After joining the Fourth Doctor in 1981 in the story The Keeper of Traken, her final full Doctor Who serial was with the Fifth Doctor, in 1983's Terminus.
Sutton took a break from acting after Doctor Who, focusing for a number of years on raising her daughter, Hannah, with her GP husband, Mike. She made a brief appearance in Peter Davison's final Doctor Who serial, The Caves of Androzani (1984), played Sarah Dryden in a 1989 episode of the BBC medical drama series Casualty and Wendy in a 1992 episode of Unnatural Pursuits.
Sutton reprised the role of Nyssa in the 1993 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. In November 2013 she appeared in the one-off 50th anniversary comedy homage The Five(ish) Doctors Reboot.
Sutton also appeared in several episodes of MJTV's original audio sci-fi CD series 'Soldiers of Love' as Colonel Franklyn. She also played Sharon in the Take 1 Productions educational video drama 'TravelWise' (2000)