Enhancing communities
Improving the environment
Developing people

Project description

The 25 kilometre Thames Tideway Tunnel is a major infrastructure project that will tackle the sewage pollution in the River Thames.

The Morgan Sindall Infrastructure three-way joint venture with BAM Nuttall and Balfour Beatty is delivering the £416 million, 7 kilometre length, 6.5 metre internal diameter west section of the tunnel.

Morgan Sindall Infrastructure's commitment to enriching communities makes Tideway the kind of project we love to work on. It's about legacy.

The Thames Tideway Tunnel is the biggest infrastructure project ever undertaken by the UK water industry. This is a phenomenal piece of engineering, 25 kilometres in length, which will be excavated by six giant Tunnel Boring Machines using rotating disc-shaped cutterheads, creating the tunnel walls with pre-made concrete segments whilst removing the thousands of tonnes of spoil.

Responsible business

Enhancing communities

Enhancing communities

Tideway’s community programmes include Thames21, London Youth Racing and many other charitable organisations near their construction sites. Tideway is working to reconnect Londoners with the river and to enhance the communities within which we are working.

As an overall project, Tideway supports three charity partners through fundraising and volunteering. These are the Single Homeless Project, which supports homeless people across London; Drive Forward Foundation, which supports care leavers aged 16 to 24 who are looking for employment; and South London Cares, a community network of younger professionals and older neighbours helping one another in Southwark and Lambeth.

In 2018/19 Morgan Sindall Infrastructure, as part of our joint venture, was part of a team of 531 volunteers who together spent 10,403 hours helping local people and organisations.

In 2018, our joint venture team undertook 3,000+ volunteering hours as well as 1,600+ STEM volunteering hours.

Improving the environment

Improving the environment

The Thames Tideway Tunnel will collect sewage before entering the river, ensuring it’s properly treated and cleaning up the river for London, its inhabitants and its wildlife.

While the project is underway, Tideway is supporting sustainable river transport, working to reduce our carbon footprint and cleaning up the foreshore. To support this, our joint venture has invested in two specialist tug boats, with low emissions engines and low noise outputs, in order to contribute to a reduction in lorry movements on the roads of South West London.

The tugs are used to haul barges up and down the Thames carrying materials to the work sites and assisting with the removal of spoil from the tunnel excavation.

Developing people

Developing people

The overall Thames Tideway Tunnel scheme will create more than 4,000 direct and indirect jobs at the peak of construction.

Through the West Section project, 50 new apprenticeships have been created and 249 roles for local residents.


“Our vision is to reconnect London with the River Thames and, by practicing what we preach, we want to demonstrate the huge potential of our city’s greatest natural asset.”

Andy Mitchell
Chief Executive Officer, Tideway