Detectives are on the lookout for these revellers after police were pelted with bottles trying to break up a warehouse rave.
After catching wind of the illegal event in South Gloucestershire on Halloween, officers were quickly deployed to stop more people entering the premises.
But by the time a cordon was in place an estimated 500 and 700 people were already inside, some of whom lobbed objects at police as they tried to do their jobs.
Unlicensed music events are being held across the country despite coronavirus rules on social gatherings and fines of up to £10,000 for organisers.
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