1770-82    Lord North
1782         Lord Rockingham
1782-83    Lord Shelburne
1783         Duke of Portland
1783-01    William Pitt
1801-04    Henry Addington
1804-06    William Pitt
1806-07    Lord Grenville
1807-09    Duke of Portland
1809-12    Spencer Perceval
1812-27    Lord Liverpool