Mary Shepherd was a former consultant thoracic surgeon at Harefield Hospital, Middlesex. She was born at Forest Hill, London, on 4 July 1933, the youngest of the two children of George Raymond Shepherd, an electrical and mechanical engineer, and Florence May Savile, whose father and grandfather had

John Gibbons was born in Moseley, Warwickshire, on 26 November 1926. His father, Leonard Norman Gibbons, who had been severely gassed in the trenches during the First World War, later became legal adviser to the Birmingham Gas Board. His mother was Gladys Elizabeth née Smith, a secretary. John was e