Between the Wars 1919-39 - Including Patrol and Transport Aircraft (Blandford Colour Series). London: Associate R.Ae.S. ISBN 0-7137-0514-0.


  • Munson, Kenneth (1972). Bombers In Service - Patrol and Transport Aircraft Since 1960 (Blandford Colour Series). London: Associate R.Ae.S. ISBN 0-7137-0586-8.


  • Munson, Kenneth (1975). Fighters 1939-45 - Attack and Training Aircraft (Blandford Colour Series). London: Associate R.Ae.S. ISBN 0-7137-0378-4.


  • Munson, Kenneth (1977). The Pocket Encyclopedia of Bombers at War (Blandford Colour Series, New Orchard Edition). London: Associate R.Ae.S. ISBN 1-85079-028-0.: This is a combined volume made up of the following separate books:


    • Munson, Kenneth (1975). Bombers Patrol and Transport Aircraft 1939–1945 (Blandford Colour Series). London: Associate R.Ae.S.

      ISBN 0-7137-0379-2


    • Munson, Kenneth (1977). Bombers Patrol and Reconnaissance Aircraft 1914–1919 (Blandford Colour Series). London: Associate R.Ae.S.

      ISBN 0-7137-0632-8.




  • Sinnott, Colin (2001). The RAF and Aircraft Design 1923–1939: Air Staff Operational Requirements. London: Frank Cass. ISBN 0-7146-5158-3.


  • Taylor, H. A. (1974). Fairey Aircraft since 1915. London: Putnam. ISBN 0-370-00065-X.



External links




  • "Handley Page Type List". Handley Page.com. Archived from the original on 7 February 2009.


  • Gibson, Chris. "United Kingdom Aerospace and Weapons Projects: Post War Operational Requirements". Skomer.u-net. Archived from the original on 24 October 2012.


  • "Unusual Aircraft". British Projects. 4 January 1999. Archived from the original on 25 October 2009.









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