i) births and deaths

11 January 1941: birth of Malcolm Terris, who played Etnin in The Dominators (Second Doctor, 1968) and the Co-pilot in The Horns of Nimon (Fourth Doctor, 1980).

11 January 1995: death of Peter Pratt, who played the Master in The Deadly Assassin (Fourth Doctor, 1976).

ii) broadcast anniversaries

11 January 1964: broadcast of "The Ambush", fourth episode of hte story we now call The Daleks. The Doctor and friends escape the Dalek city, and the Thals are ambushed by the Daleks; the Doctor realises that the Daleks still have the mercury fluid link.

11 January 1969: broadcast of third episode of The Krotons. The Doctor and Zoe prepare to attack the Krotons, who still hold Jamie prisoner in the Dynotrope.

11 January 1975: broadcast of third episode of Robot. Sarah goes to the Scientific Reform Society and discovers that Kettlewell is one of the conspirators. Hilda Winters and Think Tank retreat to their bunker.

11 January 1982: broadcast of third episode of Castrovalva. The Doctor, Tegan and Nyssa explore Castrovalva; but the captive Adric makes an appearance and the town starts to fold in on itself…

11 January 1983: broadcast of third episode of Arc of Infinity. The Doctor's execution has been faked by Hedin, who is under the control of Omega.