Severfield Rowen remained the top UK steel contractor, with turnover of £266.7m for the 2010 financial year.
The firm has been buoyed this year by its win of the steelworks for the Cheesegrater contract, appointed by main contractor Laing O’Rourke.
William Hare remained the second largest firm based on revenue, far behind Severfield, with £154.1m based on 2009 figures. Bourne Group increased profits to £1.8m, while turnover declined marginally to £37.8m.
The most significant mover was Walter Watson, which climbed from ninth to seventh, and was the only firm to increase its turnover based on 2010 financial figures. While structural steel clients included Dublin’s Pointe Theatre, the Northern Ireland firm also operates in agriculture and manufacturing sectors.