Peter Riddle was a well-known urologist who worked all his consultant life in London. He was emeritus surgeon at University College London and at St Peter's Hospital, and had been sub-dean at the Institute of Urology. He was born on 1 September 1933. His father, Leonard, was an assurance broker and

Ivor Alwyne Sewell studied medicine at King's College Hospital, qualifying MB BS in 1955. A lecturer in surgery at Westminster Hospital Medical School at the start of his career, he then became senior registrar in surgery at Glasgow Royal Infirmary. He was awarded a PhD for research into the microci