The north-west option for building a 3rd runway at Heathrow. I have added the cursus as the red stripe, with the surviving section in purple. This would destroy the last section of the Cursus. It seems to be the preferred option among the technocrats, although HM Government are kicking the whole issue into the long grass. It would involve demolishing and rebuilding the M25 motorway, which is unlikely to go down well with the motoring lobby.
Image credit: your.heathrow.com with cursus added by me
