Slow Horses (Slough House) by Mick Herron. “Mick Herron’s The Slough House series (Jackson Lamb) is based on a group of MI-5 misfits who despite their quirks usually save the UK from some terrorist threat (Slow Horses, Real Tigers, London Rules, Dead Lions). Jackson Lamb is like a George Smiley (John Le Carre) character that has gone on a bender but is still in Her Majesty’s Service.”