THE HEARINGS AND JUDGMENT BELOW
9 The relevant facts were canvassed in the primary judge's reasons, particularly at [12]-[25], [31]-[53], [56]. It is unnecessary to repeat them.
10 It is also unnecessary to summarise all aspects of the judgment below when we only heard submissions on the procedural fairness ground, and we have granted leave and allowed the appeal only on that ground.
11 In relation to the procedural fairness ground, the primary judge found that all but two of the considerations relevant to deciding the carriage dispute were either neutral or not of significance. His Honour found that the two "most important but conflicting considerations in assessing this multiplicity dispute" (J [101]) were that:
(1) Gilbert + Tobin has greater relevant experience than Maurice Blackburn arising from its successful conduct of what the primary judge characterised as "almost identical claims" under the ACL in a class action against Toyota Motor Corporation Australia Ltd concerning allegedly defective DPF systems in motor vehicles sold to Australian consumers under the "Toyota" brand (Toyota class action), in which his Honour was the trial judge: J [13], [95]; and
(2) the Jennings funding arrangements offers superior returns to group members in all realistic scenarios: J [65]; see also: [32]-[34], [39], [55], [60], [64], [92].
12 In relation to the first matter, the primary judge said that there was "a remarkable similarity" between the claims advanced in the Greentree proceeding and those advanced in the Toyota class action. His Honour held that the Toyota class action was conducted in "a highly efficient and professional manner due to the way in which the factual, legal and evidentiary issues were distilled and presented to the Court" by, relevantly, Gilbert + Tobin. His Honour concluded that the accumulated experience of Gilbert + Tobin would enable the claims of the group members in this proceeding to be advanced efficiently and effectively and consistently with the overarching purpose: J [95]. His Honour considered it "inevitable" that the same legal, factual and evidentiary issues that arose in the Toyota class action will arise in the competing class actions: J [69]. In his Honour's view, having regard to the "highly technical" nature of the alleged defect in the DPF systems, the relative experience of Gilbert + Tobin in advancing ACL claims in respect of those systems in the Toyota class action will allow the Greentree proceeding to be conducted with comparative efficiency and work to offset any advantage that Jaguar would otherwise enjoy by dint of its subject-matter experience: J [70]. His Honour concluded that, notwithstanding the high reputation and experience of Maurice Blackburn, the relative experience of Gilbert + Tobin in conducting near identical claims in the Toyota class action was not a neutral factor, and the firm's relative experience offered real benefits for group members: J [72].
13 In relation to the second matter, the primary judge found that the funding arrangements provided in the Jennings proceeding, which capped legal and funding costs at 25% of any aggregate settlement or judgment, were superior to the funding arrangements provided in the Greentree proceeding. His Honour held that the funding arrangements in the Jennings proceeding offered greater net returns to group members than the Greentree proceeding in all realistic scenarios: J [60], [65].
14 To state the obvious, those considerations were "conflicting" because the first consideration indicated that the carriage dispute should be decided in favour of the Greentree applicants, and the second consideration pointed in favour of granting carriage to the Jennings applicant.
15 Neither party proposed consolidation of the two proceedings but, no doubt in an effort to resolve the dispute in the interests of group members, in the course of the hearing his Honour raised the idea of consolidating the two proceedings but with the Jennings' funding arrangements. In the hearing of the carriage dispute on 28 February 2023 his Honour had the following exchange with Mr Darke SC, senior counsel for Jaguar and then Mr Free SC, senior counsel for the Greentree applicants (T54.36 ff):
His Honour: …but what would be wrong with me - if I reach this view, and I must say, I think this is an unusually difficult multiplicity argument… But what if I the view at the end of the day is, well, look, I don't want to lose the - I don't think it's in the interests of group members to lose all the work that has been done and the experience obtained by Gilbert + Tobin, and that really comes to nought, and all those sunk costs go away, but I see the force in the benefit for group members in the proposal put by Maurice Blackburn. Now, what would be contrary to principle for me making an order that I want the parties - that I will order a consolidation with the litigation committee on the basis of the Maurice Blackburn funding proposal, provided both parties agree within 14 days?
Mr Darke: Well, the difficulty is that no - that Greentree hasn't come along and said that it is prepared to accept or sign up to a funding proposal of that kind.
His Honour: And if it doesn't agree with it in 14 days, then I have to make a - I have to go with one or the other. But if it does agree within 14 days, that I proceed along that basis.
Mr Darke: Well, there would still then need to be a consideration of the other terms of consolidation, the cooperation protocol and the like. I don't know what the parties might come up with in that respect, and I would wish to be heard about it.
His Honour: Well, can I say this. I want to provide you procedural fairness. I also want to conclude before the luncheon adjournment. I will give - if the parties want to respond - the best thing going for Mr Moore [senior counsel for the Jennings applicant] is the funding arrangements. The best thing going for Mr Free is the matter that he has had particular focus on concerning the work that has been done in relation to this matter. If I form the view that I thought [it] was best for group members to get the - what might be the best of both worlds, that is the funding arrangements that have been proposed, but there be a consolidation of the teams, even though they haven't been able to agree. If I were to say that and say, well, they can come back within 14 days with a cooperation agreement on that basis. If they don't - and I would be prepared to hear the parties. If they're not prepared to do that within 14 days, then I will deliver a subsequent judgment awarding carriage to one or other of them. Then if any party wishes to be heard concerning that, then I will [have] them put in. I'm not suggesting I'm going to do that. All I'm saying is that I want to give everyone procedural fairness about that and, if you want to put in a note at the same time, you put the other note in, then I'm happy for that to occur.
