6. Charles Bronson
Charles Bronson, 61, whose real name is Michael Peterson, is serving a life sentence for robbery and kidnap and has earned public notoriety with a history of violence both inside and outside of prison. While inside, Bronson has taken hostages in sieges, been involved in violence, caused damage in rooftop protests – and become a prolific artist – to vent some of those daily frustrations. A notorious and violent criminal he may be, but like the Krays he loves his mum; having raised thousands of pounds for a holiday for his mother through the sale of some of his works of art.