Planning applications in W1H

11 - 17 Seymour Street London W1H 7JW

External refurbishment of the Leonard Hotel comprising replacement of existing entrance steps with limestone, alterations to the front entrance doors through the introduction of glazing and panes, erection of a small canopy above the restaurant entrance, and replacement of the existing canopy in burgundy. (Linked to 26/03935/FULL)

11 - 17 Seymour Street London W1H 7JW

External refurbishment of the Leonard Hotel comprising replacement of existing entrance steps with limestone, alterations to the front entrance doors through the introduction of glazing and panes, erection of a small canopy above the restaurant entrance, and replacement of the existing canopy in burgundy. (Linked to 26/03936/LBC)

15 - 16 Montagu Mews South London W1H 7ET

Details of all new windows, omission of the rooflight to the front roof slope conservation rooflight and main door pursuant to conditions 4, 5 and 6 of planning permission dated 7th May 2026 (RN:26/00330).

Halcyon London International School 33 Seymour Place London W1H 5AP

Display of one non illuminated fascia sign measuring 1.25m x 5.5m and one non illuminated projecting sign meauring 5m x 0.75m.

Flat 4 58 Montagu Square London W1H 2LS

Detailed drawings of the new doors pursuant to condition 3 of listed building consent dated 11th September 2025 (RN:25/04771).

Hotel Bryanston Street London W1H 7EH

Display of two internally illuminated fascia sign measuring 10m x 0.5m.

11 Montagu Mews South London W1H 7ER

Installation of replacement existing windows with double glazed units to improve the thermal performance of the property.

Flat 2 68 Upper Berkeley Street London W1H 7QY

Internal alterations to the first floor flat with the inclusion of a new boiler flue penetration to the rear addition. (Linked to 26/03378/FULL)

Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

Refurbishment works to include: removal of the redundant swimming pool tank to facilitate the fitness suite at lower ground floor, relining the existing pool tank, installation of photovoltaics on the inner roof slope, removal of the existing roof lanterns and wind catchers in the sports hall to be replaced with new double glazed roof lanterns and wind catchers and installation of secondary glazing to all the windows in the sports hall, removal of roof lantern above swimming pool to be replaced with a new double glazed roof lantern, retention of the existing courtyard and internalisation of the lower ground level with a flat roof covering, removal of roof lanterns above the martial arts studio to be replaced with double glazed roof lanterns, removal and replacement of existing plant including new ductwork and flue, installation of roof plant enclosures, provision of external private roof terrace (restricted access), removal of existing roof lanterns to northwest and northeast of roof to be replaced with flat roof covering, removal and replacement of existing flat roof coverings, installation of access and maintenance gantries, ladders and stairs on roof, removal of windows to community studio and infill, minor internal alterations to walls and partitions to facilitate the reconfiguration of uses, installation of new handrail balustrades on 4 corner stairs of sports hall, improve accessibility with one lift in each core (4 lifts in total plus three platform lifts at first floor) and two new internal upper staircases on the eastern elevation plus two new internal staircases on the south-west of the first floor, external alterations to some windows, doors and fenestrations replacement of asphalt covering to perimeter lightwell with new covering, removal of some mosaic tiles to create level access to the sports hall flooring, removal and replacement of some ceiling, provision of new chemical delivery hoist from street level to lower ground floor at Bryanston Place.

Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

Amendments to planning permission dated 6th February 2024 (RN:23/07813/COFUL) for: 'Variation of condition 1 of planning permission dated 17 July 2023 (RN:23/02017/COFUL) for the Refurbishment and upgrade of the Seymour Centre to provide leisure, swimming pool, library, flexible community/office space, health and fitness studios, beauty treatment rooms and a cafe. Flexible use for leisure, community and events spaces (Sui Generis)'. Namely, to allow enlargement sprinkler tank, relocation of services, refurbishments and associated works at lower ground, ground, first and second floors. (Linked with 26/03371/COLBC)

Flat 2 68 Upper Berkeley Street London W1H 7QY

Internal alterations to the first floor flat with the inclusion of a new boiler flue penetration to the rear addition. (Linked to 26/03379/LBC)

Seymour Hall Swimming Baths Seymour Place London W1H 5TJ

Erection of flue on roof

9 Upper Berkeley Street London W1H 7QA

Installation of a new boosted cold water system within the existing basement vault area, including replacement of the existing vault door with a painted timber louvred door to match existing.

8 Montagu Mews West London W1H 2EE

Roof extension, installation of air conditioning unit in an acoustic enclosure, alterations to the front and rear facades and associated works.

