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.