| St Andrew St John |
April 1783 | December 1783 |
| Charles Bagot |
August 1807 | October 1809 |
| Cospatrick Alexander Home, Lord Dunglass |
1828 | 1830 |
| George Augustus Frederick Cowper, Viscount Fordwich |
13 November 1834 | 17 November 1834 |
| Edward Henry Smith Stanley, Baron Stanley |
1852 | 1855 |
| John Wodehouse, Baron Wodehouse of Kimberley |
1852 | 1856 |
| Austen Henry Layard |
12 February 1852 | 21 February 1852 |
| Henry Petty-Fitzmaurice, Earl of Shelburne |
1856 | 1858 |
| John Wodehouse, Baron Wodehouse of Kimberley |
1859 | 1861 |
| Austen Henry Layard |
15 August 1861 | 26 June 1866 |
| Sir Charles Wentworth Dilke, bt |
1880 | 1882 |
| James Bryce |
7 February 1886 | 20 July 1886 |
| Rt Hon Sir James Fergusson, bt |
4 August 1886 | 22 September 1891 |
| Rt Hon Sir Edward Grey, bt |
1892 | 1895 |
| Henry Algernon George Percy, Earl Percy |
9 October 1903 | 4 December 1905 |
| Edgar Algernon Robert Cecil |
1915 | 1916 |
| Rt Hon Robert Anthony Eden |
1931 | 1934 |
| Rt Hon George Henry Hall |
September 1943 | July 1945 |
| Christopher Paget Mayhew |
October 1946 | March 1950 |
| William David Ormsby-Gore |
November 1956 | January 1957 |
| Rt Hon John Dennis Profumo |
1958 | 1959 |
| William Thomas Rodgers |
1967 | 1968 |