The doctrine of judicial recusal enables - and may require - a judge who is lawfully appointed to hear and determine a case to stand down from that case, leaving its disposition to another colleague. The subject is one of considerable importance, not only to 'insiders' in the judiciary, but also to litigants and their lawyers. Understanding the principles which guide recusal is also to understand the fundamentals of judging in the common law tradition. The subject is therefore of considerable interest both at practical and theoretical levels, for it tells us most of what we need to know about...