I don't know if you've ever tried writing a Doctor Who story, but it's a lot more difficult than it initially appears, especially if you've got more than one assistant.

Sarah Sutton (born 12 December 1961) is a British actress best known for her role as Nyssa in the BBC science fiction television series Doctor Who. Sutton was born in Basingstoke Hampshire England.

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. Sutton was born in Basingstoke Hampshire England. She has made appearances as Sarah Dryden in the BBC's medical drama series Casualty (the 1989 episode "Charity") and as Wendy in the serial Unnatural Pursuits (1991 written by Simon Gray and starring Alan Bates).