The powers of the courts in their several criminal jurisdictions are wider and more effective than the powers to make the declaration of, and to make ancillary orders to enforce, a right, if it exists, in the way sought in proceedings such as the present. In particular, the powers and discretions of the judge who presides at a criminal trial...are more ample. Thus the judge who exercises criminal jurisdiction, prior to or at the trial, has the overriding duty to ensure that the accused has a fair trial...the judge has some overriding powers which impose on him a discretion, and indeed a duty, to do that which is fair to the accused. To ensure that the trial is fair to the accused, it is necessary that he be given a fair and reasonable opportunity to consult with, and instruct, his legal advisers, and to obtain their legal advice in relation to the charges against him. It is to be expected that, when an accused is confined prior to the trial, the authorities responsible for his custody will accord him this opportunity without the need for intervention by the judge or magistrate. If, however, they fail to do so, or if the accused or his legal advisers consider they have so failed, there are ample opportunities for them to seek the intervention of the criminal courts in exercise of the various powers of those courts. If the Court intervenes and gives a direction as to what is to occur prior to the trial, there are ample sanctions, if those charged with the custody were minded to disregard or neglect to obey the directions.