Certified Normal Accommodation (CNA): 1099
Peterborough is a category B local prison holding both male and female prisoners. The male and female parts of the prison are separated but both are on a single site. The prison is operated by Sodexo.
About this information
Certified Normal Accommodation (CNA) is the prison service’s own measure of how many prisoners can be held in decent and safe accommodation. Any occupancy above CNA means that the prison in question is overcrowded.
Men’s prisons in England and Wales fall into four separate security categories. Some prisons can operate under more than one category.
Category A: Category A prisons are high security prisons, holding those individuals considered the most threatening to the public should they escape. Category A prisons should not be overcrowded, given the high levels of security required.
Category B: Category B prisons, or local prisons, are the largest category of prison. They tend to hold un-sentenced prisoners, prisoners on remand awaiting trial, short-sentenced prisoners or those newly sentenced and awaiting transfer to another prison category. Category B prisons tend to be the most overcrowded, with a constantly churning population.
Category C: Category C prisons are sometimes called ‘training prisons’. They are meant to offer education and training to prisoners and the vast majority of prisoners on longer sentences will spend time in Category C accommodation. Historically not overcrowded, we now see more and more Category C prisons running overcrowded regimes.
Category D: Category D prisons offer open conditions and house those who can be reasonably trusted not to try to escape. Prisoners in Category D prisons will be given Release On Temporary Licence (ROTL) to work in the community or go on home leave, usually returning to the prison in the early evening. The majority of Category D prisoners will be towards the end of their sentence, and their period in open conditions is preparing them for their eventual release. Category D prisons tend not to be overcrowded.
The system for women’s prisons is different:
Restricted status: women placed on restricted status are deemed to pose a high risk to the public if they were to escape. They are held in closed women’s prisons, and sometimes placed in the segregation unit.
Closed prisons: the majority of women’s prisons are closed prisons. Women who are assessed as not being suitable for open conditions are held in these prisons.
Open prisons: there are two open prisons for women, Askham Grange and East Sutton Park. They hold women who have been assessed as posing a low risk.