Variation of Condition 1 of listed building consent dated 26 June 2016 (15/09739/LBC) for Refurbishment and replacement of facades and erection of 2 additional floors and plant enclosure to both Millbank Tower and 1 additional floor to the Y buildings; excavation of basement levels; demolition of rear car park in association with re-landscaping and reconfiguration of wider site; all in association with the use of the Tower as 207 private residential flats (Class C3) and Skybar (ancillary to adjacent Class C1), the south podium and part of tower as an arts/ cultural facility (Class D1) and the north podium and Y buildings as a 150 bedroom hotel (Class C1) with restaurant, bar and cafe at ground floor level. Use of roof of podium building as a terrace with associated alterations, NAMELY to allow changes to list of approved plans for internal and external amendments to accommodate an increase in number of hotel bedrooms from 150 to 232, complete demolition and rebuilding of the prow to allow for reconfiguation of arts/cultural facility, amendments to the residential mix/layouts in the Tower, re-configuration of basement car parking, adjustments to landscaping and associated alterations.

Variations of condition 3 and 8 of listed building consent dated 6th November 2020 (RN 20/05014/LBC), for the variation of condition 1 of listed building consent dated 17 March 2020 (RN: 19/09420/LBC) for the variation of condition 1 of listed building consent dated 14th December 2015 (RN:15/04587/LBC) for the 'Excavation of single storey basement, erection of double pitch mansard roof extension containing two storeys to replace existing roof and plant rooms and internal and external alterations, including alterations to front entrance and canopy, replacement of windows and installation of new kitchen extract duct. Alterations and extensions in connection with refurbishment of existing hotel. NAMELY, to remove the requirement for the new windows to be single glazed (Linked to 22/02966/FULL)

Variation of condition 1 and details pursuant to conditions 4 and 5 of listed building consent dated 20 February 2017 (RN: 16/11271) which varied condition 1 of listed building consent dated 15 August 2016 (RN: 15/11235/LBC ) for: 'partial demolition to the rear of the building; rebuild of the rear facade and erection of single storey rear extension; internal and external works; all in connection with use of the building as an art gallery/art education use. Namely, removal of terrace above single storey extension and details of facing materials and all new windows.

Variation of condition 1 of listed building consent dated 20th May 2021 (RN 20/08075/LBC ) for the enlargement of rear lightwells and erection of rear extensions at lower ground floor, use of garage as habitable accommodation and associated replacement of garage door with window, replacement windows in rear extension, replacement rooflights, removal of tree in front garden and associated landscaping as well as internal alterations across all levels. NAMELY, to make the existing rooflight over stairs central, new timber double glazed doors, new external door, new metal railings and new thin french aluminium doors within replacement glass structure. (Linked to 22/02324/FULL)

Variation of condition 1 of listed building consent dated 09 October 2020 (RN: 20/05058/LBC) for the: Variation of Condition 1 of the listed building consent dated 23rd July 2019 (RN: 19/04368/LBC) for 'Internal and external alterations including erection of rear extension at ground floor level, swimming pool at lower ground floor level, alterations to rear courtyard in connection with use as a single family dwelling house. Namely, to allow the installation of external lighting to the ground floor front entrance and the first floor balconies, installation of crossbars at high-level below the rooflight in the main stairwell to hang two chandeliers, repairs and alterations to the existing fireplaces and hearths, and installation of supplementary mechanical ventilation to part of second and third floor levels.

Variation of condition 1 of listed building consent dated 04 March 2021 (RN: 20/05832/LBC) which itself varied condition 1 of listed building consent dated 28th February 2020 (RN: 19/06360/LBC) for, 'Works in connection with use of the premises as a hotel, restaurant and private members club (Sui Generis), including the infilling of the alleyway to the rear of 43 North Audley Street, demolition and rebuilding of 43 North Audley Street to provide a building of two storeys plus mansard, erection of a two storey extension to the rear facade of 1 Lees Place, including the extension of the basement floor to the front facade; installation of plant, the creation of a terrace at roof level of 22 Grosvenor Square and associated internal and external alterations'; NAMELY, to allow addition of attenuated louvers at Elevation D (southern elevation of roof top pavilion) and Elevation A (eastern elevation of roof top pavilion); low-level plant enclosure at northern extent of level 5; reinstate and extend a staircase between lower ground and ground floor; addition of attenuated louver at refuse store door; and the inclusion of an emergency plant noise condition. (Linked with 21/04928/FULL)

Variation of Condition 1 of listed building consent dated 22nd June 2021 (RN 21/00510/LBC) for, 'Erection of rear extensions at second, third and fourth floor levels to incorporate a new lift; demolition and replacement of rear courtyard floor slab, replacement of the existing mansard roof and raising of chimney stacks; demolition and rebuild of two chimney stacks on the mews; replacement of windows; installation of air conditioning units at roof level and under pavement basement vaults; Internal alterations including; installations of Fan Coil Units and services throughout, replacement of chimneypieces; replacement floor finishes, insertion of partitions and redecoration throughout'; NAMELY, to remove existing MDF (non-original) fire surround in the service kitchen and replace with a stone fire surround at basement; Remove existing fire surround in the entrance hall and replace with an antique Georgian timber fire surround; Replace the existing non-original timber balustrade at ground floor with a period detailing balustrade; and Replace the non-original plasterboard ceiling in the glazed link with a plasterboard ceiling and replace the high level cornice with a period profile at ground floor; Replace the existing fire surround in the bedroom/ study with an 18th Century marble chimneypiece; Replace the existing fire surround in the master bathroom with a Regency chimneypiece; and Remove the timber surround and step to the phantom door between the stone staircase and lift lobby at second floor; Existing bedroom 2 fireplace to be carefully removed and stored on site; and Relocate the existing fireplace and grate from the master bedroom to bedroom 2 at third floor; Existing entrance hall fire surround to be relocated to bedroom 4 at fourth floor; and Installation of a new period style entrance lantern on the railings to the front of the building; and security cameras.

Variation of condition 1 of listed building consent dated 19th May 2021 (RN 20/00447/LBC) for the variation of condition 1 of listed building consent dated 21 June 2019 (19/03340/LBC) for the Excavation of basement extension beneath the existing property and part of the garden with associated lightwell and rooflights; demolition and rebuild of existing garage building; erection of single storey first floor side extension. Internal alterations including the removal and addition of partitions, NAMELY, to allow an integration of 3 conservation roof lights on the rear pitch of the roof in the main building. (Linked to 21/05100/FULL)

Variation of condition 1 of listed building consent dated 19 May 2021 (RN: 20/00447/LBC) which itself varied condition 1 of planning permission dated 21 June 2019 (19/01700/FULL) for the Excavation of basement extension beneath the existing property and part of the garden with associated lightwell and rooflights, demolition and rebuild of existing garage building, erection of single storey first floor side extension, NAMELY, to allow the replacement of window with French doors at front lower ground floor and replacement of internal single door leading to study with sliding doors on lower ground floor.(Linked with 21/04106/FULL)

Variation of conditon 1 of planning permision dated 26 February 2021 (RN: 20/08147/LBC) for the: External alterations to the rear including installation of replacement doors windows at lower ground and ground floor, installation of rooflight at second floor level and rooflight at roof level, raising the terrace level and replacement of roof tiles. Internal alterations including installation of replacement lighting at lower ground and ground floor, addition and removal of partitions throughout, erection of staircase in extension at ground floor and installation of ceiling roses at ground and first floor. NAMELY, to allow alterations to the lower ground floor plan through the removal of the wall between the hallway and dining area.