15 Golden Square London W1F 9JG

1. 7 Sep 2026

   Received by Westminster

2. 14 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 2 November 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 65 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.

• 12 Golden Square London W1F 9JE

  26/05960/FULL Submitted 1 Sep 2026 50 yards away

  87% historically approved · decision due ~2 Nov

  Replacement of a louvre to a window at fifth floor level.

  Awaiting decision Full applications Windows or glazing

• 12 Golden Square London W1F 9JE

  26/01631/FULL Submitted 12 Mar 2026 50 yards away

  87% historically approved · decision due ~7 May

  Installation of external air conditioning units and screen to the roof.

  Awaiting decision Full applications 26 docs

• 3 - 3A Lower James Street London W1F 9EQ

  05/01147/AD7 Submitted 14 Feb 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 outside No. 3A, at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.

  Granted Advertising 2 docs

• 3 Lower James Street London W1F 9EQ

  10/06033/ADV Submitted 15 Jul 2010 50 yards away

  Display of externally illuminated fascia sign measuring 2.75m x 0.58mn (split decision).

  Granted Advertising 1 doc

• 3 Lower James Street London W1F 9EQ

  10/05974/FULL Submitted 13 Jul 2010 50 yards away

  Installation of two air conditioning units on raised platform at rear first floor level within acoustic enclosure.

  Granted Full applications 7 docs

• 3 - 3A Lower James Street London W1F 9EQ

  04/05969/AD7 Submitted 29 Jul 2004 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 outside No.3A, at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.

  Granted Advertising 2 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  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 repolacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06234/FULL Awaiting decision

  40 Grosvenor Place London SW1X 7HJ

  Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

  Received 11 Sep, published by the council 18 Sep 2026 Full applications
• 26/06249/FULL Awaiting decision

  53 Wimpole Street London W1G 8YH

  Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)

  Received 11 Sep, published by the council 18 Sep 2026 Full applications
• 26/03576/FULL Decided

  15A Devonshire Terrace London W2 3DW

  Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

  Received 1 Jun, published by the council 11 Sep 2026 Full applications