"1. A Court of Criminal Appeal has a power and a duty to intervene in the case of a miscarriage of justice, but what amounts to a miscarriage of justice is something that has to be considered in the light of the way in which the system of criminal justice operates.
2. As a general rule an accused person is bound by the way the trial is conducted by counsel, regardless of whether that was in accordance with the wishes of the client, and it is not a ground for setting aside a conviction that decisions made by counsel were made without, or contrary to, instructions, or involve errors of judgment or even negligence.
3. However, there may arise cases where something has occurred in the running of a trial, perhaps as the result of 'flagrant incompetence' of counsel, or perhaps from some other cause, which will be recognised as involving, or causing, a miscarriage of justice. It is impossible, and undesirable, to attempt to define such cases with precision. When they arise they will attract appellate intervention."