Post-war British research aircraft and prototypes
Throughout the war the United Kingdom had engaged on highly original research and development, much of which spilled over into the post-war years. (Much also spilled to allies, especially in the form of jet engines.) Noted below are types built for research or as development aircraft or to meet a military specification subsequently cancelled. Not included are variants of types serving as flying laboratories (Comet, Viscount, Britannia, BAC-111, Andover) or as engine or radar test-beds, the latter too numerous to mention. Neither are the many civilian aircraft given temporary military serials in the 1950s when engaged on trooping charters.
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Tailless aircraft and flying wings
Pterodactyl, Manx, Bat, GAL56, GAL61, DH108 Swallow, AW52G, AW52, (Me163, Horten IV), SB1, SB4, ML Utility
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Deltas
P.111, P120, FD.1, Avro 707, AW58, FD.2, BAC 221, HP115
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Manned models
SB5, HP88/Supermarine 521/YB2, Wild Goose, Swallow
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Jets and rockets
E.28/39, GA.1, GA.2, SR.A/1, Supermarine types 392, 508, 510, 517, 525, 528, 529, 535, 545, Hawker P.1040, P.1052, P.1072, P.1081, SR.53, SR.177, EAP
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Helicopters
Cierva W.9, Gyrodyne, Jet Gyrodyne, Rotodyne, Bevan E.1/48, Cierva W.11, Bristol 173, Percival P.74
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Vertical take-off and landing
Thrust measuring rig (Flying bedstead), SC.1, P.1127, Kestrel
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General research
Youngman-Baynes HL.1, Reid and Sigrist RS.4, Marshalls MA.4, Hermes, Tudor, Ashton, Apollo, Bristol 188, Hunting H.126
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Cancelled types
TSR.2, Spearfish, Ultralight, Midge, Gnat, Fury, Shetland, Sperrin, Seamew, Spiteful, Seafang, Seagull
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Unsuccessful contenders
Auster Type N, Type S, Heston JC.6, Firecrest, YA.7, YA.8, YB.1, HPR.2, Student, SB.3
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