6 - 8 Mill Street London W1S 2AZ

This site has had 3 applications since 2025: 1 approved, 0 refused.

• 26/06892/FULL Awaiting decision

  6 - 8 Mill Street London W1S 2AZ

  Variation of condition 1 of planning permission dated 31 August 2023 (RN:23/03515/FULL) for the: Relocation of air conditioning units from rear first floor roof to second floor rear flat roof, railings to second floor flat roof, installation of tiles to exterior rear ground floor level and installation of uplighters to the front facade. NAMELY, to allow provision of railings to two small back of house flat roofs (Application under section 73 of the Act).

  Submitted 9 Oct 2026 Full applications
• 25/06233/FULL Granted

  6 - 8 Mill Street London W1S 2AZ

  Installation of a metal framed structure, with part glazed and part retractable awning roof to first floor rear roof terrace, including some additional heaters and associated works.

  Decided 17 Mar 2026 Full applications

1. 29 Apr 2026

   Received by Westminster

2. 21 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 24 June 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 91 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 full applications in a median of 119 days. More in our guide to how long planning decisions take.

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.

• 6 - 8 Mill Street London W1S 2AZ

  26/06892/FULL Submitted 9 Oct 2026 50 yards away

  88% historically approved · decision due ~4 Dec

  Variation of condition 1 of planning permission dated 31 August 2023 (RN:23/03515/FULL) for the: Relocation of air conditioning units from rear first floor roof to second floor rear flat roof, railings to second floor flat roof, installation of tiles to exterior rear ground floor level and installation of uplighters to the front facade. NAMELY, to allow provision of railings to two small back of house flat roofs (Application under section 73 of the Act).

  Awaiting decision Full applications

• 6 - 8 Mill Street London W1S 2AZ

  25/06233/FULL Submitted 2 Sep 2025 50 yards away

  Installation of a metal framed structure, with part glazed and part retractable awning roof to first floor rear roof terrace, including some additional heaters and associated works.

  Granted Full applications Windows or glazing 21 docs

• Second Floor 16 Conduit Street London W1S 2XL

  26/01398/ADFULL Submitted 4 Mar 2026 50 yards away

  88% historically approved · decision due ~29 Apr

  Details of waste storage arrangements pursuant to Condition 5 of the planning permission dated 7 June 2016 (RN: 15/06533/FULL)

  Awaiting decision Full applications 4 docs

• Second Floor 16 Conduit Street London W1S 2XL

  26/01480/NMA Submitted 9 Mar 2026 50 yards away

  93% historically approved · decision due ~4 May

  Amendment of planning permission dated 7 June 2016 (RN: 15/06533/FULL) for 'Dual/alternative use of the second floor for either office (Class B1a) or residential (Class C3) use (1 x 2 bedroom unit). Installation of 4 x external grilles at second floor level on the Mill Street elevation and 1 x external grille on Conduit Street elevation'. NAMELY to vary the wording of Condition 6 to allow the implementation of an alternative ventilation strategy.

  Awaiting decision Amendments 5 docs

• 4 Mill Street London W1S 2AX

  25/05998/FULL Submitted 22 Aug 2025 50 yards away

  Erection of a rear roof extension at third floor level with a sedum roof to the rear; replacement of windows at second floor level with double glazing timber windows; replacement of door and window to the existing rear first floor extension with double glazing timber windows including replacement of roofing; and associated works all in connection with the use of the first to third floor as four flats (Class C3)

  Granted Full applications New dwelling Extension +1 29 docs
  Several homes

• Second Floor 16 Conduit Street London W1S 2XL

  26/01173/CLOPUD Submitted 24 Feb 2026 50 yards away

  84% historically approved · decision due ~21 Apr

  To confirm the lawfulness of proposed residential use on the second floor of the property, in line with planning permission (RN 15/06533/FULL)

  Awaiting decision Lawful development 9 docs

• 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