London's Heathrow Airport, one of the world's busiest hubs, will submit its proposal for a third runway to the British government by summer, its chief executive Thomas Woldbye will say in a speech on Wednesday.

Heathrow Airport is set to confirm a multi-billion pound investment plan to expand two of its terminals ahead of submitting proposals for a third runway to the government this summer.On Wednesday, chief executive Thomas Woldbye will unveil funding to increase capacity at terminals two and five,

Heathrow will submit a plan for its third runway in the summer, its chief executive has confirmed after the chancellor indicated support for the project

The line, called the Heathrow Southern Railway (HSR), is a privately financed proposal to link Surrey towns to one of the world's busiest airports. If built, it would operate between Heathrow and London Waterloo via Staines.