There are long delays on the M4 this morning London-bound following an accident with a lorry and four cars.
Emergency services, including police and ambulance, have been at the scene.
One lane is closed between junction 5, A4 (Langley) and junction 4b M25 and there are long delays.
There is congestion back to junction 11, A33 (Reading).
One hour delays are expected until about 9.45am.
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