I have been asked to reply.
Section 31(3) of the Mental Health Act 2007, which the Government are committed to commencing in England by April 2010, places a duty on hospital managers to ensure that under 18s are treated in an environment which is suitable having regard to their age (subject to their needs).
I refer the hon. Member to the answer I gave him on 18 May 2009, Official Report, column 1238W, where figures were provided for the number of bed-days for under 18s on child and adolescent mental health services and adult psychiatric wards, and these showed that in quarter 3 of 2008-09, the latest quarter for which data are available there were no bed-days for under 16-year-olds in adult psychiatric wards and 2,918 bed-days for 16 to 17-year-olds on adult psychiatric wards. This represents less than 7 per cent. of the total bed-days young people spent on psychiatric wards in this period, a significant reduction from 12 per cent. in 2006-07. We are continuing to monitor progress on this issue.
The National Mental Health Development Unit is currently undertaking a programme of awareness raising, self-assessment and support for trusts on this issue.
A bed-day is a day during which a person is confined to a bed and in which the patient stays overnight in a hospital.