|Beth Morris (1949 - )|
|Crucible of Terror (1971) [Jane]: Stabbed in the back by Mary Maude (who was possessed by Me Me Lay's spirit) while getting dressed in Mike Raven's studio. (Thanks to Thomas)
David Copperfield (1975) [Dora Spenlow]: Dies following a miscarriage. (Thanks to Gordon)
I, Claudius (1976) [Drusilla]: Stabbed to death (off-screen) by John Hurt, who insanely believes that they're both immortal; we only hear her scream from the other room.
Blake's 7: Mission to Destiny (1978) [Sara]: Killed in an explosion after she refuses to teleport off of a spaceship, not knowing it had been rigged with explosives. (I haven't seen this episode myself, but got the information from an episode guide's summary.)