Amendments to planning permission dated 30 March 2022 (21/07642/FULL) for the variation of Conditions 1, 20, 21, 23, 24 of planning permission dated 16th March 2021 (RN 20/04933/FULL) for the demolition of existing mansard roof and roof level plant and construction of two storey vertical roof addition with extensions at fourth, fifth, sixth and seventh floor levels for additional office (Class B1) floorspace. Use of the lower ground and basement level for flexible/alternative office (Class B1)/retail (Class A1)/leisure uses (Class D2); car parking, cycle parking, ancillary office uses and mechanical plant. Alterations to the existing building including new windows and entrance, new terraces to eighth and tenth floor levels and new plant enclosure at roof level and associated works; amendments to car parking provision (retention of the public car park), alterations to the cycle parking provision and basement layouts and reduction in flexible commercial floorspace; NAMELY, Street scape enhancements (Front elevation - Carlton House Terrace and Facade realignment); Amenity enhancements (Inclusion of glazed doors to external terraces (west elevation), external terraces and Level 10 Roof Access) and Detailed design and technical amendments (Widening of the central 'core strip' and Balustrade Position at level 10).

Amendments to planning permission dated 02 March 2022 (21/08243/FULL) for 'Variation of condition 1 of planning permission dated 25th August 2021 (RN 21/03822/FULL) which itself varied condition 1, condition 4 (part a) and condition 5 (parts i, iv and v) and the removal of Condition 4 (parts b and c), 5 (parts ii and iii) and 8 of planning permission dated 3 December 2020 (RN:20/03764/FULL) for removal of existing roof top plant and extension to create an additional storey at fifth floor with tiled mansards and lead clad dormer windows to front and rear; a single storey extension at fourth floor comprising a glazed dome above the existing rear bow; installation of plant at roof level; partial infilling of lightwell adjacent to Gwydyr House; facade cleaning and other facade repairs; and other associated works in connection with the existing use (Sui Generis). Namely, amendments to the abutment of the roof extension with Banqueting House and alterations to the rear part of the mansard roof extension.' Namely, amendments to the new fifth floor roof layout, installation of dry riser inlet, and part cornice removal on rear elevation to facilitate the installation of the consented springing dome; and variation to the wording of condition 3 (materials) to a compliance condition.

Amendments to planning permission dated 01 September 2021 21/01606/FULL for Variation of Conditions 1 and 6 of planning permission dated 08 July 2020 RN 19/09027/FULL for the Partial demolition at 142-150 Wardour Street including removal of existing mansard roof to Film House and part of the rear and side facades, replacement of mansard roof, erection of new sixth floor and new sheer frontage at the eastern end of the site for office use Class B1 creation of restaurant units Class A3 at part ground and part basement levels fronting St Annes Court, Wardour Street and Sheraton Street, shopfront alterations, creation of a terrace at sixth floor level for office use, installation of a roof level plant enclosure and associated external works Site includes 138 Wardour Street, 142-150 Wardour Street and 20 St Annes Court); NAMELY, to enable the introduction of five black painted support pattress plates to the external façade on St Annes elevation, replacement of large vertical glazing with shallower glazing on the roof windows at Level 2 of St Annes Court elevation, alterations to the dry riser on Sheraton Street, alterations to the pavilion parapet at Level 7; and retention of the existing glazed horizontal blue banding at St Anne's Court.

Variation of condition 1 of planning permission dated 01 February 2017 (RN: 16/07799/FULL) for 'Alterations including erection of extensions at rear lower ground, ground and first floor levels, creation of roof terrace at rear third floor level, replacement of non-original windows, external repair works and landscaping'. Namely, to allow amendments including repairs to the front and rear elevations and roof coverings; adjustments to the access hatch to the roof, omission of the approved walkway and handrail and re-siting of the chimneystack to its original position; repair and rationalisation of pipework; alteration of rear French door design and provision of double glazing in the conservatory; enclosing of the rear lightwell between the main house and extension at lower ground level with rooflights; alteration of landscaping in the garden and terrace areas; and internal refurbishment works.

