Edward Heath of the Conservative Party formed the Heath ministry and was appointed Prime Minister of the United Kingdom by Queen Elizabeth II on 19 June 1970, following the general election of the previous day. The Heath ministry ended after the February 1974 general election, which produced a hung parliament, leading to the formation of a minority government by Harold Wilson of the Labour Party.
Heath had been elected Leader of the Conservative Party in 1965 – succeeding Alec Douglas-Home – within a few months of the party's election defeat after 13 years in government. In the following year, his first general election as Leader resulted in defeat as Wilson's Labour government increased its majority. The Conservatives enjoyed a surge in support over the next two years as the British economy went through a period of deflation that culminated in a devaluation, at the same time that the merging of businesses was encouraged. Unemployment rose significantly, but when Wilson called a general election for June 1970, the opinion polls all pointed towards a third successive Labour victory. It was a major surprise when the Conservatives won with a majority of 30 seats.