Zhang Zhencheng v Tan Huay Lim and another [2026] SGHC 4

Case Details

• Citation: [2026] SGHC 4
• Court: General Division of the High Court of the Republic of Singapore
• Decision Date: 7 January 2026
• Coram: Chua Lee Ming J
• Case Number: Originating Claim No 325 of 2023 (Registrar’s Appeal No 180 of 2025)
• Hearing Date(s): 24 October 2025
• Claimants / Plaintiffs: Zhang Zhencheng
• Respondent / Defendant: (1) Tan Huay Lim; (2) Dasin Retail Trust Management Pte Ltd
• Counsel for Claimant: Ooi Huey Hien and Ng Li Yang Jervis (LVM Law Chambers LLC)
• Counsel for First Defendant: Ng Lip Chih (NLC Law Asia LLC)
• Counsel for Second Defendant: Suraj Lingaraj Bagalkoti and Shawn Ang De Xian (WongPartnership LLP)
• Practice Areas: Civil Procedure; Privileges; Legal professional privilege; Waiver

Summary

The decision in Zhang Zhencheng v Tan Huay Lim and another [2026] SGHC 4 provides a definitive exploration of the boundaries of legal professional privilege, specifically addressing the circumstances under which a party may withdraw a previously communicated waiver of privilege. The dispute arose within the context of an oppression claim brought by the claimant, a minority shareholder and director, against the first defendant (the Lead Independent Director) and the second defendant (the trustee-manager of a listed business trust). The central procedural conflict concerned the production of documents that the second defendant’s former solicitors had initially agreed to disclose but which its successor solicitors subsequently claimed were privileged.

The High Court was tasked with determining whether a waiver of privilege, once communicated to an opposing party, is irrevocable or whether it can be rescinded before the privileged material is actually inspected or deployed in legal proceedings. This issue is of paramount importance to practitioners, as it touches upon the finality of legal correspondence and the sanctity of the solicitor-client relationship when legal representation changes mid-stream. The claimant argued that the second defendant’s prior agreement to produce the documents constituted a "true waiver" or an election that could not be unilaterally retracted. Conversely, the second defendant maintained that privilege is a substantive right that remains intact until the "point of no return"—the actual disclosure or use of the documents.

Chua Lee Ming J, presiding, affirmed the decision of the Assistant Registrar, holding that a party is generally entitled to change its position and assert privilege over documents even after an initial waiver has been communicated, provided the documents have not yet been disclosed to the other party or used in court. The judgment clarifies that the "high bar" for express waiver in Singapore law requires a voluntary, informed, and unequivocal election. Where a party receives new legal advice and realizes that its previous stance was based on an incomplete understanding of its rights, the court will prioritize the protection of privilege over the mere enforcement of a prior statement of intent, absent any detrimental reliance or unfairness that would trigger an implied waiver.

Furthermore, the case addresses the "Shareholder Rule" and the doctrine of joint interest privilege. The claimant sought to bypass the claim of privilege by asserting a joint interest in the legal advice sought by the second defendant. The court’s analysis of this issue reinforces the principle that joint interest privilege does not extend to communications made in the context of adversarial proceedings between the parties, even if those parties share a corporate relationship. This decision serves as a critical reminder that the existence of a common interest at a general level does not override the protection of privilege when the parties’ interests have diverged into active litigation.

Timeline of Events

1. 15 November 2024: The claimant’s solicitors, LVM Law Chambers LLC (“LVMLC”), issued a formal request to the first defendant for “[a]ll documents and correspondence” related to the second defendant’s affairs, specifically targeting communications with Rajah & Tann LLP (“R&T”).
2. 20 December 2024: The second defendant’s then-solicitors, Shook Lin & Bok LLC (“SLB”), responded to LVMLC. In this correspondence, SLB stated that the second defendant was agreeable to producing the Requested Documents to the extent they pertained to the restructuring of Dasin Retail Trust (“DRT”), asserting that the claimant had a “joint interest” in the privilege.
3. 28 March 2025: The second defendant formally changed its legal representation, appointing WongPartnership LLP (“WongP”) in place of SLB.
4. 9 April 2025: WongP, acting for the second defendant, communicated a change in position. They asserted that the second defendant would now claim privilege over 12 specific categories of documents, effectively withdrawing the consent previously given by SLB.
5. 14 May 2025: The claimant filed an application for the production of the documents, challenging the second defendant's right to retract its waiver.
6. 19 May 2025: The second defendant filed its response, maintaining the claim of privilege over the disputed categories.
7. 1 July 2025: A moratorium under s 64(1) of the Insolvency, Restructuring and Dissolution Act 2018 (2020 Rev Ed) was in effect, impacting the procedural timeline.
8. 13 July 2025: The moratorium under the Insolvency, Restructuring and Dissolution Act 2018 expired.
9. 15 July 2025: NLC Law Asia LLC (solicitors for the first defendant) sent responsive documents that were in the first defendant's possession to WongP for review.
10. 29 July 2025: WongP provided the claimant with a list of documents over which privilege was claimed (the "Privilege List").
11. 8 August 2025: The claimant filed the appeal (RA 180/2025) against the Assistant Registrar’s decision to dismiss the application for production.
12. 24 October 2025: The substantive hearing of the appeal took place before Chua Lee Ming J.
13. 7 January 2026: The High Court delivered its judgment, dismissing the claimant's appeal.

