1919-1930    The Right Hon. The Earl of Balfour, FRS
1930-1932    Professor RC Punnett, FRS
1932-1936    Professor JBS Haldane, FRS
1936-1938    Miss ER Saunders
1938-1940    Professor FAE Crew, FRS
1940-1943    Professor Sir Ronald Fisher, FRS
1943-1946    Professor CD Darlington, FRS
1946-1949    Professor EB Ford, FRS
1949-1952    Professor Sir Kenneth Mather, FRS
1952-1955    Professor SC Harland, FRS
1955-1958    Professor LS Penrose, FRS
1958-1961    Professor CH Waddington, FRS
1961-1964    Professor DG Catcheside, FRS
1964-1966    Professor G Pontecorvo, FRS
1966-1968    Professor Charlotte Auerbach, FRS
1968-1971    Professor D Lewis, FRS
1971-1973    Professor W Hayes, FRS
1973-1975    Professor R Riley, FRS
1975-1978    Professor JM Thoday, FRS
1978-1981    Professor JRS Fincham, FRS
1981-1984    Professor J Jinks, FRS
1984-1987    Professor Sir DA Hopwood, FRS
1987-1990    Professor NE Murray, FRS
1990-1994    Professor PM Nurse, FRS
1994-1997    Professor DJ Sherratt, FRS
1997-2000    Professor M Ashburner, FRS
2000-2003    Professor L Partridge, FRS
2003-2006    Professor J A Hodgkin, FRS
2006-2009    Professor B Charlesworth, FRS