Skip to content
PlanIndex Get alerts
Menu

Planning application

Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

Awaiting decision Westminster 26/00337/COLBC LBC Applic. Council's Own Dev.

Works: Extension Roofing Windows or glazing

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

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.

As published by the council, reference 26/00337/COLBC

Application record

Reference
26/00337/COLBC
Type
LBC Applic. Council's Own Dev.
Status
Pending
Received
21 May 2026
Validated
21 May 2026
Ward
Marylebone
Postcode
W1H 5TJ

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2025: 2 approved, 0 refused.

  • 26/03372/NMA Awaiting decision

    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)

    Submitted 21 May 2026 Amendments
  • 25/05358/COGADF Granted

    Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

    Details of construction drawings at 1:10 of rooflights to the swimming pool and martial arts studio pursuant to condition 3 (part) of planning permission dated 6th February 2024 (RN:23/07813/COFUL)

    Decided 18 Aug 2025 Full applications
  • 25/05266/COMADL Granted

    Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

    Detailed construction drawings at 1:10 with full size details of the all new secondary glazing pursuant to condition 3 of listed building dated 17th July 2025 (RN:25/02196/COLBC)

    Decided 19 Aug 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 21 May 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 16 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Westminster took a median of 66 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Collective Planning Limited Agent, a planning consultancy registered in London

Active · incorporated 2016 · London

15 applications on PlanIndex · across 5 councils

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

What happens while it is decided

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 94 days. More in our guide to how long planning decisions take.

About heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

    26/03372/NMA Submitted 21 May 2026 50 yards away

    93% historically approved · decision due ~16 Jul

    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)

    Awaiting decision Amendments 1 doc

  • Seymour Hall Swimming Baths Seymour Place London W1H 5TJ

    22/03922/COLBC Submitted 16 Jun 2022 50 yards away

    Installation of a pool cover to swimming pool.

    Granted Heritage and listed buildings 15 docs

  • Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

    25/05358/COGADF Submitted 31 Jul 2025 50 yards away

    Details of construction drawings at 1:10 of rooflights to the swimming pool and martial arts studio pursuant to condition 3 (part) of planning permission dated 6th February 2024 (RN:23/07813/COFUL)

    Granted Full applications Loft or dormer 16 docs

  • Ground Floor Seymour Leisure Centre Seymour Place London W1H 5TJ

    25/05266/COMADL Submitted 28 Jul 2025 50 yards away

    Detailed construction drawings at 1:10 with full size details of the all new secondary glazing pursuant to condition 3 of listed building dated 17th July 2025 (RN:25/02196/COLBC)

    Granted Heritage and listed buildings Windows or glazing 23 docs

  • Seymour Hall Swimming Baths Seymour Place London W1H 5TJ

    26/03293/COFUL Submitted 19 May 2026 50 yards away

    87% historically approved · decision due ~14 Jul

    Erection of flue on roof

    Awaiting decision Full applications 16 docs

  • 14 Shouldham Street London W1H 5FJ

    08/03356/LBC Submitted 14 Apr 2008 50 yards away

    Internal alterations, extensions at lower ground, ground, first and roof level, demolition of existing basement and ground floor extensions.

    Withdrawn Heritage and listed buildings Extension Demolition 2 docs

In Westminster

  • 26/04878/LBC Decided

    34 Grosvenor Street London W1K 4QU

    Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

    Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
  • 26/06299/LBC Awaiting decision

    Apartment 33 24 Park Crescent London W1B 1AA

    Alterations to internal partitions, door openings, doors and floor finishes.

    Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
  • 26/06305/LBC Awaiting decision

    33A Dean Street London W1D 4PP

    Installation of new concrete slab with drainage channels at basement level and new fire surround in B.01.

    Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
  • 26/06318/LBC Awaiting decision

    124 Hamilton Terrace London NW8 9UT

    Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06317/FULL)

    Received 15 Sep, published by the council 22 Sep 2026 Heritage and listed buildings
  • 26/04141/LBC Decided

    80E Randolph Avenue London W9 1BG

    Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

    Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings