18 Suffolk Street London SW1Y 4HG

1. 2 Dec 2025

   Received by Westminster

2. 4 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 26 Mar 2026

   Decision issued: Application Permitted

4. 1 Aug 2026

   Added to PlanIndex

Westminster granted permission on 26 March 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.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• Theatre Royal 8 Haymarket London SW1Y 4HT

  26/00875/FULL Submitted 12 Feb 2026 50 yards away

  87% historically approved · decision due ~30 Apr

  Replacement of existing chiller unit with air source heat pump and associated acoustic screens in rear lightwell. (linked with 26/00874/LBC)

  Awaiting decision Full applications 5 docs

• Theatre Royal 8 Haymarket London SW1Y 4HT

  26/00874/LBC Submitted 12 Feb 2026 50 yards away

  90% historically approved · decision due ~30 Apr

  Replacement of existing chiller unit with air source heat pump, associated acoustic screens and internal plant equipment, removal of internal partitions (linked with 26/00875/FULL)

  Awaiting decision Heritage and listed buildings 6 docs

• 1 - 4 Suffolk Street London SW1Y 4HG

  26/00189/ADLBC Submitted 14 Jan 2026 50 yards away

  Detailed drawings of new doors pursuant to condition 3 of listed building consent dated the 6 November 2025 (RN: 25/04083/LBC).

  Granted Conditions 4 docs

• 15 Suffolk Street London SW1Y 4HG

  26/01038/TCA Submitted 18 Feb 2026 50 yards away

  100% historically approved · decision due ~15 Apr

  T1 ? x1 Holm Oak tree in the grounds of 15 Suffolk Street and within a conservation area. Reduce the crown height by 2.5 metres and crown width by 1.5 metres. Reduce the crown density by removing dead, crossing and damaged branches. Raise the crown to achieve a clearance of 2.5 metres above ground level.

  Awaiting decision Trees 6 docs

• 12 - 13 Suffolk Street London SW1Y 4HG

  25/06128/NMA Submitted 28 Aug 2025 50 yards away

  Amendments to planning permission dated 16 April 2025 (RN 24/08637/FULL) for: Installation of plant equipment in an acoustic enclosure in the rear courtyard; erection of glazed link bridge to south elevation at first floor level; and, decorative and repair works to the facades. Namely, increase in size of plant equipment and acoustic enclosure and new planter in rear courtyard.

  Granted Amendments Windows or glazing 8 docs

• 11 - 12 Haymarket London SW1Y 4BP

  26/02056/TELNOT Submitted 8 Dec 2025 50 yards away

  Addition of 1 no 300mm dish.

  Decided Telecoms 2 docs

• 26/04878/LBC Decided

  34 Grosvenor Street London W1K 4QU

  Internal works to facilitate the subdivision of 34 Grosvenor Street and 3 Three Kings Yard

  Received 21 Jul, published by the council 1 Aug 2026 Heritage and listed buildings
• 26/04141/LBC Decided

  80E Randolph Avenue London W9 1BG

  Replacement of sashes in two front windows at 2nd floor level and one rear window with slimline double glazed timber sashes. (Linked with 26/04142/FULL)

  Received 23 Jun, published by the council 21 Jul 2026 Heritage and listed buildings
• 26/06250/LBC 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 26/06249/FULL)

  Received 11 Sep, published by the council 18 Sep 2026 Heritage and listed buildings
• 26/06203/LBC Awaiting decision

  106 Blandford Street London W1U 8AG

  Installation of two roof-mounted anchor posts. (Linked to 26/06202/FULL)

  Received 10 Sep, published by the council 17 Sep 2026 Heritage and listed buildings
• 26/06187/LBC Awaiting decision

  4 Shepherd Market London W1J 7QB

  Installation of wall mounted highway street light on to the facade of 4 Shepherd Market.

  Received 10 Sep, published by the council 17 Sep 2026 Heritage and listed buildings