Roberts v The State of Western Australia

Roberts, the applicant, sought special leave to appeal to the High Court of Australia against a decision of the Supreme Court of Western Australia. The dispute concerned the applicant's conviction for the offence of murder. The applicant had been found guilty by a jury and sentenced to imprisonment for life.

The primary legal issue before the High Court was whether the trial judge had erred in law by failing to direct the jury adequately on the defence of provocation. Specifically, the applicant argued that the jury should have been instructed that provocation could arise from a series of acts or words, rather than a single event, and that the cumulative effect of the deceased's conduct should have been considered.

The High Court considered the principles governing the defence of provocation under Western Australian law, which requires that the provocation be such as would cause an ordinary person to lose self-control. Their Honours noted that while provocation can indeed arise from a series of acts, the critical question is whether the cumulative effect of those acts, viewed objectively, was sufficient to constitute provocation in law. The Court found that the trial judge's directions, when read as a whole, adequately conveyed this principle to the jury, and that there was no misdirection on the law of provocation.

Special leave to appeal was refused.