Fresh Evidence in UK Law

The Court of Appeal can make its assessment of the fresh evidence it has heard, but save in a clear case it is at a disadvantage in seeking to relate that evidence to the rest of the evidence which the jury heard. For these reasons it will usually be wise for the Court of Appeal, in a case of any difficulty, to test their own provisional view by asking whether the evidence, if given at the trial, might reasonably have affected the decision of the trial jury to convict.

In order to justify the reception of fresh evidence or a new trial, three conditions mast be fulfilled: first, it must be shown that the evidence could not have been obtained with reasonable diligence for use at the trial: second, the evidence most be such that, if given, it would probably have an important influence on the result of the case, though it need not be decisive: thirdly, the evidence must be such as is presumably to be believed, or in other words, it must be apparently credible, though it need not be incontrovertible.

But it is submitted for the bank that the language of section 9(2)( d) must be construed as qualified by the common law rule that the unsuccessful party who has been sued to judgment is not permitted to challenge that judgment on the ground that it was obtained by fraud unless he is able to prove that fraud by fresh evidence which was not available to him and could not have been discovered with reasonable diligence before the judgment was delivered.

While as I have said the Court of Appeal and this House may find it a convenient approach to consider what a jury might have done if they had heard the fresh evidence, the ultimate responsibility rests with them and them alone for deciding the question.

First, there must have been a mistake as to an existing fact, including a mistake as to the availability of evidence on a particular matter. Secondly, the fact or evidence must have been "established", in the sense that it was uncontentious and objectively verifiable. Fourthly, the mistake must have played a material (not necessarily decisive) part in the Tribunal's reasoning.

I think the question whether or not the fresh evidence is to be admitted has to be decided by an exercise of discretion. The question is largely a matter of degree, and there is no precise formula which gives a ready answer.

If the evidence is both credible and fresh, it should generally be admitted unless the court is satisfied at that stage that, if admitted, it would have no effect on the safety of the conviction. If the evidence is credible but not fresh, the court should assess its strength and its potential impact on the safety of the conviction. If it considers that there is a risk of a miscarriage of justice if the evidence is excluded, it should be admitted, notwithstanding that the evidence is not fresh.