Trivia: Production was suspended for over a month whilst Charlize Theron recovered from a neck injury she suffered doing stunt work on the tenth day of shooting. She was in hospital for five days and needed about six weeks of physiotherapy to recover.
Trivia: In this live BBC remake of the 1955 film, Jason Flemyng starred as Bernard Quatermass, and David Tennant starred as Gordon Briscoe. During rehearsals, the cast and crew learned that Tennant had been selected for the coveted role of the upcoming Tenth Doctor Who (the public would not learn of Tennant's official Doctor Who selection until weeks after the Quatermass broadcast). During the live television performance of "The Quatermass Experiment," when Jason Flemyng and David Tennant first share dialogue, Flemyng was supposed to deliver the scripted greeting: "Good to have you back, Gordon!" However, Flemyng ad-libbed: "Good to have you back, Doctor!" This was a deliberate inside-congratulation to David Tennant for winning the Doctor Who role.
Trivia: Due to the potential dangers of filming in a real cave the entirety of the film was shot on sets. Twenty one "caves" were built for the shoot.