According to Wikipedia: "The Centurion, introduced in 1945, was the primary British main battle tank of the post-World War II period. It was a successful tank design, with upgrades, for many decades. The chassis was also adapted for several other roles.
Development of the tank began in 1943 and manufacture of the Centurion began in January 1945, six prototypes arriving in Belgium less than a month after the war in Europe ended in May 1945. It first entered combat with the British Army in the Korean War in 1950, in support of the UN forces. The Centurion later served in the Indo-Pakistani War of 1965, where it fought against US-supplied M47 and M48 Patton tanks and they served with the Royal Australian Armoured Corps in Vietnam."