TAMBERLIN J:
1 I agree with the reasons for judgment of Gyles J on both the appeal and cross-appeal and with the orders proposed by his Honour.
2 In my view, privilege had been waived in the relevant parts of the letter of 28 September 2000. The relevant principles as to waiver were considered by the High Court in Mann v Carnell (1999) 201 CLR 1 in the context of a claim for legal professional privilege and the communication of legal advice to a third party. At [29] Gleeson CJ, Gaudron, Gummow and Callinan JJ said:
'Waiver may be express or implied. Disputes as to implied waiver usually arise from the need to decide whether particular conduct is inconsistent with the maintenance of the confidentiality which the privilege is intended to protect. When an affirmative answer is given to such a question, it is sometimes said that waiver is 'imputed by operation of law'. This means that the law recognises the inconsistency and determines its consequences, even though such consequences may not reflect the subjective intention of the party who has lost the privilege. … What brings about the waiver is the inconsistency, which the courts, where necessary informed by considerations of fairness, perceive, between the conduct of the client and maintenance of the confidentiality; not some overriding principle of fairness operating at large.'
3 At [34] their Honours continued:
'… Disclosure by a client of confidential legal advice received by the client, which may be for the purpose of explaining or justifying the client's actions, or for some other purpose, will waive privilege if such disclosure is inconsistent with the confidentiality which the privilege serves to protect. … considerations of fairness may be relevant to a determination of whether there is such inconsistency.' (Emphasis added)
4 This emphasis on fairness when considering a claim of imputed waiver is an application of statements made by the High Court in Attorney-General for the Northern Territory v Maurice (1986) 161 CLR 475 per Gibbs CJ at 481 and Mason and Brennan JJ at 488. In that case, Deane J referred to the assertion of the effect of a communication where he said at 493:
'Thus, ordinary notions of fairness require that an assertion of the effect of privileged material or disclosure of part of its contents in the course of proceedings before a court or quasi-judicial tribunal be treated as a waiver of any right to resists scrutiny of the proprietary of the use he has made of the material by reliance upon legal professional privilege. … If, in such a document, a party sets forth part of the contents of a particular identified document or communication or asserts the effect of or his reliance upon a particular identified document or communication, it may be that consideration of fairness might require that he be treated as having waived any legal professional privilege in relation to the whole document or communication. … Where, however, he does no more than make use of privileged material (e.g. legal advice, expert opinion or statements of potential witnesses) for the purpose of formulating the statement in such a document of the details of the case which he proposes to make, it would be an affront to ordinary notions of fairness to hold that the effect of his compliance with that procedural requirement was that he has waived his legal professional privilege …' (Emphasis added)
5 In the present case it is evident from the letter of 28 September 1999, which was written by the Australian Government Solicitor to the solicitors for Mr Peter Bennett, that the substance of the advice for the Australian Government Solicitor was conveyed in a context which did not attract an obligation of confidentiality in relation to the letter. It is apparent that the substance and effect of the advice was being communicated in order to emphasise and promote the strength and substance of the case to be made against Mr Bennett. This is evident from the following two extracts:
'(2) AGS [Australian Government Solicitor] has now advised Customs that Public Service Regulation 7(13) does not prohibit all public comment by an officer on matters of public administration. Rather, the sub-regulation must be construed or 'read down' so as not to apply to public comment on matters of administration which are not already on the public record …
…
(9) AGS has advised Customs that your client is not correct in asserting that he is not subject to the Act and Regulations if he makes public statements about Customs-related matters in his capacity as President of COA [Customs Officers' Association]. It is a matter for your client, in the light (perhaps) of legal advice provided by you, whether he adheres to or moderates his position on this question …' (Emphasis added)
6 The above extracts express the substance of the advice that was given by the Australian Government Solicitor in each of the paragraphs. In my view, it would be inconsistent and unfair, having disclosed and used the substance of the advice in this way, to now seek to maintain privilege in respect of the relevant parts of that advice which pertain to the expressed conclusion. It may perhaps have been different if it had been simply asserted that the client has taken legal advice and that the position which was adopted having considered the advice, is that certain action will be taken or not taken. In those circumstances, the substance of the advice is not disclosed but merely the fact that there was some advice and that it was considered. However, once the conclusion in the advice is stated, together with the effect of it, then in my view, there is imputed waiver of the privilege. The whole point of an advice is the final conclusion. This is the situation in this case.
