Prince Andrew has been caught unleashing a torrent of expletives at builders installing speed bumps outside his home – which RadarOnline.com can reveal has sparked huge fresh tensions with his brother King Charles .

"What the f--- are you doing now?" the disgraced Duke of York, 65, barked while riding his horse around a mile from Royal Lodge, according to an eyewitness. Article continues below advertisement

Prince Andrew's Confrontation

Andrew confronted workers tasked with putting traffic-calming humps along the 4,800-acre Windsor Great Park estate, part of Charles's domain as Ranger of the park, which stretches from Windsor Castle to Virginia Water.

One speed bump even sits along Andrew's usual driving route out of his 31-room mansion, forcing the former royal to slow down.

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