Hi again appollo:
Thanks for that. The bad news is that, on conviction, common assault is punishable by a maximum custodial sentence of six months, or a fine, or both. The good news is that, of course, the offence would first have to be proved which, if neither you nor your estranged wife has any other witnesses, may come down to how well the prosecution and defence cases are presented by the respective solicitors.
A possible negative for you could be the fact that you intend to plead not guilty. That's not a criticism, for if you honestly believe that her injuries were either accidental or as a result of you defending yourself, then go for it.
However, it will result in a stiffer sentence if you are convicted, and it will mean more stress for both of you, given that the pair of you will have to go through the angst of having your dirty laundry aired in public.
Sorry, but believe me you'll be far better off only having to go to Magistrate's Court instead of Crown. For a start, Crown Courts deal with more serious offences for which the punishments are in essence more severe. Plus the fact that you have a Judge directing twelve jurors, as opposed to usually three Magistrates being advised by the Clerk of the Court where sentences are more lenient. I know which I'd rather have.
Anyway, make sure also that you comply with your Bail conditions of not making contact with her. Everything should go through your Solicitor, then you don't leave yourself open to any accusations. And I think you'll need to forget this "bad character evidence" which I believe is applicable, I believe, to Crown Court cases?