“[57] Requiring a party to “prove” a document means that the party relying upon the document must lead apparently credible evidence of sufficient weight that the document is what it purports to be… [58] The question is therefore whether any evidence as to the provenance of the document has been produced, and if it has then whether (although not countered by any evidence to the contrary) such evidence is on its face so unsatisfactory as to be incapable of belief…”
“…It is vital that the process of challenge is fair. Criticism of the evidence about the authenticity of the document cannot amount to a covert and unpleaded case of forgery. If a case of forgery is to be put then the challenge should be set out fairly and squarely on the pleadings (and appropriate directions can be given). If the charge is that a witness has forged a document (or has been party to the forgery of a document) and the grounds of challenge have not been set out in advance, then if the questions are not objected to the response of the witness to the charge must be assessed taking into account the element of ambush and surprise.”
“…If a party challenging the authenticity of a document wishes to make a positive case as to how the document came to be created, including any allegation that it has been forged, then if it is not appropriate to plead out the allegation, it seems to me to be incumbent on that party to set out the allegation clearly in correspondence, either at the time of serving the notice to prove or at least in sufficiently good time to ensure that the challenged party has a fair opportunity to deal with it.”
“[31] Statements of case are, of course, crucial to the identification of the issues between the parties and what falls to be decided by the court. However, the mere fact that the opposing party has not alleged dishonesty in his pleadings will not necessarily bar a judge from finding a witness to have been lying: in fact, judges must regularly characterise witnesses as having been deliberately untruthful even where there has been no plea of fraud. On top of that, it seems to me that where an insurer in a case such as the present one, following the guidance given in Kearsley v Klarfeld[2006] 2 All ER 303 In Kearsley Brooke LJ, giving the judgment of the court, explained that, in a road traffic case, the defendant “does not have to put forward a substantive case of fraud in order to succeed” and that it suffices if they “set out fully the facts from which they would be inviting the judge to draw the inference that the plaintiff had not in fact suffered the injuries he asserted”
"The question whether an adverse inference may be drawn from the absence of a witness is sometimes treated as a matter governed by legal criteria, for which the decision of the Court of Appeal in Wisniewski v Central Manchester Health Authority [1998] PIQR P324 is often cited as authority. Without intending to disparage the sensible statements made in that case, I think there is a risk of making overly legal and technical what really is or ought to be just a matter of ordinary rationality. So far as possible, tribunals should be free to draw, or to decline to draw, inferences from the facts of the case before them using their common sense without the need to consult law books when doing so. Whether any positive significance should be attached to the fact that a person has not given evidence depends entirely on the context and particular circumstances. Relevant considerations will naturally include such matters as whether the witness was available to give evidence, what relevant evidence it is reasonable to expect that the witness would have been able to give, what other relevant evidence there was bearing on the point(s) on which the witness could potentially have given relevant evidence, and the significance of those points in the context of the case as a whole. All these matters are inter-related and how these and any other relevant considerations should be assessed cannot be encapsulated in a set of legal rules."
“Where it is said that an adverse inference ought to have been drawn from a particular matter—here the absence of evidence from the decision-makers—the first step must be to identify the precise inference(s) which allegedly should have been drawn ….”
“The effect of drawing the inference is to strengthen the evidence adduced by the party seeking the inference or weaken the evidence adduced by the party resisting it”