Installation of glazed roof covering the Norman Shaw North internal courtyard, to provide further accommodation for parliamentary uses (Sui Generis); internal and external refurbishment, including installation of new building services and rooftop louvres; courtyard roof fixings; secondary glazing; and interiors; alterations to existing openings and basement vaults; piled foundations in Commissioners Yard to support a temporary construction plant gantry, and associated works including temporary construction works. (LINKED TO 19/08243/FULL) REVISED SCHEME: including amendment to courtyard opening associated with main entrance, courtyard roof structural support, courtyard lighting & courtyard floor finish; amendment to roof ventilation detail, access to ducts in reconstructed chimneys; removal of lift from south-west stairwell and omission of UKPN substations.

Erection of mansard roof extension. (Amendment to listed building consent dated 21 November 2022 RN: 22/06070/LBC to allow internal layout change to the mansard roof extension plan and alteration to the railing behind front elevation parapet.)

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) (Amendment to listed building consent dated 24 June 2021 (RN: 20/07237/LBC) to reconfigure basement to new build mews element to elongate pool and alter poolside accommodation.)

Variation of condition 8 of listed building consent dated 12 April 2018 (RN:17/09924/LBC) for the: Use of 8 Grosvenor Square and 1a and 2 Duke's Yard as a single family dwelling with rear extensions to 8 Grosvenor Square at second to fourth floor levels; infilling of east lightwell and creation of terrace at third floor level; new plant room at roof level. Demolition of ground and first floor rear extension to 1a and 2 Duke's Yard and replacement with new building on sub-basement, basement and ground floors with extended garden terrace to main house over. Use of 1 Duke's Yard as a single family dwelling. Associated internal and external alterations to all buildings. [Site includes Nos.1, 1a and 2 Duke's Yard]. NAMELY, to allow alterations to the roof plant ductwork, attenuator and air intake/exhaust; amendment to flue; introduction of hoop iron and lanterns to railings at Brook Street elevation; amended CCTV positions at Brook Street Elevation & Courtyard East Elevations; and internal amendments to the swimming pool, garages and stairs. (S19 application).

Variation of condition 1 of listed building consent dated 3 June 2020 (20/02584/LBC), which in itself varied condition 1 and removed condition 9 to allow for an amendment to the lower ground floor level of a scheme approved 15 January 2020 (19/04746/LBC) for alterations and extension of the building including partial replacement of the existing lower ground and ground floor rear extension and the creation of an extension at these levels, works in association with a roof terrace to main roof level including new skylights, the lowering of the rear garden level and alterations to the rear garden walls, works within the front lightwell, and internal alterations; NAMELY, for omission of a/c units within rear lightwell,amendments to rear extension, stair overrun and plant enclosure, new rain water pipe location,alterations to stairs in rear garden, reduced excavation beneath rear extension, and internal alterations. (linked to 20/06270/FULL)

Variation of Condition 1 of listed building consent dated 15 December 2020 (RN: 20/06887/LBC) for the alterations at roof level including installation of photovoltaic panels, condenser units, rooflights and other associated roof repairs and provision of a sedum roof; namely to amend the layout of the photovoltaic panels, condenser units, detailed design of the rooflights.

Variation of Condition 1 of listed building consent dated 19th July 2018 (RN: 18/02362/LBC) for, 'Demolition of rear facade of Nos. 96-98 Baker Street and front and part rear facades of No. 14 Sherlock Mews, use of first to fourth floors of Nos. 96-98 Baker Street as eight residential flats (Class C3), amalgamation of flats at first and second floors of No. 14 Sherlock Mews into a maisonette (Class C3), erection of replacement shopfronts to Baker Street facade, erection of replacement rear facade to Nos. 96-98 Baker Street, erection of replacement front facade to No. 14 Sherlock Mews, alterations at roof level, and other associated external alterations'; NAMELY, (i) Amendments to the design of the main door of the residential entrance at the Baker Street front elevation; (ii) Amendment to the material finish of the residential entrance to the building at the Baker Street front elevation; (iii) Internal layout changes to 1st - 4th floor flats at 96-98 Baker Street; (iv) Reconfigured exhaust shaft for theatre at 1st floor terrace to the Baker Street rear elevation; (v) Modification to bedroom windows at the Baker Street rear elevation to accommodate exhaust shaft for theatre; (vi) Revised location of access hatch to roof; (vii) Reduced area for clerestory pop-up at Baker Street rear elevation; (viii) Addition of a guard rail at roof level; and (ix) Introduction of external pipework to the Baker Street rear elevation.

Variation of condition 1 of listed building consent dated 14 April 2020 (RN 20/00004/LBC) (which varied listed building consent dated 29 April 2016 (RN: 15/10368/LBC)) for 'Substantial demolition and redevelopment behind retained front facades as well as the demolition and reconstruction of mews properties to create two single family dwelling houses. Associated alterations and extensions include subterranean basements, which will extend beneath the mews, part courtyard and the rear sections of the listed buildings; re-instatement of the party wall in the rear courtyard; re-instatement of entrance to no.108; rear lower ground floor extensions partially infilling the rear courtyard and with roof terraces above; construction of full height closet wing extensions; reconstruction of mansard roof extension; installation of mechanical plant; and internal alterations on all floor levels (Site includes nos. 107 - 108 Eaton Square and nos. 107 - 108 Eccleston Mews)'. Namely, to allow minor amendments including a reduction in size of the basement extension (omission of the basement beneath the main house of both properties), alterations to the appearance of the building including retention of parts of the rear elevation and changes to the lower ground floor courtyard fenestration, and internal changes. NAMELY, to vary the approved drawing numbers to amend the roof of the lower ground floor link to form a roof terrace, alteration to to the lower ground floor fenestration, change to the new rear outrigger fenestration detail and internal changes to the main houses.

Variation of Condition 1 of listed building consent dated 28 January 2021 (RN: 20/07380/LBC) for alterations to and partial replacement of the Picture Gallery roof (linked to 20/07543/FULL), NAMELY to amend drawings to reflect alterations to North and South drainage outlets from the picture gallery roof.

Variation of Conditions 1, 2, 3, 4, 5 and 6 of listed building consent dated 29 October (20/05214/LBC) for: erection of a pavilion structure and installation of a water feature within the Quadrangle; retention and relaying of Quadrangle courtyard cobbles within a revised design layout; installation of a sesame lift to the steps on the north side of the Quadrangle and associated works namely; to amend the design of the facade, alteration to the design of the rooflight, relocation of doors, introduction of push panels and access bollards, changes to cobblestone pattern; introduction of raised stonework and lighting around water feature and submission of details of facing materials, interior materials, water feature materials, typical bay details and sesame lift details previously reserved by conditions 2, 3, 4, 5 and 6.