Where a magistrate convicts an accused of an offence that carries a penalty beyond the magistrate's jurisdictional limits, the conviction is improper and must be set aside on review. In sexual offence cases, magistrates must carefully consider the elements of the offence charged and whether those elements are proved by the facts, particularly regarding penetration for purposes of distinguishing between different sexual offences. Where the facts do not support the main charge but support a competent verdict for a lesser included offence, the court should convict of that lesser offence. Failure by a trial magistrate to apply her mind to the charge and facts amounts to a failure of real and substantial justice warranting setting aside the conviction and sentence on review. Time is of the essence in review proceedings, and delays in the review process that result in an accused serving an improper sentence before the reviewing judge can intervene constitute a serious injustice.