Oops - I had not seen your “gritty’ comment - that rules out Larkrise and Cranford - they are not gritty - but another vote for the British Sherlock - and certainly MI 5 (although I do get irritated with their political slat at times).
“although I do get irritated with their political slat at times”
MI5 irritated me as well....makes you wonder why we call them allies.....lol
But, taken in context they are no worse than CSI or some of the others here. They all seem to dislike Americans. One who thinks their doodoo does not smell, and the other wants to smell just like their European critics..and not stupid Americans..who they must endure.