Amendments to planning permission dated 20 June 2016 (RN: 15/10444) for: Variation of Condition 1 of planning permission dated 8 December 2011 (RN10/01741/FULL) for development of 55-91 Knightsbridge (including retention of Knightsbridge and William Place facades) to provide retail (Class A1) at basement and ground floor levels, office ( Class B1) at part ground, first, and second floor levels and residential flats at part ground, part first,part 2nd and 3rd to 5th floor levels. Off street servicing and new sub basement car park. Removal and replacement of existing tree on William Street. Demolition of 1-2 William Street and its replacement with a redesigned building with internal linkages to 55-91 Knightsbridge. Restoration and repair of external facades and roofs to 3-7 William Street including reinstatement of original roof profile at 4 William Street, conversion of 1st to 3rd floor levels of 3 and 4 William Street for residential purposes ( Class C3). Namely, the substitution of new drawings to allow minor material amendments comprising a revised number and mix of residential units; the provision of a terrace for a residential unit on the western end of the building; erection of a lift shaft to the rear of 4 William Street; alterations to shopfront of Nos. 3 - 4 William Street; extension at 4th floor level to the rear of Knightsbridge; and reconfiguration of the fenestration. Namely, amendment to the external air vent at 4 William Street.

Amendments to planning permission 15 November 2018 (RN: 18/03869/FULL) for Variation of Conditions 1, 3, 4, 6, 8, 9, 12, 17 and 30 of planning permission dated 22 February 2018 (RN: 16/12289/FULL) for: Demolition of existing buildings to the centre and eastern end of the site and redevelopment comprising erection of buildings of between six and 20 storeys in height to provide 335 residential units (Class C3), a hotel and serviced apartments (Class C1), offices (Class B1), gym (Class D2), retail (Class A1/A3) and a primary school (Class D1) with associated landscaping and open space, highways works, off street ground floor service bay and two storey basement to provide car, cycle and motorcycle parking and ancillary servicing space. NAMELY for the following changes ; 1, the replacement of one external window with a louvre on the on the south elevation, 2, amendments to the spandrel panels and glazing above the service yard entrance on the north elevation, 3, the replacement of glazing with spandrel panels on east elevation, 4, the introduction of louvred grills on the west elevation, alongside the variation of Condition 1: Approved Drawings.

Amendments to planning permission dated 21 October 2019 (RN: 18/04163) for: Variation of Conditions 1, 8,and original condition 24 and removal of Condition 10 of planning permission dated 23 February 2018 (RN: 16/11248) for Demolition of existing buildings on site and redevelopment to provide up to 30 residential units (Class C3), office floorspace (Class B1), gymnasium (Class D2), retail art gallery (Class A1), restaurant (Class A3) and retail (Class A1) floorspace; creation of a new pedestrian link through the site between Yarmouth Place and Carrington Street; erection of buildings either side of the new pedestrian link between 4 and 8 storeys in height excavation to create additional basement accommodation provision of on site car parking, cycle parking and delivery bay on Yarmouth Place new landscaping including improvement works to Yarmouth Place associated alterations; NAMELY to amend the approved drawings to changes to the party wall with 100 Piccadilly and increase the number of car parking spaces by (additional 44 spaces) within the development, and to change the wording of Condition 8 to allow the demolition and construction phases of the COCP to be submitted separately, and to allow the demolition clauses to be included in the S106 agreement. Further alterations received to reduce the size of the basement levels at 01-04; reduction in the size of the art gallery and gym; parking entrance reconfigured; Yarmouth Place elevation amended. Namely, various reconfigurations of cores, residential layouts, car lifts and flats, the realignment of the boundary walls and replacement of Condition 38 (waste storage).

Variation of Condition 1 of planning permission granted 11 June 2019 (RN: 18/09167), which itself varied condition 1 of planning permission dated 26 July 2018 (RN:18/09167) for: Alterations including 7th floor roof extension, alterations to office and retail entrances/shopfronts on Great Marlborough Street; reconfiguration of western lightwell elevation, installation of photovoltaic panels, green roofs, new extract ventilation duct and new plant enclosure at roof level and creation of office and residential terraces. Use of lower ground, part ground and part 1st to part 7th floors as offices (Class B1); use of part ground floor for dual/alternative retail (Class A1) or restaurant (Class A3) purposes; reconfiguration of existing flats and provision of one additional flat; use of basement to provide plant, cycle parking/showers waste storage and car parking (site includes 11 Ramillies Place). NAMELY, to allow replace approved revolving entrance door and single glazed door to the office entrance with a pair of glazed swing doors (double doors) to the reception area; replacement of the existing central first floor window to match the approved windows; and introduction of aluminium cladding to the entrances at ground and first floor level.