What other series/ films are there like this one?

Short answer, imo, would be "no!". Otoh, the other Croft/Perry programmes are extremely well loved, and feature many of the cast.

Other 1920s-themed programme have a similar vibe, but aren't really anything like the same - House of Eliott, Upstair Downstairs, The Forsytes (a bit) - I mean, they aren't exactly comedies, for a start. I love Poirot, and it's intermittantly graced by YRML cast and props (Lord Meldrum's Roman fancy dress costume, and Cissy's ballerina painting to name two - and no, I don't study them that hard, I just noticed by fluke!), but again, it's atmosphere rather than content that's reflected.

Sorry I can't be more helpful. There's always Evcelyn Waugh and P G Wodehouse's novels, I suppose!

Nothing I've seen can compare with it. I enjoyed Jeeves and Wooster a lot; it probably comes in second. Keeping Up Appearances is funny in spurts.

I couldn't watch even a whole episode of Dad's Army. I slogged through all of 'Allo 'Allo but it was tedious.