HM_Prison_Full_Sutton--Dennis_Nilsen

HM Prison Full Sutton is a Category A and B men's prison in the village of Full Sutton, near Pocklington in the East Riding of Yorkshire, England. Full Sutton is operated by His Majesty's Prison Service, and holds 596 inmates, as of September 2018. The prison's primary function is to hold, in conditions of high security, some of the most difficult and dangerous criminals in the country.
The prison also has a unit known as the Close Supervision Centre, which is referred to as a "prison inside a prison". This is used to house prisoners who are a high risk to the public and national security. HMP Full Sutton will not normally accept prisoners who have been sentenced to less than four years, or who have less than twelve months left to serve.