Pentonville Prison

HM Prison Pentonville (informally "The Ville") is a Category B/C men's prison, operated by Her Majesty's Prison Service. Pentonville Prison is not actually within Pentonville itself, but is located further north, on the Caledonian Road in the Barnsbury area of the London Borough of Islington, in inner-North London, England.

More information on the Wikipedia page