| Waldorf Astor | 1919 | 1921 |
| Arthur Greenwood | 1924 | |
| Sir Howard Kingsley Wood | November 1924 | June 1929 |
| Arabella Susan Lawrence | 1929 | 1931 |
| Alfred Ernest Brown | 1931 | 1932 |
| Robert Spear Hudson | 1936 | 1937 |
| Robert Hamilton Bernays | 1937 | 1939 |
| Florence Gertrude Horsburgh | 1940 | 1945 |
| Lewis John Edwards | 1947 | 1949 |
| Arthur Blenkinsopp | February 1949 | October 1951 |
| Margaret Patricia Hornsby-Smith | 1951 | 1957 |
| John Kenyon Vaughan-Morgan | 1957 | 1957 |
| Edith Maud Pitt | October 1959 | July 1962 |
| Peter Richard Legh, Baron Newton | 1962 | April 1964 |
| Charles William Loughlin | February 1965 | June 1967 |