Amendments to planning permission dated 09 September 2021 (RN: 21/02099/FULL) for the: Installation of a glazed roof covering to the internal courtyard to provide further accommodation for the parliamentary uses (Sui Generis); installation of chillers at ground level adjacent to the northern elevation; basement piling; alterations to the courtyard eaves to create a roof access gallery; alterations to the northern elevation; alteration of north western corner stepped plinth; alteration to Laundry Road landscape and levels to provide accessibility improvements; and crane gantry screw piling located in Commissioners' Yard. Namely, to allow the demolition of the existing slab build-up and partial removal of the brickwork walls to the plinth along the North façade at lower ground floor and basement levels and installation of a new reinforced concrete slab.

Amendments to planning permission dated 27th September 2021 (RN:21/03686/FULL) for Demolition of existing residential dwelling and associated structures and replacement with a new single dwelling with associated hard and soft landscaping. Namely, alterations to the structure of the basement level as a result of re-orientation of proposed swimming pool and associated plant room and thickening of the slab between basement and lower ground floor to provide structural support; omission of proposed lift from basement to roof level; and alterations to internal layouts of all floors

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 5th May 2021 (RN:20/03389/COFUL) for Demolition of existing car park and redevelopment to provide a 4-storey block of sheltered residential dwellings (Use Class C3) and other associated works, including amenity space, car parking, cycle parking, refuse storage, and landscaping improvement works. Namely, amendments to the main entrance including the removal of a column adjacent to the main entrance; changes to windows and exit doors in order for compliance with AD Part B; addition of a new pedestrian exit door to the south elevation to Hall Place; addition of a cleaners store to the ground floor plan to provide storage and a sink for Westminster City Council to maintain the communal areas of the building; installation of air bricks to all elevations; raising of mansard window cills; updated roof layout including updating the layout of the photovoltaic panels and the omission of the mansafe system in favour of a fixed rooftop balustrade; incorporation of a fire corridor to all the apartments; alterations to the internal room sizes and 4 of the 20 units will be designed to full Part M4(3) Wheelchair User standards and be fully wheelchair accessible, changes to EVCP layout and insertion of louvres to the facades .

Amendments to planning permission dated 12th January 2016 (RN: 14/10918/FULL) for erection of a building including excavation works to provide three basement storeys and six above ground storeys for mixed use purposes including up to 79 residential units, retail shops, restaurants, multi-purpose community hall, community space, cycle and car parking, servicing, landscaping, plant and other works. (Site also known as Moxon Street Car Park) NAMELY, to move the entrance to the health club from Aybrook Street to Cramer Street; alterations to the private residential entrance to enable the route through to the courtyard to be externalised; the introduction of three small fixed roof lights at roof main level; internal layout changes to one apartment at fourth floor and one apartment at fifth floor.

Amendments to planning permission dated 18th February 2021 (RN:20/06601/FULL) for Variation of condition 1 of planning permission dated 21.5.20 (RN:19/07406/FULL), which itself varied condition 1 and 9 of planning permission dated 20.11.18 (RN: 18/03520/FULL) which itself varied condition 1 of planning permission dated 12 September 2017 (RN: 16/06423/FULL) for, 'Alterations to the existing building including retention & repair of the front and side facades, part demolition & replacement of the rear facade, rear extension of the 2nd-5th floors, removal of existing & introduction of a new 6th floor, introduction of a new set-back 7th floor, extension of the existing basement levels to include two additional basement levels (including one mezzanine level), installation of roof plant & plant screen, public realm works including hard & soft landscaping, removal of the security kiosks, fencing, bollards & gates/barriers to Blackburne's Mews & Culross Street, removal & replacement of 6 No. trees in front of the Grosvenor Square elevation & re-opening of the road on the western side of the Square, all in connection with the use of the building as a hotel (Class C1) with flexible retail/restaurant use at 1st floor, ground floor and basement 1 (Class A1/Class A3/Class C1), flexible restaurant/bar use at 7th floor (Class A3/Class A4/Class C1), leisure/spa facilities within the basement (Class D2/Class C1) & an ancillary ballroom, event spaces, back of house facilities & associated car, cycle parking & servicing facilities accessed from Blackburne's Mews, & other associated works' - NAMELY, to amend Condition 17 to remove reference to the seventh-floor level [requiring public access] and an additional condition to read as follows: The area at seventh floor level designated as a restaurant/bar (Flexible Class A3/A4/C1) must remain open to members of the general public (whether or not they are guests at the hotel or visitors of hotel guests) on not less than 200 days per year

Amendments to planning permission dated 20 December 2022 (RN: 22/05746/FULL) for variation of Condition 1 of planning permission dated 08 September 2014 (RN:14/03923/FULL) for the excavation to create basement extension and lower pavement vaults; removal of existing extensions and replace with extensions at rear lower ground to third floor level including roof terrace at rear first floor level; erection of fourth floor extension in mansard style to rear and open up blind windows to front; installation of plant within mansard structure; new landscaping to garden and replace boundary wall with 16 Wilton Crescent; namely, alterations to the size and position of the new rooflights and access hatch at roof level, opening up of a blind window at rear third floor level and alterations to the glazing on the front elevation. Namely, internal alterations to the staircase at Lower Ground, Ground and First Floor.

Amendments to planning permission dated 1st November 2022 (RN: 22/05327/FULL) for erection of a single storey rear extension at ground floor level, rear first floor extension to occupy the current rear terrace and part of flat roof; roof terrace at rear first floor level; enlargement of the roof with insertion of dormer windows to front and rear, and roof lights to rear; alterations to existing windows, new front gate and alterations to landscaping and parking and air conditioning unit with acoustic screening; infilling of the front entrance porch; and amendments to the side extension at ground floor level and a new rooflight NAMELY, the relocation of the plant room door and introduction of a new small window in the utility room.

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.