Luca Changretta (Adrien Brody) says to Alfie Solomons (Tom Hardy): "These days, back in the old country, a lot of the, er, you know, the Jewish people, they, er...they are having to pass themselves off as Italian." Adrien Brody is Jewish, while his character is Italian.
The shoot out is filmed in the fire station next to Piccadilly station.
In 2007 Helen McCrory (Polly Gray) and Aidan Gillen (Aberama Gold) did a play called PLATONOV as lovers.
Charlie Murphy (Jessie Eden) & Sophie Rundle (Ada Shelby) also worked together on Happy Valley (2014) as Ann Gallagher & Kirsten McAskill respectively.