1 October 1988: death of Roy Herrick who played Jean in The Reign of Terror (1964) and Parsons in The Invisible Enemy (1977) and the voice of Xoanon in The Face of Evil (also 1977).
1 October 1999: death of Noel Johnson who played King Thous in The Underwater Menace (1967) and Sir Charles Grover in Invasion of the Dinosaurs (1974).
1 October 2008: death of Ian Collier who played Stuart Hyde in The Time Monster (1972) and Omega in Arc of Infinity (1983), and reprised the role of Omega in Big Finish Productions' excellent Fifth Doctor audio Omega (2003).
ii) broadcast anniversaries
1 October 1966: broadcast of fourth episode of The Smugglers. Blake and his men defeat the Smugglers, and the Tardis lands somewhere cold...
1 October 1977: broadcast of first episode of The Invisible Enemy. Contact has been made! And the old console room returns.
1 October 2007: broadcast of first episode of Eye of the Gorgon (SJA). Sinister nuns, and poor Alan gets turned to stone.