Costain Group plc is a British construction and engineering company headquartered in Maidenhead, England.

Founded in 1865, Costain has over 70 years experience in hydrogen, CCUS, gas separation and processing. It is helping to realise the transition to hydrogen through its work on hydrogen production and transportation concepts, and carbon capture and storage schemes. From large-scale industrial clusters to community-based schemes, we identify opportunities for decarbonisation and develop projects from initial concept until completion.