At the time, most British television drama was shot on a combination of film and videotape. Usually location shooting would be on film and studio work would be recorded on video. The effect of the change in medium from film to video (or vice versa) during a scene change in a programme could be jarring for some viewers. Boucher structured his scripts carefully so that all the Earth-based scenes would be shot on film on location and all the space scenes would be recorded on video in the studio hoping that the effect would give the space scenes a unique look. He was disappointed, therefore, to discover that Gridneff had decided to record the entire series on videotape.