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Motorists were told to avoid the M25 in Hertfordshire following a multi-vehicle crash near South Mimms.

Three of the four lanes were closed anticlockwise between junctions 23 and 22, with Highways England already predicting delays are set to last until around 1pm this afternoon (October 27).

Traffic was said to be not moving between junctions 22 and 24, with slow moving traffic on the approach from junction 25 near Waltham Cross.

Road users took to Twitter to warn other drivers of the delays.

Robert Cole tweeted: "Driving to Liverpool on M25 near Potters Bar. Really bad accident up ahead. Puts life in perspective. Hope all involved are OK."

This was the second serious accident on the M25 in Herts today, after one person was taken to hospital following a collision near Waltham Cross at around 7am this morning.

We'll be running live updates on this incident, which will load below.