A man has died after two airport vehicles were involved in a “serious accident” on the airfield at Heathrow.
Police and paramedics were called to the scene of the incident shortly after 6am on Wednesday morning, which the airport has said involved two male members of staff.
London Ambulance Service confirmed that one of the men, who was in his 40s, went into cardiac arrest.
Despite “extensive efforts to resuscitate him” at the scene and on the way to a west London hospital, he was later pronounced dead.
A Heathrow spokesman said: “We can confirm that following a serious accident involving two vehicles on our airfield, an airport colleague has passed away.
“Our deepest condolences go to the family and friends affected by this accident.
“We will be fully cooperating with the police in the investigation which will follow.”
The other man involved in the accident suffered a suspected broken shoulder and was also taken to hospital.
Police said his injury was “not life-threatening or life-changing”.
The Health and Safety Executive have been informed of the incident and police remain in attendance, but no arrests have been made.
Some passengers were forced to leave their planes as a result of the incident, with delays to a number of flights reported by people on the tarmac and at their gates.
Most of the reported delays were departures from Terminal 5, with British Airways acknowledging disruption to “a small number of our flights”.