Police were called at 06:06hrs on Wednesday, 14 February following a collision between two airport vehicles on the taxiway at Heathrow Airport.
One male, is believed to have sustained a broken shoulder; his injuries are not life-threatening or life-changing.
Another male, aged in his 40s, was taken to a west London hospital with serious injuries. He died after on their way to hospital.
Officers have informed next of kin. We await formal identification to take place.
A post-mortem will be scheduled in due course.
There have been no arrests.
The Health and Safety executive has been informed.
Officers from the Met’s Serious Collision Investigation Unit are investigating.
An LAS spokesman said:
‘We were called today at 6.03am to Heathrow Airport, to reports of a collision.
‘We sent an incident response officer, an advanced paramedic, a cycle responder and three ambulance crews to the scene. ‘We treated two patients – both men.
One was treated for a shoulder injury and taken to hospital.
The second later went into cardiac arrest and extensive efforts were made to resuscitate him both at the scene and on the way to hospital.’