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
Diana Gould – Margaret Thatcher exchange Diana Gould – Margaret Thatcher exchange An exchange on 24 May 1983 between Diana Gould, an English schoolteacher and former Women's Royal Naval Service meteorological officer, and Prime Minister Margaret Thatcher was voted in 1999 as one of Britain's most memorable television spots. Gould confronted Thatcher on the BBC current-affairs programme "Nationwide" over the sinking of the "General Belgrano" during the 1982 Falklands War between the United Kingdom and Argentina. Gould was appearing as a member of the public on "Nationwide"s "On the Spot" live election special. The "ARA General Belgrano", an Argentine war ship, sank with the loss of