General Staff Number |
Service name |
A1 |
A1E1 Vickers 'Independent",[1] one built but not taken into service |
A2 |
A2E1 and A2E2: Medium Tank Vickers Mk I and Medium Tank Vickers Mk I (CS version)[2] |
A3 |
3-man tank (Royal Ordnance Factory); Carrier MG Mk I[3] |
A4 |
Vickers Carden-Loyd light tanks. See Light Tank Mk IV, A4E11 and A4E12 referred to the Vickers-Carden-Loyd Light Amphibious Tank |
A5 |
Vickers Carden-Loyd 3-man light tanks. See Light Tank Mk V and Light Tank Mk VI |
A6 |
A6 Medium Tank, "16 Tonners"*, led to production of the Medium Tank Mk III |
A7 |
A7 Medium Tank, 3 development tanks built, did not enter service[4] |
A8 |
A8 Experimental Medium Tank, Project cancelled* |
A9 |
Tank, Cruiser, Mk I |
A10 |
Tank, Cruiser, Mk II |
A11 |
Tank, Infantry, Mk I, Matilda I |
A12 |
Tank, Infantry, Mk II, Matilda II |
A13 A13 Mk.II A13 Mk.III |
Tank, Cruiser, Mk III Tank, Cruiser, Mk IV Tank, Cruiser, Mk V, Covenanter |
A14 |
A14E1 'heavy' Cruiser, prototype built, did not enter service[5] |
A15 |
Tank, Cruiser Mk VI, Crusader[6] |
A16 |
A16E1 'heavy' Cruiser, prototype built, did not enter service[7] |
A17 |
Tank, Light, Mk VII, Tetrarch |
A18 |
(cancelled)* |
A19 |
(cancelled)* |
A20 |
A20 Infantry Tank, prototype built, did not enter service |
A21 |
(cancelled)* |
A22 A22D A22F |
Tank, Infantry, Mk IV, Churchill Gun Carrier, 3in, Mk I, Churchill Tank, Infantry, Mk IV, Churchill VII |
A23 |
Proposed "Heavy cruiser" based on shortened Churchill tank hull design with reduced armour. Cancelled)* |
A24 |
Tank, Cruiser, Mk VII, Cavalier* |
A25 |
Tank, Light, Mk VIII, Harry Hopkins* |
A26 |
cancelled* |
A27L |
Tank, Cruiser, Mk VIII, Centaur |
A27M |
Tank, Cruiser, Mk VIII, Cromwell |
A28 |
cancelled, was to be an Infantry tank variant of Cromwell* |
A29 |
cancelled, was to be a 17-pdr armed assault tank named Clan* |
A30 |
Tank, Cruiser, Mk.VIII, Challenger, 17-pdr armed SP 17pdr, A30 (Avenger) |
A31 |
cancelled, was to be a Cromwell with heavier armour* proposed by Rolls Royce |
A32 |
cancelled, was to be a Cromwell with heavier armour similar to Churchill* |
A33 |
Tank, Heavy Assault, 'Excelsior'*, two built. A27 hull with US M6 heavy tank suspension by English Electric |
A34 |
Tank, Cruiser, Comet I |
A35 |
(cancelled alternative to A34, lengthened hull and enlarged turret ring to accommodate a 17-pdr)* |
A36 |
(cancelled)* |
A37 |
(cancelled)* |
A38 |
Tank, Infantry, Valiant* single example built |
A39 |
Tank, Heavy Assault, Tortoise*, six prototypes built |
A40 |
(cancelled, was to be a heavier A30)* |
A41 |
Tank, Cruiser, Centurion I |
A42 |
Tank, Infantry, Mk IV, Churchill VII (A22F redesignated 1945) |
A43 |
Tank, Infantry, Black Prince* |
A44 |
(cancelled, similar to A35 with thicker armour)* |
A45 |
A45 Infantry Support Tank later becoming the FV201 universal tank* |
A46 |
Light Tank |
Project numbering moves to the FV series from A45/A46 onwards. A46 may have been the last of the British tanks to get the A series designation. |