External alterations; internal alterations; repair; refurbishment; infill and rooftop extensions to Twyford Abbey (Grade II Listed) to facilitate its conversion into self-contained flats and residents lounge (Use Class C3); construction of new residential buildings (ranging from two to six-storeys) in the grounds of the Abbey (Use Class C3); demolition of existing gatehouse and replacement with two two-storey self-contained townhouses (Use Class C3); demolition of workshop attached to walled garden (Grade II Listed) and replacement with a self-contained single-storey dwellinghouse (Use Class C3); providing a total of 326 self-contained units; demolition of post-war extensions to Abbey and other pre-war structures within the grounds, excluding the cottage; retention and repair of the Grade II Listed walled garden and attached cottage to provide ancillary facilities management accommodation and residents facilities; comprehensive landscaping (including installation of boundary treatments and terraces) and tree works; provision of hardstanding parking areas; changes to access; and other associated constructions works. (Listed Building Consent)