1928-1944 Lancelot C. Bullock
1945-1951 William L. Bevington
1952-1954 Christopher B. Lynn
1955 Charles A. Ireland
1956-1965 Alec W. Snook
1966-1967 Berthil W. Gregory
1968-1969 Tony Longman
1970-1974 Bill Murdoch
1975-1985 Denis Jacobs
1986-1987 John Withers
1988-1995 Denis Jacobs
1996-1998 John Dowling
1999-2002 Mark Barrow
2003-2010 Peter Ruddy