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Planning application

1 Cavendish Square London W1G 0LA

Granted Westminster 26/00756/ADV Advert Application (ADV)

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Display of 1x non-illuminated surface mounted low level sign adjacent to the entrance door measuring 1.2m x 0.9m 1x halo illuminated fascia sign measuring 2.2m x 0.65m and two internally illuminated hanging signs measuring 1m x 0.8m

As published by the council, reference 26/00756/ADV

Application record

Reference
26/00756/ADV
Type
Advert Application (ADV)
Status
Decided
Decision
Granted As published: Application Permitted
Received
9 Feb 2026
Validated
27 Feb 2026
Decided
29 Apr 2026
Ward
West End
Decision by
Delegated Decision
Postcode
W1G 0LA

Site history

Applications at this address on the Westminster register

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

  • 25/07814/LBC Granted

    1 Cavendish Square London W1G 0LA

    Installation of fibre optic cables along the lightwell street wall in existing tray work into basement comms room.

    Decided 19 Feb 2026 Heritage and listed buildings
  • 25/06203/FULL Granted

    1 Cavendish Square London W1G 0LA

    Variation of Condition 13 of planning permission dated 20th April 2023 (RN: 22/07690/FULL) for the Opening up to basement areas, lowering of floor in pavement vaults and corridors to increase the useable space, additional opening up to eastern ground floor area, forming of services voids to accommodate plant and equipment, reopening of existing skylight apertures to existing pitched roof for ventilation of services, alterations to eastern facade to accommodate a new plant deck, WC accommodation and small terrace, in -connection with the use of building as a restaurant/drinking establishment (Sui Generis) namely, to extend hours of opening. Application under S73 of the Act

    Decided 27 Oct 2025 Full applications
  • 25/05570/ADLBC Granted

    1 Cavendish Square London W1G 0LA

    Details of new windows and roof lights pursuant to Condition 5(B) PART of Listed Building Consent dated 03 September 2024 (RN23/08101/LBC)

    Decided 4 Nov 2025 Conditions
  • 25/04627/LBC Granted

    1 Cavendish Square London W1G 0LA

    Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).

    Decided 16 Sep 2025 Heritage and listed buildings
  • 25/04626/FULL Granted

    1 Cavendish Square London W1G 0LA

    Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).

    Decided 16 Sep 2025 Full applications

Timeline

Dates from the published record

  1. 9 Feb 2026

    Received by Westminster

  2. 27 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 29 Apr 2026

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Osel Architecture Ltd. Agent, an architecture practice registered in London

Active · incorporated 1996 · London

30 applications on PlanIndex · across 7 councils · 94% granted

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

Documents

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

12 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.

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What this grant of permission means

Westminster granted permission on 29 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About advertisement consent applications

Advertisement consent is judged on two things only: amenity and public safety, not competition or other planning considerations. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 1 Cavendish Square London W1G 0LA

    25/07814/LBC Submitted 28 Oct 2025 50 yards away

    Installation of fibre optic cables along the lightwell street wall in existing tray work into basement comms room.

    Granted Heritage and listed buildings 9 docs

  • 1 Cavendish Square London W1G 0LA

    25/06203/FULL Submitted 1 Sep 2025 50 yards away

    Variation of Condition 13 of planning permission dated 20th April 2023 (RN: 22/07690/FULL) for the Opening up to basement areas, lowering of floor in pavement vaults and corridors to increase the useable space, additional opening up to eastern ground floor area, forming of services voids to accommodate plant and equipment, reopening of existing skylight apertures to existing pitched roof for ventilation of services, alterations to eastern facade to accommodate a new plant deck, WC accommodation and small terrace, in -connection with the use of building as a restaurant/drinking establishment (Sui Generis) namely, to extend hours of opening. Application under S73 of the Act

    Granted Full applications 19 docs

  • 1 Cavendish Square London W1G 0LA

    25/04627/LBC Submitted 4 Jul 2025 50 yards away

    Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).

    Granted Heritage and listed buildings 16 docs

  • 1 Cavendish Square London W1G 0LA

    25/04626/FULL Submitted 4 Jul 2025 50 yards away

    Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).

    Granted Full applications 20 docs

  • 1 Cavendish Square London W1G 0LA

    25/05570/ADLBC Submitted 8 Aug 2025 50 yards away

    Details of new windows and roof lights pursuant to Condition 5(B) PART of Listed Building Consent dated 03 September 2024 (RN23/08101/LBC)

    Granted Conditions Loft or dormer Windows or glazing 7 docs

  • Fourth Floor 2 Cavendish Square London W1G 0PU

    26/05967/LBC Submitted 1 Sep 2026 50 yards away

    90% historically approved · decision due ~3 Nov

    Installation of internal secondary glazing to the 4th-floor windows, with internal reversible, non-destructive fixings into the window reveals, and slimline units to maintain background ventilation and prevent interstitial condensation.

    Awaiting decision Heritage and listed buildings Windows or glazing

In Westminster

  • 26/06296/ADV Awaiting decision

    15 Warwick Way London SW1V 1QT

    Display of Individual soft halo externally illuminated individual brass letters on fascia. Display of externally illuminated hanging sign measuring 40mm x 40mm, including Gilded vinyl decal.

    Received 15 Sep, published by the council 17 Sep 2026 Advertising
  • 26/06070/ADV Granted

    36 Shepherd Market London W1J 7QR

    Display of non-illuminated screen-printed signage to the fabric and valance of retractable canvas awning.

    Received 7 Sep, published by the council 11 Sep 2026 Advertising
  • 26/05573/ADV Decided

    1 The Piazza Covent Garden London WC2E 8HB

    Display of two platforms measuring 13.6m x 3.6m x 2.263m and 14.61m x 3.6m x 2.263m each featuring three internally illuminated sculptures for a temporary period from 16 October 2026 to 6 January 2027.

    Received 17 Aug, published by the council 22 Aug 2026 Advertising
  • 26/06184/ADV Awaiting decision

    Royal Horseguards Hotel 2 Whitehall Court London SW1A 2EL

    Display of two non-illuminated hotel-branded flags measuring 2m X 0.1m mounted on two angled wall-mounted flagpoles on the northern elevation. [Linked to 26/05884/LBC].

    Received 10 Sep, published by the council 17 Sep 2026 Advertising
  • 26/06217/ADV Awaiting decision

    208 Regent Street London W1B 5BD

    Display of non illuminared fascia sign measuring 0.702m X 0.25m, 0.845m X 0.3m, externally illuminated hanging sign 0.65m X 0.65m, 0.1m X 1.8m, non illuminated other sign 0.2m X 0.29m, 0.4m X 0.2m, 0.4m X 0.2m

    Received 10 Sep, published by the council 18 Sep 2026 Advertising