That this House welcomes the decision to hold the largest ever statutory consultation about the organisation and provision of tier 4 mental health services for people with personality disorders; is concerned that the Henderson Hospital personality service has been temporarily closed ahead of the consultation; notes that the Henderson democratic residential therapeutic community model is an effective treatment of complex personality disorder which reduces acute readmissions and interventions by the criminal justice system; is further concerned that flaws in NHS commissioning arrangements have put this specialist mental health service at risk of permanent closure; and calls on the Department of Heath and NHS London to take the steps necessary to safeguard the Henderson model and strengthen arrangements for commissioning specialist residential tier 4 mental health services for severe personality disorder in the future.