She also voiced Noddy in Noddy's Toyland Adventures, Princess Sylvia in Muzzy in Gondoland, and Princess Eilonwy in the animated film The Black Cauldron.
She died on 8 August 2015, from breast cancer, aged 68.
Douglas Adams said of Sheridan "Susan never found anything major to do with the role, but that wasn't her fault, it was my fault".
The Hexagonal Phase, which was made after her death, was dedicated to her.
- Fit the Twenty-Seventh (using the voice recordings from the previous Phase. In future episodes Trillian was played by Sandra Dickinson.)
- Susan Sheridan on Wikipedia
- Susan Sheridan on IMDB