10 The initial position of the plaintiffs, which was advanced through an affidavit sworn by their solicitor, Mr Mitchell Mathas, was that the amendments did not materially alter the case pleaded by the plaintiffs against the various defendants so that, he said, the plaintiffs did not consider that costs would be thrown away as a result of the amendments. Mr Mathas' evidence in that affidavit was that the amendments were prompted by a review of material available to the plaintiffs (including the parties' discovered documents) and were designed to reorganise the summons "into a more efficient and better particularised pleading".
11 The defendants' evidence - in particular, the evidence of Mr Ashley John Black, the solicitor for the Macquarie parties, and Mr Bruce John Ramsay, the solicitor for Phillips Fox, demonstrated to my satisfaction that in fact the proposed amendments made substantial, and substantive, changes to the cases pleaded against their respective clients. It was apparent from their evidence - and in my opinion it is apparent, in any event, from a comparison of 5 FAS with the fourth further amended summons - that 5 FAS in the form propounded at the hearing before me did materially alter the cases pleaded against the defendants. Ultimately Mr Mathas conceded as much in cross-examination.
12 One of the difficulties, in understanding the changes, was that the draft that was propounded at the hearing before me was not marked up in the orthodox way, so as to show changes from the fourth further amended summons. Mr Mathas sought to explain this by saying that the mark ups would have been so extensive (because of the reorganisation of the document as well as the changes to its text) as to be virtually useless. Be that as it may, the task of comparing the document with the fourth further amended summons was rendered extremely difficult by the absence of marking up. Mr Black was able to use a computer programme to create, in effect by a process of reverse engineering, a marked up version of 5 FAS that showed the changes from the fourth further amended summons; but inevitably, there were some gaps in what was disclosed.
13 I should note that the Macquarie parties submitted that Mr Mathas' conduct in not providing a marked up copy of the draft 5 FAS "is only explicable as an attempt to avoid disclosure of the true extent of the amendments which were sought". Although Mr Mathas was cross-examined as to the reason why he did not provide a marked up copy, that proposition was not put to him. I do not accept it.
14 It was put to Mr Mathas in cross-examination that the documents that, he said, prompted the redrafting exercise had been available to his firm or the plaintiffs for a considerable time. Mr Mathas conceded that the great majority of those documents had been so available since November 2001. I should note that the plaintiffs submitted that, notwithstanding the general position that I have just noted, what they called "the central document" in relation to the amendments sought against PwC only came to Mr Mathas' attention "recently". However, in the course of the hearing on 7 October 2003, I was informed without objection that "there is no dispute about the fact that that document was available to the plaintiffs' legal representatives in November 2001, although it did not completely come to Mr Mathas' attention at that time". There was no explanation as to why this "central document" had taken the best part of two years to come to Mr Mathas' attention.
15 It appears that, when the plaintiffs served their expert evidence, a number of the defendants raised with the plaintiffs the point that the evidence went well beyond the existing pleadings. I infer that the principal reason for the plaintiffs' review of their pleadings was to ensure that the factual case that they sought to make out could be run within the confines of their pleadings. Indeed, I think, Mr Mathas said as much in his affidavit, when he said that the amendments followed a number of events and were made "with the benefit of having prepared the Plaintiffs' lay and expert evidence". The plaintiffs' submissions on costs picked up this point. They note that, after the plaintiffs had provided discovery, reviewed the discovery of other parties and compared it to material already available, and prepared and filed and served their own evidence, they "then, appropriately, attended to addressing inconsistencies between the evidence it [sic] had filed and the Summons".
16 Mr Mathas initially sought to maintain the position that, because the amendments did not materially alter the pleaded case, the existing timetable (including a hearing, fixed as long ago as 7 March 2003, for the first week of term in 2004 with an estimate of 3 months) could be maintained. However, the evidence demonstrated to my satisfaction that if the amendments were granted, the amount of work that would be required to be done would make it impossible to maintain that hearing date. The evidence further demonstrated to my satisfaction that it would not be appropriate to do (as was initially suggested) and simply put the commencement back for a period of time. When the hearing before me concluded, upon the basis that a redraft of 5 FAS was to be prepared and that the parties were to have the opportunity to make submissions in respect of it, the inevitable was recognised and, at the request of the defendants, and with no opposition from the plaintiffs, I vacated the hearing date that had been fixed.
17 Taken overall, the evidence discloses no explanation other than that recorded in para [15] above from the plaintiffs as to why the amendments were undertaken, in such a substantial manner and at such a late stage (relatively speaking) in the proceedings. The explanation that was given has been substantially conceded to be inaccurate. In particular, Mr Mathas' concession that the great majority of documents that were relevant to the amendments had been available since November 2001 undermined the suggested explanation that it was the review of discovered documents that had prompted at least some of the amendments.
18 Further, the evidence discloses no satisfactory explanation as to why the amendments that are now sought to be made could not have been made in February 2003, when the fourth further amended summons was filed. To the extent that the revision is as a result of the plaintiffs having filed their lay and expert evidence and received the defendants' comments thereon, that does not seem to me to be something that should be taken to account in the plaintiffs' favour in considering the basis upon which costs should be ordered.
19 I have no difficulty in understanding that, in complex litigation of this kind, plaintiffs will from time to time need to amend; and that, from time to time such amendments may change substantially the case sought to be made. But one would expect that, in the circumstances disclosed by the evidence, the plaintiffs' claims in these proceedings should have been finalised well before 17 October 2003, when the revised version of 5 FAS was produced.
20 One feature of concern, as between the plaintiffs and the Macquarie parties, is that the claim as originally pleaded (and as maintained through successive amendments up until and including the fourth further amended summons) included an assertion that the Macquarie parties had actual knowledge of the alleged falsity of representations made in the prospectus. Those allegations, as Mr Mathas conceded in cross-examination, were serious matters, involving issues of corporate and individual reputation, which would necessarily be taken extremely seriously and thoroughly investigated. Those allegations were dropped in 5 FAS. No explanation has been given as to why they were dropped at such a late stage, relatively speaking, in the proceedings.
21 Another feature of concern, in particular as between the plaintiffs and Phillips Fox, is that in August 2002, and again in June 2003, the plaintiffs expressly stated to Phillips Fox that there would be no negligence claim brought against them in respect of advice said to have been given. In fact, the form of 5 FAS that was debated before me contained such a claim (paras 177 to 197). Once the amendment was notified to Phillips Fox, they pointed out its defects; but the plaintiffs persisted with the proposed amendment at the hearing before me. As I have noted, that claim has now been dropped in its entirety from the current draft of 5 FAS. Phillips Fox ' opposition to the amendment has in substance been justified.