Chief executive Thomas Woldbye says third runway is ‘critical’ to maintaining title Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Heathrow Airport’s chief executive, Thomas Woldbye, has warned the hub risks losing its status as Europe’s busiest this year due to