Certified Normal Accommodation (CNA): 397
Over its 170 years of existence, Aylesbury prison has operated as a women’s prison, a girls’ borstal, a men’s prison, and an ‘inebriates centre’. Since the 1960s it has held young men between the ages of 17 and 21, and now holds the longest-sentenced young adult males in England and Wales.
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.