Lakeside Mental Health Unit, West Middlesex Hospital, Twickenham Road, Isleworth, TW7 6AF

1. 14 Jan 2026

   Received by Hounslow

2. 26 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 23 Apr 2026

   Decision issued: APPROVED

4. 12 Aug 2026

   Added to PlanIndex

Hounslow granted permission on 23 April 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.

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.

• West Middlesex Hospital, Lakeside Mental Health Unit,Twickenham Road,Isleworth,TW7 6AF

  PA/2024/3048 Submitted 11 Sep 2024 0m away

  Prior Approval for the installation of 153.51kWp solar panels on the roof.

  Granted Outline 6 docs

• West Middlesex Hospital, Lakeside Mental Health Unit, Twickenham Road, Isleworth, TW7 6AF

  P/2025/2867 Submitted 23 Sep 2025 0m away

  Erection of a bin store in the existing car park and creation of a loading bay.

  Granted Full applications 13 docs

• West Middlesex University Hospital Twickenham Road, Isleworth, TW7 6AF

  P/2026/1057 Submitted 31 Mar 2026 128m away

  Details of Condition 17A (BREEAM Interim) submitted pursuant to planning permission 01137/E/P82 (P/2022/242) dated 14/11/2023 for Demolition of existing buildings and structures and the erection of a five storey Ambulatory Diagnostic Centre including plant enclosure, associated vehicular and cycle parking, landscaping, and associated infrastructure

  Withdrawn Conditions Demolition 3 docs

• West Middlesex University Hospital Twickenham Road, Isleworth, TW7 6AF

  P/2026/1051 Submitted 30 Mar 2026 128m away

  Details of Condition 30 (Oil interceptors) submitted pursuant to planning permission 01137/E/P82 (P/2022/2424) dated 14/11/2023 for Demolition of existing buildings and structures and the erection of a five storey Ambulatory Diagnostic Centre including plant enclosure, associated vehicular and cycle parking, landscaping, and associated infrastructure

  Granted Conditions Demolition 8 docs

• WEST MIDDLESEX UNIVERSITY HOSPITAL LAND TO THE EAST OF THE MARJORY WARREN BUILDING TWICKENHAM ROAD, ISLEWORTH, TW7 6AF

  P/2024/1034 Submitted 28 Mar 2024 128m away

  Application to discharge Schedule 1, Part 2.2 Construction Training Contribution of planning application P/2022/2424 (01137/E/P82) dated 14/11/2023 in line with the requirements of the S106 Legal Agreement for the demolition of existing buildings and structures and the erection of a five storey Ambulatory Diagnostic Centre including plant enclosure, associated vehicular and cycle parking, landscaping, and associated infrastructure

  Granted Conditions Demolition 3 docs

• WEST MIDDLESEX UNIVERSITY HOSPITAL LAKESIDE MENTAL HEALTH TWICKENHAM ROAD, ISLEWORTH, TW7 6AF

  P/2021/2572 Submitted 24 Jun 2021 128m away

  Removal of the existing close boarded boundary fence and erection of a new 4m high secure fence around the perimeter of the existing garden of Robin Ward in Lakeside Mental Health Unit.

  Granted Full applications 13 docs
  Small domestic

• P/2026/1189 Granted

  12 The Grove, Isleworth, TW7 4JZ

  Installation of one front boundary gate and new windows to allow the conversion of existing single family house to five self contained flats with associated refuse and cycle storage.

  17 Apr 2026 Full applications
• P/2026/1937 Granted

  Flat Ground Floor, 102 New Heston Road, Hounslow, TW5 0LF

  Erection of a single storey detached outbuilding for use as a home office in the rear garden of the flat

  30 Jun 2026 Full applications
• P/2026/1494 Granted

  2 Bath Road, Chiswick, London, W4 1LW

  Demolition of the single-storey rear extension, installation of temporary scaffolding to the façade of the building, installation of associated plant equipment, an external condenser unit and acoustic shelter. Internal layout alterations and installation of secondary glazing, external alterations including re-rendering to allow continued use under Class E (c) and (g)(i)

  6 May 2026 Full applications
• P/2026/1936 Refused

  Flat First Floor, 102 New Heston Road, Hounslow, TW5 0LF

  Erection of a rear roof and outrigger extension with two front rooflights to the flat

  30 Jun 2026 Full applications
• P/2026/0592 Granted

  87 Cranleigh Road, Feltham, TW13 4QA

  Erection of a two storey residential house with associated landscaping, private amenity space, cycle and refuse storage.

  19 Feb 2026 Full applications