HC Deb 15 April 1983 vol 40 c457W
Mr. Grylls

asked the Secretary of State for the Home Department how many prisoners are known to be mentally-ill or to have had any history of mental illness.

Mr. Mellor

Prison medical officers make six-monthly returns giving details of those in prison department establishments whom they consider to be mentally disordered within the meaning of the Mental Health Act 1959. On 30 September 1982, the most recent date for which statistics are available, this census recorded 286 who were mentally disordered, of whom 210 were diagnosed as suffering from mental illness.