Green Street (Dir. Lexi Alexander, 2005): Stand your ground.

Expelled, unfairly, from Harvard, Matt Buckner (Elijah Wood) flees to England to his sister (Claire Forlani). Once there, he is befriended by her charming and dangerous brother-in-law, Pete Dunham (Charlie Hunnam), and introduced to the underworld of British football hooliganism. Matt learns to stand his ground through a friendship that develops against the backdrop of his street and often violent world. Green Street is a story of loyalty, trust and the sometimes brutal consequences of living close to the edge.

I.D. (Dir. Philip Davis, 1995): When you go undercover, remember one thing: who you are.

In an effort to halt the escalating violence of fanatical football supporters, four young policemen are sent undercover. One of these, John (Reece Dinsdale), soon finds his own personality changing and feels a sense of belonging he never felt on the force...

Love Honour And Obey (Dir. Dominic Anciano, 1999):

Johnny (Jonny Lee Miller) dreams of leaving his dead-end job as a courier. Through his best friend (Jude Law), nephew of the notorious crime lord Ray Kreed (Ray Winstone), he charms his way into the toughest gang in North London. Hungry for some real gangster action, Johnny sparks a feud between Ray's gang and another firm in South London.