Charles Bronson has described what it was like being caged underground next to Britain’s most dangerous prisoner at HMP Wakefield – also known as ‘Monster Mansion’ – after having revealed all in a brand-new documentary. Watch the clip here: 

Bronson was first imprisoned for armed robbery in 1974 when he was just 22, but his initial seven-year sentence was extended due to his attacks on guards and other inmates. It wasn't long after he was released in 1987 that he was back behind bars, leading to a total of more than 40 years in prison.