I was lucky enough to see him on stage (last in an Alan Bennett play with Patricia Hayes, I seem to recall) but I also have fond memories of his film performances. My favourite scene in Captain's Paradise is at the end when the camera pulls away to show that he is handcuffed to the man standing next to him to whom he has been telling the story in flashback.
My late father-in-law was a great fan and they corresponded over T.S.Eliot who they both admired,( after F-i-L had seen him in The Cocktail Party) and the war-time Navy, in which they both served. I hope Ma-in-law has kept the letters.
RtS