"102. . . . The Court of Appeal took the opportunity in In re Medicaments and Related Classes of Goods (No. 2) [2001] 1 WLR 700 to reconsider the whole question. Lord Phillips of Worth Matravers MR, giving the judgment of the court, observed, at p 711A-B, that the precise test to be applied when determining whether a decision should be set aside on account of bias had given rise to difficulty, reflected in judicial decisions that had appeared in conflict, and that the attempt to resolve that conflict in R v Gough had not commanded universal approval. At p 711B-C he said that, as the alternative test had been thought to be more closely in line with Strasbourg jurisprudence which since 2 October 2000 the English courts were required to take into account, the occasion should now be taken to review R v Gough to see whether the test it lays down is, indeed, in conflict with Strasbourg jurisprudence. Having conducted that review he summarised the court's conclusions, at pp 726-727:
'85. When the Strasbourg jurisprudence is taken into account, we believe that a modest adjustment of the test in R v Gough is called for, which makes it plain that it is, in effect, no different from the test applied in most of the Commonwealth and in Scotland. The court must first ascertain all the circumstances which have a bearing on the suggestion that the judge was biased. It must then ask whether those circumstances would lead a fair-minded and informed observer to conclude that there was a real possibility, or a real danger, the two being the same, that the tribunal was biased.'
103. I respectfully suggest that your Lordships should now approve the modest adjustment of the test in R v Gough set out in that paragraph. It expresses in clear and simple language a test which is in harmony with the objective test which the Strasbourg court applies when it is considering whether the circumstances give rise to a reasonable apprehension of bias. It removes any possible conflict with the test which is now applied in most Commonwealth countries and in Scotland. I would however delete from it the reference to "a real danger". Those words no longer serve a useful purpose here, and they are not used in the jurisprudence of the Strasbourg court. The question is whether the fair-minded and informed observer, having considered the facts, would conclude that there was a real possibility that the tribunal was biased."
The House unanimously endorsed this proposal. In the result there is now no difference between the common law test of bias and the requirements under Article 6 of the Convention of an independent and impartial tribunal, the latter being the operative requirement in the present context. The small but important shift approved in Magill v Porter has at its core the need for "the confidence which must be inspired by the courts in a democratic society": Belilos v Switzerland (1988) 10 EHRR 466, at para 67; Wettstein v Switzerland (Application No. 33958/96) para. 44; In Re Medicaments, at para 83. Public perception of the possibility of unconscious bias is the key. It is unnecessary to delve into the characteristics to be attributed to the fair-minded and informed observer. What can confidently be said is that one is entitled to conclude that such an observer will adopt a balanced approach. This idea was succinctly expressed in Johnson v Johnson (2000) 200 CLR 488, 509, at para 53, by Kirby J when he stated that "a reasonable member of the public is neither complacent nor unduly sensitive or suspicious".