Demolition of existing conservatory, the wall between the conservatory and kitchen and of the roof over the single storey rear extension; erection of a new single storey rear infill extension (matching the footprint of the existing conservatory), including new roof over whole of single storey rear extension; enlargement of the existing ground floor rear elevation kitchen window and installation of a white timber sash slimline double glazed window; installation of an aluminium casement window at ground floor (within the south facing wall) to serve the kitchen; replacement of the existing front elevation ground floor window (serving a W/C) with a new timber arched sash single glazed window; internal alterations including: Demolition of the internal partitions and raising of the floor level at first floor level within the existing extension; new fittings and finishes to the first floor bathroom, replacing the existing; enlargement of the existing loft hatch access; enlargement of the existing ground floor opening between the living room and conservatory; the blocking up of the existing doorway opening between the living room and the internal staircase at ground floor level; opening up of the ground floor fireplace (within the parlour room) and the installation of a new fireplace; enlargement of the existing hallway area, via the removal/alteration of existing internal wall; replacement of the existing kitchen boiler and the existing hall cupboard hot water cylinder with a single combination boiler in new, enlarged utility room; the replacement of existing (non-original) flooring and skirting with new engineered wood flooring with under floor heating; which will provide level access; new fittings and finishes to the kitchen and W/C. (amended description).

Erection of a single storey rear extension at ground floor level, following the demolition of existing rear extension, conservatory, outside WC and part of existing store; installation of a new single glazed timber window to the front elevation at ground floor level; internal alterations include conversion of existing first floor WC to a bathroom, enlargement of the opening between existing bathroom and dressing room at first floor level to create a bedroom, creation of a new bathroom at ground floor level, enlargement of the opening between the drawing room and dining room, enlargement of the opening between the dining room and conservatory; replacement of selected internal doors.

Demolition of the existing Rosalind Franklin Building (excluding boiler house arch and chimney) and erection of a new two storey Centre for Design and Innovation (CDI) adjacent to the retained boundary wall and new fencing to the rear of properties on Rowan Road; excavation to extend the CDI to the west; erection of a glazed link between the CDI and the Mercers Building to the south; refurbishment of the Mercers Building including removal of the fire escape stair and introduction of new overhead door; demolition of the existing Forum Building (excluding screen to science courtyard) and erection of a new three storey Staff Hub and link with the Main Building; enclosure of spaces between the Main Building and the Staff Hub and CDI buildings by erection of covered links; installation of solar photovoltaic panels and replacement of existing plant screen to the roof of the Celia Johnson building; landscaping of the car park including changes to the entrance gates and the erection of a new single storey maintenance building in the southeast corner of the car park; reconfiguration of some spaces in the Main Building over lower ground, upper ground and first floor for administration spaces, meeting spaces, pastoral spaces and toilet and locker space; landscaping works to the science courtyard and other associated works.

Alterations and extensions to the Grade II listed building including the demolition of the summer house, erection of a part-one, part-two and part-three storey extension and excavation of a basement beneath the extension, in connection with the use of the site as a 32-bedroom nursing home (Use Class C2) together with the demolition and replacement of front and side boundary walls, and means of access to the highway on Daisy Lane.

Erection of a single storey rear extension and erection of a single storey extension to the side of the main building at lower ground floor level following the demolition of the existing garage and part of the single storey back addition; installation of balustrade to existing French doors in rear elevation at upper ground floor level; installation of new steps in front driveway area; amendments to rear landscaping and steps in the rear garden; alterations to the front gates and railings to provide a larger vehicular access; lowering of lower ground floor level; and associated internal and external alterations.

Internal alterations at lower ground floor include: the demolition of boiler room, rear wall and external stairs to facilitate the erection of a rear extension; renewal of gas and electric store cupboards re-arrangement of lower ground floor including the installation of a new kitchen, heating system, and wall insulation, minor alteration to fireplace; installation of lower ground floor doorway below entrance door; Internal works at ground floor level include: re-instatement of fireplaces and interior panelling, removal of radiators, renewal of cupboard; Internal works at first floor level include: the re-arrangement of the existing front room to accommodate a bathroom and dressing room, including the re-hanging of the entrance door, insertion of a new access from landing area to existing bathroom, reinstatement of fireplaces and removal of cupboards; Internal alterations at second floor level include: demolition of modern partition walls and bathroom within the rear room to create larger bedroom, increased size of loft hatch, installation of a bathroom with the utility room on the landing; associated internal alterations and re-arrangements; External alterations to include erection of a single storey rear extension to the main building at lower ground floor level, including the demolition of the rear wall, boiler room and external stairs, and retaining garden wall; erection of an external staircase from lower ground floor level to ground floor level in the rear garden; excavation of the front garden to reinstate the original front lightwell, and remedial works to all doors and windows and to the front boundary brick wall, including the installation of raised brick pillars and a larger wrought iron gate and lantern.

Demolition of existing mews garages and the erection replacement part two storey, part three storey plus-basement building to provide 2 x single family dwellinghouses with roof terraces at second floor levels, including a three storey vehicle parking stacker serving Northumberland House.

Demolition of existing single storey greenhouse and shed; erection of a single storey outbuilding in the rear garden to use as an artist studio.

Partial demolition of the 5 storey rear back additions, erection of a replacement part four-storey (double height ground floor with three floors above) and part single storey rear extension; installation of a new Juliet balcony at first floor level to the rear elevation; internal alterations to include: lowering the floor level of the lower ground floor and upper ground floor to rear part of the building, extend the existing living/dining room to match the new rear extension at upper ground floor level, removal of wall between the proposed study areas at first floor level, increase opening between children's bedroom and lounge, remove modern partition between hallway and bedroom, remove and rebuild partition between en-suite bathroom and bedroom, and creation of new opening between landing and en-suite bathroom at second floor level, creation of new opening between bedroom and office, new opening to master bedroom and re-instatement of wall in master bedroom at third floor level, and formation of a new bathroom at fourth floor level; associated internal and external alterations.