Amendments to planning permission dated 21 April 2020 (RN: 19/07998/FULL) for 'Demolition of existing building and erection of an eight-storey building over basement providing six residential flats (Class C3 Use) on the upper floors and a retail unit (Class A1 Use) at ground and basement levels including associated plant at basement, ground and sixth floor levels, roof terraces at sixth and seventh floor levels and PV panels at roof level'. NAMELY, to amend the description of development to read 'Demolition of the existing building and erection of a new building providing a retail unit (Class A1 Use) and six residential flats (Class C3 Use), including associated plant equipment, roof terraces at sixth and seventh floor levels and PV panels at roof level'.

Amendments to planning permission dated 24th June 2021 (RN:20/07236/FULL) for Use of the existing buildings to create two dwelling houses with extensions including demolition and rebuilding of the mews building and excavation to extend the existing basement, installation of air conditioning units on the roof of 1 Upper Belgrave Street and vaults of 1 and 2 Upper Belgrave Street, and associated alterations. (Site includes 1 Groom Place). NAMELY, to demolish the existing lower ground floor slabs in both existing houses and replace with new slabs.

Demolition of existing roof and erection of a mansard roof extension at first floor level and alterations to the front and rear of the portion of the building fronting onto Bryanston Mews East. Subdivision and reconfiguration of existing ground and lower ground floor levels of the building and together with the new first floor extension to the mews portion of the building, create two self-contained residential units (Class C3) and associated external alterations. Lowering of front pavement vault [Site includes 22 Bryanston Mews East] (Linked with 23/07347/LBC)

Variation of Condition 1 of planning permission dated 03 August 2023 (RN: 23/02362/FULL) for, 'Partial demolition; infill of rear lightwells; front extension at fifth floor level and introduction of a terrace; partial replacement of front elevation; refurbishment of existing building; installation of plant equipment; replacement windows; cycle parking; and associated external alterations; in connection with the use of the building as Offices (Class E);; NAMELY, the reduction of roof level massing to the rear, installation of guttering above fifth floor and introduction of roof pitch increasing the height of the fifth-floor façade by 250 mm; removal of external basement to ground floor stair to the rear, revised canopy design to the front, revised signage design to left of canopy, addition of three external wall lights at ground level, new planters at ground and terrace levels, revised Crittall style window arrangement, spandrel panel at front facade to incorporate vertical detailing to match mullions, change in location of bike racks, reduction of window sizes to east and west lightwell infills and introduction of grilles at eastern infill, and proposed reduction in rooflight to east and west infill extension. (Application under Section 73 of the Act).

Demolition and replacement of rear extension at lower ground, new extension at ground adjacent to boundary with no. 19 St Petersburgh Place; demolition and replacement of existing rear ground conservatory; installation of new metal railings enclosing terrace at rear first floor; alterations comprising of replacement fenestration and doors to front and rear elevations; and replacement and relocation of entrance steps with raised balustrade; alterations and infill extension to roof and installation of lantern light.

Amendments to planning permission dated 17 May 2022 (RN:21/01138/FULL) for demolition of existing buildings and redevelopment of the site to create a Class E use building, including basement plant and cycle parking facilities, installation of roof top plant and all other works incidental to the proposals. Namely, to amend the wording of Condition 29 (BREEAM).

Variation of condition 1 of planning permission dated 04 March 2021 (RN: 20/05720/FULL) which itself varied condition 1 of planning permission dated 28th February 2020 (RN: 19/06301/FULL) for, 'Use of 22 Grosvenor Square, 43 North Audley Street and 1 Lees Place as a hotel, restaurant and private members club/bar (Sui Generis), with works including the infilling of the alleyway to the rear of 43 North Audley Street, partial 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, changes to roof top plant, low-level plant enclosure at northern extent of level 5, inclusion of an emergency plant noise condition, and addition of attenuated louvre with decorative screening to the refuse store doors to ground floor in Lees Place. (S73 application)

Variation of conditions 1, 3, and 4 and removal of 9 and 10 of planning permission dated 24th November 2020 (RN:20/01665/FULL) for the Demolition of existing dwellinghouse, detached garage and boundary wall, excavation to create single storey basement, and erection of new two storey plus mansard roof accommodation dwelling house (Class C3) with integrated garage, new boundary wall/gates and associated hard and soft landscaping works. Namely, increase in lift overrun; to increase the footprint of the garage and for the enlargement of the basement and lightwell and modifications to elevations and to reflect the approved conditions

Demolition of external rear building wall and extension to the rear for a new lift shaft at second and third floors above the existing closet wing, internal refurbishment and reconfiguration of existing dwellings to deliver a total of 9 x additional residential units (Class C3), demolition of part of the low walls to the rear of the site at the boundary on Queens Mews, and associated green roof landscaping to front. (Application 3 of 4 related applications)

Installation of a passenger lift and a new spiral stone stair in the location of the existing redundant secondary staircase; demolition and redevelopment of late 19th century rear addition; courtyard extension to the north side of the property, with Marylebone Mews frontage and use as a member's club (sui generis); alteration of roof-escape to accommodate plant behind a new pitched roof; addition of a replacement stair from second to third floor, following the demolition of late 19th century additions at these levels; and internal alteration and refurbishment, including the upgrading and re-routing of services. (Linked with 23/05229/LBC)