Heathrow Third Runway: £33bn M25 Tunnel Plan Puts Ancient Village of Harmondsworth at Risk
The UK government has endorsed Heathrow’s £33 billion north-west runway plan, which requires tunneling a section of the M25 and threatens much of Harmondsworth village. The scheme would increase Heathrow’s capacity to 150 million passengers a year. Ministers named Heathrow’s proposal as the preferred option for national policy but have not granted full planning permission. Construction could begin by 2029.