Costain Group PLC is engaged in engineering consultancy, construction and operations and maintenance. The Company operates in four business segments: Environment, Infrastructure, Energy & Process and Land Development operations in Spain. It provides front-end engineering consultancy, construction and ongoing care and maintenance services across market sectors, including water, waste, power, rail, hydrocarbons and chemicals, highways and nuclear process. The Environment division focuses on the water and waste markets. The Infrastructure division includes its operations in the highways, rail, and airports sectors. The Energy & Process division includes the hydrocarbons and chemicals, nuclear process and power sectors. The Company has Land Development activity in Spain.