15 March 1928: birth of Mervyn Haisman, who co-wrote The Abominable Snowmen (Second Doctor, 1967), The Web of Fear (Second Doctor, 1968) and (uncredited) The Dominators (Second Doctor, 1968).
15 March 1943: birth of Scott Fredericks, who played freedom fighter Boaz in Day of the Daleks (Third Doctor, 1972) and turncoat scientist Maxilian Stael in Image of the Fendahl (Fourth Doctor, 1977).
15 March 1947: birth of Tony Osoba, who played Lan in Destiny of the Daleks (Fourth Doctor, 1979), Kracauer in Dragonfire (Seventh Doctor, 1987) and Duke in Kill the Moon (Twelfth Doctor, 2014).
15 March 1992: birth of Anna Shaffer, who plays Ram's girlfriend Rachel in two episodes of Class (2016).
15 March 2008: death of Dennis Edwards who played the Centurion in the story we now call The Romans (First Doctor, 1965) and the surgeon Time Lord Gomer in The Invasion of Time (Fourth Doctor, 1978).
ii) broadcast anniversaries
15 March 1969: broadcast of second episode of The Space Pirates, the one surviving episode of the six-part series. With the Doctor, Jamie and Zoe trapped on one of the fragments of the beacon, Milo Clancey is arrested as a suspected pirate.
15 March 1975: broadcast of second episode of Genesis of the Daleks. The Doctor and Harry meet Davros and his team, including the newly-invented Daleks. Sarah, captive in the Thal dome, tries to escape.
15 March 1982: broadcast of third episode of Earthshock. The Cybermen take over the space freighter.
15 March 1983: broadcast of first episode of The King's Demons; first appearance of Gerald Flood as Kamelion and King John. The Tardis lands in 1215 to find King John is not where he should be, and Sir Gilles Estram is someone else entirely.
15 March 1984: broadcast of third episode of The Caves of Androzani. Morgus kills the President; The Doctor, captured by Stotz, manages to take control of Stotz's ship and bring it back to Androzani Minor for a crash landing.
15 March 2003: webcast of "The Child, part 2", sixth episode of Death Comes to Time.
15 March 2010: broadcast of Curse of Anubis, tenth episode of the Australian K9 series. K9 meets the Anubians, a race he helped in his forgotten past. Once peaceful, these creatures have now become warmongers. They trick K9 by worshipping him as their saviour. They unleash control devices and take over Gryffen, who banishes Darius from the mansion. Starkey opens up the Anubian Book of Deliverance and discovers their true plans. It is left to Darius to release K9 from Anubian control and thwart an alien invasion.