Sinden v Director of Public Prosecutions (NSW)

In Sinden v Director of Public Prosecutions (NSW), the plaintiff appealed against a conviction made in the Local Court, where they were charged with assault occasioning actual bodily harm and an alternative charge of common assault. The plaintiff raised a defence of self-defence, which the Magistrate found had not been disproven by the prosecution beyond reasonable doubt in relation to the principal charge. However, the Magistrate still convicted the plaintiff on the back-up charge of common assault. The Crown conceded an error in the proceedings.

The primary legal issue before the court was whether the Magistrate's decision to convict the plaintiff on the alternative charge of common assault was correct. The court needed to determine if the error in convicting on the back-up charge, despite the self-defence argument being accepted in relation to the principal charge, warranted the appeal being allowed and the conviction being set aside.

The court held that the error made by the Magistrate was significant enough to merit the appeal being allowed. The court recognised that the self-defence argument had not been disproven by the prosecution in relation to the principal charge, and thus, the conviction on the back-up charge was not justified. Consequently, the conviction was set aside, and the appeal was allowed. The court's reasoning was based on the need to ensure that legal proceedings are conducted correctly and that the principles of self-defence are upheld appropriately.