Amendment to planning permission dated 20 June 2016 (RN:15/10444/FULL) for the variation of Condition 1 of planning permission dated 8 December 2011 (RN:10/01741/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, variation of Condition 17 with substitution of a revised Energy Strategy.

Amendments to permission dated 28 July 2021 (RN: 20/05512/FULL) (which varied permissions dated 1 May 2019 RN: 18/09619/FULL, 1 February 2019 RN:18/00506/FULL and 29 April 2016 RN: 15/11404/FULL) for variation of conditions 1, 14 and 17 of permission dated 1 May 2019 (RN: 18/09619/FULL) (which varied permissions dated 1 February 2019 RN:18/00506/FULL and 29 April 2016 RN: 15/11404/FULL) for 'Demolition and redevelopment of the site to provide a residential complex comprising 39 units of self-contained assisted living accommodation integrated with facilities including communal kitchen-cafe, storage areas, wellness centre/spa, guest accommodation, staff accommodation, staff offices, in two linked buildings of six storeys each, internal courtyard, roof terrace, excavation to create basement storage and 38 car parking spaces with access from Horseferry Road. Namely, to allow amendments including removal of car parking stacking system, revised new basement floor layout, reduction in car parking spaces to 26, and provision of 5 electric charging points'. NAMELY, to amend the description of development to read as follows: 'Demolition and redevelopment of the site to provide a residential complex comprising 39 units of apartments integrated with facilities including communal kitchen cafe, storage areas, wellness centre/spa, staff accommodation, staff offices, in two linked buildings of six storeys each, internal courtyard, roof terrace, excavation to create basement storage and car parking spaces with access from Horseferry Road'.

Demolition of existing buildings and redevelopment to provide part 4, part 5 and part 6 storeys building and 2 basement levels for a mixed-use development comprising office floorspace (use Class B1a) at part ground and first to fifth floor levels with terraces at 3rd, 4th and 5th floor levels, 5 residential flats (4 x 2 bedroom flats and 1 x 3 bedrooms flat) with balconies (use Class C3) at first to third floor levels at the corner with Gillingham Row and retail floorspace (use Classes A1/A3) at ground and basement levels with associated works including installation of plant at roof level and alterations to public realm with hard and soft landscaping and the creation of loading bays.

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.