To ask the Attorney-General for how many acts of violence in prisons the Crown Prosecution Service decided to (a) bring or (b) not bring a prosecution for each type of offence in each of the last four years.

The Crown Prosecution Service (CPS) maintains a central record of the number of cases where the CPS has been asked to make a charging decision and the decision made, either to charge or to take no further action. No record is held as to where an alleged offence was said to have taken place. To obtain details of alleged acts of violence in prisons referred to the CPS for a charging decision would require a manual exercise of reviewing individual case files to be undertaken at a disproportionate cost.