Variation of condition 1, 6 and 13 and removal of condition 8 and 18 of planning permission dated 11th September 2019 (RN 19/03450/FULL) for the refurbishment and extension of existing building to provide additional B1 (office) floorspace, use of ground floor for retail (Class A1) purposes and Class A3 (cafe/restaurant) purposes and gym (Class D2) at basement level; terraced infilling of central courtyard, creation of roof terraces together with green roofs; reconfiguration and provision of additional plant accommodation at basement and roof level; replacement windows and new entrances together with new shopfronts; new layout at ground level for accessible parking and refuse store; cycle parking and showers and servicing at basement level. NAMELY, to amend the approved drawings to reflect design and technical development changes post planning permission, including alterations to proposed roof plant, removal of green walls and retention and refurbishment of pentagon roof.

Variation of Condition 1 of planning permission dated 8 October 2019 (RN: 19/06149/FULL), as amended by non-material amendment dated 28 July 2020 (RN: 20/02998/NMA), for external alterations to the St James's Square and Pall Mall facades, including alterations to windows and entrances, new entrance from Pall Mall and cleaning of brickwork; erection of roof extension to incorporate lift overrun, roof access, concealed open plant area and new plant; and dual/ alternative use of part of the ground and basement levels as either office (Class B1) or retail (Class A1); and associated works. NAMELY to allow amendments including the inclusion of the planter and louvre located adjacent to the building along St James's Square and reconfiguration of the ventilation strategy/ vent above the St James's Square facade central bay window at level 6.

Amendments to planning permission dated 24 February 2020 (RN: 19/00529/FULL) for redevelopment of Pegasus House and Nuffield House including demolition behind a retained facade (west, south and east) of Nuffield House and replacement building comprising 2 level basement, ground, mezzanine and first to seventh floor and demolition and replacement of Pegasus House comprising 2 level basement, ground, mezzanine and first to fifth floors; amalgamation of the two buildings to provide new office (Class B1), retail (Class A1), restaurant (Class A3), flexible office / retail (Class B1 / A1), and residential accommodation (Class C3); and other associated works, NAMELY, to amend the shopfronts and ground floor level entrances, rearrangement of reception spaces, Sackville historic façade review and alignment, UKPN ventilation and access update, lift overrun and Nuffield house roof massing, rear façade updates, roof plant enclosure and proposed chimney, sub-basement reduction and retained facade timber window replacement

Variation of condition 1 of listed building consent dated 5 March 2020 (RN 19/00530/LBC) for the Redevelopment of Pegasus House and Nuffield House including demolition behind a retained facade (west, south and east) of Nuffield House and replacement building comprising 2 level basement, ground, mezzanine and first to seventh floor and demolition and replacement of Pegasus House comprising 2 level basement, ground, mezzanine and first to fifth floors; amalgamation of the two buildings to provide new office (Class B1), retail (Class A1), restaurant (Class A3), flexible office / retail (Class B1 / A1), and residential accommodation (Class C3); and other associated works from RN 19/00530/LBC, NAMELY, to include the following changes: amend the design of the shopfronts and ground floor level entrances, rearrangement of reception spaces, alteration to lift overrun and Nuffield house roof massing and window replacement.

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 3 March 2020 (RN 19/09981/LBC) for the Variation of condition 1 of listed building consent dated 20 February 2016 (RN: 15/10446/LBC) for the: Development of 55-59 Knightsbridge (including retention of Knightsbridge facades, demolition and the dismantling and reinstatement of roofs and chimneys) to provide retail (Class A1) at basement and ground floor levels and 18 residential flats at first, part second floor and third to fifth floor levels. Demolition of 1-2 William Street and its replacement with a redesigned building with internal linkages to 55-91 Knightsbridge. Namely, to allow alterations to William Street Residential Entrances, door to Wilton Place, fenestration changes to rear facade, increased lift Shaft to rear face of William Street, merlons to west elevation, West façade end bay reconstructed, chimneys to coping stone detail in mansard, pavilion gable apex roof stones, ridge height of mansard roofs, projecting signs to shopfronts, retained parapet to no. 55 Wilton Place, general layout alterations, and associated works from RN 19/09981/LBC, NAMELY, to vary the approved drawing numbers to amend the design of the external vent at no. 4 William Street and the removal of a ceiling at third floor level.

Amendments to planning permission dated 18 April 2016 (RN: 11/10055) for: 1) Use of void areas within station building at basement, ground and mezzanine floors fronting onto Oxford Street for retail purposes, and erection of a building comprising first and six upper floors with roof top plant to the north of Fareham Street for use as 69 flats (Site C). 2) Use of ground floor void area fronting onto Dean Street and Fareham Street for retail purposes and erection of a building comprising first and five upper floors with roof top plant to the south of Fareham Street for use as 23 flats (Site D) NAMELY, amendment to Block C parapet heights and provision of inward openable windows; and on Blocks C and D the removal of the building maintenance unit and installation of a rooftop generator to approved under planning permission Ref. 20/00345/NMA.

