Minister of Defence (United Kingdom)

Minister of Defence
Longest serving
Winston Churchill

10 May 1940 – 27 July 1945
Ministry of Defence (1947–1964)
StatusAbolished
Member ofCabinet
Reports toPrime Minister
AppointerThe Monarch
(on the advice of the Prime Minister)
Term lengthAt His Majesty's pleasure
PrecursorMinister for Co-ordination of Defence
Formation10 May 1940
First holderWinston Churchill
Final holderPeter Thorneycroft
Abolished1 April 1964
Superseded bySecretary of State for Defence

The post of Minister of Defence was responsible for co-ordination of defence and security from its creation in 1940 until its abolition in 1964. The post was a Cabinet-level post and generally ranked above the three service ministers, some of whom, however, continued to also serve in Cabinet.

The Ministry of Defence was created in 1947.