| Date |
Prime Minister |
Party |
| 1865 - 1866 |
John Russell (Earl Russell) |
Liberal |
| 1866 - 1868 |
Edward Stanley (Earl of Derby) |
Conservative |
| 1868 Feb - Dec |
Benjamin Disraeli |
Conservative |
| 1868 - 1874 |
William Ewart Gladstone |
Liberal |
| 1874 - 1880 |
Benjamin Disraeli |
Conservative |
| 1880 - 1885 |
William Ewart Gladstone |
Liberal |
| 1885 - 1886 |
Robert Gascoyne-Cecil (Marquess of Salisbury) |
Conservative |
| 1886 Feb - July |
William Ewart Gladstone |
Liberal |
| 1886 - 1892 |
Robert Gascoyne-Cecil (Marquess of Salisbury) |
Conservative |
| 1892 - 1894 |
William Ewart Gladstone |
Liberal |
| 1894 - 1895 |
Archibald Primrose (Earl of Rosebery) |
Liberal |
| 1895 - 1902 |
Robert Gascoyne-Cecil (Marquess of Salisbury) |
Conservative |
| 1902 - 1905 |
Arthur James Balfour |
Conservative |
| 1905 - 1908 |
Sir Henry Campbell-Bannerman |
Conservative |
| 1908 - 1916 |
Herbert Henry Asquith |
Liberal |
| 1916 - 1922 |
David Lloyd George |
Liberal |
| 1922 - 1923 |
Andrew Bonar Law |
Conservative |
| 1923 - 1924 |
Stanley Baldwin |
Conservative |
| 1924 Jan - Nov |
James Ramsay MacDonald |
Labour |
| 1924 - 1929 |
Stanley Baldwin |
Conservative |
| 1929 - 1931 |
James Ramsay MacDonald |
Labour |
| 1931 - 1935 |
James Ramsay MacDonald |
Labour |
| 1935 - 1937 |
Stanley Baldwin |
Conservative |
| 1937 - 1940 |
Neville Chamberlain |
Conservative |
| 1940 - 1945 |
Winston Churchill |
Conservative |
| 1945 May - July |
Winston Churchill (Caretaker Primeminister) |
Conservative |
| 1945 - 1951 |
Clement Atlee |
Labour |
| 1951 - 1955 |
Winston Churchill |
Conservative |
| 1955 - 1957 |
Anthony Eden |
Conservative |
| 1957 - 1963 |
Harold Macmillan |
Conservative |
| 1963 - 1964 |
Alec Douglas Home |
Conservative |
| 1964 - 1970 |
Harold Wilson |
Labour |
| 1970 - 1974 |
Edward Heath |
Conservative |
| 1974 - 1976 |
Harold Wilson |
Labour |
| 1976 - 1979 |
James Callagham |
Labour |
| 1979 - 1990 |
Margaret Thatcher (First Woman Prime Minister) |
Conservative |
| 1990 - 1997 |
John Major |
Conservative |
| 1997 - 2007 |
Tony Blair |
Labour |
| 2007 - 2010 |
Gordon Brown |
Labour |
| 2010 - Present |
David Cameron (Conservative) |
Conservative / Liberal Coalition |