Variation of condition 1 of planning permission dated 25th August 2021 (RN 21/03822/FULL) which itself varied condition 1, condition 4 (part a) and condition 5 (parts i, iv and v) and the removal of Condition 4 (parts b and c), 5 (parts ii and iii) and 8 of planning permission dated 3 December 2020 (RN:20/03764/FULL) for 'Removal of existing roof top plant and extension to create an additional storey at fifth floor with tiled mansards and lead clad dormer windows to front and rear; a single storey extension at fourth floor comprising a glazed dome above the existing rear bow; installation of plant at roof level; partial infilling of lightwell adjacent to Gwydyr House; facade cleaning and other facade repairs; and other associated works in connection with the existing use (Sui Generis)'. Namely, amendments to the abutment of the roof extension with Banqueting House and alterations to the rear part of the mansard roof extension.

Variation of Condition 1 of planning permission dated 22nd June 2021 (RN: 21/00511/FULL) for, 'Erection of rear extensions at second, third and fourth floor levels to incorporate a new lift; demolition of existing mansard roof and erection of replacement mansard; demolition and replacement of rear courtyard floor slab; installation of air conditioning units at roof level and under pavement basement vaults; demolition and rebuild of two chimney stacks on the mews; replacement of windows on all elevations of the main house, demolition and re-building of rear ground floor toilet annexe, and associated internal and external works'; NAMELY to install new lanterns on the railings at the front entrance of the building, and security cameras at ground and lower ground floor level.

Variation of condition 1 of planning permission dated 19th July 2021 (RN 21/02117/FULL) for the erection of roof extension at fourth floor level to enlarge dwellinghouse (Class C3), renewal of the roof terrace trellis and planters, reduction of garage door width and addition of new section of wall with a casement window to rear elevation. NAMELY, alterations to Lower Ground floor, the proposed metal Garage shutter is replaced with a timber horizontal sliding door to match existing at 25; At Lower Ground floor, the new addition of wall with a casement window to rear elevation will be cladded with timber to match the Garage door finish; All the existing windows throughout the house will be replaced with new timber windows to match existing and providing better thermal insulation and a new walk-on rooflight with etched glass is added to the Front Terrace to provide natural light to Bathroom 1 (S73 application).

Amendments to planning permission dated 09 December 2020 (RN: 20/04567/FULL) for the: Variation of Conditions 1, 4, and 5 of planning permission dated 25 June 2019 (RN: 19/02974/FULL) for: Refurbishment of Quadrangle Building and Quadrangle Surface including removal and replacement of roof of the Quadrangle Building and replacement of existing surface treatment, alterations to external eastern elevation, introduction of a protruding lightwell structure within Quadrangle Surface, removal and replacement of existing lightwell structures adjoining the King's Building and associated structural works to the adjacent balustrading, the removal and replacement of the King's Building exterior entrance steps, works to the Somerset House East Wing lightwell including removing and replacing balustrading and associated works. Namely, to allow amendments to the location of the replacement windows and associated additional fabric removal; amendments associated with the connection to the additional area (South B1); and installation of two additional handrails and tactile paving to the King's Steps.

Variation of Condition 1 of listed building consent dated 22 June 2021 (RN: 20/08345/LBC) for, 'Use of the basement, ground and first floor as a public house, and the second, third and fourth floors as meeting rooms / events space (Sui Generis). External alterations including installation of replacement windowpanes at second and fourth floor levels, replacement of windows with louvres at rear third floor level; installation of plant at main roof level and at rear second floor level within an enclosure with green roof. Installation of platform hoist and vent grilles in the Mount Street lightwell and a new high level extract duct at rear second and third floor levels to terminate at roof level; NAMELY to widen the lift shaft and some internal associated reconfigurations.

Variation of Condition 1 of planning permission dated 16 March 2016 (RN: 16/00374/FULL) which itself varied condition 1 of planning permission dated 28 July 2015 (RN: 15/02336/FULL) for excavation of a basement beneath existing building, part of front and rear gardens, demolition of rear facade, extensions to the rear and at roof level in connection with the use of the building as a single house. NAMELY, to allow revisions to the basement, lower ground floor and ground floor layout; other internal room layout alterations, alterations to existing consented ground floor rear terrace area; amendments to rear elevation including bay windows and consented French windows; alterations to fenestration along side elevations; raising of existing roof ridge; regrading of existing side passageways from front to rear garden along site boundary to more; alterations to front garden planters.