source: The Guardian
published: 25 August 2015
The number of the most dangerous male prisoners in England being held in a special “jail within a jail” system has doubled over the past decade, inspectors have revealed.
The first thematic inspection report of the system of close supervision centres in high-security prisons since 2006 also found more than half of those held in special conditions are Muslim and about a third are from black and minority ethnic (BME) groups.

source: 