The Autonomous Nation of Anarchist Libertarians came under fire on Saturday when the thugs arrived outside the Belgravia mansion.
The self-proclaimed anti-fascists have been living inside the £15million property, owned by a Russian billionaire, since last Monday.
Seemingly riled by their presence a group of men were filmed approaching the building in Eaton Square, demanding the squatters leave.
The squatters came under attack on Saturday
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Squatting should be legalised
Tom, professional squatter
In the shocking footage, uploaded to YouTube, the thugs can be heard shouting abuse from the pavements of the exclusive London street.
As the yobs, who covered their faces with scarves, become increasingly hostile, a clattering sound can be heard as the group begin launching missiles at the home.
The video picks up a smashing sound with what appears to be glass bottles that have been thrown at the squatters gathered inside.
The gang hurled abuse and missiles at the squatters in Belgravia house
Squatters were filmed using fire extinguishers to repel the attack
As the situation grows increasingly volatile, the settlers are forced to fight back.
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They can be seen spraying fire extinguishers from the window in a bid to repel the attack.
Between 25 and 30 activists are thought to be living inside the property, which is thought to have remained empty since bought by oligarch Andrey Goncharenko in 2014.
Despite the property standing idol for over two years, the squatters have been served a court date of February 7, before bailiffs try to force them out three days later.
The squatters took over the exclusive London property last Monday
One of those living inside, Tom, a professional squatter, said the activists were making a point by “fighting capitalism with capitalism”.
"It wasn't particularly politically aimed to start with – I just thought it was funny because he's rich – but he's just left this major investment to rot,” he said.
"It's stale assets, stale money – if he has plans to renovate, why can't he let the homeless stay in the meantime?"
Tom is one of those squatting inside the house
The house, built in 1829, was granted planning permission in September, but no work has started since.
The palatial home is one of four purchased by the Russian billionaire over a three-year spending spree, including Hanover Lodge in Regent's Park, for which he paid £120 million – making it one of the UK's most expensive homes.
Tom believes part of people’s opposition to squatting comes from a “distrust of the homeless”.
"We've got a court date on February 7 and the likelihood is we'll have three days before they try and eject us,” he said.
"Squatting should be legalised – why don't they open up vacant, habitable buildings and assign volunteers to keep watch and look after homes?”
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