G.Shambrook 1961 – 66

H.R. Jack 1967 – 77

M.H Walker 1978 – 84

B. Oberman 1985 – 96

E. Westlake 1997 – 98

J. Norton 1999 – 2009

R. Macleod 2010 – 2013

N. Steinhardt 2014 –