128 Mount Street London W1K 3NU

1. 2 Jul 2025

   Received by Westminster

2. 28 Oct 2025

   Decision issued: Application Permitted

3. 29 Jul 2026

   Added to PlanIndex

Westminster granted permission on 28 October 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.

• Third Floor And Fourth Floor Rear 128 Mount Street London W1K 3NU

  25/05411/LBC Submitted 1 Aug 2025 50 yards away

  Replacement of existing access hatch, ladder and internal loft with an Automatic Opening Vent with retractable ladder and integrated handrail (Linked 25/05410/FULL)

  Granted Heritage and listed buildings 20 docs

• Third Floor And Fourth Floor Rear 128 Mount Street London W1K 3NU

  25/05410/FULL Submitted 1 Aug 2025 50 yards away

  Replacement of existing access hatch, ladder and internal loft with an Automatic Opening Vent with retractable ladder and integrated handrail (Linked 25/05411/LBC)

  Granted Full applications 21 docs

• 125 Mount Street London W1K 3NS

  10/08112/FULL Submitted 22 Sep 2010 50 yards away

  Installation of plant equipment at rear basement level and alterations to shopfront.

  Granted Full applications Windows or glazing 12 docs

• 125 Mount Street London W1K 3NS

  10/08113/LBC Submitted 22 Sep 2010 50 yards away

  Installation of plant equipment at rear basement level and alterations to shopfront.

  Granted Heritage and listed buildings Windows or glazing 3 docs

• 125 Mount Street London W1K 3NS

  10/07577/LBC Submitted 2 Sep 2010 50 yards away

  Installation of two fascia signs behind the shopfront.

  Granted Heritage and listed buildings Windows or glazing 9 docs

• 125 Mount Street London W1K 3NS

  10/07553/LBC Submitted 2 Sep 2010 50 yards away

  Internal alterations at basement and ground floor level.

  Granted Heritage and listed buildings 14 docs

• 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
• 26/07460/FULL Awaiting decision

  1 Hanover Square London W1S 1HA

  Installation of new public art sculptures and seating; hard and soft landscaping; installation of an area of raised terrace decking on St George Street measuring 43m x 2.6m for the placing of tables, chairs and banquette benches in connection with restaurant use; and associated external alterations and enabling works.

  Received 3 Nov, published by the council 5 Nov 2026 Full applications
• 26/07451/FULL Awaiting decision

  Flat 1 31 South Audley Street London W1K 2PG

  Replacement of windows, Installation of an external condenser to the rear elevation including Internal refurbishment. (linked with 26/07452/LBC)

  Received 2 Nov, published by the council 4 Nov 2026 Full applications
• 26/07443/FULL Awaiting decision

  150 Great Portland Street London W1W 6QD

  Installation of three air conditioning condenser units to the lower ground floor rear courtyard, incluidng erection of a plunge pool. (retrospective)

  Received 2 Nov, published by the council 4 Nov 2026 Full applications
• 26/06234/FULL Decided

  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