A judge voiced his indignation after being forced to send a vulnerable woman to prison for possession of a knife that she was preparing to cut herself with.

Judge Jacobs, sitting at Norwich Crown Court, was forced to jail Rebecca Gidney, 30, for a year because she had been diagnosed as having an untreatable personality disorder - and did not fall within the group of defendants who could be placed under the care of the mental health system. About 3,000 mentally ill people are estimated to be in the prison system for a similar reason.