7 As Kirby J points out in Ampolex Ltd v Perpetual Trustee Company (Canberra) Ltd (1996) 137 ALR 28 at 34:
'I agree that a mere reference to the existence of legal advice would not amount to a waiver of its contents. Rolfe J appears to have acknowledged this distinction by later rulings to which I was taken during the course of argument. But at least in respect of the substance of the legal advice supporting Ampolex's assertion about the correct ratio, which is in contest here, it is strongly arguable that the public reference the supporting legal advice, waived the privilege as to the precise content of the legal advice on that point. I cannot say that the ruling is attended by such doubt as to promise a substantial prospect of a grant of special leave to appeal to this court. (Emphasis added)
8 The reference to Rolfe J is to the observations of his Honour in Ampolex v Perpetual Co (Canberra) Ltd (1996) 40 NSWLR 12. In that case, Rolfe J had to consider whether there had been a waiver of legal professional privilege in legal advice given to Ampolex by counsel. His Honour considered what was meant by 'the substance' and 'the effect' of advice or relevant evidence for the purposes of s 122(2) of the Evidence Act 1995 (Cth). At 19, his Honour said:
'In my opinion the substance of the advice may well be disclosed if the ultimate conclusion, without the supporting reasoning process, is revealed. At that stage there has been, in my opinion, a disclosure of the substance of the advice, i.e. what the advice is. Further the ultimate conclusion, whilst it may be a 'result' or 'consequence' of the reasoning is more than that: in its own right it is the essence or vital part of the advice. Some advices may be very short and answer the question whether minimum of reasoning or, in some circumstance without any.' (Emphasis added)
9 The same approach was taken by the Full Federal Court after referring to Ampolex in Adelaide Steamship Co Ltd v Spalvins (1998) 152 ALR 418 at 431.
10 In the present case, the primary judge considered that the existence of waiver was a question of degree as to whether the disclosure amounted to a waiver of the privilege. His Honour at [35] of his judgment said:
'To disclose the legal position or stance that a lawyer has advised a client to take is, in my view, not inconsistent with the maintenance or confidentiality in the communication giving the advice (which may have much detail or lack of such detail) at least where oppression is not being essayed by such disclosure. It has never, in my experience, been contended to the contrary, although it is an everyday occurrence for solicitors to tell their client's opponents … that their clients have been advised to take some specified course or stance. No doubt there are cases, of which this may perhaps be one, where there are questions of degree as to whether the detail of the advice has also been disclosed to such an extent that it lacks congruity to make the disclosure but seek to keep the actual advice confidential.' (Emphasis added)
11 His Honour does not appear to have been referred to the authorities referred to above, with the exception of Mann's case.
12 While it is true that questions of fact and degree may be involved in determining whether the conduct or circumstances are such that waiver can be imputed, nevertheless, there is an underlying principle of law to be resolved as to what in law may or will constitute a waiver. In these circumstances, I do not consider that it can be said to be merely a question of fact and degree so that an appellate court cannot re-examine the matter and come to a different conclusion. In this case, the 'detail' of the advice has not been disclosed, but there is no doubt that the substance of the conduct has been stated. Hence, not only is the 'legal stance' or 'position' disclosed but also the interpretation which has been advised as correct. The question whether this is a waiver necessarily involves the consideration and application of legal principles, as the appellate authorities on waiver demonstrate.
13 Various expressions are used in the formulation of principles relating to waiver of legal professional privilege, such as references to 'the substance', 'effect', or 'content' of the advice. The weight of the authorities, in my view, supports the conclusion that the disclosure of the conclusion reached in or course of action recommended by, an advice can amount to waiver of privilege in respect of the premises relating to the opinion which has been disclosed, notwithstanding that this reasoning is not disclosed. By way of illustration, if there is a disclosure that a client has been advised that interpretation 'A' is preferable to interpretation 'B' of a legislative provision, then even if there is no disclosure of the reasoning leading to that conclusion, the reasoning and content of the advice may be waived, including the factual premises and circumstances leading to that conclusion.
14 Disclosure of one conclusion but not others in an advice does not necessarily amount to waiver in respect of the non-disclosed conclusions. However, if the conclusions and reasoning are so interconnected that they cannot be separated or isolated, then it may be that the whole of the advice on which all those conclusions are based, must be considered to have been waived.
15 In my view, his Honour erred in law in holding that there had been no implied waiver in the present case, and accordingly, the appeal must be allowed on this point.
16 I should add that I do not consider that the position expressed in paragraph 8 of the letter of 28 September 1999 can be said to amount to an imputed waiver in respect of the matters referred to therein. The statements and positions expressed in that paragraph do not in terms purport to express the conclusions or effect of legal advice given by the Australian Government Solicitor.
17 As to the extent of the disclosure, this is a matter for consideration by the primary judge, but it seems to me prima facie that the waiver extends to those matters and reasoning relating to the specific conclusions expressed in paragraphs 2 and 9 which I quoted above.