CEP Senior Advisor Ian Acheson: "Every morning, men and women serving on the front line of His Majesty's Prison and Probation Service pull on a cheap uniform and go to work in what's been called the most hostile work environment in Europe.

The endemic violence in our jails means many of them are ending their shifts in hospital rather than home with their families.

A month ago, an officer went on duty on B wing in HMP Whitemoor, one of our maximum security prisons. He left in an ambulance and was put on a ventilator, unconscious, after a vicious assault."