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.

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 1 of listed building consent dated 5 March 2020 (RN 19/00530/LBC) for the Redevelopment of Pegasus House and Nuffield House including demolition behind a retained facade (west, south and east) of Nuffield House and replacement building comprising 2 level basement, ground, mezzanine and first to seventh floor and demolition and replacement of Pegasus House comprising 2 level basement, ground, mezzanine and first to fifth floors; amalgamation of the two buildings to provide new office (Class B1), retail (Class A1), restaurant (Class A3), flexible office / retail (Class B1 / A1), and residential accommodation (Class C3); and other associated works from RN 19/00530/LBC, NAMELY, to include the following changes: amend the design of the shopfronts and ground floor level entrances, rearrangement of reception spaces, alteration to lift overrun and Nuffield house roof massing and window replacement.