Welcome to HMP Belmarsh

Docu by Ross Kemp
HMP Belmarsh was the first male prison to be built in London for more than a century when it opened in 1991.
Kemp said: 'It houses some of the most dangerous prisoners in Britain. No film crew has ever been granted access to it before, but I'm on my way in there now.'
Kemp also meets activist Tommy Robinson who served nine weeks at HMP Belmarsh after being jailed for contempt of court. Robinson also revealed he had seen Wikileaks founder Julian Assange, a fellow inmate, through a window at the prison in Thamesmead, South East London.