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 66 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 91 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

• 5 - 10 Beaumont Street London W1G 6AA

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

  87% 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

• 7 Dunstable Mews London W1G 6BT

  05/02852/AD7 Submitted 12 Apr 2005 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 0.9m by 0.6m.

  Granted Advertising 3 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront with Medication Dispensing Outlet.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06297/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Alterations to rear elevation at basement level comprising replacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06294/FULL Awaiting decision

  15 Eaton Mews South London SW1W 9HP

  Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

  Received 15 Sep, published by the council 22 Sep 2026 Full applications
• 26/06317/FULL 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 26/06318/LBC)

  Received 15 Sep, published by the council 22 Sep 2026 Full applications
• 26/06273/FULL Awaiting decision

  9A Grosvenor Square London W1K 5AE

  Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

  Received 14 Sep, published by the council 22 Sep 2026 Full applications