Thames Tideway

We’re a shareholder in Thames Tideway, investing approximately £125 million in the company responsible for constructing a new super sewer beneath London. We also provide debt financing to Thames Tideway.  

The city is reliant on a Victorian sewerage system designed for a much smaller population, and due to years of underinvestment, raw, untreated sewage is regularly dumped into the River Thames. 

Thames Tideway was formed as a new company to build a £4.5bn, 25km super sewer to intercept these sewage overflows, and pump them away for treatment. In February 2025, the tunnel was fully connected and operational.