Blake's 7 is a British science fiction television series produced by the BBC for broadcast on BBC1. Four 13-episode series of Blake's 7 were broadcast between 1978 and 1981. It was created by Terry Nation, who also created the Daleks for Doctor Who. The script editor was Chris Boucher. The series was inspired by a range of fictional media including Passage to Marseilles, The Dirty Dozen, Robin Hood, Brave New World, Star Trek, classic Westerns and real-world political conflicts in South America and Israel. Wikipedia.