4 Clarke's Mews London W1G 6QN

1. 4 Aug 2025

   Received by Westminster

2. 10 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 21 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 5 November 2025, 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 91 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 119 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 24 Upper Wimpole Street London W1G 6NE

  25/07755/ADFULL Submitted 27 Oct 2025 50 yards away

  Details of code of construction practice pursuant to condition 10 of planning permission dated 4th November 2024 (RN: 23/08773/FULL)

  Granted Full applications 8 docs

• 24 Upper Wimpole Street London W1G 6NE

  26/01039/ADFULL Submitted 18 Feb 2026 50 yards away

  Detailed drawings of all new windows including rooflights and external doors drawn at a scale of 1:10 with full size sections through mouldings and glazing bars and the new garage doors (ground floor new fenestration) drawn at a scale of 1:20 with full size details, details of samples of the facing materials you will use, including glazing, and elevations and roof plans annotated to show where the materials are to be located, detailed drawings and a bio-diversity management plan in relation to the green roof, details of a sample of the glass (at least 300mm square) and details of how waste is to be stored on site and how materials for recycling will be stored separately pursuant to Cconditions 3, 5, 9, 11, 14 and 16 of planning permission dated 4th November 2024 (RN: 23/08773/FULL)

  Granted Full applications Loft or dormer Windows or glazing 21 docs

• 24 Upper Wimpole Street London W1G 6NE

  26/06815/CLEUD Submitted 6 Oct 2026 50 yards away

  84% historically approved · decision due ~1 Dec

  Confirmation that the pottery studio at front lower ground floor level is lawfully part of the main dwellinghouse (Class C3).

  Awaiting decision Lawful development
  Domestic

• 5 - 10 Beaumont Street London W1G 6AA

  26/04145/FULL Submitted 23 Jun 2026 50 yards away

  88% historically approved · decision due ~27 Aug

  Replacement and installation of four louvres to the western elevation at basement level, removal of some existing plant and introduction of five new condensers within the lightwell at basement level and a further chiller unit within enclosure at roof level.

  Awaiting decision Full applications 22 docs

• Flat 2 19 Upper Wimpole Street London W1G 6LY

  25/06205/LBC Submitted 1 Sep 2025 50 yards away

  Installation of a new slim double-glazed timber window, painted white within the existing retained window frame fronting the internal courtyard. (Linked to 25/06204/FULL)

  Granted Heritage and listed buildings Windows or glazing 17 docs

• Flat 2 19 Upper Wimpole Street London W1G 6LY

  25/06204/FULL Submitted 1 Sep 2025 50 yards away

  Installation of a new slim double-glazed timber window, painted white within the existing retained window frame fronting the internal courtyard.

  Granted Full applications Windows or glazing 20 docs

• 26/07528/FULL Awaiting decision

  69 Eaton Place London SW1X 8DF

  Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

  Received 5 Nov, published by the council 6 Nov 2026 Full applications
• 26/05200/FULL Decided

  1 The Court House 165 Seymour Place London W1H 4PU

  Installation of waterproofing system to the existing lead flat roofs

  Received 3 Aug, published by the council 28 Aug 2026 Full applications
• 26/07521/FULL Awaiting decision

  Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

  Installation of one external condenser unit

  Received 4 Nov, published by the council 6 Nov 2026 Full applications
• 26/07508/FULL Awaiting decision

  Buckingham Palace The Mall London SW1A 1AA

  Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

  Received 4 Nov, published by the council 5 Nov 2026 Full applications
• 26/07472/FULL Awaiting decision

  Flat 3 82 New Cavendish Street London W1G 9TA

  Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

  Received 3 Nov, published by the council 6 Nov 2026 Full applications