Ray O'Rourke and family
Rank 2017

Laing O’Rourke is the civil engineering firm behind Heathrow’s Terminal 5, London’s 2012 Olympic Park and the construction of Crossrail stations across the capital. Co Mayo-born O’Rourke, 70, launched the business in 1978 with his brother Des. The Dartford, Kent-based company was renamed Laing O’Rourke in 2001 when it acquired the construction division of John Laing. But these are tough times for the business, which lost about €94m from a PFI hospital in Canada, and its profitable Australian division, run by son Cathal, 39, was put up for sale. The main business, owned by the O’Rourke family, recorded a pre-tax loss of €314m in 2015-16 on turnover of more than €1.8bn. There are €325m of assets in O’Rourke Investments Holdings (UK) and other assets and past salaries add €35m. Jersey-based O’Rourke received an honorary knighthood in 2011 for services to the UK construction industry.