British Prime Minister during the reign of Queen Elizabeth II
．Winston Churchill: Term of office October 1951 to April 1955
．Anthony Eden: Term of office April 1955 to January 1957
．Harold Macmillan: Term of office January 1957 to October 1963
．Alec Douglas-Home: Term of office October 1963 to October 1964
．Harold Wilson: Two terms, October 1964 to June 1970 and March 1974 to April 1976
．Edward Heath: Term of office June 1970 to March 1974
．James Callaghan: Term of office from April 1976 to May 1979
．Margaret Thatcher: Term of office from May 1979 to November 1990
．John Major: Term of office from November 1990 to May 1997
．Tony Blair: Term of office from May 1997 to June 2007
．Gordon Brown: Term of office from June 2007 to May 2010
．David Cameron: Term of office from May 2010 to July 2016
．Theresa May: Term of office July 2016 to July 2019
．Boris Johnson: Term July 2019 to September 6, 2022
．Liz Truss: Term begins 6 September 2022 (RELATED: Zhuohuisi appointed by the Queen as British Prime Minister）