“It has always been said that there must be privity of blood, title or interest: here it would have to be privity of interest. That can arise in many ways, but it seems to me to be essential that the person now to be estopped from defending himself must have had some kind of interest in the previous litigation or its subject-matter. I have found no English case to the contrary.”
“ “Privies” have been described as those who are “privy to [the party] in estate or interest.” (Spencer Bower on Res Judicata, p.130). Before a person can be privy to a party there must be community or privity of interest between them.”
“…it seems to me that the substratum of the doctrine is that a man ought not to be allowed to litigate a second time what has already been decided between himself and the other party to the litigation. This is in the interest both of the successful party and of the public. But I cannot see that this provides any basis for a successful defendant to say that the successful defence is a bar to the plaintiff suing some third party, or for that third party to say that the successful defence prevents the plaintiff from suing him, unless there is a sufficient degree of identity between the successful defendant and the third party. I do not say that one must be the alter ego of the other: but it does seem to me that, having due regard to the subject matter of the dispute, there must be a sufficient degree of identification between the two to make it just to hold that the decision to which one was party should be binding in proceedings to which the other is party. It is in that sense that I would regard the phrase “privity of interest.”
“… it appears that for privity with a party to the proceedings to take effect, it must take effect whether that party wins or loses. As was said by Buckley J in Zeiss No. 3[1970] Ch. 506 , 541 (where the question was rather different) “The relationship cannot be conditional upon the character of the decision.””
“This all goes to illustrate that the question whether one person is privy on another is highly fact-dependent. The fact that a particular relationship (e.g. solicitor/client or director/company) exists in one case, where the circumstances are such that there is no privity, does not mean that, judged against the facts of another case, that same relationship might not be a very important factor in establishing that there is privity.”
“The doctrine of privity for these purposes is somewhat narrow.”
“The Companies Court of the Chancery Division of the High Court has found, after a full trial, Mr Manson guilty of the five wrongful acts specified above. To allow relitigation of those before the self-same court would seem absurd to Joe Citizen who through his taxes pays for the courts and whose own access to justice is impeded by court congestion. Doing a case twice over would make no sense to him: all the more so if he was told that the costs of this would in all likelihood be borne by innocent creditors of the company which Mr Manson ran.”
“The court therefore has to consider, by an intense focus on the facts of the particular case, whether in broad terms the proceedings that it is sought to strike out can be characterised as falling under one or other, or both, of the broad rubrics of unfairness or the bringing of the administration of justice into disrepute.”