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

  88% 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

• 26/07509/LBC 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 26/07508/FULL)

  Received 4 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07471/LBC Awaiting decision

  12 Queen Anne's Gate London SW1H 9AA

  Excavation of single-storey basement, internal reconfiguration and installation of modern services. (Linked with 26/07470/FULL)

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07461/LBC Awaiting decision

  1 Savile Row London W1S 3JR

  Minor internal works comprising redecoration and upgrades to lighting, flooring and bathroom and kitchen facilities, together with external works including new lighting and signage.

  Received 3 Nov, published by the council 5 Nov 2026 Heritage and listed buildings
• 26/07482/LBC Awaiting decision

  160 Regent Street London W1B 5SP

  Temporary installation of Christmas decorations to the façade of the Guess store, Regent Street, comprising garlands, external LED lighting and decorative elements fixed to temporary metal support structures and steel cables without drilling into the existing façade, from 4 November 2026 to 7 January 2027.

  Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings
• 26/07489/LBC Awaiting decision

  RB Building 557 Harrow Road London W10 4RH

  Erection of a temporary stretch canopy for six months a year, for a period of five years at Jaego's House. (Linked with 26/07488/FULL)

  Received 3 Nov, published by the council 6 Nov 2026 Heritage and listed buildings