RIP David.

He was also in the original Hitchhiker's Guide, the Morecambe and Wise show, the Benny Hill show, among others.
And
Doctor Who, specifically playing the Minotaur in
The Time Monster.
Actually, there's a funny anecdote about his role in the original
The Hitch-Hiker's Guide to the Galaxy TV series (there's apparently a new TV series being made). During rehearsals, David Learner, the man who played the body of Marvin got to talking with Prowse, and asked him why he thought George Lucas overdubbed his voice with James Earl Jones. Prowse replied, in a West Counties accent, "Oi have no oidea."