Variation of Conditions 1 and 6 of planning permission dated 30 November 2016 (RN: 16/04562) for demolition and reconstruction behind a retained front facade of 41, 43, 57, 59 and 63 Pimlico Road including the realignment of the rear elevation, the installation of new roof structures to match the existing, and the creation of external terraces; demolition of 61 Pimlico Road (the element directly fronting onto Pimlico Road) and construction of infill accommodation at ground, first, second and third floors; replacement of shopfronts to 41, 43, 57, 59 and 63 Pimlico Road; retention and sub-division of the builders' yard at 61 Pimlico Road (behind the frontage to Pimlico Road), installation of a partial mezzanine floor and creation of lateral connections at ground floor level to 41, 43, 57 and 59 Pimlico Road; replacement of the builders' yard glazed roof lantern; creation of roof level plant enclosure above part of the builders' yard; creation of four Class A1 retail units at basement, ground and mezzanine level, with seven Class C3 residential dwellings at the first, second and third floor levels (with ground floor access); sub-surface excavation including lowering of ground floor slabs and the creation of additional basement accommodation; together with other external alterations; Namely, to create a new publicly accessible retail arcade and associated amendments to internal retail layouts and elevational works on Pimlico Road, enlargement of the basement, amendments to the roof to provide additional glazing and acoustic louvres, internal residential layout amendments, amendments to the wording of condition 6 to allow ancillary Class A1 food and beverage provision, and associated works.

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.