Jakey,
This is getting to be quite worrying, as you are posting questions on different sites. You say no one has answered your questions, but those who have responded have done so to the best of their ability, and given you the most sensible advice, in that you really do need some professional advice. Many solicitors offer half-an-hour of advice for free. The least you could do is approach one, and let him/her give you their professional opinion. Have read the comments from your respondents, everyone, including myself, are expressing their concerns on your behalf, that you will be in over your head. I fully appreciate your predicament, and how you must feel being accused when you say you are innocent. For the case to come to court at all, indicates that the prosecutors hardly consider it to be minor. And the questions you are asking are points of law which we who are responding to you out of concern are not qualified to answer. I do wish you the best of luck, but would feel a lot happier if you would take advantage of some sound legal advice.