Drivers are facing long delays on major roads surrounding the M25 after a traffic light failure.

Traffic is heavy on the M25 after the failure at junction 28 for the A12, near Brentwood.

This is causing delays on the M25 anticlockwise back to junction 29 for the A127 and to junction 27 for the M11. 

Traffic is also slow on the A12 London-bound back to junction 12 near Shenfield.

An average speed of 15 miles per hour is being reported.