“THIS is where we had the psychedelic trance,” explained the DJ and part-time percussionist giving the guided tour of a multimillion-pound mansion in Primrose Hill.

“It was a peace party. Full of fun-loving hippies. In the other rooms we had funky house and Indian chill-out music. We tried not to let people out on the tennis courts.”

He excused the graffiti — “Home is wherre [sic] the hurt is” — scrawled under a wallhanging of a green worm on a toadstool, hookah-pipe in hand. The slogan, he said, must have been written after the party, which attracted 800 people to the otherwise immaculate enclave in North London on Saturday night. “We would have spelt it correctly.”

The 35-year-old DJ was determined to respond to criticism from neighbours who are outraged that squatters are living — and partying — in the eight-bedroom mansion, which has been sold to an unknown Russian businessman within the past year.

The father of one denies their claims that syringes are being used on the premises and is keen to point out that the empty beer cans, wine and tequila bottles that litter the garden do not encroach on either the neighbours’ properties or the public park.

Residents of Primrose Hill, home to an elite group of moneymakers and celebrities, have been worried increasingly by the people who have been passing through 1 Radlett Place since its former owner, a well-respected economist, sold his family home of more than 30 years in May last year for £14 million.

Their worries turned to anger last weekend when hundreds of people poured through the gate leading from the public park for a 24-hour party, the third such celebration this month, albeit on a larger scale.

“What’s more important?” the musician and party-organiser wanted to know, “the property prices for people who have billions in their bank accounts, or giving happiness to 800 people?”

The man, who declined to be identified, insisted that no one was charged entry, only asked to make a donation at the door. He said metal detectors were placed at the gate, and that teenagers were discouraged.

“The people who live here are respectful,” said a young man with blue hair and a nose ring who emerged from the kitchen, accompanied by a smiling girl with long, red hair and leopardskin tights. “There were no drugs here that wouldn’t have been in any club.”

The group admits that the party will be their last. Bailiffs are expected to serve an eviction notice on Monday morning, accompanied by Metropolitan Police officers.

However, for Kitty Massey, whose mansion on Avenue Road faces the squatters, the damage has been done. “The horse has bolted,” she said. “When they move out they will simply find somewhere else to go. It is a zoo.”

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