It was a while back but Flying High was funny (Cummings was in it), and Rising Damp was a hoot. And I like Vicious, which is recent. If you are in to renting movies, check out the “Carry On” series. I particularly liked Make mine Mink, but most were named “Carry On Nurse, Carry on Dr.” etc. They had a wonderful cast. And I also liked the movie with Maggie Smith...it has several titles, one of them was A Royal Affair, I think. Its about a local gov’t party holding a dinner/dance to celebrate Queen Elizabeth’s engagement to Prince Phillip during the privations of WW II and after, and how a social climber finagles to get an invite.
The Carry Ons are hugely popular here, they are a huge part of UK culture/pop culture. As much as The Beatles or James Bond.