The M25 is badly congested near Potters Bar. (Image: Archant)
Drivers on the M25 motorway near Potters Bar are suffering serious delays after a collision, with congestion likely to persist for more than an hour.
According to the Highways England, drivers on the clockwise carriageway between junctions 23 ( South Mimms) and 26 (Waltham Abbey)will be delayed for up to an hour and a half.
It predicts traffic will clear between 10.30am and 10.45 am.
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