Eileen Busby was an associate specialist at the Royal Marsden Hospital, London. Born in Clapton, London, on 5 December 1930, she was the daughter of William Francis Busby, a house painter and decorator, and Rose Harriet née Stephenson, a dressmaker. Eileen was educated at various schools during the Second World War, before entering Tiffin Girls' School, Kingston-upon-Thames, where she excelled, ending as head girl. She then went on to Bedford College, London, to read zoology and botany, and did her medical education at Charing Cross Hospital. There she gained prizes in anatomy, physiology, pathology, surgery, orthopaedics and applied pharmacology and therapeutics. She qualified with the Llewellyn certificate of merit. After serving as a house physician, house surgeon and casualty officer, she became an anatomy demonstrator and a research assistant in physiology at Charing Cross. In 1957 she went to the Royal National Orthopaedic Hospital as a senior house officer for a year. For the next three years she held posts at Ealing, Bromley, East Ham Memorial and St George's hospitals. In 1964 she began her training in radiotherapy as a registrar at the Royal Marsden Hospital, becoming a senior registrar in 1967 and finally a medical assistant and associate specialist in 1969, a post which she retained until 1994. She published extensively on experimental carcinogenesis in the mouse bladder, and on tumours of the head and neck. Eileen never married. Her many outside interests included knitting, needlework, music and gardening.