That has got to be one of the most painfully unfunny shows I've ever seen. Even my older parents couldn't stand it and they love British shows.
The only ones I ever liked were ‘To the Manor Born’ and ‘Are You Being Served?’ I would figure the latter would be uncomfortable for anyone easily offended by double entendres. The former is simply charming from beginning to end. ‘Last of the Summer Wine’ isn’t even as charming as ‘Ballykissangel’, which wore out its welcome in about a season and a half for me (the concepts are similar).