The purpose of this Act is to amend the following Acts in relation to a legal proceeding that relates (wholly or partly) to a charge for a sexual offence—
(a) the Crimes Act 1958 ;
(b) the Crimes (Criminal Trials) Act 1999 ;
(c) the Evidence Act 1958 ;
(d) the Magistrates' Court Act 1989 ;
(e) the Sentencing Act 1991 ;
(f) the Sex Offenders Registration Act 2004 .