| Rt Hon Dr Christopher Addison | 1929 | June 1930 |
| Thomas Williams | 1940 | 1945 |
| Rt Hon Sir Bernard Marmaduke Fitzalan-Howard, Duke of Norfolk | February 1941 | July 1945 |
| Robert Donald Scott | May 1945 | July 1945 |
| Joseph Bradshaw Godber | 1957 | 1960 |
| William Morgan Fletcher Vane | 1960 | 1962 |
| Rowland Denys Guy Winn, Baron St Oswald | 1962 | 1964 |