Currently working our way through Slow Horses on AppleTV+. It's pretty great, TBH. Fantastic cast, particularly Gary Oldman's spectacularly sleazy Jackson Lamb, but the performances are all good and it seems unfair to start picking actors out. (OK, maybe Kirsten Scott Thomas' icy deputy head of MI5…)
There's a nasty, twisty plot that stays just the right side of cynically believable, whilst the whole thing is stylishly shot, but resolutely unglamorous.
The basic conceit (focussing on MI5's worst of the worst, a collection of fuck-ups shuffled off to the dilapidated environs of Slough House, a few miles across London from the shiny HQ of MI5) makes a pleasing change from the usual slick, competent types that populate these kinds of thrillers… and you quickly realise that even the smug bastards of MI5 proper are really only there because they're better at covering their arses than the losers.
Oh, and an original theme tune performed by Mick Jagger, no less.
We haven't finished this series yet, but I believe a second is in the works, which I'll be very happy to watch.