First Principals |
| 1957 | G H Robertson | 1958 | T V Fitzpatrick | 1959 | E R Dale |
| 1960 | D G Stotter | 1961 | A J Little | 1962 | J P Glennie |
| 1963 | H N Granville | 1964 | T G Messer | 1965 | H A L Turner |
| 1966 | E F Reeves | 1967 | H M Speakman | 1968 | I R Parsons |
| 1969 | D N Chalmers | 1970 | G O Sims | 1971 | I F E Wilson |
| 1972 | R L King | 1973 | G Hawley | 1974 | J W Proudfoot |
| 1975 | A M Beale | 1976 | J L B Stevens | 1977 | D J Alison |
| 1978 | C Johansen | 1979 | S A Caldwell | 1980 | F J G Rice |
| 1981 | N G Davies | 1982 | A McClew | 1983 | J H H Vivian |
| 1984 | E Williamson | 1985 | T A Brooke | 1986 | P B Curran |
| 1987 | W B Malcolm | 1988 | W B Malcolm | 1989 | R J Holbrook |
| 1990 | M D Reid | 1991 | M D Reid | 1992 | F J G Rice |
| 1993 | B J Stevens | 1994 | L A Monroe | 1995 | S R Marshall |
| 1996 | J M Wilson | 1997 | D B Waters | 1998 | I J McCallum |
| 1999 | B J Stevens | 2000 | S R Marshall | 2001 | J N Yeo |
| 2002 | J L Mansfield | 2003 | W McDougall | 2004 | D G S Dormer |
| 2005 | G W Ragg | 2006 | J E Morton | 2007 | I G Shaw |
| 2008 | I G Shaw | 2009 | G Marr | 2010 | G W Ragg |
| 2011 | D M Waller | 2012 | D M Waller | 2013 | S R Marshall |
| 2014 | S R Marshall | 2015 | J L Mansfield | 2016 | N Foster |
| 2017 | R G Burgess | 2018-20 | M F Hall | 2021-23 | P G Sargison |