This was vigorously opposed by local authorities and residents groups in the vicinity of Heathrow, the Mayor of London and various non-governmental environmental organisations.
"We have always been clear that Heathrow expansion is a private sector project which must meet strict criteria on air quality, noise and climate change, as well as being privately financed, affordable, and delivered in the best interest of consumers", Shapps said in a statement. "We also take seriously our commitment to the environment". "We will carefully consider this complex judgment and set out our next steps in due course", Transport Minister Grant Shapps said. Recently he seemed to be going back on this promise, so it will be interesting to see how he and the rest of the government react to this ruling.
The judges ruled that the government did not take into account its commitment to the Paris Agreement on climate change in making its decision.
It said that the government had a duty to take into account the Paris climate agreement, which seeks to limit global warming.
The judge said that the government's policy was unlawful as it failed to take into account climate change commitments it made when it signed up to the Paris Agreement.
"The government has announced it will not appeal today's judgement".
The project to expand London's Heathrow airport was first proposed in 2009, and it has had a turbulent journey since.
"The argument has to be loud and clear that we're living in a climate emergency, and it must be no to all airport expansions", Polanski said, adding that other governments around the world could learn from the ruling.
He told the PA news agency: "There's no global Britain without Heathrow expansion".
Prime Minister Boris Johnson's administration said it wouldn't appeal the ruling, but it could, in theory, return with a new proposal for the expansion that does address climate targets.
And appearing to distance No 10 from the project, he said the runway blueprint had been produced under the "previous government".Mr Shapps said: "It is critical that vital infrastructure projects, including airport expansion, drive the whole United Kingdom economy, level up our regions and unite our country".
In June 2018, some MPs mockingly shouted in the Commons "where's Boris?" as the Foreign Secretary was visiting Afghanistan at the same time Tory MPs were ordered to vote in favour of a third Heathrow runway.
"Expanding Heathrow, Britain's biggest port and only hub, is essential to achieving the Prime Minister's vision of Global Britain", they said.
Responding to the ruling, a Heathrow Airport spokesperson said the challenge on climate change front was "eminently fixable" and pledged to "get Heathrow done" regardless.
Travel and Tourism Analyst at GlobalData, Johanna Bonhill-Smith, said: "Many airlines were banking on the third runway expansion at Heathrow airport to reach more markets and increase capacity at the UK's busiest airport, but have now been dealt a major blow as the expansion has been blocked".