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Planning application

COLNE VALLEY VIADUCT, WETLANDS ECOLOGICAL MITIGATION SITE HARVIL ROAD HAREFIELD

Granted Hillingdon 73263/APP/2026/43 Full

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Request for approval of Plans and Specifications for reconfiguration of previously approved works within the Colne Valley Viaduct Groundworks South Area 1, on land predominantly alongside Dews Lane and contained between Harvill Road to the east, the Chiltern Railway line to the south and Harefield No.2 Lake to the west, in accordance with Paragraphs 2 and 3 of Schedule 17 to the High Speed Rail (London - West Midlands) Act 2017.

As published by the council, reference 73263/APP/2026/43

Application record

Reference
73263/APP/2026/43
Type
Full
Status
Approval
Decision
Permitted
Received
7 Jan 2026
Validated
7 Jan 2026
Decided
11 Mar 2026
Ward
ICK/HAM & S HF/D 22

Site history

Applications at this address on the Hillingdon register

This site has had 3 applications since 2026: 3 approved, 0 refused.

  • 73263/APP/2026/251 Granted

    COLNE VALLEY VIADUCT, WETLANDS ECOLOGICAL MITIGATION SITE HARVIL ROAD HAREFIELD

    Request for approval of Plans and Specifications for works within the Colne Valley Viaduct Groundworks South Area 1, on land south of Moorhall Road, on the east side of Savay Lake, in accordance with Paragraph 3 of Schedule 17 to the High Speed Rail (London - West Midlands) Act 2017.

    Decided 9 Apr 2026 Full applications
  • 73263/APP/2026/250 Granted

    COLNE VALLEY VIADUCT, WETLANDS ECOLOGICAL MITIGATION SITE HARVIL ROAD HAREFIELD

    Request for agreement of a Site Restoration Scheme on land parcels to the south of Moorhall Road, in proximity to the Colne Valley Viaduct and its associated construction works, in accordance with Paragraph 5(1) of Part 1, Schedule 16 to the High Speed Rail (London - West Midlands) Act 2017.

    Decided 26 Mar 2026 Full applications

Timeline

Dates from the published record

  1. 7 Jan 2026

    Received by Hillingdon

  2. 11 Mar 2026

    Decision issued: Permitted

  3. 12 Aug 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

17 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

What this grant of permission means

Hillingdon granted permission on 11 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.

About full applications

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.

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