Pandemic influenza: guidance on preparing mental health services in England http://www.dh.gov.uk/en/Publicationsandstatistics/Publications/PublicationsPolicyAndGuidance/DH_085925?IdcService=GET_FILE&dID=168200&Rendition=Web
"This document is designed to assist mental health trusts and other specialist mental health service providers in developing their plans for responding to an influenza pandemic. This document details a national approach, setting out the key planning assumptions and principles, roles and responsibilities that should inform the development of local plans."