Because of the nature of these offences, it would be extremely unusual for a victim to not give evidence if the accused is challenging the charge/s.
In matters involving serious allegations of sexual assault such as rape or sexual penetration, adult complainants may be required to give evidence both at a committal hearing in the Magistrates' Court and also later at a trial hearing in the County Court or Supreme Court. Child complainants (aged under 18 at the time charges are filed) and cognitively impaired complainants do not give evidence at a committal hearing but may be required to give evidence as part of a trial hearing in the County Court.