Closed visits booths in the visits hall of
HMP Pentonville, London, United Kingdom. HM Prison Pentonville operated by Her Majesty's Prison Service is a Category B men's prison with a capacity of approximately 1200 inmates, Pentonville Prison is located on Caledonian Road in the Barnsbury area of the London Borough of Islington, North London, United Kingdom. (Photo by Andy Aitchison)