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Dozens of Hells Angels bikers surround police as they attempt to arrest a rider, in a tense roadside clash.
Drivers faced chaos as bikes were abandoned in the middle of the road at a junction as riders went to where police had marched the outrider to.
Shouts of "Back off, back away" can be heard in footage recorded of the incident.
Two police can be seen frogmarching the biker to the side of the road in Blackpool as the Hells Angels bikers – all dressed in black with helmets on – follow in their droves.