Philip Chalk was a consultant obstetrician and gynaecologist at the Royal Free Hospital, London. He was born on 1 May 1930 in Southend, Essex, the son of Charles Philip Chalk and Ann Chalk née Forbes; both his parents were teachers. He was educated at Newport Free Grammar School, Essex. He carried o

Sir John Chalstrey was a consultant surgeon and senior lecturer at St Bartholomew’s Hospital. He specialised in oesophageal and gastric cancer surgery, was an early adopter of minimally invasive surgery when it was introduced in the 1980s, and a founder member of the Society of Minimally Invasive Ge