French CJ, Hayne, Crennan, Kiefel, Bell, Gageler, Keane JJ
Criminal law – Appeal – Prosecution appeal against sentence – Where appellant pleaded guilty to manslaughter of de facto spouse – Where appellate court resentenced appellant on ground that original sentence manifestly inadequate – Whether appellate court failed to correctly apply principles attending disposition of prosecution appeal against sentence on ground of manifest inadequacy – Whether finding of manifest inadequacy open if similar sentences imposed for comparable offences – Whether appellate court erred in failing to exercise residual discretion.
Criminal law – Sentence – Principles – Relevance of deprived background of Aboriginal offender – Whether appellate court gave appropriate regard to appellant's antecedents and personal circumstances.
Words and phrases – "aggravating factors", "antecedents and personal circumstances", "manifestly inadequate", "mitigating factors", "residual discretion", "social disadvantage".
Criminal Appeals Act 2004 (WA) – ss 24(1), 31, 41(4).