| T G Goddard (CJ) | 1991-2005 | G L Colgan (CJ from 2005) | 1991-to date |
| D S Castle | 1991-1995 | C M Shaw | 1999-2009 |
| D D Finnigan | 1991-1998 | A A Couch | 2005-to date |
| B S Travis | 1991-to date | M E Perkins | 2006-2007 |
| B A Palmer | 1991-2003 |
| J R P Horn (CJ) | 1987-1989 1991 | B O Nicholson | 1988-1989 |
| N P Williamson | 1987-1988 | T G Goddard (CJ from Sept 1989) | 1989-1991 |
| D S Castle | 1987-1991 | B S Travis | 1989-1991 |
| D D Finnigan | 1987-1991 | G L Colgan | 1989-1991 |
| B A Palmer | 1987-1991 |
| R D Jamieson (CJ) | 1978-1979 | D S Castle | 1980-1987 |
| J R P Horn (CJ from 1979) | 1978-1987 | D D Finnigan | 1985-1987 |
| N P Williamson | 1978-1987 | P F Barber | 1983-1984 1986-1987 |
| R D Jamieson (temp) | 1980 | B O Nicholson | 1984-1986 |
| J S Williams | 1896-1897 | P J O'Regan | 1937-1940 |
| J E Denniston | 1898 | W H Hunter | 1937-1939 |
| W B Edwards | 1898-1900 | J B Callan (temp) | 1939 |
| J C Martin | 1900-1901 | A Tyndall | 1940-1965 |
| T Cooper | 1901-1903 | D J Dalglish | 1947-1952 |
| F R Chapman | 1903-1906 | O G Stevens | 1947-1952 |
| W A Sim | 1907-1913 | W F Stilwell | 1947-1949 |
| T W Stringer | 1914-1920 | K G Archer (temp) | 1964 |
| F V Frazer | 1921-1935 | A P Blair | 1964-1973 |
| E Page | 1935-1937 | J B Thompson | 1967-1972 |