Development to provide a total of 326 self-contained residential units comprising; phased construction of seven blocks of flats (ranging from two to six-storeys); two two-storey detached dwellinghouses (following demolition of existing gatehouse); and a terrace of two-storey dwellinghouses in the grounds of Twyford Abbey (all Use Class C3); conversion of Twyford Abbey (Grade II Listed) into flats (Use Class C3) and provision of residents lounge; demolition of workshop attached to the Grade II listed walled garden and replacement with a single storey dwellinghouse (Use Class C3); facilitated by repair; refurbishment; infill and rooftop extensions; demolition of post-war extensions and other pre-war structures within 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 works including removal and works to trees and groups of trees protected by a Tree Preservation Order; provision of permissive publicly accessible open space and grow gardens; provision of gated cycle and pedestrian access onto North Circular (A406) and new access onto Twyford Abbey Road; provision of hardstanding parking areas; ecological enhancement works; and other associated constructions works including installation of boundary treatment

Change of use of front of ground floor from General Industrial (Use Class B2) to Residential Dwelling (Use Class C3) and alterations to internal layout of ground and first floor levels to provide two self-contained flats; associated amenity, cycle parking and waste storage spaces; basement excavation to form a light well with glazed balustrade in forecourt; single-storey infill extension (following demolition of existing infill extension); alteration of roof from hip to gable end; roof extension to rear of main roofslope and over outrigger building; installation of door opening onto side elevation and two rooflights to front roofslope; and alterations to front and rear gardens involving landscaping and erection of boundary treatments.