Now Mr Hoogstraten, 59, wants freedom for his old friend Robert Knapp, whom he calls "Uncle Bob", and has a criminal history of violence. He says he is also gathering evidence to demolish the case against fellow hitman David Croke. He claims he has a forensic report which was never used in the 2002 Old Bailey trial which resulted in Croke and Knapp being convicted of murder and Mr Hoogstraten found guilty of manslaughter. "They will be free within months," he said.