The Conservatives have announced they will not fight the by-election triggered by former MP Zac Goldsmith, who quit in protest over the Heathrow expansion.
A statement by the party said they "disagree" with Goldsmith but "understand his position".
The statement added: "He has been a hard-working champion for the people of Richmond Park - as we know he will continue to be if they re-elect him as their Member of Parliament - so we will not be putting up a candidate against him at this by-election."
Tory MPs are taking lumps out of each other on Heathrow, grammar schools and - above all - the true meaning of Brexit.
Environmentalist Goldsmith called the move "catastrophic" - and announced he will now stand as an independent in protest.
The expansion of the London airport will affect the whole of the UK, with more domestic routes, while impacting air fares and house prices.