|BBC Sunday Night Theatre: Romeo & Juliet (1955) [Juliet]: Commits suicide by stabbing herself. (I haven't seen this version, but we all know the story...)
The Ship That Died of Shame (PT Raiders) (1955) [Helen Randall]: Killed during a bombing raid. (Thanks to Gordon)
Carve Her Name with Pride (1958) [Violette Szabo]: Executed (off-camera), along with Anne Leon and Nicole Stephane, by a Nazi firing squad. The camera pans up to the sky as we hear the shots. (Thanks to Golgo13)
BBC Play of the Month: Mary, Queen of Scots (1969) [Mary Stuart]: Executed (off-screen) by beheading. (Thanks to Gordon)
Julius Caesar (1979) [Portia]: Commits suicide (off-screen) by swallowing hot coals. We learn of her death when Richard Pasco informs David Collings. (Thanks to Gordon)
Blood Link (1982) [Lady in Ballroom]: Stabbed in the back by Michael Moriarty while dancing with him.