Her other films include Pete Walker's The Flesh and Blood Show, The House That Vanished (AKA Scream and Die) directed by Jose Larraz, Crucible of Terror, Confessions of a Window Cleaner, and Percy's Progress.
[2] Matheson's television work includes City '68, Spindoe, Coronation Street, Z Cars (twice, leading female), Crossroads, (Hugh Mortimer's secretary and Sandy's girlfriend), Harriet's Back in Town, The Adventurer, Dead of Night, The Professionals, The Sweeney, Shelley (BBC film of the poet, opposite Robert Powell and directed by Alan Bridges), Blake's 7, and Citizen Smith.
[3] Matheson's theatre work includes starring opposite Richard O'Sullivan in a British tour of the comedy Boeing-Boeing with Yootha Joyce, Sally Thomsett and Doug Fisher, Ray Cooney's Chase Me Comrade, Stage Struck by Simon Gray, Hugh and Margaret Williams’ The Flip Side, Funny Peculiar by Mike Stott, and Alan Ayckbourn's Bedroom Farce.
She has returned to the big screen for a cameo in the feature film The Haunting of Margam Castle, starring Derren Nesbitt, Jane Merrow, and Caroline Munro, directed by Andrew Jones for North Bank Entertainment, due for release[citation needed][4] in 2020.
Produced by The Misty Moon Film Society, the cast included Felicity Dean, Suzanne Maddock, Graham Cole OBE and David Barry.
Also in October 2021 Matheson took part in a live public reading of George Bernard Shaw’s Pygmalion at The Actors Church in Covent Garden, London, produced by Paul Burton Productions in aid of the charity Acting For Others.
The cast included David Barry, Matheson, Felicity Dean, Graham Cole, Suzanne Maddock, and Larry Dann, and it was produced by The Misty Moon Film Society.
In September 2024, a new BluRay of Crucible of Terror was released by Vinegar Syndrome as part of the box set Cruel Britannia, for which Matheson recorded an interview, for one of the extras.