Amendments to planning permission dated 6 September 2023 (23/04870/FULL) ) for conversion of ground floor garage to habitable accommodation and erection of mansard extension for use in connection with the existing first floor flat (Unit 8); and extension to the rear first floor to existing flat, Unit 2 [Site includes rear of 25-27 Catherine Place]; namely, amendment to the ground floor front window to provide a triple paned window.

Amendments to planning permission dated 17 August 2020 (RN: 19/07344/FULL (as amended by RNs: 21/03678/NMA and 21/05390/NMA)) for 'Demolition of existing rear extension, excavation of basement under property including front lightwell and vault, erection of a basement and ground floor rear extension, alterations to the ground floor front elevation in connection with conversion of property into one 3 bed unit and one 2 bed unit'. Namely, amendments to basement and ground floor layouts, and windows and doors in the rear yard and front lightwell at basement and ground floor levels.

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 23 November 2020 (RN: 20/05405/FULL) for the: Erection of single storey rear infill extension, and installation of two rooflights to rear roofslope in connection with the loft conversion. NAMELY, to allow the replacement of the existing timber sash windows with double glazed timber windows with glazing bars to match the existing, and replace the roof tiles to match the existing.

Amendments to planning permission dated 17th August 2020 (RN 19/07344/FULL) for the demolition of existing rear extension, excavation of basement under property including front lightwell and vault, erection of a basement and ground floor rear extension, alterations to the ground floor front elevation in connection with conversion of property into one 3 bed unit and one 2 bed unit. Namely, alterations to rear yard elevation to replace three windows with French doors at ground floor level, with juliet balconies and white painted render treatment to the ground and basement level walls.

Amendments to planning permission dated 17 August 2020 (RN: 19/07344/FULL) for the: Demolition of existing rear extension, excavation of basement under property including front lightwell and vault, erection of a basement and ground floor rear extension, alterations to the ground floor front elevation in connection with conversion of property into one 3 bed unit and one 2 bed unit. Namely, to allow changes to the rear yard windows and doors.

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.