Taylorcraft Plus D – re-engined Plus C.
Model D/1 – Auster I – military version of Plus C with enlarged windows.
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Model F – Auster II – re-engined Auster I Lycoming 0-290-3 engine
Model G – Auster IV – Modified fuselage with extended rear cabin glazing and Lycoming 0-290-3 engine
Model H – Experimental tandem two-seat training glider converted from Taylorcraft B.
Model J – Auster V – As Auster IV with blind-flying instruments and Vacuum System Lycoming 0-290-3/1 engine
Auster J family
Mk 5 – Civil conversion of Auster V with Lycoming 0-290-3(C) engines
Mk 5 Alpha – new-build Auster Mk5 aircraft with Lycoming 0-290-3(C) engines
Mk5-150 – Conversion of Civil Auster V with Lycoming 0-320 engine
J/1 Autocrat – three-seat high-winged monoplane light aircraft (fitted with Blackburn Cirrus Minor II engine)
Auster J/1A Autocrat – four-seat version of Autocrat
Auster J/1B Aiglet – re-engined agricultural version of Autocrat ([De Havilland Gipsy Major1] engine)
Auster J/1N – Conversion of Auster J/1 Autocrat from Cirrus MinorII engine to Gipsy Major1 engine.
Auster J/1N Alpha – NEW built Auster J/1N aircraft (De Havilland Gipsy Major1 engine)
Auster J/1S Autocrat – Conversion to De-Havilland Gipsy Major10 Mk2 engine.
J/1U Workmaster – agricultural version of the Alpha Lycoming 0-360 engine
Auster J/1Y – Conversion of Auster J/1 Series to Lycoming 0-320 Engine Predecessor of Auster D5/160 Auster D5
J/2 Arrow
J/3 Atom – low-powered version of Arrow with Continental engine
J/4 – Arrow with Blackburn Cirrus Minor I engine Predecessor of Auster D4/108
J/5 Adventurer – three-seat high-wing monoplane light aircraft
Auster J/5 Adventurer
Auster J/5A Adventurer
J/5 Autocar
Auster J/5B Autocar – four-seat high-winged monoplane light aircraft
Auster J/5E Autocar
Auster J/5G Autocar
Auster J/5P Autocar
Auster J/5T Autocar – one only built
Auster J/5V Autocar
J/5 Aiglet Trainer – aerobatic version 32 ft wingspan
Auster J/5F Aiglet Trainer
Auster J/5K Aiglet Trainer
Auster J/5L Aiglet Trainer
Auster J/8L Aiglet Trainer
J/5 Alpine – improved Aiglet Trainer with 36 ft wingspan
Auster J/5R Alpine
Auster J/5Q Alpine
Model K – Auster AOP6 – post-war military Air Observation aircraft.
Auster 6A Tugmaster – glider towing conversion of the Auster 6
Auster 6B / Beagle Terrier – civil conversion of the Auster 6
Model L – proposed two or three seat low-wing monoplane based on the Model G airframe with a Lycoming O-290-3 engine, not built.
Model M – Auster A.2/45 – 2 or 3-seat high-wing AOP aircraft, prototype only.
Model N – Auster A.2/45 – re-engined Model M, prototype only.
Model P – Auster Avis – four-seater based on J/1 with slimmer fuselage, two built.
Model Q – Auster T7 – two-seat trainer version of AOP6.
Model S – AOP aircraft based on AOP6 with enlarged tail, prototype only.
Model A3 – two-seat light aircraft project with a Blackburn Cirrus Minor engine, not built.
Model A4 – two-seat development project of current (1948) designs with a Blackburn Cirrus Minor 2 engine, not built.
Model A5 – four-seat army co-operation project with a De Havilland Gipsy Major 10 engine, two version planned a conventional landing gear for air ambulance work and a tricycle landing gear version for communications and reconnaissance work, not built.
Model A6 – variant of the A4 with a Cirrus Minor engine driving a geared ducted fan, not built.
Model A7 – light twin project, not built.
Model A8 – three-seat AOP project with a Bombardier engine, not built.
Model A9 – Project to meet a Royal Air Force requirement for a two-seat training aircraft, the Percival Provost was selected and the A9 was not built.
Model B1 – mid-wing AOP project, not built.
Model B3 – radio-controlled target drone.
Model B4 – Auster B4 – four-seat high-winged ambulance aircraft
Model B5 – Auster AOP9 – 1950s military air observation aircraft
Model B6 – parasol-wing agricultural project with bubble canopy, not built.
Model B8 – Auster B8 Agricola – low-winged agricultural aircraft
Model B9 – ramjet helicopter project, not built
Model C4 – Auster Antarctic – modified Auster T7 for Antarctic support.
Model C6 – Auster Atlantic – four-seat high-wing touring monoplane with tricycle undercarriage, one built.
Model D4 – Auster D4 – two-seat development of the Auster Arrow.
Model D5 – Auster D5 – re-engined version of Auster Alpha with modified tail, developed as the Beagle Husky
Model D6 – Auster D6 – four-seat development of Auster Autocar
Model D8 – original designation of Beagle Airedale.
Model E3 – AOP9 with modified engine as the AOP11.