"He who alleges must prove" and "
"I would end with an emphatic word of warning. It is not every failure of frank and full disclosure which would justify a court in setting aside an order of the kind concerned in this appeal. On the contrary, it will only be in cases when the absence of full and frank disclosure has led to the court making, either in contested proceedings or by consent, an order which is substantially different from the order which it would have made if such disclosure had taken place that a case for setting aside can possibly be made good. Parties who apply to set aside orders on the ground of failure to disclose some relatively minor matter or matters, the disclosure of which would not have made any substantial difference to the order which the court would have made or approved, are likely to find their applications being summarily dismissed, with costs against them, or, if they are legally aided, against the legal aid fund."
"The principles are, briefly: first, there has to be a 'conscious and deliberate dishonesty' in relation to the relevant evidence given, or action taken, statement made or matter concealed, which is relevant to the judgment now sought to be impugned. Secondly, the relevant evidence, action, statement or concealment (performed with conscious and deliberate dishonesty) must be 'material'. 'Material' means that the fresh evidence that is adduced after the first judgment has been given is such that it demonstrates that the previous relevant evidence, action, statement or concealment was an operative cause of the court's decision to give judgment in the way it did. Put another way, it must be shown that the fresh evidence would have entirely changed the way in which the first court approached and came to its decision. Thus the relevant conscious and deliberate dishonesty must be causative of the impugned judgment being obtained in the terms it was. Thirdly, the question of materiality of the fresh evidence is to be assessed by reference to its impact on the evidence supporting the original decision, not by reference to its impact on what decision might be made if the claim were to be retried on honest evidence."
" 32. … But this is a case of fraud. It would be extraordinary if the victim of a fraudulent misrepresentation, which had led her to compromise her claim to financial remedies in a matrimonial case, were in a worse position than the victim of a fraudulent misrepresentation in an ordinary contract case, including a contract to settle a civil claim. As was held in Smith v Kay (1859) 7 HL Cas 750, a party who has practised deception with a view to a particular end, which has been attained by it, cannot be allowed to deny its materiality. Furthermore, the court is in no position to protect the victim from the deception, or to conduct its statutory duties properly, because the court too has been deceived. In my view, Briggs LJ was correct in the first of the three reasons he gave for setting aside the order. 33. The only exception is where the court is satisfied that, at the time when it made the consent order, the fraud would not have influenced a reasonable person to agree to it, nor, had it known then what it knows now, would the court have made a significantly different order, whether or not the parties had agreed to it. But in my view, the burden of satisfying the court of that must lie with the perpetrator of the fraud. It was wrong in this case to place on the victim the burden of showing that it would have made a difference."
"When a party has practised a deception with a view to a particular end, which has been attained by it, he cannot be allowed to deny its materiality."
"The issue is, not whether the Plaintiff has shown that he would not have executed the securities but for the representation of Smith, but whether Smith has satisfied, or can satisfy us, that the Plaintiff would have executed them without. The onus probandi is on Smith in this case, for the reason which I now proceed to state. "
"But can it be permitted to a party who has practised a deception, with a view to a particular end, which has been attained by it, to speculate upon what might have been the result if there had been a full communication of the truth?"
"Therefore I think the deeds must clearly be set aside upon the ground of fraud, provided only one thing is shown, namely that that fraud was the cause of the contract. Now, I take it to be perfectly clear that, in order to set aside a deed on the ground of fraud, there must be moral fraud, and fraud causing the contract, dolus dans causam contractui ; not necessarily a fraud which is the sole cause of the contract, but a fraud without which the contract never would have been made. This principle has been often laid down, and is, I apprehend, indisputable; and it is admitted in the great case of Small v. Attwood (6 Clark and Fin. 232), in different forms of expressions, by most of the noble and learned lords who were concerned in giving judgment in that case. Fraud gives a cause of action if it leads to any sort of damage; it avoids contracts only where it is the [776] ground of the contract, and where, unless it had been employed, the contract would never have been made."
"It is, of course, known to all concerned with such matters that, by section 5 of the Matrimonial Causes Act, 1965, a duty is placed upon the court to inquire, particularly where the ground of a petition is cruelty, whether the petitioner has condoned, and the court is directed that, if it be not satisfied with respect to that matter, it should dismiss the petition, albeit finding the cruelty complained of established. Now, that I do not, myself, regard as in any proper sense of the term raising a "presumption."
"Did the respondent in the period leading up to the making of the order, practise a deception on the applicant with the intention of gaining a personal or financial advantage for herself?"
"Would a reasonable person have nonetheless agreed to this if he had known about the matters concealed?"
"Would the court have made a substantially different final order had it known about the matters concealed?"
"If epigrammatic phrases are preferred, the judge is not a rubber stamp. He is entitled but is not obliged to play the detective. He is a watchdog, but he is not a bloodhound or a ferret."