Winston Churchill, 1951-1955 Anthony Eden, 1955-1957 Harold Macmillan, 1957-1963 Alec Douglas-Home, 1963-64 Harold Wilson, 1964-1970 Edward Heath, 1970-1974 Harold Wilson, 1974-1976 (secondo incarico) James Callaghan, 1976-1979 Margaret Thatcher, 1979-1990 John Major, 1990-1997 Tony Blair, 1997-2007 Gordon Brown 2007-2010 David Cameron, 2010-2016 Theresa May, 2016-2019 Boris Johnson, 2019-2022, Liz Truss 2022.