"I would be required to tell the jury not to speculate about evidence they have not heard, which logically would require them to disregard the possibility that had the swabs been examined, they may well have been supportive of the defendant’s case both as to consent and as to his belief as to her consent. I ask rhetorically, can that ever be fair?" 10. "
"Two well-known principles are frequently invoked in this context when a court is invited to stay proceedings for abuse of process: (i) The ultimate objective of this discretionary power is to ensure that there should be a fair trial according to law, which involves fairness both to the defendant and the prosecution, because the fairness of a trial is not all one sided; it requires that those who are undoubtedly guilty should be convicted as well as that those about whose guilt there is any reasonable doubt should be acquitted. (ii) The trial process itself is equipped to deal with the bulk of the complaints on which applications for a stay are founded."
"But in considering such powers to alleviate prejudice, Brooke LJ (at para 27) emphasised the need for sufficiently credible evidence, apart from the missing evidence, leaving the defence to exploit the gaps left by the missing evidence. The rationale for refusing a stay is the existence of credible evidence, itself untainted by what has gone missing."
"In considering the question of prejudice to the defence, it seems to us that it is necessary to distinguish between mere speculation about what missing documents or witnesses might show, and missing evidence which represents a significant and demonstrable chance of amounting to decisive or strongly supportive evidence emerging on a specific issue in the case. The court will need to consider what evidence directly relevant to the appellant's case has been lost by reason of the passage of time. The court will then need to go on to consider the importance of the missing evidence in the context of the case as a whole and the issues before the jury. Having considered those matters, the court will have to identify what prejudice, if any, has been caused to the appellant by the delay and whether judicial directions would be sufficient to compensate for such prejudice as may have been caused or whether in truth a fair trial could not properly be afforded to a defendant."
"It is important to have in mind the wide variations in the evidence relied on in support of prosecutions: no two trials are the same, and the type, quantity and quality of the evidence differs greatly between cases. Fairness does not require a minimum number of witnesses to be called. Nor is it necessary for documentary, expert or forensic evidence to be available, against which the credibility and reliability of the prosecution witnesses can be evaluated. Some cases involve consideration of a vast amount of documentation or expert/forensic evidence whilst in others the jury is essentially asked to decide between the oral testimony of two or more witnesses, often simply the complainant and the accused. Furthermore, there is no rule that if material has become unavailable, that of itself means the trial is unfair because, for instance, a relevant avenue of enquiry can no longer be explored with the benefit of the missing documents or records. It follows that there is no presumption that extraneous material must be available to enable the defendant to test the reliability of the oral testimony of one or more of the prosecution's witnesses. In some instances, this opportunity exists; in others it does not. It is to be regretted if relevant records become unavailable, but when this happens the effect may be to put the defendant closer to the position of many accused, whose trial turns on a decision by the jury as to whether they are sure of the oral evidence of the prosecution witness or witnesses, absent other substantive information by which their testimony can be tested."
"The judge's directions to the jury should include the need for them to be aware that the lost material, as identified, may have put the defendant at a serious disadvantage, in that documents and other materials he would have wished to deploy had been destroyed. Critically, the jury should be directed to take this prejudice to the defendant into account when considering whether the prosecution had been able to prove, so that they are sure, that he or she is guilty. …"