"Any exception [to the double jeopardy rule] must, however, be limited to those types of cases where the damage to the credibility of the criminal justice system by an apparently illegitimate acquittal is manifest, and so serious that it overrides the values implicit in the rule against double jeopardy."
"We believe that this guidance is entirely appropriate, and consistent with the relevant legislative framework, and reflects a proper appreciation of the continuing (but not absolute) importance of finality in the criminal justice process. We add, however, that the view of the Director that it is in the public interest for the application to proceed, while a pre-requisite to the application, is not conclusive of it (R v Miell[2008] 1 WLR 627 ). The court must form its own view whether the statutory requirements are met, independently of him."