30 May 1938: birth of Christopher Robbie, who played the Karkus in The Mind Robber (1969) and the Cyber-Leader in Revenge of the Cybermen (1975)
ii) broadcast anniversaries
30 May 1964: broadcast of "The Warriors of Death", second episode of the story we now call The Aztecs. In his efforts to regain entrance to the tomb, the Doctor is inadvertently responsible for poisoning Ian.
30 May 1970: broadcast of fourth episode of Inferno. The Doctor is imprisoned, but escapes, trying to stop the drilling of the planet "screaming out its rage".
30 May 2003: webcast of fifth episode of Shada. The Doctor and friends evade the Krargs and return to Cambridge, and then go to Shada where Professor Chronotis reveals his true identity as Salyavin.
30 May 2020: webcast of The Secret of Novice Hame.