Some of these are older shows:
Benidorm - I'm surprised more US gays don't know about this show. It's always had gay characters. Sitcom about British people at a resort in Spain. Siobhan Finneran (O'Brien on Downton Abbey) plays a loud mouth British wife. And Sheila Reid plays one of the funniest characters ever committed to tv.
Cradle to Grave (I hope they do a 2nd season). Lucy Speed plays the mother (EastEnders watchers know her as Natalie married to Barry). In the second or third episode, there is a hilarious nude dance with a guy getting a cock slapped in his face.
Stella - starring and written by Ruth Jones. Some great quirky characters (Aunty Brenda). And the guy who plays her oldest son is hunky.
The Syndicate - every season is a fictional story about a group of people playing the lottery.
Fresh Meat - six college students share a house
The IT Crowd - sitcom about working in the IT Department
This Life - show about five young professionals sharing a house (one whom is gay).
Clocking Off- (so hard to find) - each episode focuses on a different employee at a textile factory. I think it's interesting because it weaves in the different characters even though each story is about one specific employee.
After You've Gone - for the Celia Imrie fans, she plays a bossy mother-in-law
Goodnight Sweetheart - great sitcom about a man who time travels back to World War 2
Brush Strokes - (older sitcom) about Jacko, a carefree ladies man, played by Karl Howman (a very charming actor)
Mulberry - Karl Howman (playing Death) and Geraldine McEwan, his intended victim. Death is not a subject matter that everyone is comfortable with, but this is an interesting show.
Chewing Gum - quirky black girl living in public housing
Only Fools and Horses