Writing credits:
* Doctor Who: The War Games (1969) (co-writer with Malcolm Hulke)
* Doctor Who: Spearhead from Space (1970) (co-writer with Robert Holmes)
* Doctor Who: The Time Monster (1972) (co-writer with Robert Sloman)
Producing credits:
Doctor Who serials
* The War Games (1969)
* Spearhead from Space (1970)
* The Silurians (1970)
* The Ambassadors of Death (1970)
* Inferno (1970)
* Terror of the Autons (1971)
* The Mind of Evil (1971)
* The Claws of Axos (1971)
* Colony in Space (1971)
* The Dæmons (1971)
* The Sea Devils (1972)
* The Mutants (1972)
* The Time Monster (1972)
* The Three Doctors (1972–73)
* The Green Death (1973)
* The Time Warrior (1973–74)
* Invasion of the Dinosaurs (1974)
* Death to the Daleks (1974)
* The Monster of Peladon (1974)
* Planet of the Spiders (1974–75)
* The Android Invasion (1975)
* Pyramids of Mars (1975)
Other television productions
* The Adventures of Don Quick (1970)
* The Venturers (1970–71)
* The Last of the Mohicans (1971)
* The Regiment (1972–73)
* Out (1978)
* The Martian Chronicles (1980)
* Gulliver in Lilliput (1982)
* Sherlock Holmes (1984–85)
* The New Adventures of Robin Hood (1997–98)