Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Halloween III: El día de la bruja | 1982 | |
| Writer | La mujer de negro | 1989 | |
| Actor | Nineteen Eighty-Four | 1954 | |
| Writer | Nineteen Eighty-Four | 1954 | |
| Writer | ¿Qué sucedió entonces? | 1967 | |
| Writer | ¿Qué sucedió entonces? | 1967 | |
| Writer | El experimento del Dr. Quatermass | 1955 | |
| Writer | The Quatermass Experiment | 2005 | |
| Writer | Las brujas | 1966 | |
| Writer | La gran sorpresa | 1964 | |
| Writer | El abominable hombre de las nieves | 1957 | |
| Writer | El abominable hombre de las nieves | 1957 | |
| Writer | El experimento del doctor Quatermass II | 1957 | |
| Writer | El experimento del doctor Quatermass II | 1957 | |
| Writer | Sharpe's Gold | 1995 | |
| Writer | Mirando hacia atrás con ira | 1959 |