... are categorised according to and the probability that they would attempt to escape and the risk they would pose to society if they were successful in doing so. The categories are labelled A, B, C, and D Prisons are often maintained for each category of prisoner they hold. Category A prisoners are classed as being highly dangerous and should be held in a high security environment and escape must be made highly impossible, there are eight high security prisons, Belmarsh is one example of a category A prison. Category B prisons hold prisoners who may not need to be held in high security environment but for whom escape must be made very difficult. An example of a category B prison is Blakenhurst prison in Redditch. Category C prisons hold the same category prisoners, these are prisoners who cannot be trusted in open conditions but are assessed as being unlikely to ...

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