Costain Group PLC (LSE:COST) has won a new seven-year contract for the HS2 rail project that it said will be worth a minimum of £400 million and starting in the first quarter of next year.
This contract has the option for additional contract extensions after the seven-year period.
The construction group will be the sole supplier of tunnel and lineside mechanical and electrical (M&E) systems for HS2, designing, suppling, manufacturing, installating, testing and commissioning the systems during construction.
CEO Alex Vaughan said: "Costain has a long-standing involvement with the UK's largest strategic infrastructure programme and this new contract is a testament to the strength of our collaborative and successful relationship with HS2.
"Our teams will draw on their experience and expertise to deliver world-class systems, using the latest technology to drive efficiency."