20 Manchester Square London W1U 3PZ

This site has had 4 applications since 2022: 4 approved, 0 refused.

• 25/08754/NMA Granted

  20 Manchester Square London W1U 3PZ

  Amendments to planning permission dated 04 September 2020 (RN: 20/03854/FULL) for, 'Demolition and replacement of existing fourth floor, demolition of existing plant room, and erection of a single storey roof extension at fifth floor and rear extension at second to fifth floor levels in connection with existing office (Class B1) use, provision of new main office entrance, flexible use of part ground and basement floor for either retail or office use (Class A1/B1), creation of roof terrace at fifth floor level, provision of cycle parking spaces and facilities, roof plant and associated external alterations, including replacement windows'; NAMELY, to reconfigure the basement level shower and cycle parking facilities.

  Decided 13 Jan 2026 Amendments
• 23/01041/ADFULL Granted

  20 Manchester Square London W1U 3PZ

  Detailed design of roof level flues pursuant to Condition 8 of planning permission dated 4 September 2020 (RN:20/03854/FULL)

  Decided 24 Feb 2023 Full applications
• 22/04020/ADFULL Granted

  20 Manchester Square London W1U 3PZ

  Details of pruning works required to the Council's own trees pursuant to condition 23 of planning permission dated 4th September 2020 (RN: 20/03854/FULL)

  Decided 16 Sep 2022 Full applications

1. 16 Aug 2023

   Received by Westminster

2. 31 Aug 2023

   Decision issued: Application Permitted

3. 14 Sep 2026

   Added to PlanIndex

Westminster granted permission on 31 August 2023, 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.

• 20 Manchester Square London W1U 3PZ

  25/08754/NMA Submitted 2 Dec 2025 50 yards away

  Amendments to planning permission dated 04 September 2020 (RN: 20/03854/FULL) for, 'Demolition and replacement of existing fourth floor, demolition of existing plant room, and erection of a single storey roof extension at fifth floor and rear extension at second to fifth floor levels in connection with existing office (Class B1) use, provision of new main office entrance, flexible use of part ground and basement floor for either retail or office use (Class A1/B1), creation of roof terrace at fifth floor level, provision of cycle parking spaces and facilities, roof plant and associated external alterations, including replacement windows'; NAMELY, to reconfigure the basement level shower and cycle parking facilities.

  Granted Amendments Extension Demolition +1 3 docs
  Small domestic

• 26 Manchester Square London W1U 3PZ

  08/04138/AD7 Submitted 8 May 2008 50 yards away

  Display for a temporary period of six months of a non-illuminated 'to let' board attached to the railings in front of the building at street level and measuring 0.6m x 0.45m.

  Granted Advertising 3 docs

• 26 Manchester Square London W1U 3PZ

  07/01843/LBC Submitted 26 Feb 2007 50 yards away

  Removal of internal partitions and addition of new lightweight partitions and doors. (Site includes No. 1 Manchester Square)

  Granted Heritage and listed buildings 11 docs

• 20 Manchester Square London W1U 3PZ

  23/01041/ADFULL Submitted 17 Feb 2023 50 yards away

  Detailed design of roof level flues pursuant to Condition 8 of planning permission dated 4 September 2020 (RN:20/03854/FULL)

  Granted Full applications 14 docs

• 20 Manchester Square London W1U 3PZ

  22/04020/ADFULL Submitted 20 Jun 2022 50 yards away

  Details of pruning works required to the Council's own trees pursuant to condition 23 of planning permission dated 4th September 2020 (RN: 20/03854/FULL)

  Granted Full applications Trees 12 docs

• 1 Manchester Square London W1U 3PZ

  21/02392/AD7 Submitted 12 Apr 2021 50 yards away

  Display for a temporary period of six months of a non-illuminated sign attached to the railings in front of the building at street level and measuring 0.6m x 0.45m.

  Granted Advertising 6 docs

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06297/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06234/FULL Awaiting decision

  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
• 26/06249/FULL 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 26/06250/LBC)

  Received 11 Sep, published by the council 18 Sep 2026 Full applications
• 26/03576/FULL Decided

  15A Devonshire Terrace London W2 3DW

  Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

  Received 1 Jun, published by the council 11 Sep 2026 Full applications