Commonwealth Life Assurance Society Ltd v Brain

The case involved an appeal from the Supreme Court of New South Wales to the High Court of Australia. The plaintiff, Brain, had sued the defendant, Commonwealth Life Assurance Society Ltd., for malicious prosecution and was awarded damages. The defendant appealed this decision.

The legal issues before the court included whether the defendant company could be held liable for malicious prosecution even though the prosecution was formally commenced by the police, whether the jury had been correctly instructed on the concepts of reasonable and probable cause and malice, and whether the damages awarded were excessive. The court also considered the proper role of the jury in determining the prosecutor's belief in the guilt of the accused and whether the prosecution was justified.

The High Court, by majority, affirmed the decision of the Supreme Court. The court held that a defendant could be liable for malicious prosecution if they instigated or procured the proceedings, even if they were not the formal prosecutor. The jury's finding that the defendant company did not genuinely and honestly believe the prosecution was justified was considered incompatible with the existence of reasonable and probable cause. The court found that there was sufficient evidence to support the jury's findings on instigation, lack of belief, and malice, and that the questions submitted to the jury were proper.

The court ordered that the appeal be dismissed, upholding the jury's verdict and the damages awarded. However, one judge dissented on the issue of damages, suggesting a new trial limited to that question due to the admission of evidence that he believed inflamed the jury and raised a false issue.