10 Reading that passage as a whole - and having regard to the example to which his Honour refers in it - its effect is not that there must be a serious basis for supposing that the document sought will assist the case of the issuing party, but that it will be sufficient if, for example, the documents sought would enable the evidence of an opposing witness to be tested.
11 In any event, that was in the context of a claim for public interest immunity. The approach seems to have migrated from cases of public interest immunity to objections to subpoenas on the ground of absence of legitimate forensic purpose in R v Saleam (1989) 16 NSWLR 14, in which Hunt J, with whom Carruthers and Grove JJ agreed, said (at 18):
In my view, the criterion finally suggested by Gibbs CJ in Alister v The Queen as that which had to be satisfied before a court should inspect documents in relation to which a claim for public interest immunity had been made is appropriate to be applied also when the trial judge has to determine whether access should be granted to documents subpoenaed from the police in relation to which objection has been taken that no legitimate forensic purpose exists for their production. He must be satisfied that it is "on the cards" that the documents would materially assist the accused in his defence.
12 It is noteworthy that his Honour's observations were limited to the context of "documents subpoenaed from police", and the context was that they had been subpoenaed in the proceedings in which the police or the Crown were prosecuting the accused. The point of what his Honour said was not addressed to the precise scope of the test - whether it was that the documents sought might illuminate significantly issues in the case generally, or that they might materially assist the accused in his defence - but rather to how legitimate forensic purpose was to be established in the context of a criminal trial and specifically the "on the cards" test as opposed to some more liberal one.
13 In Carroll v Attorney-General of New South Wales (1993) 70 ACrimR 162, Mahoney AP said (at 182):
But mere relevance is not enough: thus, it is not enough for the party to show only and without more that the document plainly shows and shows only that his case cannot be made out. It is not enough for the party to say: "The documents are relevant in the sense that prima facie they establish the case against me: therefore I am entitled to see them and to tender them."
14 His Honour, consistently with Saleam, although not referring to it, concluded that the party must be able to indicate that the document is relevant in the sense "that it may assist his case". Kirby P, though in dissent in the result, was content to accept for the purposes of the case the same view of the law: his Honour said, at 170, with reference to Alister:
But access may be granted if it appears to be "on the cards" that the documents would materially assist the accused.
15 A little later, on the same page, after citing the passage to which I have referred from Saleam, his Honour said:
I am prepared to accept these criteria in the present case. Is there a legitimate forensic purpose? Is it "on the cards" that access to the police affidavits would be of assistance to the plaintiff's case?
16 It seems to me that the application of a rule, originally applicable in the context of discovery under rules which no longer apply, has migrated in the decisions to which I have referred to the context of a subpoena for production without recognition of the distinction of the processes, in a context which has been complicated by an overlapping claim for public interest immunity.
17 Other authority, of no less standing, points to a wider test. I have already referred to the tests stated in National Employers' Mutual General Insurance Association v Waind and Hill, and to Trade Practices Commission v Arnotts. Reference might also be made to Brand v Digi-tech (Australia) Ltd [2001] NSWSC 425 in which Hunter J, on an application to set aside a subpoena in civil proceedings, referred to National Employers' Mutual General Insurance Association v Waind and Hill (at 385), in which Moffitt P had said:
As I understand past practices where, however, objection is raised by owners of the documents, the judge examines the documents with some care to ensure there is no abuse of the subpoena, and to determine whether the documents appear relevant in the sense they relate to the subject matter of the proceedings, in which event, he will permit inspection by one or both parties at an appropriate time ...
18 Carroll and Saleam were both decisions in the special context of a subpoena addressed to police for the production of documents in connection with the prosecution in which those documents might be used. In my view, Waind states the general test. The stricter test would require an issuing party to be able to predict the contents of documents potentially relevant, and would unduly constrain the ability of litigants to investigate the facts. In a medical negligence case, for example, one cannot know in advance whether the doctor's and hospital's notes are likely to assist one party or the other, but no-one could suggest that there would be no legitimate forensic purpose in issuing a subpoena for their production. In Brand, Hunter J concluded (at [36]):
I think it is indisputable that, if the subpoenaed documents are by their description arguably relevant or capable of providing a legitimate basis for cross examination on credit matters, then an application to set aside a subpoena on the grounds of irrelevance of the documents to the proceedings is misconceived. It is equally clear, in my view, that, if the description of the documents is such as to admit of a finding that the documents are manifestly irrelevant and incapable of touching matters of credit, then the issuing of such a subpoena represents an abuse of process.
