Problem is in our county that the police are so overstretched that there is no time to stop these muppets inbetween blatting to different jobs, although some of the local community teams will run some operations to stop this.
If there is an area where this happens a lot (especially at a certain time) ask for a CBO to come round and have a chat about it and ask him or her to organise an operation to target it.
Failing that get the parish council to kick up at the next meeting about it...
OR
enough letters of complaint will p*ss the inspector of that sector off so badly that he will have to do something about it....all aboard for fun times.