Mr Darke: I think the answer to that course really is this, your Honour, that if Gilbert + Tobin are prepared to accept the Maurice Blackburn funding terms, then there's no - again, no need for consolidation because your Honour can give them carriage on those term[s] and preserve the experience and the head start that they bring to the proceeding.
His Honour: Okay. Well ---
Mr Darke: So again, that's not a reason for consolidation.
His Honour: Okay. Thank you, Mr Darke. I understand.
Mr Darke: And then the only other factor that arises is the broader classes proposed by Maurice Blackburn. Now, if your Honour consolidates the proceedings, the consolidated case won't include that broader class definition unless Gilbert + Tobin agrees and, if Gilbert + Tobin does agree, then of course, it can plead that broader class definition without consolidation. So again, that's no reason to consolidate.
His Honour: Yes.
Mr Darke: So this really is a case where, I think, although perhaps it's not easy and there are factors going the other way, your Honour has to choose between the two applicants.
His Honour: Okay. Thank you.
Mr Darke: If your Honour pleases.
His Honour: Now, Mr Free. You don't hold instructions, I take it, to put forward a funding proposal on the lines that has been proposed by Maurice Blackburn.
Mr Free: No, your Honour.
His Honour: And that just is not going to work for you.
Mr Free: I just don't have those instructions…
16 Having declined the opportunity to revise the funding arrangements in the Greentree proceeding so as to meet the Jennings' funding arrangements, Mr Free then went on to submit that the advantages his Honour saw in the Jennings' funding arrangements were not pronounced and involved guesswork.
17 From that point until 12 October 2023, when the primary judge delivered reasons for judgment and made orders the subject of the appeal, the primary judge did not invite the parties to amend or revise their funding proposals and no party sought to do so.
18 In his reasons for judgment, the primary judge held that it was appropriate to provide a period of 28 days for the Greentree applicants, Gilbert + Tobin and Balance to decide whether they were prepared to continue to conduct the Greentree proceeding on a different commercial basis, being the Jennings' funding arrangements. If they were prepared to undertake to do so the Greentree proceeding would go forward and the Jennings proceeding would be stayed. If they were not prepared to provide an undertaking the Jennings proceeding would go forward and the Greentree proceeding would be stayed: J [103].
19 His Honour then said (at J [104]):
It may be that an undertaking will not be provided or be provided in a form which is said to contain deficiencies. Accordingly, I will require the proposed undertaking to be provided to the Court and served on the solicitors for the Jennings proceeding, and I will give leave to any party to relist the matter for the purposes of further argument and, if there is no further argument, for receipt of the undertaking in open Court. If a proposed undertaking is not provided or the form is unacceptable, I do not consider it is consistent with my protective and supervisory role in relation to group members to allow the Greentree proceeding to be the vehicle in which the group members' claims are determined.
20 Orders 2 and 4 are the critical orders made on 12 October 2023. The orders relevantly provided:
2. In the event the applicants in the Greentree proceeding (Greentree applicants), Gilbert + Tobin and Balance Legal Capital II UK Ltd (Balance) provide to the Associate to Justice Lee an undertaking to the Court within 28 days of these Orders that the Greentree applicants, Gilbert + Tobin and Balance will not seek to recover a total amount upon any settlement or judgment representing all legal costs, and other fees and expenses of more than 25 per cent (proposed undertaking) then, upon the receipt and acceptance by the Court of the proposed undertaking as an undertaking to the Court, the Jennings proceeding be permanently stayed.
3. A copy of the proposed undertaking is to be served on the applicants in the Jennings proceeding immediately upon its delivery to the Associate to Justice Lee.
4. In the event the proposed undertaking is not provided in accordance with Order 2 above or is thereafter not accepted by the Court, the Greentree proceeding be declassed pursuant to s 33N of the Federal Court of Australia Act 1976 (Cth) and then be temporally stayed pending mediation of the Jennings proceeding and the Greentree proceeding (with the intention that if the mediation does not result in a s 33V application in the Jennings proceeding, the Greentree proceeding then be the subject of a further stay until the initial trial and determination of common questions in the Jennings proceeding).
5. Liberty to any party in the Greentree proceeding or Jennings proceeding to relist the proceeding immediately upon delivery of any proposed undertaking to the Associate to Justice Lee.
21 On 8 November 2023 the Greentree applicants, Gilbert + Tobin and Balance provided a written undertaking pursuant to Order 2 of the 12 October 2023 orders. At a case management hearing on 15 November 2023 the primary judge accepted that undertaking and varied Order 2 to the effect that the Jennings proceeding be declassed pursuant to s 33N of the Act and temporarily stayed and the Greentree applicants were successful in the carriage motion.