Amendments to planning permission dated 20 July 2021 (RN: 20/07187/FULL) for demolition of existing property and erection of a five-storey building (with basement level) incorporating a lightwell to the Elgin Avenue frontage and plant at roof level to provide a commercial unit at ground and basement and residential dwellings at basement, ground and upper levels.; NAMELY, improved layout of residential units; incorporation of unit F3, F5 and F7 balcony space into internal space; reduction of unit F8 amenity space; relocation of staircase and lift shaft; amendments to windows and doors; reduction of size and reconfiguration of basement level commercial space; reconfiguration of ground floor commercial space; circular staircase for fire escape from basement level; reduction of floor-to-floor heights at all levels; reduction in roof footprint and plant reconfiguration; increase of window dormer cheeks and roof thickness; introduction of smoke shaft and other services for fire and building regulations.

Amendments to planning permission dated 19 April 2021 (RN: 20/08120/COFUL) for variation of condition 1 of planning permission dated 29 March 2019 (RN: 17/11404/COFUL) for the demolition of existing buildings and structures and erection of new building of up to five storeys plus basement floor to provide 49 residential units (Class C3); with car and cycle parking, storage and plant rooms at basement level and landscaping to central garden and site frontages and associated works from RN: 17/11404/COFUL, namely, to vary the approved drawing numbers to amend the design of the building facade depth to reduce the depth of the brick reveal; NAMELY, alteration to plant & location of access hatches/AOV to roof including boiler flue; basement ventilation penthouse louvres added; PV panels updated to specialist design; minor amendments to main entrance doors; minor amendments to courtyard doors; location of bike stand updated to approved planning application; car lift door design updated to specialist design; bike/Bin lift lobby doors amended to specialist design; generator room door updated to specialist design; unit 4.04 layout includes L-shaped corridor to fire engineers guidance; and unit 4.04 Window amended.

Amendments to planning permission dated 27 March 2019 (RN: 17/02394/FULL) for alterations and extensions, including demolition and reconstruction of rear extensions, excavation of basement floor, removal of tree, alterations to front boundary wall, installation of mechanical plant, erection of cupola at roof level, use of part of garden to rear of No.8 Ordnance Hill, and internal works to all floor levels in connection with the use of the building as five residential apartments (2x3 bed, 2x2 bed, and 1x1 bed flats); namely, the insertion of a new sash window to match the existing windows in the East elevation of the original chapel building; the introduction of powder coated aluminium windows within the new rear block, providing a consistent design approach within this new part of the building, and allowing an enhanced environmental performance to be achieved; and the simplification of the façade treatment of this new part of the building, (simplified cornice detailing, omission of window surround detail)

Amendments to planning permission dated 28th July 2020 (RN:19/07659/COFUL) for Development of existing western car park for the erection of a five storey block providing nineteen Class C3 residential units, demolition of existing storage sheds to west of site to provide four three storey Class C3 dwellings, amenity space, refuse storage, cycle parking, and estate works including the realignment of Droop Street; reconfiguration of the existing central car park, and erection of a replacement boundary wall to the existing nursery. Amendments to planning permission dated 28th July 2020 (RN:19/07659/COFUL) for Development of existing western car park for the erection of a five storey block providing nineteen Class C3 residential units, demolition of existing storage sheds to west of site to provide four three storey Class C3 dwellings, amenity space, refuse storage, cycle parking, and estate works including the realignment of Droop Street; reconfiguration of the existing central car park, and erection of a replacement boundary wall to the existing nursery. Namely, refuse store door on west elevation at ground floor to become louvred door; Air bricks to be added on all elevations; Four gates removed from landscaping design; Replacement of one of first floor windows in east elevation of townhouses with blind window; Alterations to layout of roof photovoltaic panels; External door added to the East Elevation to cycle store; and window omitted to West elevation at ground floor.

Amendments to planning permission dated 3rd February 2022 (RN:21/08237/FULL) for Demolition of the existing conservatory, erection of a rear extension and the infilling of two light wells in connection with the use of the ground floor and basement as a restaurant (Class E). Alterations to front entrances and replacement of existing shopfront. Alterations to rear elevation including fenestration and at roof level in connection with use of the upper floors as three self-contained C3 residential units each with private external amenity areas including a roof terrace together with associated plant and landscaping (site includes 77 Marylebone Lane). Namely, to alter the 3rd floor arrangement and location for access to the roof terrace in order to comply with building regulation requirements for clear access via the staircase that was previously approved.

