Traffic was stopped on the M25 this morning following a multi-vehicle crash near Potters Bar.
Highways England is currently dealing with the collision on the clockwise carriageway between Junction 24 for Potters Bar and 25, which happened at around 7.10am.
Delays have already stretched back to Junction 23 for South Mimms and motorists are being advised to plan ahead before travelling.
Two lanes have since been reopened after the vehicles were moved. It is currently unclear if anyone has been injured.
More follows.
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