I bought a collection of the Slough House thrillers by Mike Herron, the books on which the Apple TV show Slow Horses was based.
I find the way Herron writes, very nice. He usually designs every paragraph from the perspective of one of the Slow Horses, or someone useful to the story. But he also changes the tone, the wording, in the way that character would tell that part.
Plus the story kind of takes a modern twist on the tired old spy stories and it contains a fair amount of humour.