There is only one prisoner who will go down in history as being Britain’s most notoriously violent inmate.

This is not a label you get overnight, and despite a couple of short-lived moments of freedom, he has been in prison since 1974, with the majority of those years held in solitary confinement.

He has spent time in the notorious “Hannibal Cage” at Wakefield prison due to his violent outbursts. The walls are made of reinforced concrete, and sheets of bulletproof glass allow the inmate to be observed 24 hours a day.

The cage within a cage has a table and chair made entirely of cardboard, and meals are slid through a 1-foot gap in the cell door. There is no human contact, not from the guards, and certainly not from other inmates.

He is alone except for the rare visit from a solicitor, and this meeting is conducted through a steel net.

Prisoner BT1314 now spends his days in a cell 12 foot by 6 foot. While many stress he has never murdered anyone, that isn't for the lack of...