HM Prison Belmarsh
Royal Borough of Greenwich, United Kingdom · built 1992
His Majesty's Prison Belmarsh is a Category A men's prison located in Thamesmead, south-east London, England. Belmarsh Prison is run by His Majesty's Prison Service and is situated next to HMP Isis and HMP Thameside. The prison is used for high-profile prisoners, particularly those concerning national security. Within the grounds of the prison is the High Security Unit (HSU), consisting of 48 single cells. Belmarsh is nicknamed "Hellmarsh", owing to the high number of physical and authority abuses reported by both the prison's inmates (including former politician Jeffrey Archer, who coined the name and was imprisoned there for two years for perjury), and human rights activists.
Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).