11 October 1986: death of John Crockett, who directed "Wall of Lies", the fourth episode of the story we now call Marco Polo (First Doctor, 1964) and all four episodes of the story we now call The Aztecs.
11 October 1988: death of Roy Herrick, who was the counter-revolutionary Jean in the story we now call The Reign of Terror (First Doctor, 1964) and Parsons, a space medic in The Invisible Enemy (Fourth Doctor, 1977)
11 October 1960: birth of Nicola Bryant, who played the Fifth/Sixth Doctor companion Peri (Perpugilliam Brown) from 1984 to 1986 and continues to appear in (and also direct) Big Finish audios.
ii) broadcast anniversaries
11 October 1975: broadcast of episode 3 of Planet of Evil. The Morestran ship cannot escape from Zeta Minor; Salamar prepares to eject the Doctor and Sarah into space...
11 October 1980: broadcast of episode 3 of Meglos. Much confusion of identity, and the Doctor is prepared for sacrifice to the Dodecahedron...
11 October 1986: broadcast of episode 2 of Mindwarp (ToaTL 6). Confusing stuff about Peri being captured by the Mentors; the Doctor thinks it is not true.
11 October 1989: broadcast of episode 2 of Ghost Light. The Doctor finds Control; Control releases Light.
11 October 2010: broadcast of episode 1 of The Nightmare Man (Sarah Jane Adventures), the first story of the fourth and penultimate series of the show. Luke, setting off to Oxford, is haunted by the Nightmare Man...
11 October 2011: broadcast of episode 2 of The Curse of Clyde Langer (Sarah Jane Adventures). After some pretty gut-wrenching drama, the curse is lifted. One of the great stories.
11 October 2014: broadcast of Mummy on the Orient Express. The Doctor and Clara investigate the deaths of passengers on board a space-bound train, who claim to have seen a mummy that is not visible to others prior to their deaths.