Police have warned of chaos on the roads near a site where 200 people had gathered for an all-night illegal New Year's rave.
Officers arrived around 1am to the party in Rowberrow Woods near Winscombe, Somerset, but music was still blasting out hours later.
And now an estimated 150 vehicles are trying to leave the site, meaning neighbouring routes have become jammed with traffic.
Several cars had also been parked blocking lanes.
Avon and Somerset Police were dispatched to the scene at around 12.25am.
Organisers, however, failed to call it day until 7.30am when the tunes were finally turned off.
A police spokeswoman said: “One generator was shut down and officers prevented further access to the site.
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“The music was turned off by the organisers by 7.30am and officers are directing people to leave the site in accordance with a direction under the Criminal Justice and Public Order Act of 1994.
“We continue to ask people to avoid the area as there is congestion on local routes due to an estimated 150 vehicles trying to leave, with several having parked blocking lanes.”
It comes as the UK ushered in 2023 in style.
Partygoers defied wet weather to welcome in the New Year after the Met Office issued yellow warnings for rain in England’s South West and southern Wales, and warnings for ice and snow across the Scottish Highlands.
Big Ben bonged in England’s capital as a crowd of more than 100,000 people gathered along the Thames Embankment in central London to watch 12,000 fireworks streak across the sky.
Thousands of Metropolitan Police officers were on duty across the capital, with the force later saying eight people were arrested for offences including assault on police, drunk and disorderly, and possession of an offensive weapon.
While other parts of England also celebrated with fireworks, the North Yorkshire seaside town of Scarborough did not.
An Arctic walrus, believed to be “Thor” – who was spotted on the Hampshire coastline earlier this month, arrived in the harbour earlier in the day.
Scarborough Borough Council cancelled the fireworks display on the advice of British Divers Marine Life Rescue after the organisation expressed concerns that it could cause “distress” to the mammal.
In Cardiff, families partied in the city’s Winter Wonderland, while people in Belfast celebrated at Europa Hotel’s annual Gala Ball.
