R v Barke

The appeal concerned a conviction and sentence imposed on the appellant, R v Barke, in the Supreme Court of South Australia. The appellant had initially been charged with trafficking in a controlled drug. Following discussions between his solicitor and the Director of Public Prosecutions, the appellant agreed to plead guilty to the lesser offence of supplying a controlled drug. However, at the sentencing hearing, the appellant mistakenly pleaded guilty to possessing a controlled drug with the intention of supplying it to another person, an offence under s 33I(b) of the Controlled Substances Act 1984 (SA), rather than the agreed offence of supplying.

The central legal issue before the Full Court of the Supreme Court of South Australia was whether this discrepancy constituted a miscarriage of justice. Specifically, the court was required to determine whether the appellant had genuinely intended to admit guilt to the offence to which he actually pleaded.

The court reasoned that a miscarriage of justice had occurred because the appellant's plea of guilty was not to the offence he intended to admit. The mistake arose from the appellant not having a copy of the Information at the time of pleading, leading him to plead to a charge different from the one agreed upon during negotiations. The legal principle applied was that a plea of guilty must represent a genuine admission of guilt to the specific offence charged; a plea entered under a fundamental misunderstanding of the charge, even if unintended by the parties involved in the negotiations, could vitiate the conviction.

Consequently, the Full Court allowed the appeal, quashed the conviction and sentence, and remitted the matter for a new trial.