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, reconfigure the airfield and improve bus connections.

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.

Chief executive Thomas Woldbye will announce funding for upgrades and expansion in a speech on Wednesday. | ITV National News

The Government has thrown its weight behind expansion at Heathrow but critics to the possible £63billion project range from airlines and environmentalists to high profile figures within Labour

In a statement on Monday, the UK’s largest airport said it was in the process of finalising proposals with stakeholders that would bring the long-delayed, highly controversial project back to life

Heathrow Airport will submit proposals for a third runway 'by the summer' after welcoming Chancellor Rachel Reeves' 'recent show of support' for the project. Reeves last month backed a third runway at London's Heathrow Airport as part of a plan to revitalise economic growth.