This is Robert Carlyle's first movie as a director. He previously directed an episode of "Stargate Universe (2009)."
Both Robert Carlyle and Ashley Jensen have appeared on screen as M.C Beaton characters: Hamish Macbeth and Agatha Raisin respectively.
Near the beginning of this movie, Barney (Robert Carlyle) asks the three men in the barbers why "none of you want your hair to get cut...by me?" When he says "By me?" he flourishes his hands similar to Carlyle's character of Rumpelstiltskin from the TV series "Once Upon a Time (2011)" (2011 - 2018).
Ray Winstone plays a police officer investigating a serial killer barber. He previously played a serial killer barber as the title character in "Sweeney Todd (2006)."