Replacement of the external escape/maintenance staircase with new enclosed escape staircase and provision of new secure mesh boundary fence to be installed along the existing timber fence, and Internally - Change of use at first floor of the existing Mental Health Unit, from outpatient clinic and offices to wards with sleeping accommodation (Class C2A Secure Residential Institution), internal alterations and refurbishment to create a ward for 8 patients, including building services alterations.