1948 – 1951

Sir Hugh Dow

1951 – 1954

Herbert R.Gybbon Monypenny

1957 – 1959

Andrew C. Stewart

1959 – 1962

James M. Walsh

1962 – 1964

Alastair G. Maitland

1964 – 1967

Hubert N. Pullar

1967 – 1970

John H. Lewen

1970 – 1974

John M.O. Snodgrass

1974 – 1976

Edward E.Key

1976 – 1980

Michael P.V. Hannam

1980 – 1984

Donald A. Hamley

1984 – 1987

Patrick G. de Courcy-Ireland

1987 – 1990

Ivan R. Callan

1990 – 1993

David R. MacLennan

1993 – 1997

Richard J. Dalton

1997 – 2001

Robin A. Kealy

2001 – 2003

Geoffrey Adams

2003 – 2006

Dr John Jenkins

since 2007

Richard Makepeace