Amendments to planning permission dated 23 December 2022 (RN: 22/05428/FULL) for 'Two-storey extension including roof-level plant along the Bressenden Place façade to provide a new office entrance pavilion (Class E), the provision of Class E office / retail accommodation, remodelling of the crown of Portland House and creation of a setback rooftop extension to provide office amenity (Class E) and an outdoor terrace, reconfiguration of the second floor plant accommodation fronting Cardinal Place, relocation of the zephyr on Bressenden Place, provision of cycle parking, public realm and associated works including window replacement and the application of a new façade treatment', NAMELY to enable the removal of specified louvres, relocation of the generator, façade updates at ground floor level, installation of safety balustrading, relocation of the consented UKPN access, creation of a separate ground floor access for the crown amenity space and installation of additional sliding doors at Level 30.

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'.

Amendments to planning permission dated 23rd January 2023 (RN: 22/05428/FULL) for two-storey extension including roof-level plant along the Bressenden Place façade to provide a new office entrance pavilion (Class E), the provision of Class E office / retail accommodation, remodelling of the crown of Portland House and creation of a setback rooftop extension to provide office amenity (Class E) and an outdoor terrace, reconfiguration of the second floor plant accommodation fronting Cardinal Place, relocation of the zephyr on Bressenden Place, provision of cycle parking, public realm and associated works including window replacement and the application of a new façade treatment, namely to amend the wording of Condition 3 (Code of Construction Practice) to enable early works to be carried out in accordance with the Appendix A dated 22/11/22 signed by the Environment Inspectorate and prior to the discharge of Condition 3.

Two-storey extension including roof-level plant along the Bressenden Place façade to provide a new office entrance pavilion (Class E), the provision of Class E office / retail accommodation, remodelling of the crown of Portland House and creation of a setback rooftop extension to provide office amenity (Class E) and an outdoor terrace, reconfiguration of the second floor plant accommodation fronting Cardinal Place, relocation of the zephyr on Bressenden Place, provision of cycle parking, public realm and associated works including window replacement and the application of a new façade treatment.

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).

Variation of Conditions 1, 13 (part vi) & 19 (part h) of listed building consent dated 17 February 2020 (19/09926/LBC); for Alterations to existing building including creation of new pedestrian & vehicular entrances; alterations to bottle balustrades & parapets; creation of three additional storeys at fifth, sixth & seventh floors; creation of two additional basement storeys; partial demolition & reconstruction of central wing; demolition & reconstruction of Triangular Courtyard facades incorporating extensions at ground to fourth floors; external alterations to Quadrangle facades including new pedestrian entrances; landscaping to Quadrangle & Triangular Courtyards; creation of external terraces at fourth, fifth, sixth & seventh floors; entrance canopies; public realm works including alterations to security walls & bollards; removal & replacement of street trees; all in connection with use as hotel comprising up to 125 hotel bedrooms/suites with flexible hotel/retail/restaurant/bar use at part ground floor, flexible hotel/restaurant use at part lower ground, part ground & part second floors; flexible hotel/bar use at part fifth & part sixth floors; flexible retail, leisure, restaurant or bar use at part ground floor, leisure/spa facilities within the basement levels & part lower ground floor ancillary ballroom, event space & meeting rooms, food & beverage facilities, back of house facilities; car, cycle parking & servicing facilities; and up to 88 residential dwellings with ancillary communal amenities, car, cycle parking & servicing; namely, amendments to the Quadrangle courtyard paving, amendments to internal layout of two residential units; installation of additional windows to fifth floor; installation of external grilles to the east and north elevations and submission of details reserved by Condition 13 (vi) (internal finishes, including vehicle and service areas) and 19 (h) (stonework and ironwork gate details).

Amendments to planning permission dated 19 March 2018 (17/09368/FULL) for Variation of Conditions 1, 13, 16, 7(a), 9, 38 & removal of Condition 40 of planning permission dated 10 July 2017 (16/09548/FULL) for; Alterations to the existing building including creation of new entrances; alterations to bottle balustrades & parapets; extensions to create three additional storeys; two additional basement storeys; partial demolition & reconstruction of the central wing; demolition, reconstruction & extensions to the Triangular Courtyard facades; external alterations to Quadrangle facades; creation of external terraces at fourth, fifth, sixth & seventh floor levels; addition of entrance canopies; alterations to security walls & bollards & the removal & replacement of street trees; all in connection with change of use from offices (Class B1) to a hotel (Class C1) comprising up to 125 hotel bedrooms/suites with flexible hotel/retail/restaurant/bar use at part ground floor (Class C1/A1/A3/A4), flexible hotel/restaurant use at part lower ground, part ground & part second floors (Class C1/A3); flexible hotel/bar use at part fifth & part sixth floors (Class C1/A4); flexible retail, leisure, restaurant or bar use at part ground floor (Class A1/D2/C1/A3/A4), leisure/spa facilities within the basement levels & part lower ground floor (Class D2/C1) ancillary ballroom, event space & meeting rooms, food & beverage facilities, back of house facilities & associated car & cycle parking & servicing facilities; creation of up to 88 residential dwellings (Class C3) with ancillary communal amenities, & associated car parking, cycle parking & servicing facilities; namely, amendments to the Quadrangle courtyard paving, amendments to internal layout of two residential units; installation of additional windows to fifth floor; installation of external grilles to the east and north elevations.

Amendments to planning permission dated 26 May 2020 (RN: 19/01472) for: 'Excavation to create a deeper basement level and excavation under Wells Mews, demolition of 58-60 Berners Street and demolition behind retained facade of 14-17 Wells Street and erection of a new mixed use development within two adjoining buildings comprising lower ground, ground plus 5 storeys fronting Wells Street and lower ground, ground plus 7 storeys fronting Berners Street to accommodate flexible retail (Class A1) or financial and professional services (Class A2) or restaurant (Class A3) purposes on part lower ground and part ground floors, office (Class B1) on upper floors and installation of plant behind screening on both roof levels. The scheme also includes external alterations to 14 and 15 Eastcastle Street (part of Woolverstone House) to accommodate a wider and improved entrance into Wells Mews from Eastcastle Street, an upgraded residential entrance to 1 Wells Mews'; NAMELY, changes to the internal layout at lower ground and ground floor levels, removal of bridge and entrance doors to Berners Street retail unit, reduced depth beneath pavement on west side of Wells Mews to accommodate smoke vents, alterations to fenestration, retained roller shutter instead of new louvred access door to Wells Mews, extensions to railings around roof level plant, altered layout of roof level plat and associated alterations.