. "Richard Costain and Parker Construction" . . . "1135.0" . . "Richard Costain Limited" . . "Costain Nuclear" . . . "Richard Costain (Construction) Ltd" . . . "1865" . . "Richard Costain and Sons Ltd." . "Richard Costain Ltd" . "Costain Construction Company" . . . . . "Costain Group" . "Costain RWE" . "Richard Costain (Projects) Ltd." . . . . . . "Costain" . "Costain Group" . . . "Costain Ltd" . . . . . . . . . . "Costain Estates Ltd" . . "Messrs Richard Costain" . "Richard Costain Ltd." . . "Costain Civil Engineering Ltd." . "Costain UK Ltd" . .