Michael Wilson & Partners Ltd v Nicholls

The High Court of Australia considered an appeal by Michael Wilson & Partners Ltd (MWP) against orders of the Court of Appeal of the Supreme Court of New South Wales. The dispute originated from allegations by MWP that certain individuals, including Messrs Nicholls and Slater, had conspired to divert clients and business opportunities for their own benefit, causing loss to MWP. MWP pursued claims in both a London arbitration against Mr Emmott and proceedings in the Supreme Court of New South Wales against Messrs Nicholls, Slater, and others. The core of the appeal concerned whether the trial judge, Einstein J, should have been disqualified from hearing the New South Wales proceedings due to an apprehended bias.

The legal issues before the High Court included whether a fair-minded lay observer might reasonably apprehend that the trial judge might not bring an impartial mind to the resolution of the issues, given that the judge had made several orders ex parte in favour of MWP, which affected the respondents without their immediate knowledge or opportunity to be heard. The court also considered whether the respondents could raise the issue of disqualification on appeal from the final judgment, having not sought leave to appeal the pre-trial disqualification applications. Furthermore, the court examined whether the Supreme Court proceedings constituted an abuse of process due to the existence of parallel arbitration proceedings, and whether MWP's liability in equity to prevent double recovery from the respondents where the same loss had been satisfied by an arbitral award against Mr Emmott.

The High Court allowed the appeal, setting aside parts of the Court of Appeal's orders and remitting the matter for further consideration. The Court found that the Court of Appeal had erred in its approach to the apprehended bias issue. Applying the principles from *Ebner v Official Trustee in Bankruptcy*, the High Court emphasised the need to identify the source of the apprehended bias and articulate the logical connection between that source and the feared deviation from impartial decision-making. The Court noted that the trial judge had made orders on the basis of unchallenged affidavit evidence from MWP, which could have caused embarrassment when the judge was later required to make adverse credit findings against MWP at trial. This, coupled with other factors such as the nature of the ex parte orders and the respondents' lack of opportunity to rebut material, supported the conclusion that there was a reasonable apprehension of bias. The High Court also indicated that the issues of abuse of process and double recovery warranted further consideration.