BBC1 premieres the 40th episode of Terry Nation’s science fiction series Blake’s 7, the first episode of the series’ fourth season. Due to a last-minute pickup by the BBC, the series has to reboot from this point with a new ship, new sets, costumes, props, and a new direction decided on without significant input from series creator Terry Nation. Jan Chappell provides a voice-over for Cally, who doesn’t appear in person. Glynis Barber is introduced as new series regular Soolin. 
BBC1 premieres the 41st episode of Terry Nation’s science fiction series Blake’s 7, concluding the opening two-episode story of Avon and crew securing a new ship and base for themselves.
BBC1 premieres the 42nd episode of Terry Nation’s science fiction series Blake’s 7. Jacqueline Pearce returns as Servalan, attempting to hide her identity as Federation Commissioner Sleer. (Sleer was devised as a new character during pre-production for the fourth season when it appeared that Pearce would not return to the series; upon the actress’ return, Sleer is rewritten as Servalan’s alias after her fall from the presidency.)
BBC1 premieres the 43rd episode of Terry Nation’s science fiction series Blake’s 7. Barbara Shelley guest stars.
BBC1 premieres the 44th episode of Terry Nation’s science fiction series Blake’s 7. Jacqueline Pearce and Kevin Stoney guest star.
BBC1 premieres the 45th episode of Terry Nation’s science fiction series Blake’s 7. Lynda Bellingham (All Creatures Great & Small) guest stars.
BBC1 premieres the 46th episode of Terry Nation’s science fiction series Blake’s 7. Richard Hurndall guest stars; Doctor Who producer John Nathan-Turner is so impressed with Hurndall’s “Hartnell-esque” performance that he casts the actor in the late William Hartnell’s role of the first Doctor in the 20th anniversary special The Five Doctors in 1983.
BBC1 premieres the 47th episode of Terry Nation’s science fiction series Blake’s 7. Jacqueline Pearce and Stratford Johns guest star.
BBC1 premieres the 48th episode of Terry Nation’s science fiction series Blake’s 7. Jacqueline Pearce guest stars.
BBC1 premieres the 49th episode of Terry Nation’s science fiction series Blake’s 7. Roy Kinnear guest stars.
BBC1 premieres the 60th episode of Terry Nation’s science fiction series Blake’s 7. John Savident guest stars.
BBC1 premieres the 60th episode of Terry Nation’s science fiction series Blake’s 7. This is Jacqueline Pearce’s final appearance as Servalan in the series.
BBC1 premieres the 52nd and final episode of Terry Nation’s science fiction series Blake’s 7. By all accounts one of the most memorable and unsettling television finales ever, the final episode hints strongly that evil has triumphed, and some viewers already experiencing depression as the Christmas holiday closes in are extremely disturbed by the series’ conclusion. Gareth Thomas guest stars as Blake, bringing the series full circle.