A crash is causing delays in Potters Bar. Picture: HCC (Image: Archant)
There are currently long delays on the M25 – which will likely cause a knock-on effect on the A1(M) – following a crash near Potters Bar.
The B556 Mutton Lane is now being used as a diversion route for traffic.
Hertfordshire Highways has asked drivers to avoid the area where possible and expect long delays.
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