Variation of condition 1 of planning permission dated 8th March 2021 (RN 20/08269/FULL) for the insertion of 3 rooflights to the front roof and the construction of dormer to the rear roof and relocation of existing solar panels in connection with conversion of existing roof space into habitable accommodation; NAMELY, two panel door in the rear dormer; the installation of glass Juliet balustrade and the use of hanging slate to the dormer cheeks in lieu of standing seam lead (retrospective application).

Variation of Conditions 1 and 3 and removal of Condition 6 of planning permission dated 4 June 2019 (RN: 19/00040/FULL) for the erection of a mansard roof extension and two storey rear extension with terrace on top, replacement of windows fenestration, installation of recessed street-level doorway and new front door, all in connection with the conversion of the existing flat into three residential dwellings. NAMELY, amend the design of door to front elevation, to add waste/recycling storage in the third floor flat, and include details of windows, doors and railings.

Variation of condition 1 and omission of condition 4 of planning permission dated 02 May 2018 (RN: 17/10253/FULL) for the: Installation of new dormer extension and three rooflights to inner roof slopes in association with conversion of loft for additional residential accommodation for flat 8A. NAMELY, to allow replacement of roof dormer with a roof-light to lightwell elevation.

Variation of condition 1 and omission of conditions 4 and 5 of planning permission dated 02 May 2018 (RN: 17/10252/FULL) for the: Raising of roof ridge and installation of new extension to inner roof slope with two dormer windows, and installation of rooflight to inner roof slope in association with conversion of loft to form additional residential accommodation for flat 7A. NAMELY, to allow retention of the original slope of the roof and the replacement of dormers with roof-lights to lightwell elevation.

Variation of condition 1 of planning permission dated 11 February 2020 (RN 19/08445/FULL) for the excavation of single storey front and rear extensions at lower ground floor level and beneath the original main house footprint, erection of extension and infill of lightwell at second floor level, erection of mansard roof, installation of air conditioning units to roof level, conversion of garage into habitable space, replacement of ground floor French doors with sash windows and associated works. NAMELY, to vary the approved drawing numbers for the addition of a second floor lift extension to the rear of the building.

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.