Update 17 01 2023 my article on Articles 33-34 has now been published: Lis Pendens and third states: the origin, DNA and early case-law on Articles 33 and 34 of the Brussels Ia Regulation and its “forum non conveniens-light” rules, The link in the title should give free access to the first 50 takers, and I assume link to the review for those that come after.
In WWRT Ltd v Tyshchenko & Anor  EWHC 939 (Ch) and following an earlier Worldwide Freezing Order, Bacon J engages with Article 34 Brussels Ia’s forum non conveniens ‘light’ regime.
The proceedings are brought by WWRT ltd against Mr Serhiy Tyshchenko and his ex-wife, Mrs Olena Tyshchenko. The claim is founded on an allegation that the Defendants carried out an extensive fraud on the Ukrainian bank, JSC Fortuna Bank during which time the bank was (it is claimed) ultimately owned by Mr Tyshchenko. The bank was subsequently declared insolvent and was liquidated, in the course of which a package of its assets, including the disputed loans, was sold to Ukrainian company Star Investment One LLC. Star in turn sold those rights and assets to WWRT in March 2020. WWRT’s case is that following those two assignments it has now acquired the rights to bring the claim relied upon in the present proceedings, which is one in tort under Article 1166 of the Ukrainian Civil Code.
In current proceedings, defendants contest jurisdiction, on the basis of 3 alternative grounds:
Firstly, the principle of ‘modified universalism’ (which I have discussed ia here) which should ground a stay under common law so as to prevent WWRT from bypassing the Ukrainian insolvency proceedings. The suggestion is that CJEU Owusu did not deal with a potential stay to allow the judge in one EU Member State to stay proceedings so as to support insolvency proceedings in another Member State. Bacon J held , in my view justifiably, that even if indeed the CJEU in Owusu did not specifically deal with this issue, its reasoning (particularly the insistence on predictability and legal certainty) extends to the current scenario. Insolvency proceedings may well (and indeed clearly) fall outside BIa’s scope, however the claim at issue is one in tort, which falls squarely within it. At 62 ff he discusses obiter that even if such stay would have been theoretically possible, he would not have exercised his discretion to grant it.
Secondly, at 89 ff, a stay by analogy with A34 BIa. It is seemingly common ground between the parties and the judge that the bankruptcy exclusion in A1 BIa precludes the express application of A34 if the pending action in the third State is in the nature of bankruptcy or insolvency proceedings. Support is found in Baker J’s views in BB Energy. This is not a settled issue. Neither is much discussion, pro or contra, of the in my view unjustifiable finding of reflexive application of A28 Lugano in JSC Commercial Bank v Kolomoisky  EWCA Civ 1708. The more sound rejection of an A34 stay in the case at issue in my view lies in the judge’s obiter finding at 95 that the proceedings in E&W are not ‘related’ to those in the Ukraine.
Thirdly, a more straightforward argument of lack of domicile of one of the defendants in the UK, hence room for a forum non conveniens stay. This argument was in fact dealt with first, at 38 ff, with Bacon J holding on the basis of a pattern of settled residence that domicile was in fact established. At 98 ff he holds obiter that even if A4 hence BIa had not been engaged, he would not have allowed a stay on forum non grounds.
In conclusion, the freezing orders were continued.
EU Private International Law, 3rd ed 2021, para 2.539 ff