Last summer Jack Lowden met a fan. The star of Slow Horses was cycling past a pub at lunchtime when a man ran towards him. “He was so drunk that he carried his pint with him and dropped it,” Lowden says, laughing. “He stumbled and went, ‘Mate, I just wanna say I really love Sea Horses.’ ”
Nothing says that an actor is in a hit TV show more than being heckled by a drunk. Sea … sorry, Slow Horses, though, is not your usual smash. It is a classic “sleeper hit”. Hidden away on Apple TV+, it has taken three series for the spy drama to break cover.