Plans for a new runway at the hub airport were thrown into doubt in February when the Court of Appeal said the government’s decision to permit the development did not take into account its climate commitments made at the Paris Agreement in 2016, which meant it was unlawful.
The airport appealed this decision and the Supreme Court, which is the highest court in the UK, granted permission on Thursday (7 May) for this appeal to be heard.
The court said it had yet to set a date for a hearing on Heathrow’s third runway.
Last week, the airport said the third runway project was likely to be delayed by "at least two years" due to the coronavirus crisis.
