Thompson v The Queen

In *Thompson v The Queen*, the High Court of Australia considered an appeal by the applicant, Thompson, against his conviction for murder. The dispute arose from Thompson's assertion that the trial judge had erred in law by failing to direct the jury adequately on the defence of provocation.

The central legal issue before the High Court was whether the trial judge's summing up to the jury sufficiently explained the concept of provocation as a defence to murder, particularly in relation to the subjective and objective elements required for its establishment. The court had to determine if the jury had been properly instructed on how to assess whether the applicant's actions were a response to a sudden or temporary loss of self-control, and whether a reasonable person might have reacted in a similar way.

Gaudron and Kirby JJ, in their joint judgment, found that the trial judge's directions were inadequate. They explained that the defence of provocation requires the jury to consider both the subjective state of mind of the accused and the objective standard of a reasonable person. The judge's failure to clearly articulate these distinct but interconnected elements meant that the jury may not have fully understood the criteria they needed to apply when evaluating the defence. The court emphasised that a proper direction must ensure the jury understands that the provocation must be such as would cause an ordinary person to lose self-control, and that the act of the accused must be attributable to that loss of control.

The High Court allowed the appeal, quashed the conviction for murder, and ordered a new trial.