Nguyen v The State of Western Australia

The case of Nguyen v The State of Western Australia [2023] WASCA 151 involves an appeal against sentence by the appellant, Jason Nguyen, who was sentenced to a total effective sentence of 12 years and 6 months' imprisonment, backdated to commence on 25 February 2022. Nguyen was convicted of attempting to possess a trafficable quantity of methylamphetamine, and two counts of dealing with or being in possession of money that is the proceeds of a crime. The appeal focuses on the application of the parity principle in sentencing, particularly in relation to the disparity between the sentence imposed on Nguyen and that imposed on his co-offender, X. The appeal was heard by Mazza JA, Beech JA, and Vandongen JA of the Court of Appeal of Western Australia.

The court considered three grounds of appeal. The first two grounds challenged the sentencing judge's findings regarding the relative sophistication of the appellant's offending compared to X's, and the treatment of the appellant's possession of large quantities of cash as an aggravating circumstance. The court found that the sentencing judge was entitled to conclude that the appellant's offending was more sophisticated than X's, and that his possession of large quantities of cash was relevant to the circumstances of the commission of the offence. The court also held that the sentencing judge did not err in applying the principle against double punishment.

The third ground of appeal argued that the disparity between the sentences imposed on Nguyen and X for their possession of the same quantity of methylamphetamine gave rise to a justifiable sense of grievance. The court determined that the significant differences in the relevant offending conduct made it difficult to compare the seriousness of the offences. However, it found that the disparity between the sentences was justified, given the differences in the roles played by Nguyen and X, as well as the mitigating effect of X's cooperation with the authorities. The court concluded that the sentencing judge did not err in applying the parity principle and that the disparity between the sentences did not give rise to a justifiable sense of grievance.

As leave to appeal was refused in relation to all grounds, the appeal was dismissed.