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Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

26/00337/COLBCLBC Applic. Council's Own Dev.Awaiting decision
Listed building consent
Site boundary (council red line)

Proposal

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.

Received
21 May 2026
Decision due
16 July 2026
Ward
Marylebone
Agent
Collective Planning
  1. Received21 May
  2. Validated21 May
  3. Consult.
  4. Target16 Jul
  5. Decided

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About this application

This is a heritage application for window replacement at Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ. Westminster has handled 2,677 applications of this type. It has been with the council since 21 May 2026 and is still awaiting a decision. The site is in 5 listed buildings nearby. There have been 3 other applications at this address. In the past year there have been 168 applications across Marylebone. We hold 899 applications in total for the W1H postcode area.

93% of heritage applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
W1H 5TJ
Application type
LBC Applic. Council's Own Dev.
Scale / size
Small

Planning application dates

Date validated
21 May 2026

Applicant and agent

Agent
Collective Planning
Agent address
124 City Road London EC1V 2NX United Kingdom

Planning decision

Statutory period
56 days

Additional information

Planning Portal ID
PP-14783674
Comments
0
Documents
0

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Listed building: Grade II: Seymour Leisure CentreOn this site
  • Article 4 direction: Article 4 Basement Development Permitted Rights Removed
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)

flood storage areas, conservation areas, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Associated applications

  1. 2026
    21 May

    Refurbishment works to include: removal of the redundant swimming pool tank to facilitate the fitness suite…

    This applicationPendingHeritage26/00337/COLBC
  2. 2026
    21 May

    Amendments to planning permission dated 6th February 2024 (RN:23/07813/COFUL

    ApprovedNon-material amendmentFiled alongside26/03372/NMA

Source: Westminster

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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Before the decision

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This is an application for listed building consent.

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