Evan Sherrah-Davies, who was to make his career in radiotherapy, was born on 8 October 1922 in Rossendale, Lancashire. He was the son of the local general practitioner, also called Evan, who proudly kept a meticulous record of Evan's achievements, and his wife Amelia, née Oakley. After a series of prizes at Charterhouse School he went up to Christ's College Cambridge as an exhibitioner, and from there with a scholarship to Westminster Hospital Medical School. He qualified MB Cambridge in 1947. After his house jobs he joined the RAF, where he gained considerable surgical experience. He then returned to Westminster as registrar to Sir Stanford Cade and took the FRCS in 1952, but his interests were already turning to radiotherapy. Five years' training at the London Hospital led to a consultant post as radiotherapist at the Christie Hospital and Holt Radium Institute in Manchester in 1958. There he gave 27 years of distinguished service, contributing to the literature on the subject of lung cancer and other malignancies. He married first on 5 June 1952 Yvonne Idenburg, by whom he had one daughter, Lynne. This marriage ended in divorce in 1962 and in the following year he married Christina Hancock, a radiographer. By her he had another daughter, Helen, and a son, Vaughan, but none of the children entered the medical profession. He retired in 1985 and died on 6 January 1991.