Delays are expected and emergency services are at the scene of a crash near Potters Bar.

https://twitter.com/HighwaysEAST/status/972509999401496579

A vehicle has overturned on junctions 24 to 25 of the M25 anticlockwise, near Potters Bar.

One out of four lanes is still closed and delays are expected to be around 50 minutes.

All emergency services are currently at the scene.