Excavation of basement storey beneath main house, demolition and rebuilding of mews house at new height plus the addition of a lower ground floor storey, demolition and rebuilding of main roof plus addition of plant equipment, erection of extension for lift from basement to third floor level, demolition and replacement of interconnecting extension between main and mews house, use of roof of interconnecting extension as a roof terrace, increasing height of boundary shared with 78 Chester Square and other external alterations as well as internal alterations throughout. (Linked with 22/05927/FULL)

Variation of Condition 1 of listed building consent dated 19 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, to allow reconfiguration of the existing garage and 14 Sherlock Mews entrance at ground floor, including the replacement of all doors at ground floor with a unified design and appearance; reconfiguration of the internal layouts to levels 1 and 2; unify the 14 Sherlock Mews elevation in brickwork of a consistent colour, bonding and character; replacement of windows; refurbishments to the front facade of the mews house; and associated works.

Erection of a temporary fire escape staircase for 21 Arlington Street for a period of 3 years and facilitating works including demolition of modern conservatory to William Kent House and a blockwork wall, associated cuts into listed fabric to enable structural support of the escape stair, and works to make good the fabric upon removal of the temporary escape stair and permanent hard landscaping in place of removed conservatory.

Variation of condition 1 of listed building consent dated 16 April 2018 (RN: 18/01437/LBC) for the: Variation of Condition 1 of listed building consent dated 18 August 2017 (17/03792/LBC) Demolition of rear extensions and erection of a new extension at the lower ground to the fourth floor levels, excavation of a basement to the rear of the main dwelling, replacement windows, and refurbishment of the front pavement vaults, and associated internal and external alterations in connection with the use of property as a single family dwelling house. Namely, to allow the modification of roof level acoustic enclosure to house the approved air conditioning units.

Amalgamation of the ground and first floor maisonette, with the second floor flat, the third floor and part of the fourth floor penthouse to create a single family dwelling house, creation of separate self-contained four bedroom flat at fourth floor level (accessed via 19M Hyde Park Gardens). Demolition of existing extension at ground and first floor, installation of replacement windows at ground, first, second and third floors, demolition of crittal doors and terrace at fourth floor and roof level, erection of mansard roof with dormer windows and parapet, demolition of roof access and rendered chimney and erection of lift motor room at roof level. Internal alterations and refurbishment, including the reinstatement of original features throughout including fireplaces and joinery details, reinstatement of spiral stair from lower ground to third floor, demolition of lowered ceilings, removal of a twentieth century stair and addition and removal of partitions (linked to 20/08322/FULL).

Replacement of metal mesh and door and restoration of the Snowdon Aviary to encompass new monkey species, apparatus and informal housing for aviary species, safety and balustrade alterations to 'M' bridge, replacement of concrete shelter and erection of new animal house annex and links, alterations to the education building to the west of the aviary, removal and replacement of trees and landscaping alterations including installation of new gate for construction and emergency vehicles, together with demolition of north pheasantry aviaries and re-landscaping. (Linked to 20/02586/FULL).

Excavation of a basement under footprint of the house and part of front and rear garden incorporating lightwells, demolition of existing rear conservatory and erection of a single storey glazed rear extension, removal of rear dormer and erection of new dormer window, installation of replacement rooflights, replacement/repair of windows, rebuilding of existing timber shed, installation of vehicular gates, installation of an air conditioning unit at the side of the building, and general internal/external refurbishment works. (Linked to 20/03115/FULL)