Birdie, I'm afraid I'm going to disagree with you. Once you have made a statement you cannot withdraw it, you can only provide a further statement saying that you no longer wish to give evidence and stating your reasons. This will then be forwarded to the CPS who will consider whether there is a realistic prospect of conviction without the said statement.
If the offence is serious enough (which it seems to be in this case) and is a public interest case (as sexual offences generall are under CPS guidelines) CPS may well consider proceeding with the case using the statement. If this is the case and Bearaz refuses to attend court then a witness summons can be issued against her and she can be arrested and taken to court. Obviously when at court she can refuse to actually take the stand but then could be found in contempt of court.
Birdie is correct regarding the special measures that can be provided at court ie screens etc, but a screen does not offer anonymity, it only hides you from the Defendant and your name will still be called in court. Generally the only people who are ever given complete anonymity in court are undercover police officers and such. Even 'supergrasses' as such give there own name whilst giving evidence before then entering the witness protection programme once the trial has finished.
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