The proper recourse for aggrieved fans is to demand copies of the all the relevant CCTV images under the Data Protection Act. They can demand all images of them not only those showing any alleged offences but any request must be reasonably specific. No doubt FSF Fair Cop could advise. It’s been pointed out to me that this is all brightons doing and not the police so I hope this still applies .
Perhaps the answer was for your fans not to behave like a bunch of ***** in the first place not go crying to FSF about the unfairness of it all.