Variation of Condition 21 of planning permission dated 28 March 2017 (RN: 14/11804/FULL) for 'Use of the fire station as a 26 bed hotel (Class C1). Demolition of part of the existing building at the rear, including demolition of enclosures in the ground floor and basement courtyards and demolition of the steel practice tower. Erection of a part three and five-storey wing to main building. Excavation of courtyard to create basement level accommodation, including plant room. Rear extensions to main building. External and internal alterations; namely minor internal alterations at ground to third floor, alterations to glazing at basement to third floor, raising parapet wall at ground and first floor (south elevation), addition of rooflight at 1st floor, double glazed windows within doors to terrace at 2nd floor, repositioned roof access hatch at fourth floor (roof), flue at roof level within recessed dormers (north west corner), omission of louvered roof grill, window cill droped to create doors at basement and ground floor'; NAMELY, to enable the courtyard for outside dining/drinking between the hours of 09:00 and 22:00 each day for a temporary period until 30 September 2021.

Variation of condition 1 of planning permission dated 01 February 2021 (RN: 20/06029/FULL) for the: Demolition of existing conservatory, erection of single storey rear extension, replacement of roof structure, extension and alterations to rear closet wing including incorporation of lift, replacement windows, alterations to the front boundary and front forecourt including extension and alterations to front vaults, excavation of new basement level including alterations to landscaping, plant enclosure and garden and bike stores to rear garden, and associated alterations. NAMELY, to allow the installation of an external staircase to the west side passage providing access from ground floor level at the front to the lower ground floor level at the rear, new bin store to lower ground floor level lightwell, and the provision of a covered terrace on the rear elevation 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.

Variation of Condition 1 of planning permission dated 01 March 2018 (RN: 17/09342/FULL) as amended by a non material amendment dated 18 May 2020 (RN/20/03063) for, 'Demolition including the existing fourth floor, roof above and partial demolition of rear wall. External alterations including the erection of a replacement fourth floor with an additional single storey mansard storey at fifth floor level above; erection of an extension to the rear to new fifth floor level to provide an additional seven bedrooms for use in connection with the existing hotel (Class C1); extension to existing lift shaft with overrun and creation of new lift shaft with an overrun at new roof level; creation of a new green roof; relocation of existing roof plant within enclosures in two locations at fourth and fifth floor levels. reinstatement of Juliet balconies at first floor level and the erection of a new portico at ground floor level along the Clarges Street frontage. Internal alterations at all levels throughout and associated works (Site includes 39-42 Clarges Street)'; NAMELY, to allow the reconstruction of the rear wall of no. 7 Half Moon Street and the reconstruction and extension of the rear wall of no. 8 Half Moon Street; removal of a closet wing wall at the rear of no. 10 Half Moon Street closest wing wall to facilitate a larger, more accessible lift lobby and associated removal of an adjacent window; rebuilding and straightening of a corridor on the first and second floor of nos. 7 and 8 Half Moon Street; and associated works.

Variation of listed building consent dated 21.12.18 (RN 18/08464/LBC) for the Variation of Conditions 1 and 10 of listed building consent dated 29 May 2018 (RN: 18/01318) for, 'Use as six self-contained flats (Class C3) including demolition of existing rear extensions and erection of new extension over lower-ground and ground-floor, excavation of rear garden and vault at lower ground floor level. Installation of internal lift to serve second to fourth floors, internal alterations, replacement windows, alterations to facade, provision of rooftop plant and a condenser unit within an acoustic enclosure within the rear patio at lower ground floor level and condenser in front lightwell and landscaping, NAMELY Removal of condition 3F (requiring the submission of details of the pipe and cable routes for the second floor sprinkler system).

Variation of Condition 1 of planning permission dated 29 April 2019 (RN: 17/09802) for 'Demolition of mews building and lower ground and ground floor rear extensions. Erection of replacement mews building on lower, ground and first floors to provide a four bedroom dwellinghouse (Class C3), accessed from Wigmore Place. Erection of replacement lower ground and ground floor levels rear extension to the main building and use of lower ground, ground floor and first to fourth floors as 11 x flats (Class C3). Alterations to rear elevation including the installation of new windows (Land Use Swap with 60 Wimpole Street 17/09804/FULL); NAMELY new timber windows and alterations to plant.

Variation of Condition 4 of panning permission dated 16 July 2018 (RN: 18/03829) for, 'Demolition behind retained front facade of No.36 and No.94, including the demolition of existing rear basement and ground extensions and roofs to Nos.36-40. Minor excavation to the rear of Nos. 36-40, and rebuilding to provide part four and part five storey (above ground) buildings at No.36 and No.94. Erection of mansard roof to Nos. 38-40 in connection with the use of part of basement and ground for either retail (Class A1) or restaurant (Class A3) and the use of the remaining buildings as 17 residential units. Associated external alterations including rear terrace at first, second, fourth and roof level. New windows and plant'; NAMELY, to allow amendments to allow customer access between 07.30 - 00.00 (Monday to Saturday) and between 09.00 - 22.00 on Sundays.