What is the law society’s argument that failure to raise the allegation in a timely fashion bars a subsequent complaint of reasonable apprehension of bias?

The Law Society’s point that failure to raise the allegation in a timely fashion bars a subsequent complaint of reasonable apprehension of bias is supported by the decision Steadman-Byrne v. Amjad, [2007] EWCA Civ 265, [2007] 1 WLR 2484 at paragraph 17; “Appellate and reviewing courts tend not to look favourably on complaints of vitiating bias made only after the complainant has taken his chance on the outcome and found it unwelcome”.