You don't have Broadchurch in there. Also Annika. And then, non-UK Mayor of Easttown
*Mare of Easttown
Ha ha! Yes it is.
Annika is fantastic! I love the lead actress. She was great in Unforgotten.
Seconding Broadchurch, it’s incredible. Big Little Lies too. Poker Face arguably counts, with its Columbo-esque “just one more thing” motif. And The Flight Attendant gave me a lot more respect for Kaley Cuoco (of Big Bang Theory fame), though it’s also got some (darkly) comedic elements. Naturally, do a cursory search for all of these before passing them along: I enjoyed them, but idk what your grandparents are like…
True detective is great. At least season 1
Season 1 is a master piece on another level. The other seasons are good too, but when compared with s1 they can't compete.
The cozy murder genre is my jam. Here’s some more they might want to check out:
(Bonus recommendation, with a caveat: the new limited series Bodies on Netflix— I’m 5 episodes in, and it’s pretty good!)
I'm not seeing Foyle's War listed anywhere here, so I'll throw that one in. Murder mysteries in Blitz-era England.
Surprised they didn't watch Luther.
Monk maybe of their taste, considering mentalist and poirot.
Life on Mars, then it's sequel Ashes to Ashes and completely separately a show called Endeavour.
Miss Fisher's Murder Mysteries is Australian rather than British but still quite excellent.
Vera is my absolute favorite British detective show! Also really enjoyed Grandchester, especially if they liked father Brown. Line of duty is pretty good too. Unforgotten is really good as well.
Vera and Shetland
Young Wallander
Psych
Monk! It's funny. Very well done.
Well it's not British and a bit old and I have no clue where it could be currently watched, but my grandparents and aunt watched Columbo regularely.
Criminal Minds
Pie in the Sky!
I really love the old Sherlock Holmes show with Jeremy Brett. Probably my favorite portrayal of the great detective
Cadfael. Rosemary and Thyme. Hetty Wainthropp.