| Arthur Augustus William Harry Ponsonby | 1929 | 1929 |
| William Lunn | 1929 | 1931 |
| Rt Hon Edward Montagu Cavendish Stanley, Baron Stanley | 1935 | 1935 |
| Edward William Spencer Cavendish, Marquess of Hartington | 1936 | 1940 |
| Herbert John Harvey Parker | August 1945 | May 1946 |
| Arthur George Bottomley | 1946 | 1947 |