Zac Goldsmith, the Conservative candidate for mayor 2016, is set to resign from his commons seat.
In a tweet posted within minutes of the government announcing its decision, Mr Goldsmith wrote: “Following the Government’s catastrophic Heathrow announcement, I will be meeting my constituents later today before making a statement.”
Theresa May and the cabinet announced their proposals, and immediately sparked protests and lawsuits – even from within her own party.
“After decades of delay we are showing that we will take the big decisions when they’re the right decisions for Britain, and we will ensure they’re right for ordinary working people too.
“Airport expansion is vital for the economic future of the whole of the UK and today also provides certainty to Londoners. Businesses will know that we are building the infrastructure they need to access global markets. Ordinary, working people will know that my Government backs jobs and growth.
“We want the benefits of a new runway as quickly as possible, but we will also make sure London and taxpayers get a good deal.”