The contract encompasses all aspects of track renewal on the 1047km network including rails, points, crossings, sleepers and trackside drainage, while Balfour Beatty will also introduce new measures and technologies such as remote surveying systems and viewing software to generate efficiencies and reduce disruption.

The contract replaces a previous eight-year agreement with Balfour Beatty, which TfL says contributed to modernising around 75% of the Tube network.

Works are due to commence in April with an option to extend the contract for a further six years. The project will employ up to 300 staff at its peak, including a number of apprenticeship and graduate opportunities.

“This contract is designed to promote a strong working relationship between LU and Balfour Beatty,” says TfL chief procurement officer, Mr David Wylie. “The contract has incentives built in that create a strong focus on safe and reliable delivery allowing TfL to maintain the best possible safety standards and ensuring a reliable service for its customers. The agreement also encourages consistent improvement and innovation while controlling costs.”