I think Tony Booth is a good suggestion, similarly Zara Nutley from Mind Your Language and Never the Twain is said to be in nursing home. She is bound to get an obit as there is a real 70s sitcom bashing vibe at the moment.
Lupita Tovar might be a good idea and Kenneth Anger would be an interesting pick, then there are the cancer types like Caroline Aherne, Rene Angeli