Leaving prison and starting afresh should be a simple matter of deciding to put the past behind you and staying out of trouble.

But for many prisoners, particularly the young, things are not that easy, and huge numbers end up re-offending.
As many as eight out of 10 under-18s will return to crime within two years of leaving custody, as will three quarters of 15 to 21-year-olds, says crime reduction charity Nacro.