“A decision that permission should be granted to serve the protagonist out of the jurisdiction because the minor player is domiciled within the jurisdiction would indeed allow the tail to wag the dog. But if the anchor defendant is the protagonist a decision to allow a minor player to be served outside the jurisdiction may be entirely appropriate. That would be, to continue the metaphor, to allow the dog to wag the tail. Just as it may make little sense to have the venue determined by where the claim against the most insignificant player will be heard, so it may make little sense to have the venue where the most significant will be sued passed over in favour of another jurisdiction to whose jurisdiction a lesser player is subject. I do not mean thereby to suggest that whether or not jurisdiction should be exercised against a foreign defendant is necessarily determined by whether the anchor defendant, or the defendant sought to be joined, fits into some particular descriptive category ("major/minor"; "principal/secondary"); only that a decision as to appropriate forum must necessarily take account of the relative importance in the case of different defendants and particularly those against whom proceedings in England are practically bound to continue.”