The company will also design, supply, install, test and commission the tunnel ventilation systems. Costain chief executive Alex Vaughan said: "Costain has a long-standing involvement with the UK's largest strategic infrastructure programme and this new award is testament to the strength of our collaborative and successful relationship with HS2. "Our teams will draw on their experience and expertise in delivering world-class M&E systems, for example on Crossrail, and will use the latest technology to drive efficiency." He added: "HS2 will be transformational for UK connectivity, freeing up capacity on the existing rail network and alleviating road traffic and congestion. It's a project that will continue to create jobs, develop skills and drive prosperity long after construction." The company has recently been trialling AI robotics technology that it said can automate and improve the efficiency and safety of tunnel M&E installation.