United Kingdom
- Armstrong Whitworth Ape – aerodynamic test vehicle
- Armstrong Whitworth A.W.52
- Avro 707 – aerodynamic proof of concept for Avro Vulcan bomber
- Avro Ashton – experimental jet transport
- Baynes Bat experimental glider
- Blackburn B-20
- Boulton Paul P.6 – used for wing research
- Boulton Paul P.92 – half scale proof of concept
- Boulton Paul P.111
- Boulton Paul P.120
- Bristol Type 138 – high altitude research aircraft
- Bristol 188
- British Aerospace EAP – technology demonstrator
- Cierva W.9 experimental helicopter
- de Havilland DH 108 Swallow – swept wing tailless transsonic research aircraft
- BAC 221 – modified fairey Delta 2 for high speed delta research
- English Electric P1A
- Fairey Battle – testbed for a variety of engines
- Fairey Delta 1
- Fairey Delta 2
- Fairey Jet Gyrodyne – jet powered rotor
- Fairey Rotodyne
- Folland Fo.108 – engine test bed
- General Aircraft GAL.56
- Gloster E.28/39 – early jet engine research
- Gloster Meteor F8 "Prone Pilot" – prone position flight control research
- Hafner A.R.III Gyroplane – experimental autogyro
- Handley Page H.P.20 – aerodynamic slot research
- Handley Page H.P.75 Manx – tailless flight research
- Handley Page HP.88 – supporting development of Handley Page Victor
- Handley Page HP.115 – low speed delta wing research
- Hawker P.1072
- Hawker P.1052
- Hawker P.1127 – V/STOL fighter
- Hillson Bi-mono – slip wing research
- Hunting H.126 – blown flap research
- Miles Libellula – tandem wing fighter and bomber designs
- Miles M.3E Gillette Falcon – flight research
- Miles M.30 – blended wing body design
- Miles M.39B Libellula – tandem wing research
- Miles M.52 – supersonic research
- Parnall Parasol for wing pressure and aileron test as well as operation from submarines.
- Rolls-Royce Thrust Measuring Rig – VTOL low speed control test rig
- Saro Shrimp experimental flying boat
- Short Cockle – testing metal construction techniques for aircraft hulls
- Short Mayo Composite – tested piggyback aircraft concept
- Short S.6 Sturgeon – testing aluminium construction techniques for aircraft
- Short SB.1 – tailess glider for isoclininc wing research
- Short SB5 – prove/develop wing for English Electric Lightning
- Short SB.4 Sherpa
- Short SC.1 – vtol research
- Short Mussel – testing metal construction techniques for aircraft floats
- Silent Aircraft eXperimental Design (SAX-40) Cambridge-MIT study in aircraft noise reduction through the Silent Aircraft Initiative.
- Supermarine 508 – vee tail
- Cierva W.9 – helicopter with anti-torque jet efflux
- Vickers Type 618 Nene-Viking – jet engine testbed
- Vickers Type 470 and Type 486 Wellington – Whittle jet engine testbeds
- Vickers Type 602 Wellington Mark X – Rolls Royce Dart turboprop testbed
- Westland-Hill Pterodactyl
- Youngman-Baynes High Lift
Read more about this topic: List Of Experimental Aircraft
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