Boucher had intended to write all ten scripts for the series himself but the tight timescale under which the episodes had to be recorded meant he could only contribute five, with the rest written by John Collee (three scripts) and Philip Martin (two scripts). Having previously qualified and worked as a doctor, Collee was a journalist who wrote for "The Observer" newspaper and later moved into films, most notably writing the screenplay for "". Martin was an experienced scriptwriter, best known for the controversial BBC drama series "Gangsters", with previous experience in television science fiction, having written for "Doctor Who". Two directors were assigned to the show: Christopher Baker, who had worked with Gridneff before on "Hold the Back Page" as well as BBC veterinarian dramas "All Creatures Great and Small" and "One by One", and Graeme Harper who had directed two "Doctor Who" stories.