THE M25 is currently shut through the Potters Bar section, causing long delays, after a car transporter overturned on the motorway.

The road is shut between junction 23, for South Mimms, and junction 25, for Enfield.

The Highways Agency said the motorway is not expected to open until 4pm today (Friday) pending police investigations into the accident.

Diversions are in place, and one source told the Welwyn Hatfield Times traffic was causing “mayhem” through Potters Bar.