Video encyclopedia

Thames Tideway Scheme


Thames Tideway Tunnel - Transforming the ecology of London’s river


Thames Tideway Tunnel


TVRG Meeting - Geology of the Thames Tideway Tunnel


Thames Tideway - Project Progress


Tideway tunnel shaft at Kirtling Street

The Thames Tideway Tunnel is an under-construction 25 km (16 mi) tunnel running mostly under the tidal section of the River Thames through central London, which will provide capture, storage and conveyance of almost all the combined raw sewage and rainwater discharges that currently overflow into the river. Bazalgette Tunnel Limited (BTL) is the licensed 'Infrastructure Provider' set up to finance, build, maintain and operate the Thames Tideway Tunnel. BTL is a consortium of investors that comprises Allianz, Amber Infrastructure, Dalmore Capital and DIF. From the licence award, BTL trades and is known to the public as 'Tideway'. On 3 November 2015, BTL received its operating licence from Ofwat, ensuring the start of the project.
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  • Background 

  • Options assessment 

  • Thames Tideway Tunnel planning and consultation 

  • Funding and delivery 

  • Controversy 

  • Archaeological discoveries