You have nothing to worry about so the best way to go is to treat it like they are and bring someone in with you
You are allowed bring anyone you like so pick someone that’s not local
Take it seriously and make sure it costs them money also claim any expenses
Also tell them you are talking to a solicitor because they have made a charge knowing that you are not guilty
I would love to be in your position because i would take them for what i could
It might not seem a big deal but that’s in there eyes and they are not expecting you to put up a fight
It’s all about who talks the best talk on the day