Heathrow third runway location – map reveals new area airport will cover - Part of the M25 could be rerouted through a new tunnel to make space for the runway

A map reveals where Heathrow will expand after the government gave a green light to the airport’s growth. The UK’s busiest airport is expected to get a third runway after confirmation by Chancellor Rachel Reeves today.

The cost of building a third runway at Heathrow Airport is estimated to be at least £14 billion and would be paid for by the airport owners, the BBC reported. However, the total cost could be much higher due to the cost of the associated road and rail infrastructure.

Plans to expand London's other airports are already further along than Heathrow's and have in the past been viewed as an alternative to a third Heathrow runway. Work is set to start this year to expand capacity at Stansted's terminal. The government is due to make a decision on Gatwick airport by 27 February.

Rachel Reeves confirmed plans for a third runway at London Heathrow Airport this morning, (Wednesday, January 29). The ambitious project has been backed by the airport itself, claiming it is the 'bold, responsible vision the UK needs to thrive in the 21st century'.

Reeves told the BBC she wanted to see "spades in the ground" in the current Parliament and planes to start using the runway by 2035. She also said that Sadiq Khan, the Labour Mayor of London who is opposed to Heathrow's expansion,

U.K. Treasury chief Rachel Reeves said Wednesday that the new Labour government is backing the construction of third runway at London’s Heathrow Airport. Reeves said in a speech that the construction of another runway at the U.