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Peter Thorneycroft (1 April, 1964–16 October, 1964)

Denis Healey (16 October, 1964–19 June, 1970)

Peter Carington, Lord Carrington (20 June, 1970–8 January, 1974)

Ian Gilmour (8 January, 1974–4 March, 1974)

Roy Mason (March 5, 1974–September 10, 1976)

Frederick Mulley (September 10, 1976–May 4, 1979)

Francis Pym (May 5, 1979–January 5, 1981)

John Nott (January 5, 1981–January 6, 1983)

Michael Heseltine (January 6, 1983–January 7, 1986) (Resigned)

George Younger (January 9, 1986–July 24, 1989)

Tom King (July 24, 1989–April 10, 1992)

Malcolm Rifkind (April 10, 1992–July 5, 1995)

Michael Portillo (July 5, 1995–May 2, 1997)

George Robertson (May 3, 1997–October 11, 1999)

Geoff Hoon (October 11, 1999–May 6, 2005)

John Reid (May 6, 2005—May 5, 2006)

Des Browne (May 5, 2006 — present)