Amendments to planning permission dated 19th July 2018 (RN: 18/02233/FULL) for, 'Demolition of rear facade of Nos. 96-98 Baker Street and front and part rear facades of No. 14 Sherlock Mews, use of first to fourth floors of Nos. 96-98 Baker Street as eight residential flats (Class C3), amalgamation of flats at first and second floors of No. 14 Sherlock Mews into a maisonette (Class C3), erection of replacement shopfronts to Baker Street facade, erection of replacement rear facade to Nos. 96-98 Baker Street, erection of replacement front facade to No. 14 Sherlock Mews, alterations at roof level, and other associated external alterations'; NAMELY; (i) Amendment to the main door of the residential entrance to the building at the Baker Street front elevation; (ii) Amendment to the material finish of the residential entrance to the building at the Baker Street front elevation; (iii) Internal layout changes to 1st - 4th floor flats at 96-98 Baker Street; (iv) Reconfigured exhaust shaft for theatre at 1st floor terrace to the Baker Street rear elevation; (v) Modification to bedroom windows on the rear elevation of 96-98 Baker Street to accommodate exhaust shaft for theatre; (vi) Revised location of access hatch to roof; (vii) Reduced area for clerestory pop-up at Baker Street rear elevation; (viii) Addition of a guard rail at roof level; and (ix) Introduction of external pipework to the rear elevation of 96-98 Baker Street.

Amendments to planning permission dated 19 July 2018 (RN:18/02233/FULL) for, 'Demolition of rear facade of Nos. 96-98 Baker Street and front and part rear facades of No. 14 Sherlock Mews, use of first to fourth floors of Nos. 96-98 Baker Street as eight residential flats (Class C3), amalgamation of flats at first and second floors of No. 14 Sherlock Mews into a maisonette (Class C3), erection of replacement shopfronts to Baker Street facade, erection of replacement rear facade to Nos. 96-98 Baker Street, erection of replacement front facade to No. 14 Sherlock Mews, alterations at roof level, and other associated external alterations'; NAMELY, (i) To allow reconfiguration of the existing garage and 14 Sherlock Mews entrance at ground floor, including the replacement of all doors at ground floor with a unified design and appearance; (ii) Reconfiguration of the internal layouts of 14 Sherlock Mews to at first and second floor levels; (iii) Unify the 14 Sherlock Mews elevation in brickwork of a consistent colour, bonding and character; (iv) Replacement of design of Sherlock Mews windows; and (v) Refurbishments to the front facade of the mews house; and associated works.

Amendments to planning permission dated 16 March 2020 (RN: 19/03844/FULL) for which itself varied of condition 1 of planning permission dated 21 December 2017 (RN: 17/00938/FULL) which itself varied Condition 2 of planning permission dated 2 November 2003 (RN: 02/06302/FULL) for the: Demolition of existing buildings and erection of residential building of 6-8 storeys comprising 66 apartments including 17 affordable units and provision of 64 parking spaces in two basements. Namely, to allow the addition of mechanical ventilation and sprinklers at basement levels; smoke extraction and sprinklers within the communal corridors at the upper levels; increase in floor to ceiling heights to 2.6 metres; lowering of the central ground floor slab; disabled access lift added to the ground floor entrances; introduction of escape windows to ground floor apartments; reduction in the floor areas of units 007 and 008; inclusion of photovoltaic panels at sixth and seventh floor roof level; and removal of seventh floor mezzanine, NAMELY, to attach an additional condition (condition no. 25) listing the approved plans and documents.

Amendments to planning permission dated 29th March 2019 (RN 17/11404/COFUL) for the demolition of existing buildings and structures and erection of new building of up to five storeys plus basement floor to provide 49 residential units (Class C3); with car and cycle parking, storage and plant rooms at basement level and landscaping to central garden and site frontages and associated works. NAMELY, to reconfigure the basement layout to provide increased water attenuation tank volume; replacement of clear glass window with obscurely glazed window in the Unit 4.04 bathroom following reconfiguration of internal layout; composite Bi-fold doors and windows replaced with aluminium French doors and windows; reduced external brick wall and concrete thickness; and at roof level, a reduction in green roof cover and skylight locations updated to reflect internal layouts.

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.