6. c. 64) was an Act of Parliament which extended the British conscription of the Second World War long after the war-time need for it had expired, in the form of "National Service".

However, financial crises, the advent of the Cold War and the Malayan Emergency caused the act to be amended before coming into force.

If they stopped working in these industries before this period of eight years ended (that is, before turning 25), they could be called up for National Service.

In October 1950, in response to the British involvement in the Korean War, the service period was extended to two years, although this was waived for those who had been admitted to but would otherwise be unable to commence university courses in autumn 1950.

[3] In November 1960 the last men entered service, as call-ups formally ended on 31 December 1960, and the last National Servicemen left the armed forces in May 1963.