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Planning application

8 - 9 William Street London SW1X 9HL

Awaiting decision Westminster 25/08437/FULL Full Planning Permission Application

Works: Windows or glazing

Relates to 25/08438/LBC

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

Proposal

Shopfront painting and material finishes; wall mounted heaters and lights and replacement awning. (Linked to 25/08438/LBC)

As published by the council, reference 25/08437/FULL

Application record

Reference
25/08437/FULL
Type
Full Planning Permission Application
Status
Pending
Received
18 Nov 2025
Validated
14 Jan 2026
Ward
Knightsbridge & Belgravia
Postcode
SW1X 9HL

Site history

Applications at this address on the Westminster register

This site has had 6 applications since 2025: 2 approved, 0 refused.

  • 26/02627/ADV Awaiting decision

    8 - 9 William Street London SW1X 9HL

    Display of internally illuminated fascia sign measuring 0.833m X 0.31m and 0.833m X 0.31m

    Submitted 21 Apr 2026 Advertising
  • 26/00188/TCH Awaiting decision

    8 - 9 William Street London SW1X 9HL

    Use of an area of pavement (part public highway and part private forecourt) measuring 3.44 m x 12.68 m for the placing of 8 tables, 24 chairs, 8 planters and a waiter station in connection with the existing ground floor restaurant.

    Submitted 14 Jan 2026
  • 25/08734/FULL Granted

    8 - 9 William Street London SW1X 9HL

    Installation of air conditioning plant and acoustic enclosure to the rear lower ground courtyard. Alterations to the rear lower ground floor elevation.

    Decided 26 Mar 2026 Full applications
  • 25/08735/LBC Granted

    8 - 9 William Street London SW1X 9HL

    Installation of air-conditioning plant and acoustic enclosure to the rear lower ground courtyard. Alterations to the rear lower ground floor elevation.

    Decided 26 Mar 2026 Heritage and listed buildings
  • 25/08438/LBC Awaiting decision

    8 - 9 William Street London SW1X 9HL

    Shopfront painting and material finishes; wall mounted heaters and lights and replacement awning. (Linked to 25/08437/FULL)

    Submitted 18 Nov 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 18 Nov 2025

    Received by Westminster

  2. 14 Jan 2026

    Validated

    Checked as complete and ready for consideration.

  3. 20 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 11 March 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 86 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 25/08438/LBC Awaiting decision

    8 - 9 William Street London SW1X 9HL

    Shopfront painting and material finishes; wall mounted heaters and lights and replacement awning. (Linked to 25/08437/FULL)

    Submitted 18 Nov 2025 Heritage and listed buildings

1 later application on the register refers to this one:

  • 25/08438/LBC Awaiting decision

    8 - 9 William Street London SW1X 9HL

    Shopfront painting and material finishes; wall mounted heaters and lights and replacement awning. (Linked to 25/08437/FULL)

    Submitted 18 Nov 2025 Heritage and listed buildings

Documents

Plans, drawings, consultee responses and the officer's report

26 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

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 full applications in a median of 119 days. More in our guide to how long planning decisions take.

About full applications

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.

Nearby applications

Within 0.3 miles

  • 8 - 9 William Street London SW1X 9HL

    25/08438/LBC Submitted 18 Nov 2025 50 yards away

    90% historically approved · decision due ~11 Mar

    Shopfront painting and material finishes; wall mounted heaters and lights and replacement awning. (Linked to 25/08437/FULL)

    Awaiting decision Heritage and listed buildings Windows or glazing 20 docs

  • 8 - 9 William Street London SW1X 9HL

    26/00188/TCH Submitted 14 Jan 2026 50 yards away

    89% historically approved · decision due ~11 Mar

    Use of an area of pavement (part public highway and part private forecourt) measuring 3.44 m x 12.68 m for the placing of 8 tables, 24 chairs, 8 planters and a waiter station in connection with the existing ground floor restaurant.

    Awaiting decision 18 docs

  • 8 - 9 William Street London SW1X 9HL

    25/08735/LBC Submitted 1 Dec 2025 50 yards away

    Installation of air-conditioning plant and acoustic enclosure to the rear lower ground courtyard. Alterations to the rear lower ground floor elevation.

    Granted Heritage and listed buildings 16 docs

  • 8 - 9 William Street London SW1X 9HL

    25/08734/FULL Submitted 1 Dec 2025 50 yards away

    Installation of air conditioning plant and acoustic enclosure to the rear lower ground courtyard. Alterations to the rear lower ground floor elevation.

    Granted Full applications 21 docs

  • 5 - 6 William Street London SW1X 9HL

    25/04470/LBC Submitted 30 Jun 2025 50 yards away

    Installation of seven new French doors with fanlights at front elevation facing William Street; three pairs of sash windows into existing timber box frames; one new single door, including a sidelight and fanlight at rear elevation; and other associated works to first floor.

    Granted Heritage and listed buildings Windows or glazing 18 docs

  • Pavement outside The Park Tower Casino, 101 Knightsbridge, London, SW1X 7RQ

    CA/21/03557 Submitted 31 May 2021 50 yards away

    Installation of 1no. new BT Street Hub, incorporating 2no. digital 75 LCD advert screens, plus removal of associated BT kiosk(s). 2no. digital 75 LCD display screens, one on each side of the Street Hub unit.

    Refused Advertising 17 docs

In Westminster

  • 26/05984/FULL Decided

    41 Sutherland Street London SW1V 4JX

    Replacement of front, side and rear windows with double glazed timber framed sash windows and replacement of a door with a double glazed timber framed door.

    Received 2 Sep, published by the council 11 Sep 2026 Full applications
  • 26/07229/FULL Awaiting decision

    5 D'arblay Street London W1F 8DL

    Painting of the shopfront facade and alterations to the existing fixed windows to form two openable sash windows. (Linked with 26/07230/ADV)

    Received 22 Oct, published by the council 26 Oct 2026 Full applications
  • 26/07224/FULL Awaiting decision

    8 Hinde Street London W1U 3BQ

    Use of the building as an Embassy (sui generis) with reversion to Class E on cessation of occupation by the Government of the United Mexican States. Erection of a flagpole to front elevation.

    Received 22 Oct, published by the council 26 Oct 2026 Full applications
  • 26/06134/FULL Decided

    Flat 10H Hyde Park Mansions Cabbell Street London NW1 5BG

    Replacement of front and rear second floor level windows with slim-profile double-glazed panels, retaining the existing window and door frames.

    Received 8 Sep, published by the council 15 Sep 2026 Full applications
  • 26/07258/FULL Awaiting decision

    16A Croxley Road London W9 3HL

    Installation of air to air heat pumps to offices and bedrooms.

    Received 22 Oct, published by the council 23 Oct 2026 Full applications