From 1935, the Ordnance QF 2-pounder was the staple Anti-Tank weapon used by the British Army, throughout the Empire. It only started to be replaced in 1942 as the 6-Pounder became available. The Ordnance 2 Pounder found itself the only AT gun of the British army from 1939 to 1942 at least, when the 6-Pdr was introduced on the front-line. It saw action for most of the war in many theaters of operations with the Commonwealth armies.
However in North Africa against up-armoured Panzer III and IV it proved useless, with limited success at short range on vulnerable spots, and the situation would come to worsen over time.It was, however, found adequate in the southern Pacific and eastern Indies against weekly protected Japanese tanks.