Heathrow Airport has published its masterplan for expansion, with a third runway and the terminals set to be completed by 2050.
The proposal includes rerouting the M25, diverting rivers and demolishing hundreds of homes, including an entire village.
The plan is now open for consultation, and will be met with fierce opposition from environmental campaigners and people living nearby.
The public will be able to have their say on plans to manage the environmental impacts of expansion, including a proposed Heathrow Ultra Low Emissions Zone, HeathrowVehicle Access Charge and a proposed six-and-a-half-hour ban on scheduled night flights.
Travel expert Simon Calder gave us some reaction and more detail for the plan.