26 Upper Montagu Street London W1H 1RP

Erection of a one and a half storey rear extension tp enlarge HMO, installation of replacement windows and installation of balcony railings.

1 Portman Square London W1H 6DG

Installation of two new freestanding air conditioning condensers in acoustic enclosures installed at bottom of lightwell.

18 Seymour Street London W1H 7HU

Details of the repairs and upgrading of the rear oriel window pursuant to condition 5 of listed building consent dated 8th August 2023 (RN:23/02367).

St Mary's C Of E Primary School Enford Street London W1H 1DL

T1 - Magnolia grandiflora - Remove to ground level. Tree is very close to the building and is covering solar panels on the roof. T2 - Tree of heaven - reduce back to previous pruning points and remove basal growth to maintain size and reduce wind sail. From approx 14 metres to 10 metres. T3 - Tree of heaven - reduce back to previous pruning points and remove basal growth to maintain size and reduce wind sail. From approx 14 metres to 10 metres. T4 - olive tree - cut back from building to provide clearance and reduce shade on solar panels from approx 6 metres to 4 metres. T5 - Acer - reduce back to previous pruning points to maintain size and reduce wind sail. From approx 12 metres to 9 metres. T6 - Acer - reduce back to previous pruning points to maintain size and reduce wind sail. From approx 12 metres to 9 metres.

14 - 22 Old Quebec Street London W1H 7AF

Proposed alterations to shopfronts

Marble Arch At Marble Arch London W1H 7DX

Detailed deconstruction and disassembly strategy pursuant to condition 12 of planning permission dated 18th February 2026 (RN:25/06615).

10 Wythburn Court Seymour Place London W1H 7NS

The replacement of three rooflights with two lead clad dormers with full height windows and juliet balcony.

6 - 11 Harcourt Street London W1H 4AG

Upgrading of Fire doors and creation of fire separating lobbies between different use classes.

3 Great Cumberland Mews London W1H 7DZ

Removal of Condition 7 of planning permission dated 16th April 2026 (RN: 25/08713/FULL) to remove the requirement to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site.

3 Great Cumberland Mews London W1H 7DZ

Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 7 of planning permission dated 16th April 2026 (RN:25/08713/FULL)

Ground Floor 3 Fitzhardinge Street London W1H 6EF

Internal alterations including one new glazed partition off the existing space creating a new meeting room.

Flat 3 Bryanston Court 133 George Street London W1H 7HA

Like-for-like replacement of nine windows.

43 - 45 Portman Square London W1H 6LY

Amendments to planning permission dated 22nd April 2026 (RN:25/06153/FULL) for: Variation of Condition 1 of planning permission dated 7th April 2025 (RN: 24/04987/FULL) for: Partial demolition of the existing roof and removal of plant equipment; construction of a roof extension providing new office (Class E) floorspace with associated external amenity spaces and plant equipment; refurbishment of the existing building, including infilling of the existing atrium; alterations to the existing façade; provision of cycle parking spaces and end of journey facilities, and all associated and ancillary works namely, amendments to mansard roof and rear façades; alterations to skylights and access doors to terraces; alterations to Portman Mews and Orchard Street elevations and to main entrance; alterations to louvres and to internal layout.

Marble Arch At Marble Arch London W1H 7DX

Display of one internally illuminated fascia sign measuring 5m x 1.8m; two internally illuminated lightboxes measuring 5m x 1.8m; one LED screen measuring 4.8m x 3.6m; two externally illuminated panel signs measuring 10m x 0.6m; two externally illuminated fascia signs measuring 5m x 1.8m; two internally illuminated light trays measuring 1.3m x 0.75m; ten internally illumnated poster boxes measuring 0.3m x 0.42m; and an internally illuminated fascia sign measuring 1.4m x 1.4m.

28 Bryanston Square London W1H 2DT

Installation of secondary glazing to the internal reveals of existing historic single glazed timber windows.

23 Montagu Square London W1H 2LF

Submission of a post-commissioning noise survey pursuant to Condition 7 of planning permission dated 26th February 2025 (RN: 25/01296/FULL).

2 Portman Square London W1H 6LA

Display of one internally illuminated fascia sign measuring 0.91m x 5.2m.

27 Wyndham Street London W1H 1DD

Repairs to the basement and lower ground floor

31 Crawford Place London W1H 4LL

Display for a temporary period of six months of a non-illuminated 'to let' board attached to the railings in front of the building at street level and measuring 0.6 x 0.45m.

10 Bryanston Mews West London W1H 2DD

Retention of one external air conditioning unit and installation of louvred timber enclosure at rear lower-ground-floor level.

