David Richard John qualified MB BS in 1955 having studied at the Charing Cross Hospital Medical School, and gained his Fellowship in 1963. After junior posts at St Peter's Hospital and the Institute of Urology he became a surgical registrar at the Charing Cross and Royal Masonic Hospitals, before becoming consultant urologist at the Hillingdon, Harefield and Watford General Hospitals, remaining in these posts until his retirement in 1995. He died on 15 July 1996, survived by his wife Mary and his children Elizabeth, Nicholas and Kathryn.