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HS2 in Hillingdon

HS2 in Hillingdon
Proposed Colne Valley Viaduct crossing Harefield lake

Find out what HS2 means for Hillingdon

In Hillingdon, the HS2 route will surface from the new Northolt Tunnel (that connects Old Oak Common to West Ruislip), at the West Ruislip Portal, which sits alongside the existing Chiltern railway line.

The route will then cross over a new bridge close to the existing Chiltern Line railway bridge, and towards the Colne Valley Viaduct.

Two tunnelling machines will be launched from the West Ruislip Portal and will travel five miles east underground to create the western section of the Northolt Tunnel.

HS2 Works in your area

Our In your area map brings all our of work notifications together on one page, making it easier for you to navigate and ensure you are kept up-to-date on the work we are doing in your area.

Search the Colne Valley Viaduct area.

Search the Harvil Road & Copthall area.

Search the Breakspear Road area.

Search the West Ruislip area.

Search the South Ruislip area.

What we're delivering in Hillingdon

Tunnelling works in Hillingdon

Find information about the programme of tunnelling works that we are carrying out in the Hillingdon area.

Information about Ground Settlement

Find information about ground settlement for properties close to HS2 tunnels or excavation works.

Utility works in the Hillingdon area

Find information about the programme of utility works that we are carrying out in the Hillingdon area.

Copthall tunnel & sustainable placement areas

The design for the Copthall Tunnel and the Northern Sustainable Placement Area (NSPA) has been developed.

Works affecting public rights of way and local roads

Find out how our works may temporarily or permanently affect footpaths and Public Rights of Way in Hillingdon.

Colne Valley viaduct

The design for theColne Valley viaduct has been developed.

Tunnel boring machine (TBM) power supply route

A high capacity 33 kilovolt (kV) 20 mega volt amp (MVA) cable power supply is needed at West Ruislip for the tunnel boring machines.

Colne Valley Western Slopes

The HS2 construction site will be transformed into one of the largest areas of new chalk grassland in the Chilterns.

Harvil Road Injunction

The court injunction is necessary to help us keep the public and our staff safe at our work sites.

  • Construction

    HS2 has appointed joint venture Skanska, Costain and STRABAG (SCS Railways) to deliver civil engineering works across a 26.4km section of the Phase One route, which will run through Hillingdon.

  • Supply Chain

    More than 10 businesses in Hillingdon are working on HS2 already. Almost two-thirds of these businesses are SMEs.

  • Community Fund

    In and around Hillingdon, three CEF projects worth almost £358,000 have already been awarded.

Three month construction look ahead

September 2021

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