Poll: Best Long Running British TV Comedy

Which of these UK TV comedy shows* that lasted at least 4 series is the funniest? *Scripted mainly comedy shows, no talk shows, game shows or shows where the comedy part was secondary/incidental, and only entirely UK productions. Limited to the 31 most popular shows based on IMDb ratings (2,000 votes or more) plus the 4 longest running shows with fewer votes. Check out this poll for shows that lasted less than 4 series. Discuss the list here.