although diverging from the subject of sound volumes and noise I think its worth bringing up this point…
many people make the mistake of thinking that the only way whereby the wider effect of raves comes to notice of the cops is either because of moaning locals/farmers or police surveillance of websites and potential venues.
Whilst this is doubtless the main reason why cops become involved, another often denied/forgotten reason is that there is an amount of car crime and other crimes associated with the larger raves and the people who attend them.
every large rave seems to attract toerags who attend the rave in one stolen vehicle which they then destroy on site or abandon; and presumably steal another one to get back home in (sadly often other ravers vehicles are targeted for this purpose).
The cops see the abandoned cars and take details of these (even if the car is burned out they can often still work out what model it was and will speculate on how it came to be there……) ; also for those unlucky enough to lose their vehicles at a rave they usually have to make a police report to get their insurance company to deal with the incident!
So the cops end up logging what must be a significant number of stolen vehicles associated with unlicensed raves (and insurance premiums of younger drivers are pushed up).
there is also a bad trend of people vandalising the surrounding areas whilst “exploring”; breaking into adjacent units, trampling fields, even trashing agricultural machinery..
It may not seem like “major crime” like terrorism etc but it still pushes up the crime figures for the area in which the rave has happened and gives cops/locals more ammunition to claim that these events must be stopped.
