Sarah Sutton is a British actress best known for her role as Nyssa in the BBC science fiction television series Doctor Who. Nyssa was a companion of Tom Baker and Peter Davison's Doctors from 1981 to 1983. She was the youngest female actor to play a companion in the series.
Sutton was born in Basingstoke, Hampshire, England. She studied ballet as a little girl and went on as an actress to be the youngest British actress to have played Alice in a television or sound film production of Alice in Wonderland, Natalie Gregory being the youngest actress to have played Alice in an American television or sound film.
Since leaving Doctor Who she has done very little acting, instead focusing on raising her daughter, Hannah, with her GP husband. She has made appearances as Sarah Dryden in the BBC's medical soap opera Casualty (the 1989 episode "Charity"), and as Wendy in the serial Unnatural Pursuits (1991, written by Simon Gray and starring Alan Bates).
Sutton reprised the role of Nyssa in 1993, in the Doctor Who Children in Need special Dimensions in Time, and subsequently in several of the Big Finish Productions Doctor Who spin-off audio plays from 1999 onwards.