22As it seems to me, it is important to preserve the flexibility to order additional categories of discovery, and not too rigidly to confine it. This is because discovery is a very important element of the court's armoury to elicit the truth, and the requirement of the rules that it be limited to specified classes is a restriction on the previous entitlement of a party to general discovery. The court should therefore be disposed to order additional discovery where, after the original order has been made, it is established that discovery of an additional class or classes of documents is necessary in the interests of a fair trial. Relevant discretionary considerations are, without being exclusive, likely to include whether new issues have emerged since the original order, and if so by which party they have been raised (it being more likely that discovery would be ordered in respect of new issues against a party who raises them, than at the request of a party who could have raised them earlier); whether documents produced under the original order point to a need for additional discovery, the stage and state of the proceedings, the extent and burden of the additional discovery, the importance of the issue in the case, and the forensic course of the proceedings (for example, where a deliberate decision had been made to limit the scope of the discovery sought at an earlier stage, the court would not likely permit that to be revisited in the absence of some material change of circumstances).
23The first four proposed additional categories are said to relate to the weight to be afforded to the wishes of the second and third defendants. In respect of the first two, it is said that documents which reveal financial dependence on the part of those defendants on the first defendant, or the expectation of financial benefits from her, may tend to show that their position in the case is the result of influence or pressure by the first defendant, which would detract from the weight to which they were entitled. The third and fourth categories are said potentially also to show that the managing trustee proposal is, in reality, the proposal of the first defendant, in respect of which the second defendant is said to have "ceded the issue" to the first defendant, and the third defendant to be bound, or pressured, to acquiesce.
24In the 3 December judgment, I reasoned - without reference to authority - that as the wishes of the beneficiaries were relevant to the selection of a replacement trustee, then so long as the second and third defendants sought to have their wishes taken into account, matters which bore on the weight to be afforded those wishes were relevant; accordingly, the discovery sought by the plaintiffs of agreements that include terms prohibiting or restricting the second or third defendant from propounding or supporting a replacement trustee without the approval of the first defendant should be ordered. (Subsequently, the plaintiffs sought and obtained the wider "wishes" order referred to above, reliant on that reasoning).
25It is appropriate now to review what will be the issues on the hearing, and the relevance of the beneficiaries' wishes and factors that may affect their weight.
26In Re Tempest (1866) LR 1 Ch App 485, Turner LJ said that the three considerations that should move the court in appointing new trustees were (1) the wishes of the persons by whom the trust was created, if expressed or implicit in the trust instrument; (2) that a trustee should not be appointed with a view to the interests of some of the beneficiaries in opposition either to the wishes of the settlor or the interests of the other beneficiaries; and (3) that in appointing a trustee regard should be had to whether the appointment would promote or impeded the execution of the trust. The Re Tempest considerations were endorsed by Rolfe J as "general guidelines" in Global Funds Management (NSW) Ltd v Burns Philp trustee Co Ltd (in prov liq) (1990) 3 ACSR 183. In Walters v Ryan [1933] NZLR 821, Reed J said that the dominant consideration was the interests of the beneficiary, which called for consideration of two matters: first, security; and secondly, facilities for administration.
27As to the second consideration, pertaining to avoiding conflict of interest, while the court prefers not to appoint a beneficiary (or relative) [Ex parte Conybeare's Settlement (1853) 1 WR 458; Johnstone v Johnstone (1902) 2 SR(NSW) Eq 90; Re Cunningham's Settled Estates (1909) 27 WN(NSW) 28; Re Roberts (1983) 70 FLR 158; Saul v Lin (No 2) (2004) 60 NSWLR 275; [2004] NSWSC 332, [9]], this yields to necessity in exceptional circumstances [Waddell v Patterson (1865) 2 WW & A'B Eq 36; Re Ferrett's Trusts (1894) 6 QLJ 183; Re Simmonds [1954] QWN 3; Re Neeve [1956] QWN 21; Re Paroz [1956] QWN 37]. If it were concluded in this case that appointing a trustee who is not a lineal descendant involved unacceptable risk to the trust assets, this may be such an exceptional case.
