Spent twenty years as chief executive of Cambridge University Press and has also been chairman of the Royal Shakespeare Company and president of the Lawn Tennis Association.
Formerly, Sir Geoffrey was also a member of the Cambridge University Fitzwilliam Museum Syndicate; a member of the University Careers Service Syndicate (The Appointments Board); chairman of the governors of The Perse School for Girls, Cambridge 1978-88; president, Macmillan Cancer Support, Cambridgeshire (1998-).
He is the chairman and co-founder of the Royal Theatrical Support Trust (2012-) and a vice patron of the Almshouse Association (2018-).
Sir Geoffrey was a lawn tennis Blue at Oxford University (1953/54/55) and Captain of Badminton (1951/52).
He went on to play in the Inter-County Lawn Tennis Championships over a period of 31 years and was Captain (1974–78) and President (1980-82) of Cambridgeshire Lawn Tennis Association, having also earlier represented the RAF in the Inter-Services Championships at Wimbledon 1958/59.