2021-2024 – Graham Roberts
2018 – 2021 – Adam Fox
2015 – 2018 – Shuaib Nasser
2012 – 2015 – Anthony Frew
2009 – 2012 – Glenis Scadding
2006 – 2009 – Stephen Durham
2002 – 2006 – Andrew Wardlaw
1999 – 2002 – Pamela Ewan
1996 – 1999 – Tak Lee
1993 – 1996 – Barry Kay
1990 – 1993 – Stephen Holgate
1987 – 1990 – R J Davies
1984 – 1987 – J W Kerr
1981 – 1984 – M H Lessof
1978 – 1981 – D G Wraith
1975 – 1978 – M K McAllen
1972 – 1975 – K Citron
1969 -1972 – J Morrison Smith
1966 -1969 – J Pepys
1963 – 1966 – A W Frankland
1963 – 1966 – H Royale
1960 – 1963 – R J S McDowell
1957 – 1960 – D Blair Macaulay
1954 – 1957 – R Bruce Pearson
1951 – 1954 – D A Williams
1948 -1951 – Vera B. Walker