Michael Parr, 32, and Nathan Mann, 23, cut his neck with a scalpel made from plastic cutlery and a razor blade...
Parr had earlier pleaded guilty to murder and must serve a minimum term of 32 years. He was already serving life for the attempted murder of a hospital patient.
Mann pleaded guilty to manslaughter on the grounds of diminished responsibility and was sentenced to life with a minimum term of 16 years, to run consecutively to the 24-year minimum sentence he is already serving for a double murder.