28As to the third consideration (whether the appointment will promote or impeded the execution of the trust), Ford & Lee suggest (at [8290] that "it would appear that ... the court may wish to ascertain the acceptability of the proposed trustee to the beneficiaries of the trust; for it may well be that their relationship will bear upon the efficiency with which the trust can be carried out". In Wallace v Wallace (No 2) (1899) 24 VLR 893, Hood J said (at 895) that "the court ought not appoint a trustee - there being no reason for it - who is obnoxious to the whole of the cestuis que trustent".
29While the precise grounds on which each proposal is opposed have not yet been notified, as presently appears the main issues will be (1) the respective risk each proposal poses to the trust assets (the plaintiffs contending that the defendants' proposal involves significant risk of jeopardy to the trust assets through triggering a right of pre-emption); and (2) the respective suitability of each proposed trustee (which includes questions of competence, experience, independence and impartiality). Subsidiary considerations may include the respective costs of the appointment, and - as the authorities to which I have referred confirm - the attitudes of the beneficiaries to the appointee. But as things presently appear, the court would not likely appoint the second plaintiff, a beneficiary, if it could safely appoint an independent trustee. On the other hand, it would not likely accede to the defendants' proposal, if it involved an unacceptable risk of triggering the pre-emption provisions. In that context, the wishes of the beneficiaries, divided as they are, are unlikely to be of much significance. That particularly applies to the reasons why the second and third defendants are opposed to the second plaintiff's appointment, as the desirability of an impartial and independent trustee is such - particularly in the circumstances of the conflict that besets these parties - that the second plaintiff will really be a viable candidate only if the defendants' proposal fails on account of the risk associated with appointing a non-lineal descendant, or concerns at the independence of the proposed managing trustee. That does not leave much room for the wishes of the beneficiaries to play a significant role.
30Moreover, it now emerges that, time for service of affidavit evidence having expired, neither the second nor the third defendant proposes to give evidence. Thus there will be no sworn evidence of their wishes, but only the submissions of their counsel. In circumstances where their wishes are not supported by sworn evidence and their rationale cannot be tested, they could have little if any weight beyond the merits of the arguments that their counsel may advance.
31Theoretically, if their wishes are relevant, matters affecting the weight to be attributed to them must also be relevant. The relevance of wishes appears from the authorities to which I have referred to be essentially that the administration of the trust will not be facilitated by appointing a trustee who is "obnoxious" to the beneficiaries. A beneficiary's wishes will typically be founded in self-interest. In this case, the wishes of the second and third defendants may be founded in or influenced by affection for their mother, financial dependence on her, expectation of inheritance, antipathy to the plaintiffs, and many other matters. But so long as the wishes expressed are their wishes, their motives are of marginal if any relevance. Mr Hutley SC encapsulated the point, submitting that while the wishes discovery order was appropriate because it was directed to whether the wishes were freely expressed, which was a legitimate area of inquiry, the motives that informed freely expressed wishes were not.
32Given the evolution of the wishes order from that originally proposed by the plaintiffs on 3 December 2013, I do not accept that the plaintiffs reasonably expected that it would catch documents of the type described in proposed categories 1 and 2. It was only ever intended to capture agreements containing terms of the relevant effect. As financial dependence or expectation is but one of many matters that may influence the second and third plaintiffs' attitude, discovery on that issue alone would be of questionable utility.
33Whereas the second plaintiff is a candidate for appointment as trustee, so that her fitness is necessarily an issue, the second and third defendants are not. Their independence and impartiality are not relevant issues. The independence and impartiality of the proposed professional managing trustee is an issue, but what matters is the independence and impartiality of the proposed trustee - not which of the defendants proposes or supports its appointment. Thus it matters not merely that the proposed trustee might be sourced, enlisted and supported by the first defendant - so long as it is independent of her. Nor does it matter much that the second and third defendants might support the proposal because they are beholden to their mother, if that be the case. That is not to say that communications between the first defendant and a proposed trustee are not relevant - they are, because they are likely to cast light on the question of the proposed trustee's independence and impartiality, and the managing trustee discovery order was addressed precisely to that issue, by requiring discovery of communications between any of the defendants on the one hand and any proposed trustee on the other.
