At 51, while dealing with the question whether the Government was entitled to protect information which was not public property even if no public interest was served by maintaining confidentiality, Mason J said:
However, the plaintiff must show, not only that the information is confidential in quality and that it was imparted so as to import an obligation of confidence, but also that there will be 'an unauthorised use of that information to the detriment of the party communicating it'). Coco v. A.M. Clark (Engineers) Limited [1969] RPC 41 at 47.
27 Mason J was speaking of a claim relating to government information. The need to show detriment has been questioned and the formulation of McHugh JA in AG (UK) v. Heinemann Publishers Pty Ltd (1987) 10 NSWLR 86 at 190 to which I will refer does not include a requirement to show detriment, although it does require that the preservation of confidentiality or secrecy be a substantial concern of the plaintiff. Lord Keith of Kinkel said in AG v. Guardian Newspapers (No 2) [1990] 1 AC 109 at 256;
Further, as a general rule, it is in the public interest that confidences should be respected, and the encouragement of such respect may in itself constitute a sufficient ground for recognising and enforcing the obligation of confidence even where the confider can point to no specific detriment to himself. Information about a persons private and personal affairs may be of a nature which shows him up in a favourable light and would by no means expose him to criticism. The anonymous donor of a very large sum to a very worthy cause has his own reasons for wishing to remain anonymous, which are unlikely to be discreditable. He should surely be in a position to restrain disclosure in breach of confidence of his identity in connection with the donation. So I would think it a sufficient detriment to the confider that information given in confidence is to be disclosed to persons whom he would prefer not to know of it, even though the disclosure would not be harmful to him in any positive way.
28 It will be seen that in Lord Keith's view there is a need to show sufficient detriment but in the protection of a person's private and personal affairs there can be some relevant detriment although disclosure would not be harmful in any positive way. The example of an anonymous donor is not, as far as I am aware, drawn from the law reports and with respect to his Lordship, the example is on the edge of fantasy. The learned authors of "Equity Doctrines and Remedies" Meagher, Gummow & Lehane (3rd ed) 1992 at p 872 question the need to show detriment. In Smith Kline & French Laboratories (Aust) Limited & Ors v. Secretary, Department of Community Services & Health [1990] 22 FCR 73 at 111-112 Gummow J made observations on the significance of detriment which show his Honour's view that it may not, or may not always be necessary to show detriment. That was a case in which there was detriment in fact.
29 In my opinion a business organisation would very rarely have any claim for a court to protect its sensitivities or feelings about private and personal affairs, or be able to show that the sensitivity is that of the plaintiff and not of officers. In the present case I am of the view that it is necessary for NRMA to show detriment, and also necessary for the Court to appraise the detriment when deciding whether confidentiality should be protected by injunction.
30 In Moorgate Tobacco Co. Ltd v. Philip Morris Ltd & Anor (No. 2) (1984) 156 CLR 414 at 438 Deane J said:
Relief under the jurisdiction is not available, however, unless it appears that the information in question has 'the necessary quality of confidence about it' (per Lord Greene MR, Saltman Engineering Co Ltd v. Campbell Engineering Co. Ltd (1947) 65 RPC 203 at 215) and that it is significant, not necessarily in the sense of commercially valuable (see Argyll v. Argyll [1967] Ch 302 at329) but in the sense that the preservation of its confidentiality or secrecy is of substantial concern to the plaintiff.
31 The need for the plaintiff to show, and for the Court to assess that the information in question has the necessary quality of confidence about it almost invariable reappears in judicial formulations and shows that, although parties may have established by some arrangement between them that some information is confidential, it remains for the Court to decide whether it has the necessary quality.
