Watch as columns of tractors roll down M4 as furious farmers head to London for Budget protest

This is the moment columns of tractors roll down the M4 ahead of a planned Budget day protest in central London.Dozens of the farm vehicles, some draped in Union Flags and St George's Crosses, can be seen descending on the capital - in the face of Metropolitan Police restrictions banning tractors and agricultural machinery from Whitehall.Farmers had planned to protest the hated Family Farm Tax outside Downing Street on Wednesday while Rachel Reeves delivered her Budget before the force took action.Last night, it emerged the decision to muzzle the protest originated from "someone very high up", leaving organisers stunned, according to the Daily Express.WATCH THE CLIP ABOVE FOR MORE