| Patrick Chrestien Gordon-Walker | 7 October 1947 | 28 February 1950 |
| Arthur Douglas Dodds-Parker | October 1954 | December 1955 |
| John Adrian Louis Hope | November 1956 | January 1957 |
| Andrew Robert Buxton Cavendish, Duke of Devonshire | 1960 | 1962 |
| Bernard Richard Braine | February 1961 | July 1962 |
| Nigel Thomas Loveridge Fisher | October 1963 | October 1964 |