Some Vulcans were converted for tanker duties (British Aerospace)

From the mid-1950's until 1969 the Avro Vulcan, Handley Page Victor and the Vickers Valiant made up RAF Bomber Command's 'V' Bomber Force, Britain's airborne strategic nuclear deterrent. The Vulcan, the first four-engined aircraft to use the delta wing, entered RAF service in 1957 and served as a nuclear weapon platform for almost all of its service life.

At first armed only with free fall nuclear bombs, from 1963 the Vulcan also carried the Blue Steel stand-off missile. The Vulcan went to war in 1982 when it used conventional weapons against Argentine positions on the Falkland Islands and it was finally withdrawn from service in 1984, replaced by the Tornado.