Two lanes of the M25 clockwise are closed near Potters Bar. Picture: Archant (Image: Archant)
Two lanes of the M25 clockwise are closed between Junction 24 for Potters Bar and Junction 25 for Cheshunt after a two-vehicle crash.
Lanes three and four are closed after the crash, with one vehicle leaking fuel onto the carriageway.
Emergency services are at the scene, with congestion lasting around seven-and-a-half miles.
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