Sir Theodore "Robbie" Fortescue Fox was a British physician and medical editor. After graduating from Leighton Park School in 1918, Theodore Fox, as a Quaker, joined the Friends' Ambulance Unit and served in France for eight months. With the benefit of a scholarship, he matriculated in 1919 at Pembroke College, Cambridge. After education at the University Cambridge and medical training at the London Hospital, he qualified MRCS, LRCS in 1924. At the London Hospital he was house physician to Sir Robert Hutchison. After a round trip to India as a ship's surgeon, Fox undertook in 1925 locum work at the editorial office of The Lancet. He graduated in 1926 BChir, in 1937 MB, and in 1938 MD from the University of Cambridge. Fox continued his editorial work at The Lancet until the start of WWII. He served for three years in the RAMC. During WWII he was a regimental medical officer in France before he was evacuated from Cherbourg. He then worked in the RAMC's Army Blood Transfusion Service before he joined the War Office to edit the Army Medical Department Bulletin. At the request of The Lancets editor-in-chief Egbert Morland, the RAMC released Fox to return to editorial work at The Lancets wartime office in Aylesbury. In 1944 Morland retired and Fox became The Lancets editor-in-chief. Fox was elected FRCP in 1946. He was heavily involved in the discussions and controversies concerning the establishment of the National Health Service. Fox was in 1951 the Croonian Lecturer. He gave in 1963 the Heath Clark lectures, which were published as Crisis in Communication. In 1965 he delivered the Harveian Oration on Purposes of Medicine. In 1966 he gave the Maurice Bloch lecture at the University of Glasgow. He was a prolific letter writer and sent his famous hand-painted Christmas cards to his friends. He was knighted in 1962. In 1930 he married Margaret Evelyn McDougall. They had four sons. Robin Fox, their youngest son, was editor of The Lancet from 1990 to 1995. T. Fortescue Fox's father was Robert Fortescue Fox, MD, FRCP, a pioneer of physical therapy.