Ever since watching the excellent first series of Slow Horses (also watched series 2 recently) i've been attempting to read all the books in the Slough House series of novels on which the tv series is based. I've either 2 or 3 left to read.
He also writes a series of books involving PI Zoe Boehm (read the first) and some stand alone novels. Just last night finished 'Reconstruction', an excellent suspense novel with many twists and turns, involving the intelligence agencies.
Will browse on Amazon later today to purchase another 3 of his books, a Slough House, a Zoe Boehm and a stand alone one, probably 'Nobody Walks' as it, too, involves the intelligence agencies.