The document discusses the principles of natural justice and procedural fairness that are part of the rule of law. It outlines several rights that make up the concept of natural justice, including the right of the accused to know what they have been accused of, the right to present evidence and have a hearing, and the right to an unbiased court. It also discusses the importance of cross-examination and avoiding bias. The document presents the case of R v Sussex Justices, Ex parte McCarthy, in which a conviction was overturned even though the judges claimed they were not influenced by the clerk who had a conflict of interest, because justice must not only be done but be seen to be done.