Amendments to planning permission dated 19 April 2021 (RN: 20/04541/FULL) for Erection of an extension at the rear of 18-22 Wigmore Street at first to fourth floor levels and alterations to the rear roof form to allow conversion of the attic space to provide additional residential floorspace for the existing flats (Class C3), including the infilling of an internal lightwell adjacent to 16 Wigmore Street and the installation of a new lift. Alterations at basement and ground floor level including the infilling of a rear lightwell at basement and ground floor levels. Installation of plant within an associated enclosure at rear first floor level with a green roof over and screened plant on a flat roof at fourth floor level to the rear of 22 Wigmore Street. Alterations to the front of the building including new windows, shopfronts and metal railings at ground floor level. All in connection with the dual / alternative use of the basement, ground and first floors as either office (B1) / retail (A1) or a sui generis use comprising piano showroom, office space, new recital room, piano practice rooms and workshop space and use of the second to new fifth floors as 8 residential units comprising 3 x 1 bed; 4 x 2 bed and 1 x 3 bed. (SITE INCLUDES 18, 20 AND 22 WIGMORE STREET). NAMELY, consisting of the provision of new door height railing gates to the main entrance, new openable railing gates to the eastern side of the main entrance, and insertion of French doors to the eastern ground floor shopfront.

Amendments to planning permission dated 07th April 2021 (RN:21/00366/FULL) for Removal of condition 12 of planning permission dated 01 May 2020 (RN: 20/01459) which itself varied condition 1 of planning permission dated 12 February 2013 (RN: 12/12483)for the: internal and external alterations (comprising new windows at roof level, lift overrun green roof skylight, removal of lightwell insertion of new doors at lower ground floor level and creation of roof terrace at rear ground floor level) in connection with the conversion of the existing building from office and residential flats into a single family dwelling to vary the approved drawing numbers to allow the introduction of an additional roof light to the north east of the roof, a replacement walk on roof light to the west of the roof and an extension to the lift overrun box, set into the existing area of flat roof and plant access. Namely, the lift over run box is to be in toughened clear glass.

Amendments to planning permission 23rd February 2022 (RN: 21/07541/FULL) for, 'Erection of infill extension at basement level in order to enlarge existing office (Class B1), use of part ground floor on Mount Street elevation as a shop (Class A1) accessed from existing bay, erection of roof extension to enlarge existing flat (Class C3), insertion of new windows and doors on the north and east elevations, creation of a residential terraces at third floor level and provision of plant within existing vaults'; NAMELY, to enable internal layout changes to lower ground floor offices, ground floor office and residential entrance and flats 1, 2, 3 and 4.

Amendments to planning permission dated 23 February 2022 (Ref: 21/06850/FULL) 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, proposed standby generator exhaust flue to serve the life safety back-up generator located in the basement and residential satellite and TV aerial to serve the residential flats.

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.

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.