Starred Up (2013)
Just saw this yesterday - fantastic gritty British Drama about a volatile, violent 19 year old offender who is transfered to a new prison. It is similar in ways to Bronson but without the stylised presentation. This one is more raw and realistic (a bit like SCUM in that respect).
Jack O'Connell is amazing in the lead - I loved him in Eden Lake, where he also played a vicious little thug. He was also in the recent 300 film. Honestly, check this one out and thank me later..