Traffic backed up for miles as Sonisphere festival goers arrive

Traffic is at a snailspace on the A1M northbound from south of Welwyn to Stevenage as festival goers make their way to Sonisphere Festival at Knebworth.

An accident between Junction 6 and 7 of the motorway has compounded the problem with one lane blocked.

Police were called to the collision between a flat bed lorry and a car at 2.30pm.

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