15 Suffolk Street London SW1Y 4HG

1. 18 Feb 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 15 April 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 tree works applications in a median of 39 days. More in our guide to how long planning decisions take.

Applications for works to trees cover protected trees: consent under a tree preservation order, or six weeks notice for trees in a conservation area. More in our guide to planning application types.

• 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

• 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

• 18 Suffolk Street London SW1Y 4HG

  25/08759/LBC Submitted 2 Dec 2025 50 yards away

  Installation of new fibre telecommunications cabling and fibre termination boxes at basement level.

  Granted Heritage and listed buildings 12 docs

• 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

• Basement And Ground Floor 21 Whitcomb Street London WC2H 7HA

  25/06750/ADV Submitted 19 Sep 2025 50 yards away

  Display of non illuminated hanging sign measuring 0.65m x 0.65m

  Granted Advertising 12 docs

• 26/06333/TCA Awaiting decision

  Basement 17 Claverton Street London SW1V 3AY

  Removal of an overgrown and poor specimen Leyland cypress tree in a confined space in the rear garden of 17 Claverton Street, Sw1v 3AY. We wish to remove this tree and replace it with a semi mature Amelanchier Lamarckii which is more appropriate for the space.

  Received 16 Sep, published by the council 17 Sep 2026 Trees
• 26/06346/TPO Awaiting decision

  Crown Court 123 Park Road London NW8 7JH

  Front T1 Lime x 1 (Tilia spp) This 12m triple stem mature lime tree has previously been reduced, its cyclical prune is now due. The lateral growth is touching the windows and hangs low over the road. Suggested work: - crown reduction - reduce height 2m back to previous reduction points - reduce the lateral growth 2-2.5m back to previous reduction points, leaving furnishing growth - retain 50% of internal fine branch structure Front T2 Lime x 1 (Tilia spp) This 12m triple stem mature lime tree has previously been reduced, its cyclical prune is now due. The lateral growth is touching the windows and hangs low over the road. Suggested work: - crown reduction - reduce height 2m back to previous reduction points - reduce the lateral growth 2-2.5m back to previous reduction points, leaving furnishing growth - retain 50% of internal fine branch structure Front T3 London Plane x 1 (Platanus x hispanica) This 16m mature London plane has previously been pollarded, its cyclical prune is now due. Regrowth is touching the building and encroaching upon the balconies. Suggested work:- reduce all round 2-3m back to previous

  Received 16 Sep, published by the council 17 Sep 2026 Trees
• 26/06307/TCA Awaiting decision

  140 Loudoun Road London NW8 0ND

  T1 Acer reduce by cira 1.5m to suitable pruning points T2 Mature apple tree - Crown lift to 2.5 metres from the ground and cut back from the public infrastructure. T3 Magnolia grandiflora - reduce by 1.5m and cut back from building creating a clearance of 2m T4 - Apple Tree - Remove deadwood and reduce crown by 1m Reason for work: General tree maintenance

  Received 15 Sep, published by the council 17 Sep 2026 Trees
• 26/06302/TCA Awaiting decision

  Old Admiralty Building Spring Gardens London SW1A 2AH

  fell to 50mm from ground level Cherry trees in pots in courtyard (G1 - trees have extensive damage to main stems and crown)

  Received 15 Sep, published by the council 17 Sep 2026 Trees
• 26/06282/TCA Awaiting decision

  13 Randolph Crescent London W9 1DP

  T4 - Reduce magnolia crown by 0.5?1m and thin by 10-15% all around, and remove any deadwood whilst retaining furnishing growth. This is to allow more light through the canopy and maintain the crown at a manageable size.

  Received 14 Sep, published by the council 17 Sep 2026 Trees