Writing

1986		Doctor Who: The Ultimate Foe … Writer
1986		Doctor Who: The Mysterious Planet … Writer

1985

… Writer

1984

… Writer

1981

… Writer

1979

… Writer

1978

… Writer

1977		Doctor Who: The Sun Makers … Script Editor … Writer
1977		Doctor Who: Image of the Fendahl … Script Editor
1977		Doctor Who: The Invisible Enemy … Script Editor
1977		Doctor Who: Horror of Fang Rock … Script Editor
1977		Doctor Who: The Talons of Weng-Chiang … Writer … Script Editor
1977		Doctor Who: The Robots of Death … Script Editor
1977		Doctor Who: The Face of Evil … Script Editor

1976		Doctor Who: The Deadly Assassin … Script Editor … Writer
1976		Doctor Who: The Hand of Fear … Script Editor
1976		Doctor Who: The Masque of Mandragora … Script Editor
1976		Doctor Who: The Seeds of Doom … Script Editor
1976		Doctor Who: The Brain of Morbius … Script Editor … Writer

1975		Doctor Who: Pyramids of Mars … Writer … Script Editor
1975		Doctor Who: Planet of Evil … Script Editor
1975		Doctor Who: Terror of the Zygons … Script Editor
1975		Doctor Who: Revenge of the Cybermen … Script Editor … Writer
1975		Doctor Who: Genesis of the Daleks … Script Editor
1975		Doctor Who: The Sontaran Experiment … Script Editor
1975		Doctor Who: The Ark in Space … Script Editor … Writer
1975		Doctor Who: Robot … Script Editor

1974		Doctor Who: Invasion of the Dinosaurs … Script Editor
1974		Doctor Who: The Time Warrior … Writer

1973

… Writer

1971

… Writer

1970

… Writer

1969		Doctor Who: The Space Pirates … Writer
1969		Doctor Who: The Krotons … Writer

1965

… Story

Acting

2006

as (archival footage)

1977

Visual Effects

2001

… Creature Design