- You may be looking for the designer of The Tomb of the Cybermen.
Martin Johnson composed music and sound design for Big Finish Productions.
Post production
Big Finish Monthly Doctor Who audio stories
- Assassin in the Limelight - music & sound design
- The Doomwood Curse - music & sound design
Big Finish Eighth Doctor Who audio stories
- Hothouse - music & sound design
- The Scapegoat - music & sound design
- The Eight Truths - music & sound design
- Worldwide Web - music & sound design
- The Book of Kells - music & sound design