Amendments to planning permission dated 23 March 2018 (RN: 17/08716/FULL) for Variation of condition 1 and removal of condition 33 and 34 of planning permission dated 20 April 2016 (RN: 15/06448) for the 'Demolition of all existing buildings and comprehensive redevelopment to provide a mixed use development accommodated in a single building arranged around a central courtyard of lower ground, ground, eight upper floors, rooftop plant and basements. Use of new building for hotel comprising up to 190 guest rooms, restaurants/bars, ballroom, function rooms, hotel leisure/spa facilities, ancillary and back of house spaces (Class C1), 24-28 residential dwellings including ancillary residential leisure and amenity facilities (Class C3) and retail (Class A1), car and cycle parking with access from Grosvenor Crescent and Halkin Street, refuse, delivery and circulation spaces within basements and other associated works. (Site includes Yorkshire House, Grosvenor Crescent, 3, 4, 5 and 8 Pembroke Close and 12 Halkin Street London SW1)'. NAMELY, to amend the approved drawing numbers to allow design changes to all building facades and internal alterations to the design of the building, installation of a Building Maintenance Unit at roof level and alterations to the roof parapet line, NAMELY, to make changes to the south-west building elevation facing Forbes House, specifically in relation to the approved windows and their layout on the southern part of the site and to add an additional condition (38) to the planning permisison: "You must carry out the development in accordance with the approved Design Amendment Statement Ref: 1GP-HAP-XX-XX-RP-AR-0096 insofar as it relates to the approved windows and their layout on the southern part of the elevation and maintain it in accordance with this Design Amendment Statement in perpetuity thereafter."

Amendments to planning permission dated 1 September 2014 (RN: 14/02566/FULL) for: Variation of Condition 1 of planning permission dated 04.09.13 (RN: 12/12041) for external alterations and extensions including rebuilding of existing 7th and 8th floor levels, installation of photo-voltaic cells, green roof & plant at roof level, alterations to street facades and rebuilding of rear facades (with new balconies on Smith Court and Piccadilly Theatre frontages, and roof terraces at eight floor level on all frontages), provision of 38 dwellings at 4th-8th floors, with new residential entrance to Sherwood Street, use of second and third floor as offices (Class B1), reconfiguration of existing uses at basement, ground and first floor levels at 12/13 Sherwood Street and 63-75 Brewer Street to provide 2 No. retail (Class A1) units and altered health club (Class D2) layout with new health club entrance on Brewer Street - to allow minor amendments to the approved scheme including: changes to the steel window design on the street facing facades; alterations to the aluminium window design on the rear facades; installation of ventilation grilles in the windows at 3rd-7th floor levels on the Sherwood Street and Brewer Street elevations; alterations to the flank/party wall on Brewer Street; changes to the roof layout and massing; AND removal of Condition 3(2) (requiring detailed drawings of new windows): NAMELY, to amend energy and sustainability strategies to facilitate the removal of a trigeneration system forming part of the central plant within The Crown Estate's Quadrant development and amend the wording of condition 20 accordingly.

Amendments to planning permission dated 14 February 2020 (RN: 19/04422/FULL) for "Ground plus 14 storey extension along Bressenden Place to provide Class B1 (office) accommodation and Class A1 (retail) accommodation at ground floor. Use of Level 28 and new pavilion extension at main roof level for restaurant and bar (sui generis) use. The installation of two external lifts on the northern elevation of the building. Works to the existing building façade, including the replacement of the treatment of the top of the building, the replacement of the existing windows and the cleaning of the existing façade and associated works. The reconfiguration of the existing ground and first floor to provide Class A3 (restaurant) accommodation, the provision of a flexible Class A1/A3 (retail/restaurant) unit at ground floor, the use of the basement for Class A3, Class B1 (office), flexible Class A1/A3/D2 (retail/restaurant/gym). Removal of part of the existing canopy, works to the public realm, the provision of cycle parking spaces and associated works", namely to amend the description of development into "Ground plus 14 storey extension along Bressenden Place to provide Class B1 (office) accommodation and Class A1 (retail) accommodation at ground floor. Use of Level 28 and new pavilion extension at main roof level for restaurant and bar (sui generis) use. Works to the existing building façade, including the replacement of the treatment of the top of the building, the replacement of the existing windows and the cleaning of the existing façade and associated works. The reconfiguration of the existing ground and first floor to provide Class A3 (restaurant) accommodation, the provision of a flexible Class A1/A3 (retail/restaurant) unit at ground floor, the use of the basement for Class A3, Class B1 (office), flexible Class A1/A3/D2 (retail/restaurant/gym). Removal of part of the existing canopy, works to the public realm, the provision of cycle parking spaces and associated works."