Variation of Condition 1 and 11 of planning permission dated 20 October 2022 (RN: 22/04903/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; and 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, design modifications to the Carlton House Terrace elevation including an additional entrance, pavement lights, replacement railings and re-alignment of a section of the south facade; alterations to the lower ground floor glazing on the west elevation, a new stairwell and platform lift to roof terrace (level 10), widening of central core to accommodate emergency access and fire-fighting lifts, realignment of level 10 balustrade and alterations to south-west lift overrun and amendment to the wording of Condition 11 to include the word 'pergolas'.

Variation of Conditions 1 and 13 of planning permission dated 06 January 2022 (20/05147/FULL) for part demolition of rooftop plant room and creation of a single storey roof extension at Brettenham House to provide B1 office floorspace; associated creation of terraces to the north and south part of the roofs; replacement and relocation of roof plant to basement level at Brettenham House; creation of a new office entrance to Savoy Street at basement level one of Brettenham House; refurbishment of ground floor shopfronts at Brettenham House on Lancaster Place facade; provision of cycle parking and associated facilities in the basement of Brettenham House; replacement of all the external windows and associated facade maintenance and cleaning and associated works at Brettenham House and 1 Lancaster Place NAMELY; alterations to the design of Savoy Street elevation, new accessible entrance to Savoy Street elevation, alterations to the cycle service and basement layout and UKPN substation access.

Variation of condition 1 of planning permission dated 01 March 2012 (RN:11/11498/FULL) for use of part ground and upper floors as a single dwelling house (Class C3). Demolition of part of the existing two storey rear extension at ground and first floor level to create an open patio area. Construction of rear extension at second floor level. Removal of part of the existing roof and attic space to create a roof terrace and rooflight and screen to front elevation. Alterations to front and rear elevation windows and doors. NAMELY, repositioning of metal balustrade and extension of flank parapet wall.

Variation of condition 1 of planning permission dated 4th October 2022 (RN 22/00448/FULL) for the demolition of the existing hipped roof and construction of a roof extension, a rear extension involving the infill of an existing undercroft area at ground floor, the replacement of an existing link building (between the building fronting Chapel Side and Esca House to the rear) and an additional second floor storey, and the excavation of a basement under the main building, in association with the change of use of the ground and first to residential flats (Class C3). Replacement windows to the front and rear elevations, and the creation of a terrace and green roof on the rear extension roof at third floor level and a terrace at rear fourth floor level. NAMELY, to increase size of basement level and creation of associated lightwell; Alterations to fenestration; relocation and alteration of rear dormers; Internal changes to layout of residential accommodation; and associated external alterations.

Variation of condition 1 of planning permission dated 08 March 2021 (RN: 20/03732/FULL) for the: Single storey rear extension with external landscaping following demolition of existing side and rear additions; Rear extension to existing flat-roofed North East Bay; New metal fence and Entrance gate; Rear skylight to replace existing, plant, all in connection with use as single dwellinghouse. NAMELY, alteration to, and introduction of windows and doors; replacement of existing timber side entrance to be rendered to match the main house; metal railings to the front elevation; traditional cast iron railings to rear elevation; soil vent pipes to rear and side elevations; ridge tiles to the south east bay; and retention of the flank wall in yellow stock brick instead of the approved rendering.

Variation of condition 1 and13 of planning permission dated 06 January 2022 (20/05147/FULL) for 'Part demolition of rooftop plant room and creation of a single storey roof extension at Brettenham House to provide B1 office floorspace; associated creation of terraces to the north and south part of the roofs; replacement and relocation of roof plant to basement level at Brettenham House; creation of a new office entrance to Savoy Street at basement level one of Brettenham House; refurbishment of ground floor shopfronts at Brettenham House on Lancaster Place facade; provision of cycle parking and associated facilities in the basement of Brettenham House; replacement of all the external windows and associated facade maintenance and cleaning and associated works at Brettenham House and 1 Lancaster Place'. Namely, to allow the following amendments: (1) the two double doors adjacent to the bays on Savoy Street to be relocated to allow for UKPN substation access and fire egress; (2) the louvre on Savoy Street will be replaced by a single fire escape door; (3) the double height roller shutter with wicket door will be replaced by a smaller double door and window on Savoy Street; (4) internal layout amendments at Basement 2 level including relocation of the disabled parking bays to Savoy Street, if the demand arises; and (5) relocation of the accessible entrance to the building.

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 30 September 2019 (19/04631/FULL) for Variation of condition 1 (approved plans) and 9 of planning permission dated 21 November 2017 (RN: 17/07627/FULL) for the: Demolition of existing building and redevelopment to provide a new building comprising lower ground floor, mezzanine, upper ground floor and first to eight floor levels for use as hotel (Class C1) with ancillary Bar/Restaurant, external landscaping and associated works. Namely, to allow maintenance access to the terrace; an additional two metres of excavation at basement level, the extension at basement and ground floor level out to the rear boundary with the alms house, increased plant screen height by 0.6 metres, the introduction of a maintenance doors to the front and rear at the 8th floor, the removal of coloured window reveals, alterations to the rear lightwell, removal of skylight and bench to the front forecourt, the addition of two security bollards at front boundary of the site. NAMELY to allow the installation of 3 additional illuminated bollards to front forecourt.

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 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.