Kirsten (Sophie Rundle), talking over the radio with Catherine (Sarah Lancashire), jokingly calls the driver of the white van "Jenson Button" in reference to the British Formula One champion.
George Costigan (Nevison Gallagher) & Siobhan Finneran (Clare Cartwright) also worked together on Unforgiven (2009) as Eddie Ackroyd & Izzie Ingram respectively.
Charlie Murphy (Ann Gallagher) & Sophie Rundle (Kirsten McAskill) also worked together on Peaky Blinders (2013) as Jessie Eden & Ada Shelby respectively.