Established in the 1960s, Belfast brothers Kevin (65) and Michael (60) Lagan built one of Northern Ireland's biggest construction empires, specialising in building airports around the world.
The company also branched out into quarrying, cement, housebuilding and roads. Like others in the industry, it took a hammering in the crash and assets were divided up in 2010. At one stage the business was valued at close to 450m. The construction arm had sales up 264m last year and a profit of 9m.