Tideway is the company delivering the Thames Tideway Tunnel. It is owned by a consortium of investors (Allianz, Amber Infrastructure, Dalmore Capital and DIF), and more than two million pensioners have an indirect investment in Tideway through UK pension funds managed by those investors. Preparatory work on the project began in 2015 and work is now underway at each of our 24 sites in London. Work is anticipated to be completed in 2024. The tunnel will cost £4.2bn and is being paid for by Thames Water’s 15 million wastewater customers through their bills, which will rise by no more than £25 per year.