George Northcroft was born on 17 June 1911 in Harley Street, London, at the house of his father, a well-known orthodontist. His medical education was at St John's College, Cambridge, and the London Hospital, where he qualified in 1937. He began his career in neurosurgery with an appointment at th

Jack Crawford was born on 19 November 1917 and received his education at Brentwood School and the London Hospital Medical College. After graduation he obtained a post in the clinical laboratory before his house appointments at the London. In September 1939 he became house surgeon to Douglas Northfie