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Drivers heading into Surrey on the M25 face delays of around an hour after a crash.
Two lanes have been closed at J8 on the M25 near Reigate, with severe delays building up.
The entry slip road has also been shut due to a spillage for the two-lorry crash, with the congestion tailing back to J5 for the M26 and the A21 near Sevenoaks.
The lorries have been moved to the hard shoulder and the spillage is being cleared.
There are now reports of a broken down vehicle in the queues between J5 and J6.