Variation of Conditions 1 and 10 and removal of Conditions 8 and 9 of planning permission dated 26th September 2016 (RN: 15/05936/FULL) for the: demolition of existing office building and redevelopment to provide a replacement building over two basement levels, lower ground, ground and eight upper levels. Use of the building for residential purposes (Class C3) providing a maximum of 23 flats including 14 car parking spaces at basement level, accessed from Buckingham Gate. Namely, to extend the internal usable space at basement level 2 and reconfiguration of basement 1 without increasing the approved extent of foundations, internal alterations, amendments to window layouts at levels 7 and 8; and to vary the wording of Condition 10 to approve updated Sustainability and Energy Strategy and remove Conditions 8 (uninterrupted demolition and construction) and 9 (installation of PV panels on roof).

Partial demolition and partial side facade extension, demolition and construction of new rear facade with extension at first floor, replacement of windows, doors and rainwater goods, new rooflight with landscaping and associated works.

Amendments to planning permission dated 16th March 2021 (RN 20/04933/FULL) for the Demolition of existing mansard roof and roof level plant and construction of two storey vertical roof addition with extensions at fourth, fifth, sixth and seventh floor levels for additional office (Class B1) floorspace. Use of the lower ground and basement level 1 for flexible/alternative office (Class B1)/retail (Class A1)/leisure uses (Class D2); basement level 2 for car parking, cycle parking, ancillary office uses and mechanical plant. Alterations to the existing building including new windows and entrance, new terraces to eighth and tenth floor levels and new plant enclosure at roof level and associated works namely to amend the wording of Condition 3 to allow the demolition phase to be split into phases.

Amendments to planning permission dated 26th 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, Repositioning of the rear chimney, construction of an additional chimney on the opposite side at rear to match (and the associated repositioning of the dormer window at second floor level); Reduction in the size of the rear basement lightwell and the line of the central recess on the rear elevation moved outwards, maintaining a slight step; Changes to the internal layout; Slight enlargement to the central courtyard and the addition of glazing (walk on roof light) to courtyard at second floor level; Slight repositioning of the dining room window at ground floor level on western elevation; replacement of the large study window (now living room window) with two small windows in new positions at ground floor level on western elevation; Replacement of large master dressing room window with two separate windows, one serving the hallway lightwell and the other serving a bathroom (the latter to be obscured) at first floor level on eastern elevation; Large hallway window reduced in size and repositioned to serve master dressing room at first floor level on eastern elevation; Replacement of large bedroom window with two small windows to serve bathroom and wc (window to wc to be obscured glass) at first floor level on western elevation; Additional windows on the inside return of the balcony to rear at first floor level; and split rooflight into two to allow for partition below, and two new rooflights in flat roof (rooflights would not be visible in elevation).

Amendments to planning permission dated 16th March 2021 (RN 20/04933/FULL) for 'Demolition of existing mansard roof and roof level plant and construction of two storey vertical roof addition with extensions at fourth, fifth, sixth and seventh floor levels for additional office (Class B1) floorspace. Use of the lower ground and basement level 1 for flexible/alternative office (Class B1)/retail (Class A1)/leisure uses (Class D2); basement level 2 for car parking, cycle parking, ancillary office uses and mechanical plant. Alterations to the existing building including new windows and entrance, new terraces to eighth and tenth floor levels and new plant enclosure at roof level and associated works'. NAMELY, to remove reference to level 1 and basement level 2; and for the description of development to read as follows: 'Demolition of existing mansard roof and roof level plant and construction of two storey vertical roof addition with extensions at fourth, fifth, sixth and seventh floor levels for additional office (Class B1) floorspace. Use of the lower ground and basement levels for flexible/alternative office (Class B1)/retail (Class A1)/leisure uses (Class D2); car parking, cycle parking, ancillary office uses and mechanical plant. Alterations to the existing building including new windows and entrance, new terraces to eighth and tenth floor levels and new plant enclosure at roof level and associated works'.

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 16 March 2021 (RN: 20/04933/FULL) for demolition of existing mansard roof and roof level plant and construction of two storey vertical roof addition with extensions at fourth, fifth, sixth and seventh floor levels for additional office (Class B1) floorspace. Use of the lower ground and basement level 1 for flexible/alternative office (Class B1)/retail (Class A1)/leisure uses (Class D2); basement level 2 for car parking, cycle parking, ancillary office uses and mechanical plant. Alterations to the existing building including new windows and entrance, new terraces to eighth and tenth floor levels and new plant enclosure at roof level and associated works; NAMELY, to vary the wording of Condition 6 from 'prior to commencement' to 'you must not start any work on these parts of the development'.

Amendments to planning permission dated 13th August 2021 (RN: 21/04242/FULL) for demolition of existing ground floor rear extension and erection of extension at ground floor level and first floor level; construction of a terrace at first floor level above ground floor extension; construction of a ground floor extension to front elevation (replacing a garage); and second floor roof extension. Namely, to replace the arched window opening to the porch on the front elevation of the new single storey extension with a door.

Provision of a new basement beneath the footprint of the existing house with walk on rooflights to provide light down into basement, rebuilding of bathroom extension, rebuilding of Octagonal wing, rebuilding of curved bay on south east elevation to a rectangular bay, demolition of existing retaining walls on south east elevation and eastern lightwell and construction of new stairs in these locations, replacement of fenestration throughout property, creation of terrace on top of corner infill extension, replacement of existing dormer, rationalisation of drainage, repair of stucco render, repair/ refurbishment and part replacement of existing roof, refurbishment/ replacement of existing chimney and pots, provision of an external bin and bike store and construction of a single storey Orangery at the bottom of the garden, with a basement below to accommodate a swimming pool.

Variation of conditions 1,11, 16, 22, 24, 25 of planning permission dated 30th June 2020 (RN 19/09318/FULL) for the demolition of two-storey coach house (72) and building behind retained front facade at 74, for the construction of new five storey building to provide 7 residential flats. Excavation of basement, demolition of existing rear garages and the erection of 2 additional residential dwellings including associated landscaping. NAMELY, to make minor material amendments including; rationalised front landscaping; moving the access to the rear from the southern side of the building to the northern side; adding skylights above the side wings; adding skylights to rear dwellings; making the lower ground floor rear terraces slightly deeper; making the second floor balcony slightly wider; making the ground floor railings wider (though no increase in terrace size); and adding three windows to south and north flank wall and reinstating the existing Juliette balconies to the front elevation.