An accident on the A283 in Steyning in West Sussex has closed the road in both directions between B2135 Horsham Road (Steyning) and A24 London Road (Washington).
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The M20 London bound carriageway has now been reopened to traffic but Operation Stack is expected to remain in place into the weekend.
Friday morning's forecast for the east of the region
Friday morning's forecast for the west of the region