45 credits
- The Quatermass Experiment
2005 Screenplay
- Sharpe's Gold
1995 Screenplay
- The Woman in Black
1989 Screenplay
- Gentry
1987 Writer
- Ladies' Night
1986 Writer
- Halloween III: Season of the Witch
1982 Screenplay
- Kinvig (TV pilot)
1981 Writer
- The Quatermass Conclusion
1979 Writer
- Als Hitler das rosa Kaninchen stahl
1978 Writer
- Beasts: Buddyboy
1976 Writer
- Beasts: What Big Eyes
1976 Writer
- Beasts: The Dummy
1976 Writer
- Beasts: Special Offer
1976 Writer
- Beasts: During Barty's Party
1976 Writer
- Beasts: Baby
1976 Writer
- Murrain
1975 Writer
- The Stone Tape
1972 Writer
- The Chopper
1971 Writer
- Wine of India
1970 Writer
- Bam! Pow! Zap!
1969 Writer
- The Year of the Sex Olympics
1968 Writer
- Quatermass and the Pit
1967 Screenplay
- The Quatermass Experiment
1967 Novel
- The Witches
1966 Writer
- The World of George Orwell: 1984
1965 Writer
- First Men in the Moon
1964 Screenplay
- The Road
1964 Writer
- The Crunch
1964 Writer
- The Road
1963 Writer
- H.M.S. Defiant
1962 Screenplay
- Wuthering Heights
1962 Writer
- The Entertainer
1960 Screenplay
- Look Back in Anger
1959 Screenplay
- The Littlest Enemy
1958 Story
- Quatermass 2
1957 Screenplay
- The Abominable Snowman
1957 Story
- Mrs. Wickens in the Fall
1957 Writer
- The Quatermass Xperiment
1955 Teleplay
- The Creature
1955 Writer
- The Moment of Truth
1955 Writer
- Nineteen Eighty-Four
1954 Writer
- Wuthering Heights
1953 Adaptation
- Number Three
1953 Writer
- Golden Rain
1953 Adaptation
- The Affair at Assino
1953 Adaptation
