AEC (Associated Equipment Company)
- Mk I: original version with turret from a Valentine tank, 129 built.
- Mk II: heavier turret with a 6 pounder gun, redesigned front hull, 158 hp diesel engine.
- Mk III: Close Support Armoured Car a Mk II with 6 pounder replaced with the QF 75 mm gun.
- AA: Crusader AA turret with twin Oerlikon cannon capable of high elevation to engage enemy aircraft. Did not enter production due to Allied air superiority in Northern Europe.