Cast your votes: The Tunnel Under the River Thames is up for the People’s Choice Award to choose London’s top engineering project

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Your vote could determine whether Cadent’s flagship Tunnel Under the River Thames project is crowned London’s favourite engineering project.

The public is being invited to cast their vote for one of ten major infrastructure projects in the capital, including Cadent’s flagship Tunnel Under the River Thames project, for the People’s Choice Award.
The ballot for the award is now open to the public and votes must be cast by Monday 14 May, for more information and to vote, go to

The winning project will receive the ICE London People's Choice Award trophy at the ICE London Civil Engineering Awards which will be held at One Great George Street on Thursday 24 May.
Cadent could emerge as a triple winner at the awards as it has also been nominated in the Best Infrastructure and Greatest Contribution to London Categories.

The £18m tunnel project is a key element of Cadent’s £1billion programme of essential gas mains replacement work in the capital. Work on the 330m tunnel was completed in December 2017 and installation of the pipeline which will transport gas under the River Thames is well underway.
The project has involved extraordinary efforts on the part of Cadent and its strategic partner tRIIO, which also includes contractors Skanska, Barhale and designers Mott Macdonald. 

The project team negotiated with 15 different organisations to secure the 20 different permissions required for work to proceed. There has also been the challenge of working around major projects such as Thames Tideway.

The project’s two 30m deep tunnel shafts were located in Battersea Park and the grounds of the Royal Hospital Chelsea along with project offices and other facilities. For the two years it has been on site the project team has also had  to leave site and remove all trace of their work in time for the summer season, so events such as the Chelsea Flower Show and arts fair Masterpiece were not affected by the project.

This was successfully done as required for both the 2017 and 2018 summer seasons, with the tunnel shaft being covered by a massive concrete slab which was then landscaped.
Cadent Project Manager Andrew Hejdner said: “The project team is honoured to be one of the ten major projects nominated for the People’s award and of course we’d be delighted if people voted for us!
“We’ve got a terrific team on the project and it’s a pleasure to work with them and to interact with all manner of people who help make London what it is while we carry out our work.”
He added: “Once complete and operational our project will help ensure Londoners and visitors to our capital city keep on having access to safe and reliable gas supplies to keep warm, cook their food or just make a cuppa.”
The 2018 Awards Ceremony will take place at a black tie dinner held at ICE Headquarters, One Great George Street, London on Thursday 24 May 2018.
To watch a video about the project visit:


Cadent is the UK’s largest gas distribution network with a 200-year legacy.  We are in a unique position to build on strong foundations whilst encouraging the curiosity to think differently and the courage to embrace change.  Day to day we continue to operate, maintain and innovate the UK’s largest gas network, transporting gas safely and protecting people in an emergency.   Our skilled engineers and specialists remain committed to the communities we serve, working day and night to ensure gas reaches 11 million homes from Cumbria to North London and the Welsh Borders to East Anglia, to keep your energy flowing. 

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