I'm speechless! (well, almost). If this went to Court and I was a magistrate I would chuck it out on the basis that a prosecution was totally disproportionate to the offence (if any) and so a complete waste of public money.
In the days when there was some commonsense in this country this sort of thing just wouldn't happen. At most, the police would have a quiet word and say don't do it again (always assuming what you have done actually is an offence, and I'm having trouble understanding that it is).
I hope the police are not stupid enough to proceed, but if they do you will presumably have to waste money asking a solicitor for advice.