Geoffrey Chamberlain was professor and chairman of the department of obstetrics and gynaecology at St George's Hospital Medical School. He was born in Hove, Sussex, on 21 April 1930, the son of Albert Victor Chamberlain, secretary to the Lord Mayor of Cardiff, and Irene May Chamberlain née Price. He was educated at Llandaff Cathedral School and Cowbridge Grammar School. He then studied medicine at University College London. He held training posts at the Royal Postgraduate Medical School, Great Ormond Street Hospital for Children, Queen Charlotte's and Chelsea Hospital for Women, and King's College Hospital, London. He was then a tutor at George Washington Hospital, Washington DC, USA, from 1965 to 1966. From 1970 to 1982, he was a consultant at Queen Charlotte's and Chelsea Hospital. From 1982 to 1995 he was professor of obstetrics and gynaecology at St George's Hospital Medical School. From 1955 to 1974, he was in the Royal Naval Volunteer Reserve (later the Royal Naval Reserve), ending his service as a surgeon commander. He was president of the section of obstetrics and gynaecology at the Royal Society of Medicine in 1989. At the Royal College of Obstetricians and Gynaecologists he was a member of the council from 1971 to 1994, vice president from 1984 to 1987 and president from 1993 to 1994. In 1994 Malcolm Pearce wrote a case report in the *British Journal of Obstetrics and Gynaecology* describing the successful transfer of an ectopic foetus into the uterine cavity. The report was later shown to be fraudulent. Chamberlain, Pearce's head of department, although not involved, had co-signed his original report. Chamberlain was forced to resign as editor-in-chief of the *British Journal of Obstetrics and Gynaecology* and as president of the Royal College of Obstetricians and Gynaecologists. From 2000 to 2008 he was Apothecaries' lecturer in history of medicine at Swansea University. Outside medicine he enjoyed opera, travel and carving wooden decoy ducks. In 1956 he married Jocelyn Olivia Kerley. They had five children. Geoffrey Chamberlain died in October 2014. He was 84.