|Girly (Mumsy, Nanny, Sonny & Girly) (1969) [Nanny]: Decapitated (off-screen) by Vanessa Howard. Neither her death nor her body is actually shown, but Vanessa has some dialogue hinting that Pat's head is inside a cooking pot.
10 Rillington Place (1971) [Ethel Christie]: Strangled (off-screen) by Richard Attenborough. Her body is shown afterwards (completely covered by a sheet) as he prepares to bury her under the floorboards.
Hammer House of Horror: Rude Awakening (1980) [Emily Shenley]: Smothered with a pillow by Denholm Elliott. There is also an earlier nightmare sequence in which Denholm sees her body fall out of a dumbwaiter.