Once the nation's favourite, by its third year Doctor Who was in trouble. With changes afoot in the production office and increasing problems with its lead actor, the programme was heading for the Last Chance Saloon.

Cast and crew look back at the making of The Stones of Blood.

With new interviews with the actors and production team, this documentary reveals the inspiration for stories, outlines how the team knew they were upsetting the government and big business, and explains why Robert Powell left at the height of its popularity.

A look at the late-80s BBC series Star Cops, which followed the adventures of the International Space Police Force in the year 2027.

A short documentary about the 1980's Sci-fi show, The Tripods, that didn't really have that many Tripods in it. It took producer Richard Bates 15 years to get John Christopher's trilogy The Tripods on to our screens, and even then it was never finished.