19 In my view, that is the test which ought to be applied in the present circumstances where, although what is sought are documents from the custody of the police, they are not sought in the context of a prosecution. Indeed, it is known that the defendant, to whose potential prosecution they might otherwise relate, has been granted immunity. Accordingly, I would approach the question primarily on the basis of asking whether, on the one hand, the documents called for are apparently relevant or capable of providing a legitimate basis for cross-examination, in which case there is a legitimate forensic purpose for the issue of subpoena, or whether on the other, they are manifestly irrelevant and incapable of touching matters of credit, in which case the subpoena would be an abuse of process. However, ultimately, it seems to me that even on the narrower test, in the context of this case, I would reach the same result. In order to understand why, it is necessary to refer to some of the history and issues in this litigation.
20 The proceedings were commenced by Summons filed by A Pty Ltd whose principal is S, on 19 May 2006 claiming an order that a caveat in respect of land at Drummoyne, of which Z and his wife are the registered proprietors, be extended until further order, and a declaration that A had an equitable interest in that land. The caveat in question had been lodged by A and was dated 30 January 2006. It was stamped on 20 February 2006 with duty on advances of $300,000, and it claimed an interest in the land "as equitable mortgagee" by virtue of a "written loan agreement (since destroyed by fire) entered into between the caveator and the registered proprietor in June 2005 in the amount of $300,000."
21 The proceedings continued on pleadings, and, in the Statement of Claim filed on 25 July 2006, A claims an order for payment of the sum of $300,000 and interest, and a declaration that the Drummoyne property is charged with payment of those sums. The Statement of Claim pleads a cause of action based on an agreement that A would lend Z and his wife $250,000, and that the defendants would repay $300,000.
22 The Defence, which appears to have been signed by the solicitor for the defendants on 1 August 2006, but so far as I can tell has not yet been filed, denies any agreement to borrow $250,000 or any other sum; denies receipt of the sum of $250,000 or any other sum; and denies any agreement to the effect alleged; it also denies that A has a caveatable interest in the Drummoyne property. In view of the matters to which I am about to come, it is curious that it does not raise any defence of illegality of purpose, and the defendants may be well advised to consider whether, given the issues which they apparently intend to raise at trial, the defence in its present form would permit them to do so.
23 Nonetheless, it is clear from the affidavit material that has been filed that the defendants accept that the plaintiff advanced - to use a neutral word - a sum of $250,000, but say that it was not a loan at all, but a contribution to a purchase price of $400,000 for a quantity of pseudoephedrine for the intended purpose of a "speed cook" by which it would be converted into marketable drugs. The defendants apparently wish to contend that the transaction is thus tainted by an illegal purpose. In any event, whether or not that is raised as a specific defence, the defendants wish to argue it was in those circumstances, as distinct from those asserted by the plaintiff, that the $250,000 was advanced by the plaintiff.
24 It will be remembered that the caveat referred to a "written loan agreement (since destroyed by fire)". In S's affidavit sworn 18 May 2006, he deposes that, at the time that he says the loan agreement was made, he recorded the agreement on a piece of paper on which he made provision for signature by Z and his wife. He says that Z returned a couple of hours later with the document duly signed. Later in the same affidavit, he says that he placed the signed original in an office area next to his bedroom with other documents in his rural property, which was completely destroyed by fire on 22 June 2005. He then describes circumstances in which police played to him a recording of a conversation, in which he recognised the voice of Z, which would implicate Z in that fire.
25 Before me on this application, as Exhibit RX06, is a document which appears to be a memorandum from the plaintiff's insurers and suggests that the persons involved in setting the fire were Z and another. That, of course, would be little, if any, evidence on final hearing, but all I am concerned with here is whether there is reason to suppose that the documents, the subject of the subpoena, would illuminate the issues in the case, or alternatively materially assist the plaintiff's case.
26 In Z's affidavit sworn 10 July 2006, he says that he stayed at S's rural property on about four occasions, and that on the occasions that he travelled there, there were no files or papers. He then adds "I have neither been interviewed nor charged with respect to a fire at [S's rural property], or at all". He annexes to his affidavit a number of communications which he says were received in his post office box which, on their face, convey threats, including suggestions that the caveat will be removed if "you stop being a witness"; the obvious inference is that A Pty Ltd, or its principal S, was the source of those threats. Also in evidence before me on this application, as Exhibit RX05, is a file note of A's solicitor of a conversation with the informant in the prosecution of H, the other alleged participant in the fire, who has since been convicted, attributing to the police officer, in respect of Z: "He does have complete immunity for threatening calls to S, murder - involvement in, arson".
27 After the subpoena was issued, there was an exchange of correspondence between A's solicitor and the Crown Solicitor on behalf of the Commissioner. In a letter of 3 April 2007 that, for some inexplicable reason, was marked "without prejudice", A's solicitors indicated that they would accept a limited production as specified in an annexure to that letter in satisfaction of the subpoena: