15 December 1940: birth of Pennant Roberts, who directed The Face of Evil (1977), The Sun Makers (1977), The Pirate Planet (1978), Shada (unbroadcast but would have been 1980), Warriors of the Deep (1984) and Timelash (1985).
15 December 1945: birth of Sarah Hellings, who directed Mark of the Rani (1985).
ii) broadcast anniversaries
15 December 1973: broadcast of first episode of The Time Warrior, starting Season 11. First appearance of both Elizabeth Sladen as Sarah Jane Smith and the Sontarans. Scientists are being kidnapped through time to the medieval castle of Irongron, where his mysterious guest Linx is forcing them to repair his spaceship.
15 December 1979: broadcast of fourth episode of Nightmare of Eden. The ships are separated and the Doctor captures the bad guys in the projection.