Where Baroness Hale at paragraphs 32-33 held:

‘… But this is a case of fraud. … 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.

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.’