Third Thatcher ministry to make way for a leader more likely to win the next general election. Her successor was the Chancellor of the Exchequer John Major, who was elected on 27 November 1990, and who at 47 became the youngest Conservative Prime Minister of the 20th century. <section begin="June 1987 to July 1989" /> <section begin="July 1989 to November 1990" /> Members of the Cabinet are in bold face. Third Thatcher ministry Margaret Thatcher was Prime Minister of the United Kingdom from 4 May 1979 to 28 November 1990, during which time she led a Conservative government. She was the first woman
Denis Thatcher Denis Thatcher Sir Denis Thatcher, 1st Baronet, (10 May 1915 – 26 June 2003) was a British businessman and the husband of Margaret Thatcher, who was the first female Prime Minister of the United Kingdom. The first man married to a British prime minister, he is the last person outside the British royal family to have been awarded a hereditary title, which he was granted in 1990. Thatcher was born in Lewisham, London, as the first-born child of a New Zealand-born British businessman, Thomas Herbert "Jack" Thatcher. At age eight he entered a preparatory school as a boarder in Bognor