Diamond was born in London on 17 December 1936. She was the younger of the two daughters of George Diamond, a Polish Jew, and his wife Rosemary (née Reed) of Irish extraction. Gillian Diamond, her sister, was a casting director. She attended
RADA, graduating in 1956. She appeared in a number of films, including
80,000 Suspects (1963),
Subterfuge (1968), and
Goodbye Gemini (1970). On television she appeared in such series as
Dixon of Dock Green,
Danger Man,
Brookside and
The Armando Iannucci Shows. She also played in the drama
Madame Bovary (2000), which was broadcast in two parts on 6 and 13 February in the United States on
WGBH-TV, and on 10 and 11 April in the United Kingdom on
BBC Two. Diamond died at
University College Hospital in London, on 5 January 2026, aged 89. ==Filmography==