Headquartered in Madrid , this Spanish-based construction outfit saw a sizeable bump in revenue from 2015 to 2016 . That upwardly

trending revenue rose from $ 11.31bn to $ 12.55bn under the direction of CEO Iñigo Meirás Amusco . Employing upwards of 75,000 people , the company serves Spain , Portugal , Ireland , Switzerland , Greece , Canada , Chile , U . K . and the United States . Although the company ’ s name literally means “ railroad ,” its diversified operations include infrastructure projects , airport management , as well as residential and commercial building . Subsidiaries include Amey plc , and percentages of AGS Airports , and Heathrow Airport Holdings . Its most notable work is the Guggenheim Museum .

Based in London , Balfour Beatty enjoyed a 2016 revenue stream of $ 12.36bn . The more than 100-year-old outfit works primarily in infrastructure , providing constructions services as well as support and investments . Its infrastructure work includes refurbishing existing structures , rail renewal and public roads . The company also enjoys a 50 % stake in the Hong Kong-based Gammon Construction company . Balfour is overseen by CEO Leo Quinn and the 2016 revenue performed lower than the 2015 numbers . Its notable works date back to the Churchill Barriers in Orkney completed during the 1940s and the London Aquatics Centre in 2011 . Key projects such as the Crossrail Liverpool Street Station , Aberdeen Western Peripheral Route are expected to reach completion during 2018 . The outfit employs more than 30,000 people .

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