"In my opinion this argument overlooks the fundamental importance of the Convention right to an independent and impartial tribunal... As Lord Clarke said in Rimmer v HM Advocate (unreported)23 May 2001 , the question of impartiality, actual or perceived, has to be judged from the very moment when the judge or tribunal becomes first seized of the case. It is a question which, at least in a case of perceived impartiality, stands apart from any question that may be raised about the character, quality or effect of any decisions which he takes or acts which he performs in the proceedings."
"...if circumstances exist which give rise to a suspicion about the judge's impartiality, those circumstances are themselves sufficient to disqualify although in fact no bias exists."
"The principle of common law on which these cases depend is the need to preserve public confidence in the administration of justice... It is no answer for the judge to say that he is in fact impartial, that he abided by his judicial oath and there was a fair trial. The administration of justice must be preserved from any suspicion that a judge lacks independence or that he is not impartial."
"...a real danger of bias might well be thought to arise if in a case where the credibility of any individual were an issue to be decided by the judge he had in a previous case rejected the evidence of that person in such outspoken terms as to throw doubt on his ability to approach such person's evidence with an open mind on any later occasion; or if on any question at issue in the proceedings before him the judge had expressed views, particularly in the course of the hearing, in such extreme and unbalanced terms as to throw doubt on his ability to try the issue with an objective judicial mind... The mere fact that a judge, earlier in the same case or in a previous case, had commented adversely on a party or witness, or found the evidence of a party or witness to be unreliable, would not without more found a sustainable objection. In most cases, we think, the answer, one way or the other, will be obvious. But if in any case there is real ground for doubt, that doubt should be resolved in favour of recusal."