34Moreover, there is already significant material available to the plaintiffs to deploy in support of any submission that the wishes of the second and third defendants are either not freely expressed or are influenced by matters extraneous to the best interests of the trust. In respect of the third defendant, the documents already discovered provide a firm basis for a submission that she is not at liberty to act contrary to the wishes of the first and fourth defendants, and that should she do so, she is liable to suffer a loan of $45 million to be called up. There is also substantial material to found a submission that the second defendant is financially dependent on the first defendant, and that her legal costs are being paid by the first and/or fourth defendants. I do not think that the absence of discovery on these issues will unduly constrain the plaintiffs in presenting a case that the second and third defendants are beholden to, and under the influence of, the first defendant.
35The plaintiffs submitted that an issue had emerged since 3 December 2013, because under the amended corporate trustee proposal, as revised on 3 February 2014, the director of the proposed custodian trustee could be removed and replaced only by the unanimous agreement of the shareholders, who would be the four beneficiaries, and this it was said would be unworkable if the second and thirds defendants were precluded from agreeing freely because they were beholden to the first defendant. The short answer to this is that it does not need discovery on that issue to demonstrate, as the plaintiffs seek to establish, that there is a high prospect of conflict between the beneficiaries. In my view, establishing the extent of financial benefits received or expected by the second and third defendants would not significantly affect the resolution of this issue.
36Proposed categories 3 and 4 closely reflect a category of documents originally sought by the plaintiffs in their motion of 27 November 2013, as follows:
All documents disclosing or recording any communication between or among the Second defendant (or any person on her behalf) and or the First defendant (or any person on her behalf) and or the Fourth and or Fifth defendants (or any person on their behalf) in relation to any proposal concerning the appointment of a replacement trustee of the Trust.
37After argument on that day, that category was abandoned in their amended motion of 3 December 2013, upon which the orders for discovery of that date were made. The amended motion was deliberately framed, in the light of objections that had been taken, to narrow the scope of discovery sought. That tells against permitting the same ground to be re-traversed now, at least in the absence of a material change of circumstances.
38In my view, the issues said to be informed by documents in proposed categories 1, 2, 3 and 4 are of very minor import in the context of these proceedings as a whole, particularly in circumstances where neither the second nor third defendant will give evidence on oath of their wishes. They are not new issues that have emerged since the original discovery order, nor does necessity for them emerge from documents discovered to date. There is no reason why they could not have been agitated on 3 December 2013, and indeed in part at least they were, and were intentionally abandoned; there is no good reason to permit the forensic judgment then made to be revisited, at this the stage of the proceedings when the final hearing is imminent. Absence of discovery will not unduly affect the plaintiffs' ability to advance the case they seek to make.
39Proposed category 5 is supported by the plaintiffs on the basis that the risk associated with the appointment of a non-lineal descendant under the corporate trustee proposal is an important issue in the case, and that the defendants must have considered the risk and have a plan to deal with it should Rio Tinto endeavour to exercise the pre-emptive rights. I accept that the risk associated with the proposal is a relevant issue, but that risk is essentially a question of law, not a question of fact upon which discovery would be ordered. In any event, any assessment by the defendants of any such risk is likely to be intertwined with, and inextricable from, privileged legal advice. Moreover, if the defendants indeed do have a good plan to address any such risk, that may reduce the risk and would support their case for a corporate trustee; but if they chose not to put it forward, I do not see how the plaintiffs' case is prejudiced by not knowing it. Discovery of that category is not necessary in the relevant sense.
40Again, this category does not arise from a new issue, or from documents discovered under the 3 December order. I would not order additional discovery in proposed category 5.