37 Great Cumberland Place London W1H 7TD

Detailed drawings of samples and specification details of the facing materials including glazing pursuant to condition 7 of planning permission dated 15th October 2020 (RN 20/03650/FULL)

Marble Arch At Marble Arch London W1H 7DX

Amendments to planning permission dated 18th February 2026 (RN:25/06615/FULL) for Use of part of Marble Arch Island as a temporary theatre event space with associated structures and works. Namely, small decrease in the overall length of the building, small increase in its overall height and width, addition of a small 'service yard' at the rear of the building, change to material/construction of upper façade.

9 Montagu Mews West London W1H 2EE

Installation of air conditioning condenser unit and acoustic enclosure to roof.

3 Wyndham Place London W1H 2PR

Detailed drawing off elevation and sections of each window type, demonstrating traditional joinery, pursuant to condition 4 (part i) of planning permission dated 28th March 2025 (RN 25/00686/FULL)

3 Wyndham Place London W1H 2PR

Detailed drawing off elevation and sections of each window type, demonstrating traditional joinery, pursuant to condition 4 (part i) of Listed Building Consent dated 28th March 2025 (RN 25/00687/LBC)

5 Fitzhardinge Street London W1H 6ED

Details of all new and replacement window types with details including glazing bar profiles at 1:2 or 1:1, including any existing context for comparison, detailed sections and showing the context of the existing brick reveal, details of glazing bars and existing and proposed sections, detail must be provided which should include timber frames that are in keeping with historic timber profiles found at the building, details of the dimensions of the ASHP and details of the materiality and treatment of the associated acoustic enclosure in the form of photographs, condition surveys, method statements and details (as specified below) prior to commencing works in relation to the existing and proposed floor build ups, strategy for historic floor boards - floor boards detailed repair written methodology to demonstrate that any associated works would be sensitively carried out without harm to historic fabric and the special interest, existing condition survey and heritage assessment, and proposed drawings of the rear french door at first floor of the principal building, which must be sympathetic to the special interest of the building, A survey schedule of existing fireplaces with a method statement for their repair and refurbishment and details of any new proposed railings at rear courtyard pursuant to conditions 6, 7, 8, 9, 10, 11 (a-d) and 12 of listed building consent dated 22nd April 2025 (RN:24/05919/LBC)

5 Fitzhardinge Street London W1H 6ED

Details of new and replacement window types with details including glazing bar profiles at 1:2 or 1:1, including any existing context for comparison, detailed sections and showing the context of the existing brick reveal, details of glazing bars and existing and proposed section, detail must be provided which should include timber frames that are in keeping with historic timber profiles found at the building. Drawings must be provided at 1:10 and glazing bar details, details of the dimensions of the ASHP and details of the materiality and treatment of the associated acoustic enclosure in the form of photographs, condition surveys, method statements and details (as specified below) prior to commencing works in relation to the existing condition survey and heritage assessment, and proposed drawings of the rear french door at first floor of the principal building, which must be sympathetic to the special interest of the building and details of any new proposed railings at rear courtyard pursuant to conditions 3, 4, 5, 6, 7 and 8 of planning permission dated 22nd April 2025 (RN:24/05918/FULL)

12 - 14 Harcourt Street London W1H 4HD

Extension of and improvements to the existing ground floor terrace to the rear, modification to entrances, installation of security access gate, other associated external works and the installation of new signage. [Linked to 26/02158/ADV]

12 - 14 Harcourt Street London W1H 4HD

Display of two non-illuminated fascia signs measuring 0.31m x 1.98m and 0.46m x 3m. [Linked to 26/02157/FULL]

Flat 32 Bryanston Court 133 George Street London W1H 7HB

Installation of condensing unit at second floor level.

Flat 35 Bryanston Court 133 George Street London W1H 7HB

Installation of condensing unit at fourth floor level.

27 Bryanston Square London W1H 2DT

Installation of secondary glazing to single glazed existing windows and the replacement of one door to an existing roof terrace. (Linked with 26/02092/LBC)

27 Bryanston Square London W1H 2DT

Installation of secondary glazing to single glazed existing windows and the replacement of one door to an existing roof terrace. (Linked with 26/02091/FULL)

11 Upper Berkeley Street London W1H 7QB

Reconstruction of an existing chimney stack at roof level.

Marble Arch At Marble Arch London W1H 7DX

Details of Construction Logistics Plan pursuant to discharge of condition 11 of planning permission dated 18th February 2026 (RN:25/06615/FULL ).

14 Montagu Place London W1H 2ET

Details of samples(photos acceptable) colour and specification details of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located and detailed drawings of the new windows pursuant to condition 3 and 4 of planning permission dated 22nd July 2025 (RN:24/02626/FULL)