Amendments to planning permission dated 01 March 2012 (RN:11/11498/FULL) for use of part ground and upper floors as a single dwelling house (Class C3). Demolition of part of the existing two storey rear extension at ground and first floor level to create an open patio area. Construction of rear extension at second floor level. Removal of part of the existing roof and attic space to create a roof terrace and rooflight and screen to front elevation. Alterations to front and rear elevation windows and doors. Namely, repositioning balustrade and flank wall extended.

Amendments to planning permission dated 26 July 2019 (RN:19/03428/FULL) for the demolition of existing dwellinghouse and erection of new four storey dwellinghouse (Class C3) comprising a basement floor extending under part of the front and rear gardens, ground and two upper floors, and associated external alterations, including replacement of front boundary wall. Namely, minor repositioning of windows; repositioning of the side entrance door and change to style of door; Dormer window sizes reduced; Rear ground floor doors combined with windows and brick piers removed; Design of front portico simplified to be more in keeping with the house; Parapet detail amended; Alterations to chimney, height and capping; Reduction in size of rooflights to ground floor single storey rooms; Splitting up of the rooftop courtyard glazing; Alteration to basement lightwell configuration; Glazed metal door and security gates added and lowering of basement window cills; 5mm increase in height to a side extension; change in eaves height to main roof.

Amendments to planning permission dated 15th December 2021 (RN:20/03623/FULL) for amalgamation of two maisonettes to create a single dwelling house [Class C3], excavation beneath the footprint of the existing building and excavation of part of rear garden at lower ground floor level. Demolition of the existing extension to the rear and construction of a new lower ground and ground floor rear extension. Repair work to the facade, alteration to street frontage in line with the street and landscaping to the rear garden. Installation of acoustically attenuated condenser to the rear garden. Namely, to amend the wording of Condition 16 (Contaminated Land) to allow radon monitoring to occur 'after' occupation.

Amendments to planning permission dated 23 October 2020 (RN:19/09638/FULL) for demolition of existing community centre (Use Class D1) and nursery (Use Class D1) buildings and associated structures and replacement with three blocks (Blocks A, B and C) to create residential dwellings (Use Class C3), office floorspace (Use Class B1), cafe (Use Class A1), replacement community space (Use Class D1) and replacement nursery (Use Class D1). Landscaping and public realm alterations (including to the base of Wilmcote House); provision of car parking and cycle parking, refuse storage; provision of new boundary treatment; alterations to services; plant and associated works. Namely, decentralised water source heat pumps (WSHPs) will be located in each apartment and connected to the ambient loop.

Amendments to planning permission 8th April 2022 (RN: 21/02583/FULL) for the Demolition of the existing dwelling house and erection of a replacement dwelling house (Class C3) comprising basement, ground, first and second floor levels; installation of plant at basement level, new landscaping to front and rear gardens; and associated works. Namely, to amend the wording of Condition 3 (COCP) to reflect phasing.

Amendments to planning permission dated 15th Juy 2021 (RN:20/07184/FULL) for Variation of conditions 1 and 15 of planning permission dated 23rd March 2018 (RN:17/08716/FULL) 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 wording of condition 37 to allow the use of the pavillion by hotel customers and visitors.

Amendments to planning permission dated 8 August 2018 (RN:18/03076/FULL) for the: Excavation to extend the lower ground floor and increase floor-to-ceiling height, demolition of existing conservatory and erection of extension to side elevation, and erection of infill extension to rear elevation at lower ground floor level all to enlarge dwellinghouse (Class C3). Alterations to rear elevation including infilling existing window and creation of 3no. new windows at second, third and fourth floor level. Removal of existing tree to front boundary. Installation of mechanical plant to fourth floor roof terrace, all in connection with the existing single family dwelling (Class C3). NAMELY, to allow increasing the height of the three new front ground floor windows of the new extension car park side of the house and to the ground floor level window, configuration to the rear elevation and retention of existing brickwork.

Amendments to planning permission dated 29th July 2014 (RN 13/09737/FULL) for the demolition of Ergon House and construction of eight storey residential building incorporating a ground floor retail unit (Class A1) and partial demolition and reconstruction of rear wing of 9 Millbank and conversion to residential use to provide 161 residential flats. Conversion of the gatehouse on Dean Bradley Street to provide a single dwelling unit. Provision of basement car parking and landscaped courtyards. Namely, alterations to internal layout, provision of new window, changes to roof level terrace, balustrading and arrangement of planters, provision of new guarding and access gate at level 09, openable windows, internal works, alterations to roof screen, new smoke shaft to north east corner, new smoke extract at level 09 and new fixings for maintenance purposes.

Amendments to planning permission dated 29th July 2014 (RN:13/09737/FULL) for demolition of Ergon House and construction of eight storey residential building incorporating a ground floor retail unit (Class A1) and partial demolition and reconstruction of rear wing of 9 Millbank and conversion to residential use to provide 161 residential flats. Conversion of the gatehouse on Dean Bradley Street to provide a single dwelling unit. Provision of basement car parking and landscaped courtyards. Namely internal layout changes to Basement Level -1.

Amendments to planning permission dated 07 April 2017 (RN:16/06616/FULL) for the: Demolition of Ergon House and construction of eight storey residential building incorporating a ground floor retail unit (Class A1) and partial demolition and reconstruction of rear wing of 9 Millbank and conversion to residential use to provide 161 residential flats. Conversion of the gatehouse on Dean Bradley Street to provide a single dwelling unit. Provision of basement car parking and landscaped courtyards, NAMELY to vary condition 31 to read as follows: 'You must apply to us for approval of details of tests undertaken on the installed CHP system to demonstrate that it conforms with the details modelled in the updated air quality assessment presented in the letter from Parsons Brinkerhoff dated 11th November 2016 and titled "WSP | Parsons Brinckerhoff Response to GLA Air Quality Comments - Ergon House (16/06616/Full). You must submit the relevant details to us for approval within three months of occupation. You must then carry out the development in accordance with the approved details.'