TVOntario is a Canadian broadcasting network that airs arts and education progamming within the province of Ontario. Beginning in 1976 and throughout the 1980s, it aired specially edited episodes of Doctor Who, with introductory narration by Howard da Silva added to the Tom Baker episodes from Season 12 to 15 in order to recap the storyline so far. In addition, noted science fiction author Judith Merril introduced a number of episodes and discussed the science fiction themes therein.
The Peter Davison series began in the fall of 1984 but The Five Doctors did not air with Season 20. Colin baker began in 1987 and Sylvester McCoy's season 24 started in January 1989.
TVOntario's broadcasts ended in September 1989 with the repeat airing of Dragonfire. More Ontario viewers began watching unaltered versions of the episodes via Public Broadcasting Service affiliates in the United States that began to be received in Canada via cable television. Some of da Silva's recaps and narration have been included as bonus features on some DVD releases of Tom Baker-era episodes.