Costain Group PLC is a UK‐based engineering and technology solutions provider specializing in the design, delivery and management of critical infrastructure projects. The company partners with public and private sector clients across transportation, water, energy, utilities and defence to develop integrated, whole‐life solutions that address asset performance, safety and environmental impact.
Costain’s service offerings encompass feasibility studies and concept design, detailed engineering, project and construction management, and long‐term asset management. The firm places particular emphasis on digital innovation—deploying data analytics, Internet-of-Things monitoring and predictive maintenance tools to optimise asset reliability and drive operational efficiency.
Headquartered in Maidenhead, England, Costain primarily serves clients throughout the UK, including national and local government bodies, infrastructure operators and major utilities. The company has delivered flagship programmes in road and rail network enhancements, flood defences and the rollout of advanced energy networks, leveraging its multi‐disciplinary engineering expertise.
With origins dating back to 1865, Costain has evolved from a regional construction contractor into a long-established specialist in intelligent infrastructure. As of 2023, the Group Chief Executive is Alex Vaughan, who leads a senior team focused on delivering sustainable, low-carbon solutions and strengthening the company’s position in the UK’s critical infrastructure market.
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