Costain Group PLC is a United Kingdom-based company. The Company, through its subsidiaries is engaged in process engineering, civil engineering and building, holiday home and Service Company and Service Company. The Company is also engaged in construction of hospitals, property development, construction and operation of hospitals, operation of care homes, construction and operation of schools, asset management and operation of hospitals. Its subsidiaries include Costain Abu Dhabi Co WLL, Costain Building & Civil Engineering Ltd, Costain Ltd, Costain Engineering & Construction Ltd., Costain International Ltd. and Richard Costain Ltd.