Flights are now back to normal at the UK’s biggest airport after a protest led to some cancellations.
Angry at plans for a third runway at Heathrow, members of the direct action group “Plane Stupid” chained themselves together across a runway already in use.
13 flights were cancelled during the seven-hour interruption. Heathrow says operations are now back to normal.
Concerns have been voiced over security after it emerged the group cut through a perimeter fence to gain access.