M25 clockwise closed, queueing traffic, long delays due to serious accident, three lorries and two cars involved between J29 A127 (Romford) and J30 A13 (Lakeside / Tilbury).
First reported at around 12:45, several lorries and cars are involved, near the start of the exit slip road for J30.
Heading towards the QE2 Bridge. The closure is now in place but there is a large amount of trapped traffic which needs to be released.
Diversion: via the hollow triangle
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