Susan Engel played Cessair of Diplos in the Doctor Who television story The Stones of Blood. She also played Ms Muriel Joy in Big Finish Productions' Gallifrey audio series story A Blind Eye. In 2011, she read the AudioGO story The Stones of Blood.
Engel's other credits included roles on Public Eye, Crown Court, Moody and Pegg, Inspector Morse and Casualty. However, she is best known for playing Helen Bourne in twenty eight episodes of The Cedar Tree.