In London, a third of the water mains are over 150 years old and half are over 100 years old. Some of these mains have significantly deteriorated over time, contributing to high leakage levels.

Browne will undertake critical renewal work aimed at reducing leakage, enhancing  water quality, and improving the resilience of the supply network.

The contract will see Browne renewing pipework within high priority District Metered Areas (DMAs) in the Boroughs of  Greenwich, Brent, Enfield, Lambeth and Guildford.

Barry Jones, Operations Director, responsible for the delivery of the mains renewal  programme, said: “This contract win represents an exceptional opportunity for Browne to deliver critical  infrastructure improvements across London and the South-East through Thames  Water’s AMP8 programme.

“Building on our exceptional track record, including replacing  over 70km of Victorian mains for Thames Water in AMP7 across more than 100  schemes, we have consistently reduced client takeover timescales from 30 days to an  average of just 8 days from project completion.”