Nonton HMP Belmarsh Sub Indo

Former HMP Belmarsh inmates, retired prison staff and experts reveal untold stories of life in London's toughest high-security prison, where exceptional risk Category A criminals are detained.

• Geoffrey Wansell
• Samson 'Yammy B' Mirza
• Ray Bishop
• David Navarro
• Noel 'Razor' Smith
• Kevin Lane