That one is on my list too, @MADad. I find I’m recognizing not only actors but even buildings in my British TV crime binge. Among my favorite recurring actors: Neil Morrissey (Line of Duty, Unforgotten); Nigel Lindsay (The Tunnel, Unforgotten, Safe); Mark Bottar (Unforgotten, Line of Duty); Adeel Akhtar (in almost everything I watch).
I’m watching Line of Duty (Amazon) now - excellent, about an anti-corruption police unit in an unspecified city (not London). You know it’s a good show when a 15-minute scene, played by 4 actors sitting at a conference table, is a nail biter. And there are so many of those. I didn’t become a fan until the second season, but I’m glad I persisted. Adrian Dunbar rules!