“The procedural law of England and Wales recognises that, in certain circumstances, proceedings may be commenced, (and an injunction may be granted) against ‘persons unknown’. For this purpose, the law divides ‘persons unknown’ into three categories. The first comprises defendants, such as most hit and run drivers, who are not only anonymous but who cannot even be identified. It is not possible to bring proceedings against such persons as unidentified parties, because it is not possible in principle “to locate or communicate with [them] and to know without further inquiry whether [they are] the same as the person[s] described in the claim form”
“Broadly speaking, the persons whom the claimant seeks to sue I this case as ‘Persons Unknown Category A’ are SC----”
“This, however, is not an application for interim relief but for final judgment. The disclosure order made by Bryan J has produced no useful results. It has not assisted in identifying the persons who perpetrated the fraud on the claimant. In the circumstances, ‘Persons Unknown Category A’ does not describe any identifiable person against whom judgment can properly be given. The persons presently sued as the first defendants in this case fall into the first of the categories of ‘persons unknown’ identified in paragraph 30 above. Like hit and run drivers, they cannot properly be sued to judgment unless and until they can be identified. The fact that they perpetrated the fraud on the claimant is not, of itself, a sufficient identification. As Lord Sumption noted in Cameron v Liverpool Victoria Insurance Co Ltd[2019] UKSC 6 ;[2019] 1 WLR 1471 : “… One does not … identify an unknown person simply by referring to something that he has done in the past … The impossibility of service in such a case is due not just to the fact that the defendant cannot be found but to the fact that it is not known who the defendant is. The problem is conceptual and not just practical …” “… One does not … identify an unknown person simply by referring to something that he has done in the past … The impossibility of service in such a case is due not just to the fact that the defendant cannot be found but to the fact that it is not known who the defendant is. The problem is conceptual and not just practical …”
“I am therefore presently not prepared to give final judgment against the first defendants as ‘Persons Unknown’.”
“… that proceedings should be brought to the notice of person against whom damages are sought (unless, exceptionally, service can be dispensed with), so that he or she has an opportunity to be heard; that service is the means by which that is effected; and that, in circumstances in which service of the amended claim on the substituted defendant would be impossible (even alternative service being tantamount to no service at all), the judge had accordingly been right to refuse permission to amend.”
“……….. As this court explained in Abela v Baadarani[2013] 1 WLR 2043 , para. 37, service has a number of purposes, but the most important is to ensure that the contents of the document served come to the attention of the defendant. Whether they have done so is a question of fact. If the focus is on whether service can in practice be effected, as we think it should be, then it is unnecessary to carry out the preliminary exercise of classifying cases as falling into either the first or the second of Lord Sumption’s categories.”