A minicab has crashed into the side of Heathrow's Terminal 5 after the driver suffered a heart attack.
Images posted to social media appeared to show the black Volkswagen car had hurdled a metal fence and slammed into the side of the building.
The incident occurred after 5am on Monday morning outside the departures entrance to the terminal, an airport spokeswoman told The Independent.
"There was a road incident this morning and the emergency services were called," she said. "One lane of the departures forecourt was closed down and our services were not impacted."
A spokeswoman for the London Ambulane Service said emergency services were called at 5.23am and that a number of paramedic resources were dispatched.
"We treated one patient at the scene, a man reported to be in his sixties, who was in cardiac arrest," she said. "He was taken as a priority to Hillingdon Hospital."
A spokesperson for Hillingdon Hospital confirmed the minicab driver had been taken in for treatment this morning. He was described as being in "critical" condition.
The incident added to the travel chaos caused by thick fog across London on Monday morning, which forced many airlines to cancel flights to and from Heathrow.
Some flights have been diverted to London Gatwick, while London City airport was effectively shut down by the loss of visibility.
