16 Mortimer Street London W1T 3JL

1. 17 Sep 2025

   Received by Westminster

2. 5 Nov 2025

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 5 November 2025, 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.

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.

• 26 Nassau Street London W1W 7AQ

  07/02379/AD7 Submitted 14 Mar 2007 50 yards away

  Display of estate agent board on a baton affixed to front railings.

  Refused Advertising 4 docs

• 23 Nassau Street London W1W 7AG

  25/05359/LBC Submitted 31 Jul 2025 50 yards away

  Removal and replacement of internal doors.

  Granted Heritage and listed buildings 17 docs

• 20 - 22 Mortimer Street London W1T 3JW

  26/02992/ADFULL Submitted 7 May 2026 50 yards away

  89% historically approved · decision due ~2 Jul

  Details of post commissioning noise assessment report pursuant to Condition 9 of planning permission dated 21 August 2024 (RN 24/04062/FULL)

  Decided 5 docs

• 20 - 22 Mortimer Street London W1T 3JW

  25/06818/ADFULL Submitted 23 Sep 2025 50 yards away

  Detailed drawings (1:5 and 1:20) of the proposed plant enclosure pursuant to Condition 8 of planning permission dated 21 August 2024 (RN24/04062/FULL)

  Granted Full applications 13 docs

• 20 - 22 Mortimer Street London W1T 3JW

  25/09120/ADFULL Submitted 17 Dec 2025 50 yards away

  Detailed drawings of new shopfront, windows and doors showing openability pursuant to condition 4 of planning permission dated 3rd September 2024 (RN:24/04249/FULL)

  Granted Full applications Windows or glazing 4 docs

• 6 Bourlet Close London W1W 7BN

  26/05789/FULL Submitted 24 Aug 2026 50 yards away

  88% historically approved · decision due ~9 Nov

  Replacement of existing lanterns with walk on glass roof lights, new decking to existing roof terrace, changes to the existing mansard to allow the formation of new bifolding doors, changes to rear fenestration and consolitaion and associated works.

  Decided Full applications Loft or dormer Windows or glazing

• 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