Also a stage director and dramatist, he was in "Rumpole of the Bailey" (1987-1992), "Bullshot Crummond" (1983), and TV's "Secret Army" (1977-1979).

https://www.imdb.com/name/nm0671459/?ref_=tt_cl_t_14

https://www.theguardian.com/tv-and-radio/2022/apr/14/ron-pember-obituary
(do read all of it)

First paragraphs:

By Toby Hadoke

The actor Ron Pember, who has died aged 87, was familiar to television audiences thanks to his wiry physique and his long, thin and cadaverous face, often moustachioed. His prominent cheekbones, domed forehead and darting eyes were excellent tools for conveying wily factotums, jobsworth officials, dodgy spivs and seedy operators on both sides of the law.

Hard-working, natural and versatile, he swung happily from good value cameos to leading character parts, with his role as radio operator and resistance member Alain Muny in Secret Army (1977-79) cementing his place as a television favourite. Now often unjustly languishing in the shadow of the sitcom ’Allo ’Allo, which plundered it for comic effect, Secret Army was a respected, sophisticated drama that brought nuance to its depiction of a fictional resistance movement in German-occupied Belgium during the second world war, regularly drawing audiences of 16 million.

He was also a deft comedy turn. Recurring appearances in the Dick Emery Show (1975-81), the Two Ronnies (1980-84), and in the sitcom Sink Or Swim (1980-81) augmented many memorable guest roles, including as tenants’ association chairman Baz in Only Fools and Horses (1983) and a sadistic taxman in Red Dwarf (1988)...

(snip)

I knew him as the cafe proprietor in the early scenes of TV's "The Naked Civil Servant" (1975) starring John Hurt.

I got curious and started looking up who from that cast is still alive.

So far, I've found these (three were born in the 1940s):

John Rhys-Davies (Barn Door)
Patricia Hodge (Ballet Teacher)
Adrian Shergold ("Gloria")
Antonia Pemberton (Mrs. Longhurst) - maybe? (born 1927)

And a fun bit of trivia - Phil Daniels, who was 16 when he played the hoodlum at the end of the movie, also appeared as an evil circus performer in Sting's movie "The Bride" (1985) - and BOTH movies include the real Quentin Crisp! (But they never shared a scene in either movie.) He was also in the 1979 "Quadrophenia," which included Sting.