27 May 1926: birth of Peter Ling, who wrote The Mind Robber (1968).
27 May 1981: death of Kit Pedler, who co-wrote The Tenth Planet (1966), The Moonbase (1967) and The Tomb of the Cybermen (1967).
ii) broadcast anniversaries
27 May 1967: broadcast of second episode of Evil of the Daleks; first appearance of Deborah Watling as Victoria Waterfield. The Doctor and Jamie are transported back to 1866, and Jamie is captured by a mysterious intruder.
27 May 1972: broadcast of second episode of The Time Monster. Stu has been aged by the effects of TOMTIT; the Master evades Benton by tricking him.
27 May 1996: broadcast of Doctor Who: The Movie on BBC (it had already been shown in the USA and Canada).
27 May 2007: broadcast of The Idiot's Lantern. The Doctor prevents The Wire from feeding on the energy of TV owners watching the 1953 coronation.