32 When a Court makes an order which creates an exception of the general rule the Court acts on a careful address to the terms of the exception and an evaluation of the need to enforce the exception by an injunction. An injunction is a discretionary remedy and the need to evaluate whether or not an injunction should be made in a particular case is inescapable. With respect I am of the view that the discretionary nature of injunctive relief, in confidential information cases as in all cases, is a qualification to the word "invariably" used by McHugh JA (as his Honour then was) in AG (UK) v. Heinemann Publishers Pty Ltd (1987) 10 NSWLR 86 at 190. In the course of the passage at pp189-192 McHugh JA said:
Once it is established that a person without authorisation is proposing to publish confidential information imparted to him in confidence during a private or business relationship, little more need be proved for Equity to restrain the publication. If information imparted in confidence retains the necessary quality of confidence 'in the sense that the preservation of its confidentiality of secrecy is of substantial concern to the plaintiff', then, subject to any special defences, Equity will invariably restrain the publication: cf Moorgate Tobacco Co Ltd v Philip Morris Ltd (No 2) (1984) 156 CLR 414 at 438 per Deane J. Private concern or embarrassment is prima facie sufficient detriment to ground an injunction to restrain the threatened publication of confidential information acquired by one citizen in the course of his or her relationship with another.
33 In my opinion the statement that Equity will invariably restrain the publication is not altogether consistent with the following reference to private concern or embarrassment as prima facie sufficient detriment to ground an injunction; if the response were invariable, the sufficiency of private concern or embarrassment would be more than prima facie and would be unqualified. The passage in the judgment of Deane J in Mooregate Tobacco Co. Ltd v. Philip Morris Ltd (No. 2) (1984) 156 CLR 414 at 438 to which McHugh JA referred does not express the concept of invariability.
34 If it were otherwise appropriate to grant any interlocutory injunction in the present case, the injunction would not be in the broad terms claimed but would be moulded so as to deal only with information which was defined in the order and of which it was found that there was a reasonable apprehension that it would be communicated and published. The only part of all the proceedings at the meeting of which that finding could be made is the material which Ms Keating considered and might decide she would publish; that is, events and discussions in General Business relating to Mr Whitlam's occupation of the Chair. In an exercise of discretion on whether confidential information of that kind should be protected by injunction I am of the view that the detriment which publication would cause to NRMA is a prominent consideration, and that elements of private concern or embarrassment to NRMA have no real weight. The detriment which is relevant is detriment to NRMA itself, and the private concern or embarrassment of particular Board members is not the subject protected by the Code of Conduct. I do not think that NRMA is an organisation for which the concept of private concern or embarrassment has any real meaning, and cases in which a breach of confidence involves invasion of personal privacy (Duchess of Argyll v. Duke of Argyll [1967] Ch 302 dealing with marital confidences), or the mildly fantastic donor who wished to remain anonymous conjured up by Lord Keith in AG v. Guardian Newspapers at [1990] 1 AC 256 can be left out of consideration.
35 The considerations adverse to publishing information relating to conflict on the Board were collected and stated very fully and forcefully by Mr Carter the Chief Executive Officer in his statement to the Board; they were to the effect that the reputation of NRMA is very important for its affairs, and is very greatly injured by publicity about board turmoil; he produced information suggesting that there actually had been injury to NRMA's reputation and to perception of NRMA by employees and members, and to what he referred to as "perceived values of the brand" and that this injury was closely related to publicity about conflict and turmoil within the Board. There are in my view other interests of the NRMA involved in considering whether publication of proceedings of the Board relating to the occupation of the Chair, and discussion on that subject, should be restrained. The membership of NRMA is very large, I was told 1.8 million, and its membership is so large and its activities are so pervasive that it does not seem too much to say that the NRMA is part of the general organisation of society in New South Wales. In my view interests of the NRMA as a whole would be positively served by making public, for the information of members and others, events and circumstances at a Board meeting relating to occupation of the Chair while ASIC proceedings are pending against Mr Whitlam. The readiness of media to report such things is a reflection of real, well-based and widespread interest and concern in the community. If it were otherwise appropriate to make an interlocutory injunction, the discretionary considerations against doing so are quite strong.