Blake ' s 7 Blake ' s 7 was a human television show of which the First Doctor was not fond . ( PROSE : " A Big Hand for the Doctor " ) Tegan Jovanka mentioned the series once , saying that she understood the concept of transmat s — or in " Blake ' s 7 " terms , teleportation — having seen it on the show . ( PROSE : " Cold Fusion " ) " Blake ' s 7 " was the favourite television series of Gavin Oliver Scott . In 2600 , Bernice Summerfield obtained two episodes of the series for him on VHS . She noted that Roj Blake seemed to exist both as a fictional character and as a real person , " which can ' t be right . " ( PROSE : " The Least Important Man " ) She also had mentioned knowing someone who was in Blake ' s 7 , which she quickly qualified with " the terrorist group , not the TV show . " ( PROSE : " Death and Diplomacy " ) Behind the scenes . " Blake ' s 7 " was a science fiction series produced by the British Broadcasting Corporation at BBC Television Centre from 1978 to 1981 . Since they were produced essentially " next door " to each other , it and " Doctor Who " shared many cast and crew members . Perhaps the most notable connection is that it was created and often written by Terry Nation . Important shared cast members included Paul Darrow , Gareth Thomas , Michael Keating , Jacqueline Pearce and Colin Baker . Nearly every director on the show had also directed " Doctor Who " , and its writing staff included " Doctor Who " luminaries like Robert Holmes and Chris Boucher . David Maloney produced the series and Dudley Simpson exclusively scored it . Most of the other departments also had significant connections to " Doctor Who " , as well . Ken Ledsham and Roger Murray - Leach were amongst its production designer s . Costume designer s included Barbara Kidd and June Hudson . Sheelagh Wells was a make - up designer , while Peter Chapman was a major force in the camera department , and Brian Clemett was the main person providing studio lighting . In other words , " Blake ' s 7 " looks and feels very much like " Doctor Who " of the late 1970s , almost to the extent that one could believe the two series are set in different parts of the same universe . Consequently , British fans of the original version of " Doctor Who " tend to also like " Blake ' s 7 " . However , North America n fans of a similar age may not share this affinity to quite the same relative degree , because " Blake ' s 7 " was not widely broadcast there . Worse , " Blake ' s 7 " has not , , received a Region 1 DVD release . On both sides of the Atlantic , most fans brought into " Doctor Who " by the BBC Wales version have no special affinity for " Blake ' s 7 " , if they even know what it is . In - universe crossovers . Occasional nods to " Blake ' s 7 " have appeared in DWU fiction , though none of it has been televised . This is mostly down to Chris Boucher , since he had significant runs on both shows . His novel " Corpse Marker " , a sequel to TV : " The Robots of Death " , features the psychostrategist Carnell , a character who had first appeared in the " Blake ' s 7 " episode " Weapon " . The novel indicates that he settled on Kaldor two years after he first went on the run from the Federation , which would have followed his failure in " Weapon " . The character appeared again in the Kaldor City series of audio stories . Many fans of the series have postulated that Iago , as played by Paul Darrow , the main protagonist in the series , is in fact Kerr Avon going for his own reasons under an assumed name . Magic Bullet Productions have neither confirmed nor denied this . Most significantly , in AUDIO : " Metafiction " , Iago describes his life before he arrived on Kaldor , in doing so he makes many references to plot elements that mirror those experienced by Avon as featured in " Blake ' s 7 " . If taken a face value , these references could be taken as positive confirmation that Iago is in fact Avon . However the nature of the play , as suggested by its title , implies that all may not be what it seems . Proposed crossovers . A crossover between the two series was proposed at least twice . The last episode of Season B of " Blake ' s 7 " featured an invasion of the galaxy by aliens , called Andromedans , from outside the Galaxy . The aliens were so powerful that the crew of the " Liberator " pitched in with the Federation to fight them off . Terry Nation had wanted to feature the Dalek s as the invading force . However , as Chris Boucher recalls , the idea was strongly rejected by the producer and Boucher himself . Tom Baker and Gareth Thomas , who played Blake , thought it would be amusing for the Doctor and Blake to meet for a few seconds in a corridor on either " Doctor Who " or " Blake ' s 7 " , but this idea was , again , overruled .