<Tr> <Th> Managed by </Th> <Td> HM Prison Services </Td> </Tr> <Tr> <Th> Governor </Th> <Td> Susan Howard </Td> </Tr> <P> Her Majesty's Prison Wakefield is a Category A men's prison, located in Wakefield, West Yorkshire, England . The prison is operated by Her Majesty's Prison Service, and is the largest high - security prison in the United Kingdom (and western Europe). The prison has been nicknamed the "Monster Mansion" due to the large number of high - profile, high - risk sex offenders and murderers held there . </P> <P> Wakefield Prison was originally built as a house of correction in 1594 . Most of the current prison buildings date from Victorian times . The current prison was designated a Dispersal prison in 1966 and is the oldest of the Dispersal prisons still operating across England and Wales . </P>

What is the highest security prison in the uk