10 March 1956: birth of Lesley Dunlop, who played Norna (with her very '80s haircut) in Frontios (1984) and Susan Q in The Happiness Patrol (1988).
10 March 1975: birth of Yee Jee Tso, who played Chang Lee in Doctor Who: The TV Movie (1996)
ii) broadcast anniversary
10 March 1973: broadcast of third episode of Frontier in Space. The Master appears in the guise of a Commissioner from Sirius IV; meanwhile the Doctor is imprisoned on the Moon.
iii) date specified in canon
10 March 1942: setting of Sub-species, Eleventh Doctor/Amy/Rory comic strip in Doctor Who Adventures #202 (2010).