Divisional insignia of the British 2nd Armoured Division, during the Second World War. Mike Chappell wrote that the insignia was adopted and painted on vehicles, but probably not worn on uniforms.
Chappell, Michael (1987)       British Battle Insignia 1939–1940, Men-At-Arms, 2, London:  Osprey  ISBN:  978-0-85045-739-1. 
Cole, Howard (1973)       Formation Badges of World War 2: Britain, Commonwealth and Empire, London:  Arms and Armour Press  OCLC:   464094349.