Costain Group PLC, established in 1865 and headquartered in Maidenhead, UK, specializes in providing intelligent infrastructure solutions. Serving the United Kingdom's energy, water, transportation, and defense markets, the company operates through two core segments. The Transportation division focuses on road, rail, and integrated transport projects, while the Natural Resources division addresses needs in the water, energy, and defense sectors. Costain's extensive service offerings include forward-thinking strategic consultancy, expert advisory, advanced digital technology, asset optimization, and the meticulous delivery of complex programs.