Respondent's submissions
8 The Council argued that no issue has yet been raised in these Class 1 proceedings which can give rise to a finding that a legitimate forensic purpose is served by the production of the Council's legal advice. Nor has there been any waiver of legal professional privilege. The letter of 7 November 2006 does not disclose the substance of any advice.
Finding
Legitimate forensic purpose
9 The parties agreed that the issue of whether there was a legitimate forensic purpose served by the document sought must be determined so I will deal with that issue first. This s 97 appeal is a merit appeal against the Council's decision to impose certain development consent conditions. In circumstances where the Court will form its own opinion of whether particular conditions should be imposed, the content of legal advice received by the Council after the grant of development consent as in the case of the subpoenaed document is usually irrelevant. The Council's own "state of mind" and the advice it obtained in forming its views, particularly "after the event", are not material.
10 Having said that, it appears from the development consent conditions in issue and the particulars provided by the Council's solicitor, which are not completely clear in my view, that there may be legal issues concerning condition 2 in particular in relation to the Council's role as a Water Supply Authority under the Water Management Act 2000. Whether this is an issue which will ultimately arise in these proceedings is as yet undetermined.
11 Under directions made by the Registrar the Applicant was to have filed a Statement of Issues in these proceedings on 19 March 2007 but has not yet done so. No criticism is intended of the Applicant but the situation remains that in the absence of that Statement of Issues the legal issues, if any, which may arise in these Class 1 proceedings are not yet specified. It is not presently possible to determine if the production of the subpoenaed document is of "sufficient" or "apparent" relevance (Terry Street at [13]) to the issues in these proceedings to suggest access ought be granted.
Has there been waiver?
12 Legal professional privilege or client legal privilege attaches to legal advice obtained. There is no disagreement here that the legal advice is privileged. The disagreement is whether or not that privilege has been waived.
13 As observed by Jagot J in Jacobsen and Anor v Ballina Shire Council (2006) 146 LGERA 1 the Evidence Act 1995 does not apply in Class 1 proceedings in this Court so that the common law doctrine of legal professional privilege is relevant: see [18] where her Honour refers to Baker v Campbell (1983) 153 CLR 52.
14 In Mann v Carnell (1999) 201 CLR 1 the High Court (Gleeson CJ, Gaudron, Gummow and Callinan JJ) held at [28] - [29]:
At common law, a person who would otherwise be entitled to the benefit of legal professional privilege may waive the privilege. It has been observed that "waiver" is a vague term, used in many senses, and that it often requires further definition according to the context. Legal professional privilege exists to protect the confidentiality of communications between lawyer and client. It is the client who is entitled to the benefit of such confidentiality, and who may relinquish that entitlement. It is inconsistency between the conduct of the client and maintenance of the confidentiality which effects a waiver of the privilege. Examples include disclosure by a client of the client's version of a communication with a lawyer, which entitles the lawyer to give his or her account of the communication, or the institution of proceedings for professional negligence against a lawyer, in which the lawyer's evidence as to advice given to the client will be received.
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. Thus, in Benecke v National Australia Bank , the client was held to have waived privilege by giving evidence, in legal proceedings, concerning her instructions to a barrister in related proceedings, even though she apparently believed she could prevent the barrister from giving the barrister's version of those instructions. She did not subjectively intend to abandon the privilege. She may not even have turned her mind to the question. However, her intentional act was inconsistent with the maintenance of the confidentiality of the communication. 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.