Yeah it's a really great idea to dehumanise prisons further by making eight men share a cell and take away any rehabilitation facialities available to them, after all we all want mentally ill,violent, angry men released into society after they've served their sentences don't we, when they only went in there for credit card fraud in the first place?
We need better social education to stop people resorting to crime in the first place, better and more effective community punishments and prison for only violent and extreme crime. We need to up the ante for people who think it's ok to physically hurt and show theives etc there is another way than crime to obtaining what they want in life, that way violent and sexual crime begin to be seriously stigmatised instead of just being lumped into a whole big pot with more trivial crime and by definition becomes less and less socially acceptable, because there are places where violece for it's own sake almost has a sort of kudos ( evident from the happy slaping videos etc) and it's this normalisation of violence that is so very dangerous, and it's this that we must stop.
Harsher jails will not do it, actually it will result in quite the opposite effect.
I have no idea about the levels of immigrants in jail here so without some extensive research that I honestly don't have time to do, I couldn't really comment on it.