4 The relevant principles which apply to an application of this kind may be distilled from the judgment of Wilcox J in the Federal Court of Australia in Springfield Nominees Pty Ltd v Bridgelands Securities Ltd (1992) 38 FCR 217. I summarised my understanding of the effect of his Honour's judgment in those proceedings and other authorities in Industrial Registrar of New South Wales v The Uniting Church in Australia Property Trust (NSW) [2003] NSWIRComm 387. I do not apprehend that the other members of the Full Bench of this Court in those proceedings, Boland J and Haylen J, disagreed with my judgment on this aspect in those proceedings. In Uniting Church I said:
"[20] In Springfield, Wilcox J was called upon to determine whether a witness statement which had been filed in proceedings instituted in the Federal Court of Australia could be used by a stranger to those proceedings for the purpose of litigation then current before the Supreme Court of New South Wales. The witness statement had never been read or otherwise used in the Federal Court proceedings which had settled before going to trial.
[21] Wilcox J held that the witness statement could not be used in the Supreme Court proceedings unless the maker of that statement had consented or the Federal Court was prepared to grant leave for its use. In adopting this approach his Honour utilised, by way of analogy, principles that applied to the use of documents which had been produced in proceedings pursuant to the discovery process. Such documents might be used for purposes other than the proceedings with respect to which they had been created either with the consent of the author or by leave of the Court in which the proceedings had been instituted. In those proceedings the author had not consented and it was necessary to determine the principles which would apply to the exercise of discretion as to whether leave would be granted. In the course of determining the approach to the proper exercise of the discretion of the Court his Honour observed that there were many factors which were relevant. He said:
It is neither possible nor desirable to propound an exhaustive list of those factors. But plainly they include the nature of the document, the circumstances under which it came into existence, the attitude of the author of the document and any prejudice the author may sustain, whether the document pre-existed litigation or was created for that purpose and therefore expected to enter the public domain, the nature of the information of the document (in particular whether it contains personal data or commercially sensitive information), the circumstances in which the document came into the hands of the applicant for leave and, perhaps most important of all, the likely contribution of the document to achieving justice in the second proceeding. (at 225)
[22] It should be observed that Wilcox J based his approach on well-known principles developed in connection with the discovery process. These are exemplified by the decision of the House of Lords in Home Office v Harman [1983] 1 AC 280. The majority of their Lordships emphasised the invasive nature of the discovery process and the obligation imposed on legal practitioners by way of an implied undertaking not to use any discovered documents for any purpose whether collateral or ulterior beyond the purposes of the proceedings with respect to which discovery of the documents had occurred. As Lord Roskill observed, a party to the proceedings might seek the consent of the owner of the documents or the leave of the Court in which the proceedings had been taken for the use of the documents for some other purpose. His Lordship observed that he found it 'difficult to think of circumstances in which the Court might be willing to give such leave in favour of a stranger and against the wishes of the owner of the documents.'
[23] This matter was revisited by the House of Lords in Crest Homes plc v Marks [1987] AC 829. In those proceedings the House of Lords permitted the use of documents which had been discovered pursuant to proceedings seeking an Anton Pillar order for the purpose of maintaining proceedings for contempt against the party who had discovered those documents in earlier proceedings between the same parties. These were said to create 'the very special circumstances' which detracted 'from the integrity of the implied undertaking given to the Court on behalf of the party obtaining an order for discovery'."