Born in South Africa in 1937, John trained in epidemiology at the School of Hygiene and Tropical Medicine, London, where he worked on Salmonella poisoning.
In 1973 was awarded MD from Wits and in 2005 was elected FRCP. He served as a consultant physician in the Kingston, Richmond and Hereford area health services. After his retirement he enjoyed tennis, bridge and traveling, especially visiting family in South Africa. He died in Hereford on 3 November, 2014, age 77.
Obituary. Wits Review, March 2015.