The Vickers Machine Gun was an improved version of the Maxim gun that had been in widespread use before the introduction of the Vickers and for some time, in many armies, the two guns served alongside one another.
(Source: War Office, 1951a)
The Vickers Machine Gun was used in many variants by the British and Commonwealth and many other forces around the World.
The guns that saw service with the British, and Commonwealth, were those listed below: