Demolition of a 2-storey rear wing, the erection of a single storey rear extension, the erection of a mansard roof extension, external alterations to the front and rear elevations, conversion of part of the betting office on ground and basement floor levels and renovation of a disused residential area at basement level to create 4 self-contained flats (use class C3) and retention of part of betting office (use class sui generis).

Works at 89 Boundary Road to include use of part lower ground and part ground floors as a residential flat (Class C3) and office (Class E), and first, second and third floor as 2 residential flats (Class C3); Erection of rear extensions at lower ground and ground floor levels with associated terrace at first floor level; Erection of mansard roof extension, alterations to windows and doors; and works to 87 Boundary Road to include demolition of existing rear extension and erection of mews house at rear of site, reduced office space; erection of a mansard roof; Conversion of maisonette at first and second floor into two flats with additional accommodation at roof level; and use of the lower ground and ground floor as office (Class E).

Variation of Conditions 1 and 10 and removal of Conditions 8 and 9 of planning permission dated 26th September 2016 (RN: 15/05936/FULL) for the: demolition of existing office building and redevelopment to provide a replacement building over two basement levels, lower ground, ground and eight upper levels. Use of the building for residential purposes (Class C3) providing a maximum of 23 flats including 14 car parking spaces at basement level, accessed from Buckingham Gate. Namely, to extend the internal usable space at basement level 2 and reconfiguration of basement 1 without increasing the approved extent of foundations, internal alterations, amendments to window layouts at levels 7 and 8; and to vary the wording of Condition 10 to approve updated Sustainability and Energy Strategy and remove Conditions 8 (uninterrupted demolition and construction) and 9 (installation of PV panels on roof).

Variation of Condition 1 of planning permission dated 06 December 2017 (RN: 17/05944/FULL) for erection of a rear and roof extensions including partial demolition to provide additional Class B1 office floor space and residential apartment (Class C3), and dual/alternative use of part basement and part ground floor as a retail shop (Class A1) or restaurant (Class A3). NAMELY, to enable the use of part fourth floor as residential accommodation (Class C3).

Demolition of existing rear extension and erection of mews house at rear of site reduced office space; conversion of maisonette at first and second floor into two flats; Use of the lower ground and ground floor as office (Class E)

Amendments to planning permission dated 25 September 2016 (RN: 15/05936/FULL) for variation of Condition 1 of planning permission dated 15 April 2015 (RN: 14/06964) for the demolition of existing office building and redevelopment to provide a replacement building over two basement levels, lower ground, ground and eight upper levels. Use of the building for residential purposes (Class C3) providing a maximum of 24 flats including 14 car parking spaces at basement level, accessed from Buckingham Gate NAMELY, to extend the level 2 basement, rationalise plant areas and reconfigure residential and non-residential uses from basement to first floor level.

Variation of Condition 19 of planning permission dated 6 December 2017 (RN: 17/05944/FULL) for, 'Erection of a rear and roof extensions including partial demolition to provide additional Class B1 office floor space and residential apartment (Class C3), and dual/alternative use of part basement and part ground floor as a retail shop (Class A1) or restaurant (Class A3)'; NAMELY, to extend the hours within which customers are permitted within the restaurant premises from the approved 00.00 to 01.00 on Monday to Saturday (Sundays remained unchanged). (Application under Section 73 of the Act).

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.