“New York cops are very specific in terms of the way they talk and the way they handle themselves. All these cliches that, as an Englishman, I thought were from a bygone era or were a bit of poetic license with cop shows - the more you hang out with them, the more you realize how real that jargon is.”

“And if there was one title that could be applied to all my films, it would be 'Civil War' - not civil war in the way we know it, but the daily war that goes on between us all.”