Three vehicles have been involved in a crash on the M25, near Potters Bar and South Mimms.
The incident took place at around 3.28pm this afternoon (Thursday, December 28) between junctions 24 and 23 on the road's anti-clockwise carriageway.
A full closure was put in place, with two lanes now reopened according to National Highways.
Live article: M25 closed after crash near Potters Bar
A spokesperson for Hertfordshire Constabulary said: "Police were called at around 3.28pm today (Thursday 28 December), following a multi-vehicle collision on the M25 anti-clockwise.
"The incident involved three vehicles, and a full closure has been put in place between junctions 24 and 23 while we work to establish any injuries and clear the carriageway.
"Motorists are urged to please avoid the area and to seek an alternative route where possible."
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