A 200-strong group of Brits invaded West Beach in Newhaven, East Sussex, with a protest picnic this weekend - after becoming fed up of being told by its French owners that they can't use it.
The French-owned Newhaven Port and Properties sealed the beach off to the public back in 2008, over safety issues.
It is thought the owners feared they could be sued if a member of public injured themselves on the crumbling sea wall and steps.
The Court of Appeal ruled the beach could be listed as a village green, which would give local residents the right to use it.
But the owners appealed to the Supreme Court, and it has since remained closed.
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The Newhaven Village Green Preservation Society staged the sit-in picnic protest on Saturday afternoon after climbing over the beach's barrier, and the town mayor was even involved in the protest, reports the BBC..
The spot was once a popular tourist beach, and is the only sandy stretch for miles.
Town councillor Carla Butler, 32, told The Sun: "We have been trying to help and negotiate with them since 2006. We even offered to pay for improvements.