The truth about the number of illegal raves in the Cambridge area has been revealed – as the outdoor party season kick-starts.
And police have warned illegal ravers that their parties "will not be tolerated" and that sound equipment will be seized and drivers on the site will be breathalysed.
Officers have also issued tell-tale signs to spot a rave and urged people to report them to officers.
Illegal raves in the county have kept residents awake all night and can destroy crops.
One farmer was so furious he poured slurry over the field where a rave was being held.
How many raves?
Latest figures show that police in Cambridgeshire have been called to a total of 292 raves from 2009 to 2017.
In 2009 police were called to 35 illegal raves, 22 in 2010 and 35 the following year.
In 2012 officers were called to 44 illegal parties, 34 the following year and and 40 in 2014.
In 2015 they were sent to break up or police 32 raves and 27 in 2016. Last year (2017) there was 23 raves reported to the Cambridgeshire force after a crackdown the previous year.
And here is the number of illegals raves in neighbouring Hertfordshire.
A Cambridgeshire police spokeswoman said: “Illegal raves will not be tolerated and where appropriate any sound equipment on-site will be seized. Attendees leaving such an event, intending to drive, are also likely to be breathalysed.
"There are signs to look out for including lots of cars and groups of people gathering in unusual places such as industrial sites, small villages or remote rural areas.
"Also cars and vans delivering generators to rural locations. If you see any signs or have information about a potential illegal rave, report online at www.cambs.police.uk/report or call 101.”
Festive rave – but it was illegal
A man who helped organise a 15-hour Christmas Day rave was fined thousands of pounds.
Over 400 people piled into a disused warehouse in the Glebe Road area of Huntingdon on Christmas Day last year (2017).
The party goers caused such a racket that police got 44 separate calls from distressed and angry families across Huntingdon.
Anthony Ross, 23, was fined £3,000 and given a formal warning after he admitted causing a public nuisance in connection with the massive rave.
As police raided the rave they seized the sound system being used and two white vans. Ross, of Mill End Green, Great Easton, Essex, later came forward to claim them.
He was summoned to appear before Cambridge Magistrates' Court on April 6 where he was fined, ordered to pay costs and issued with a community protection warning by police and the local council.
5,000 people stopped from going to illegal rave
Police took to social media to stop a massive illegal rave for 5,000 people in Cambridgeshire.
Officers were dealing with a surge in illegal raves in the county.
A report to policing area panel meetings sets out how the force tackled one rave that was planned to be held in Barton and may have seen up to 5,000 people attend.
The force teamed up with the landowner and council to prevent the illegal party.
Sleepless in Harston
Villagers were kept awake all night when about 200 people descended on nearby farmland for an all-night rave on land at Harston.
Police were alerted to the music event off Shelford Road at about 3am on Sunday, July 9.
Where they rave
Illegal raves have taken place over the last few years in Burwell, Grantchester, Arrington, Swavesey, inside an empty warehouse on Clifton Way, Cambridge, near Ickleton in Saffron Walden and a warehouse in March.
Officers were called to a rave on fields between the villages of Arrington and Longstowe this year, where up to 200 people attended but there were chaotic scenes.
A man was arrested after driving a tractor towards illegal ravers – and police cars were covered in stinking slurry.
Why the surge in raves
A previous surge in illegal raves in and around Cambridge was blamed on the closure of pubs and the demise of nightclubs.
Chief Inspector James Sutherland, area commander for South Cambridgeshire, told the News he had noticed an upward trend in raves.
He vowed to stop any illegal parties in an effort to keep youngsters safe from drugs and crime.
The resurgence of the illegal parties has been linked to the closure of pubs.
Nearly half of nightclubs in Britain have shut their doors in the last decade, according to industry figures.
In 2005, there were 3,144 clubs across the UK compared to the 1,733 in 2015, according to the Association of Licensed Multiple Retailers (ALMR), an organisation which represents venues.