Flights resume after outage but delays and cancellations remain - Airport boss has apologised to passengers for day of ...

Heathrow Airport will be closed all day on Friday after a huge fire at a nearby electrical substation caused a significant power outage which has sparked travel mayhem across the world.

Counter-terrorism police are leading the investigation into the fire which caused 1,300 flights to be disrupted, as detectives say there 'was no foul play'.