| Robert Walpole |
1715-1742 |
| William Pitt |
1783-1801, 1804-1806 |
| Henry Addington |
1801-04 |
| Lord Grenville |
1806-1807 |
| Duke of Portland |
1807-1809 |
| Spencer Perceval |
1809-1812 |
| Lord Liverpool |
1812-1827 |
| George Canning |
1827 |
| Viscount Goderich |
1827-28 |
| Duke of Wellington |
1828-1830 |
| Earl Grey |
1830-1834 |
| Lord Melbourne |
1834, 1835-1841 |
| Sir Robert Peel |
1834-1835, 1841-1846 |
| Lord John Russell |
1846-1852, 1865-1866 |
| Earl of Derby |
1852, 1858-1859, 1866-1868 |
| Earl of Aberdeen |
1852-1855 |
| Lord Palmerston |
1855-1858, 1859-1865 |
| Benjamin Disraeli |
1868, 1874-1880 |
| William Gladstone |
1868-1874, 1880-1885, 1886, 1892-1894 |
| Marquis of Salisbury |
1885-1886, 1886-1892, 1895-1902 |
| Earl of Rosebery |
1894-1895 |
| Arthur Balfour |
1902-1905 |
| Henry Campbell-Bannerman |
1905-1908 |
| Herbert Asquith |
1908-1916 |
| David Lloyd George |
1916-1922 |
| Andrew Bonar Law |
1922-1923 |
| Stanley Baldwin |
1923-1924, 1924-1929, 1935-1937 |
| James Ramsay MacDonald |
1924, 1929-1935 |
| Neville Chamberlain |
1937-1940 |
| Winston Churchill |
1940-1945, 1951-1955 |
| Clement Attlee |
1945-1951 |
| Anthony Eden |
1955-1957 |
| Harold Macmillan |
1957-1963 |
| Alec Douglas-Home |
1963-1964 |
| Harold Wilson |
1964-1970, 1974-76 |
| Edward Heath |
1970-1974 |
| James Callaghan |
1976-1979 |
| Margaret Thatcher |
1979-1990 |