[1945 to 1950] - CAMPBELL, Neil

[1950 to 1956] - TOWNLEY, Reginald Colin

[1956 to 1960] - JACKSON, William

[1960 to 1972] - BETHUNE, Sir Walter Angus

[1972 to 1979] - BINGHAM, Eardley Max

[1979 to 1981] - PEARSALL, Geoffrey Alan

[1981 to 1991] - GRAY, Robin Trevor

[1991 to 1996] - GROOM, Raymond John

[1996 to 1999] - RUNDLE, Anthony Maxwell

[1999 to 2001] - NAPIER, Suzanne Deidre

[2001 to 2002] - CHEEK, Robert Reginald

[2002 to 2006] - HIDDING, Marinus Theodoor

[2006 to 2020] - HODGMAN, William Edward Felix

[2020 to 2022] - GUTWEIN, Peter Carl

[2022 to date] - Rockliff, Jeremy Page