Three people have been taken to hospital after a pile-up on the M4.
Emergency services were called at 1.35pm on Sunday to a multi-vehicle collision which led to the eastbound carriageway being shut.
Emergency services, including National Highways traffic officers, arrived at the scene and the westbound route was blocked to allow the air ambulance to land.
A London Ambulance Service spokesman said: “We were called at 1.35pm today (Sunday) to reports of a road traffic collision on the M4.
“We sent a number of resources including three ambulances, a medic in a fast response car, and an incident response officer.
“Our crews treated patients at the scene, and took three people to hospital.”