Take legal action - police f*ck you every chance they get, unless you are some gyppo pikey scum bag, and then they won't touch you.
They'd sure as hell sew your arse if you made unfounded accusations on their police constabulary on TV/Radio. It's a chance to get at the senior police officers - the ones IMO who are the problem in the police, with their political correctness, and directives to prioritise "speeding and anti-social behaviour" rather than catching burglars and muggers.
If you don't take legal action, what's stopping them, or another force screwing the event next year with a similar claim???