The London Ambulance Service was called at 11.55pm last night (March 21) to reports of a crash on Bedfont Road in Feltham.
Ambulance crews, an advanced paramedic, an incident response officer, members of the hazardous area response team (HART) and London’s Air Ambulance were sent to the scene.
Three people were declared dead at the scene.
Three other people were taken to hospital.
A spokesperson for the London Ambulance Service said: “We were called at 23:55 yesterday (31 March) to reports of a road traffic collision on Bedfont Road, Feltham.
“We sent resources to the scene, including ambulance crews, an advanced paramedic, an incident response officer, members of our hazardous area response team (HART) and London’s Air Ambulance.
“Our crews treated six people.
“Sadly, three people were declared dead at the scene.
“We took the other three patients to hospital.”