Matthews v SPI Electricity Pty Ltd (No 8)

Matthews, a plaintiff in a class action proceeding, sought subpoenas to compel the production of documents from SPI Electricity Pty Ltd and its independent experts. The dispute centred around the admissibility of these documents, particularly whether they were subject to client legal privilege and whether the privilege was waived by the delivery of the experts' final reports. The case was heard in the Supreme Court of Victoria, where the court was tasked with determining the extent of client legal privilege and the impact, if any, of delivering draft expert reports to the defendant's solicitors.

The central legal issues revolved around the application of client legal privilege to the documentary communications between the experts and the solicitors. Matthews argued that the privilege did not extend to the final reports because they were delivered to the defendant's solicitors. SPI Electricity contended that the privilege applied to all documents exchanged between the experts and its solicitors, and that the delivery of the draft reports did not constitute a waiver of privilege. The court had to determine whether the delivery of the draft reports influenced or underpinned the final reports, and whether this influenced the admissibility of the final reports.

The court examined the relationship between the experts and SPI Electricity, finding that the experts were engaged to provide professional legal services in relation to the group proceeding. The court held that the draft reports were prepared for the purpose of obtaining professional legal services, and thus were subject to client legal privilege. However, the court found that the delivery of the draft reports did not constitute a waiver of privilege, as the privilege was not waived by mere delivery but rather by express statements within the reports themselves. The court held that the final reports did not rely on or incorporate the draft reports, and thus the privilege was not waived. The court found that the documents were inadmissible unless the plaintiff could establish that they were relevant to a matter within the scope of the proceeding.

The court ordered that the subpoenas be set aside, and that the documents in question remain subject to client legal privilege, barring any express waiver within the documents themselves. Matthews was required to demonstrate that the documents were relevant to a matter within the scope of the proceeding before they could be disclosed. The court's decision emphasised the importance of explicit waiver of privilege and the distinction between draft and final expert reports in determining the admissibility of documents subject to client legal privilege.