An accident involving a lorry and a beige Renault Grand Scenic on the M25 caused delays this morning.
The police and ambulance were called around 7.30am to the incident near junction 22 (St Albans) on the clockwise carriageway.
A man was taken to Watford General Hospital.
The diesel spillage and debris caused by the collision has been cleared up and all lanes have now re-opened and traffic has returned to normal.
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