A letter from Dr Nick Broughton, the national programme director for mental health, was sent on Tuesday to England’s 36 Integrated Care Boards (ICBs).
He wrote that the decision to transfer patients out of St Andrew’s “has been clinically led” and that patients would remain at the hospital “while new provision is identified”.
“The improvement support and enhanced safety monitoring put in place by NHS England will continue,” he added.
Dr Broughton said they were working to ensure the transfer would be safe.