Delays are occurring at London Heathrow this morning after climate change protesters cut through a fence and chained themselves together on the northern runway.
Twelve Plane Stupid demonstrators, who are opposed to LHR expansion, entered the airport at 0330.
The runway was closed until 0620, when it reopened.
The protesters remain at one end of the runway and police are at the scene "dealing with the incident".
Heathrow said in a statement: "Both runways are open although there will still be delays - we are sorry for the disruption to passengers. Our priority remains to ensure the safe running of the airport."
Earlier this month, the Airports Commission inquiry into airport expansion in south-east England recommended a third runway at LHR (see news, July 1).
Graham Smith
