Think The Longest Yard, only with soccer instead. Well, to the English and the Europeans (and most of the rest of the non-U.S.A. world) that is football. Which is fitting, since it's a mostly-English cast, and set in an English prison.

No sense wasting space with plot summary, either of the above links can give you that. The cast is very heavy on faces familiar from the two Guy Ritchie London-gangster films, especially star Vinnie Jones (who's had some limited success in Hollywood stuff like Swordfish and Gone in 60 Seconds). The movie has plenty of (British) humor, lots of good dialogue, and is very true to its original material, even keeping some scenes identical in pacing and blocking.

A fun two hours or so, with some decent demonstrations of Jones' football skill. Makes me want to pull out my copy of Lock, Stock and Two Smoking Barrels.