R v Hansen

The Supreme Court of South Australia, constituted by Sulan, Vanstone, and White JJ, heard an appeal against a sentence imposed on the appellant. The appellant had been charged with murder but was ultimately convicted of manslaughter. The sentencing judge imposed a head sentence of 12 years imprisonment with a non-parole period of 10 years. The appeal concerned the propriety of this sentence, particularly the non-parole period.

The central legal issues before the Court were whether the sentencing judge erred in several respects. Firstly, it was argued that the judge failed to adequately consider the mitigating effect of the appellant's pre-trial offer to plead guilty to manslaughter on the grounds of excessive self-defence when fixing the head sentence. Secondly, the appellant contended that the head sentence was manifestly excessive given the circumstances of the offence and his personal situation. Thirdly, the appeal challenged the judge's refusal to find special reasons, beyond those already identified under s 32A(3)(c) of the *Criminal Law (Sentencing) Act 1988* (SA), to reduce the mandatory non-parole period, specifically arguing that the victim's conduct constituted a special reason under s 32A(3)(a). Finally, the appellant argued that the judge erred by failing to set a non-parole period of less than the statutory minimum of four-fifths of the head sentence.

The Court addressed the appellant's argument regarding the non-parole period, noting that the sentencing judge had set a period slightly exceeding the mandatory four-fifths proportion without providing specific reasons. The Court found that the judge was entitled to use rounded figures that approximated the statutory proportion, as there was no expectation for judges to apply the minimum mathematically to arrive at precise periods of time. The Court concluded that the sentence imposed was not manifestly excessive and dismissed the appeal. The Court also noted that the jury's verdict of manslaughter on the basis of excessive self-defence was consistent with the appellant's earlier offer to plead guilty on the same grounds.