Theresa May is facing a Tory revolt over Heathrow’s third runway as her own MPs vow to fight the move and warn the “betrayal” will not be forgiven by supporters.

The Sunday Telegraph understands up to 60 Conservative MPs are against expansion at Heathrow in the biggest parliamentary rebellion since Mrs May took power.

Zac Goldsmith, the party’s candidate for London mayor just months ago, has renewed his promise to quit as an MP if the Prime Minister gives the go-ahead to the project.

He warns in a piece for this newspaper that the Tories would be “badly damaged” with core supporters in West London if Heathrow’s bid is approved, raising the possibility of council losses.