Political satire, comic strip action adventure, science fiction, space opera, Orwellian dystopia, costume drama, Western...Drawing on a range of genres, Terry Nation's Blake's 7 resists categorisation or labelling; a ground-breaking piece of television drama. Presenting itself as easy-viewing, early evening entertainment for a (largely) teenage audience - which, on one level, it was - it tackles state-surveillance, propaganda, corruption, genocide, revolution, and terrorism. Avengers expert Rodney Marshall turns his attention to Blake's 7, offering unauthorised, entertaining,...