Details of Condition 8 'Archaeological Public Engagement' pursuant to planning permission 21/AP/0960: Minor material amendment to planning permission 19/AP/1173 (Construction of a seven storey extension to the rear (from ground to sixth floor- the ground floor being an under croft) and two additional storeys with terraces to the existing five storey building for the retention of A1 (retail) on the ground floor and increased B1 (office) floorspace on the upper floors to create a seven storey building across the footprint of the whole site.) Changes include: - Construction of a single storey extension at ground floor level to the rear; - New wall at ground floor level to the west and north elevation; - Raised cil level at 6th floor; - Fenestration changes, including additional windows to the east elevation at ground floor level; - Changes to the tower design, removal of glazed corner cube; - Revised plant configuration at roof level; - New staircore, lift overrun and smoke extract at roof level; - Areas at roof reserved for photovoltaics and green roof; - Creation of a new basement level to accommodate a new sprinkler tank/plant.

Details of Condition 9 'Post Excavation Assessment Report' pursuant to planning permission 21/AP/0960: Minor material amendment to planning permission 19/AP/1173 (Construction of a seven storey extension to the rear (from ground to sixth floor- the ground floor being an under croft) and two additional storeys with terraces to the existing five storey building for the retention of A1 (retail) on the ground floor and increased B1 (office) floorspace on the upper floors to create a seven storey building across the footprint of the whole site.) Changes include: - Construction of a single storey extension at ground floor level to the rear; - New wall at ground floor level to the west and north elevation; - Raised cil level at 6th floor; - Fenestration changes, including additional windows to the east elevation at ground floor level; - Changes to the tower design, removal of glazed corner cube; - Revised plant configuration at roof level; - New staircore, lift overrun and smoke extract at roof level; - Areas at roof reserved for photovoltaics and green roof; - Creation of a new basement level to accommodate a new sprinkler tank/plant.

Details of Condition 18 'Construction Details' pursuant to planning permission ref. 21/AP/0960: 'Minor material amendment to planning permission 19/AP/1173 (Construction of a seven storey extension to the rear (from ground to sixth floor- the ground floor being an under croft) and two additional storeys with terraces to the existing five storey building for the retention of A1 (retail) on the ground floor and increased B1 (office) floorspace on the upper floors to create a seven storey building across the footprint of the whole site.) Changes include: - Construction of a single storey extension at ground floor level to the rear; - New wall at ground floor level to the west and north elevation; - Raised cil level at 6th floor; - Fenestration changes, including additional windows to the east elevation at ground floor level; - Changes to the tower design, removal of glazed corner cube; - Revised plant configuration at roof level; - New staircore, lift overrun and smoke extract at roof level; - Areas at roof reserved for photovoltaics and green roof; - Creation of a new basement level to accommodate a new sprinkler tank/plant.'

Details of Condition 14 'Written confirmation from the appointed building control body' as required by planning permission ref. 21/AP/1277: 'Variation of Condition 2 (Approved Plans) pursuant to planning permission 17/AP/0907 for 'Demolition of single storey office building and a derelict three-storey row of shops and flats above (with the retention of the original Victorian facade), and the construction of a six storey building (behind retained facade) comprising 56 flats (30 x social rented and 26 x private) above a health centre/office space (745sqm)(Use Class D1/B1), pharmacy/shop (85sqm)(Use Class A1) and cafe (285sqm)(Use Class A3), with associated landscaping and public realm works'. The amendment seeks the following: to take down the existing terrace facade and rebuild and replicate the Victorian façade on the front of the new building and amendments to the approved window designs for the window fenestrations in order to provide opening windows to habitable rooms.'

Details of Condition 10 'Detailed Drawings' pursuant to planning permission ref. 21/AP/0960: 'Minor material amendment to planning permission 19/AP/1173 (Construction of a seven storey extension to the rear (from ground to sixth floor- the ground floor being an under croft) and two additional storeys with terraces to the existing five storey building for the retention of A1 (retail) on the ground floor and increased B1 (office) floorspace on the upper floors to create a seven storey building across the footprint of the whole site.) Changes include: - Construction of a single storey extension at ground floor level to the rear; - New wall at ground floor level to the west and north elevation; - Raised cil level at 6th floor; - Fenestration changes, including additional windows to the east elevation at ground floor level; - Changes to the tower design, removal of glazed corner cube; - Revised plant configuration at roof level; - New staircore, lift overrun and smoke extract at roof level; - Areas at roof reserved for photovoltaics and green roof; - Creation of a new basement level to accommodate a new sprinkler tank/plant.'

Details of Condition 11 (Green Roofs For Biodiversity) as required by planning permission dated 21/03/2022 [LBS Ref: 21/AP/0960] for 'Minor material amendment to planning permission 19/AP/1173 (Construction of a seven storey extension to the rear (from ground to sixth floor- the ground floor being an under croft) and two additional storeys with terraces to the existing five storey building for the retention of A1 (retail) on the ground floor and increased B1 (office) floorspace on the upper floors to create a seven storey building across the footprint of the whole site.) Changes include: - Construction of a single storey extension at ground floor level to the rear; - New wall at ground floor level to the west and north elevation; - Raised cil level at 6th floor; - Fenestration changes, including additional windows to the east elevation at ground floor level; - Changes to the tower design, removal of glazed corner cube; - Revised plant configuration at roof level; - New staircore, lift overrun and smoke extract at roof level; - Areas at roof reserved for photovoltaics and green roof; - Creation of a new basement level to accommodate a new sprinkler tank/plant'.

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'.

Details of Condition 13 Ventilation as required by planning permission 21/AP/1277 dated 21/9/2021 for variation of Condition 2 (Approved Plans) pursuant to planning permission 17/AP/0907 for 'Demolition of single storey office building and a derelict three-storey row of shops and flats above (with the retention of the original Victorian facade), and the construction of a six storey building (behind retained facade) comprising 56 flats (30 x social rented and 26 x private) above a health centre/office space (745sqm)(Use Class D1/B1), pharmacy/shop (85sqm)(Use Class A1) and cafe (285sqm)(Use Class A3), with associated landscaping and public realm works'. The amendment seeks the following: to take down the existing terrace facade and rebuild and replicate the Victorian façade on the front of the new building and amendments to the approved window designs for the window fenestrations in order to provide opening windows to habitable rooms.

Details of Condition 12 Plant noise as required by planning permission 21/AP/1277 dated 21/9/2021 for variation of Condition 2 (Approved Plans) pursuant to planning permission 17/AP/0907 for 'Demolition of single storey office building and a derelict three-storey row of shops and flats above (with the retention of the original Victorian facade), and the construction of a six storey building (behind retained facade) comprising 56 flats (30 x social rented and 26 x private) above a health centre/office space (745sqm)(Use Class D1/B1), pharmacy/shop (85sqm)(Use Class A1) and cafe (285sqm)(Use Class A3), with associated landscaping and public realm works'. The amendment seeks the following: to take down the existing terrace facade and rebuild and replicate the Victorian façade on the front of the new building and amendments to the approved window designs for the window fenestrations in order to provide opening windows to habitable rooms.

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.