What Were the Facts of This Case?

The claimant, Zhang Zhencheng, is a minority shareholder and a non-executive director of the second defendant, Dasin Retail Trust Management Pte Ltd. The second defendant serves as the trustee-manager of Dasin Retail Trust (“DRT”), a business trust listed on the Singapore Exchange (“SGX”). The first defendant, Tan Huay Lim, held the position of Lead Independent Director of the second defendant. The underlying litigation (Originating Claim No 325 of 2023) involved allegations by the claimant that the first defendant had conducted the affairs of the second defendant and/or DRT in an oppressive manner, prejudicial to the claimant’s interests.

A primary factual grievance raised by the claimant concerned the first defendant’s conduct in advocating for and supporting a memorandum of understanding (“MOU”) regarding the acquisition of an interest in DRT by a third party. The claimant alleged that the terms of this MOU were adverse to both his interests and the interests of the second defendant and DRT. In the course of the litigation, the claimant sought discovery of various documents to support these allegations, specifically focusing on communications between the first defendant and the second defendant’s legal advisors.

On 15 November 2024, the claimant’s solicitors (LVMLC) requested from the first defendant all documents and correspondence between him and the second defendant’s lawyers, R&T. The first defendant’s solicitors (NLC) initially resisted this, claiming the documents were privileged. However, the second defendant’s solicitors at the time (SLB) took a different view. In a letter dated 20 December 2024, SLB informed LVMLC that the second defendant was "agreeable to produce" the documents to the extent they related to the restructuring of DRT. SLB’s stated rationale was that the claimant, as a director and shareholder, shared a "joint interest" in the second defendant’s privilege. This communication appeared to be a clear waiver of privilege over the specified documents.

The situation shifted significantly when the second defendant replaced SLB with WongP on 28 March 2025. Following a review of the matter, WongP advised the second defendant that it was entitled to maintain privilege over the documents. On 9 April 2025, WongP informed the claimant that the second defendant would not produce 12 categories of documents (the "Category 12 Documents"), asserting legal professional privilege. These categories included documents relating to the MOU, the restructuring of DRT, and other sensitive internal matters where the second defendant now perceived a conflict of interest between itself and the claimant.

The claimant contended that the second defendant was bound by the waiver communicated through SLB. He argued that the SLB letter constituted a "true waiver" or an irrevocable election. He further argued that even if there was no express waiver, an implied waiver had occurred because the second defendant had behaved in a manner inconsistent with the maintenance of privilege. Additionally, the claimant relied on the "Shareholder Rule" and the doctrine of joint interest, arguing that as a director and shareholder, he was entitled to see legal advice obtained by the company (the second defendant) as it was obtained for the benefit of the company as a whole.

The first defendant took a neutral stance on the privilege issue, agreeing to produce the documents in his possession only if the second defendant waived its privilege or if the court ordered production. The second defendant, however, vigorously defended its claim of privilege, arguing that it had the right to correct its position before any actual disclosure had occurred. The dispute thus centered on the procedural and substantive limits of waiving and reclaiming legal professional privilege in the face of changing legal strategy and representation.

What Were the Key Legal Issues?

The appeal turned on four primary legal issues, each involving the application of the law of privilege to the shifting positions taken by the second defendant’s solicitors:

• Whether the second defendant could withdraw its previous waiver: The court had to decide if the second defendant was permitted, based on the advice of its new solicitors (WongP), to claim legal privilege over documents that its former solicitors (SLB) had previously agreed to produce. This involved determining the "point of no return" for a waiver of privilege.
• Whether there was an express "true waiver": The claimant argued that the SLB letter of 20 December 2024 constituted a "true waiver" under the principles set out in Mohammed v Ministry of Defence [2013] EWHC 4478 (QB). The court needed to determine if the communication of an intent to produce documents was sufficient to extinguish privilege immediately.
• Whether there was an implied waiver: The court examined whether the second defendant’s conduct—specifically the delay between the SLB letter and the WongP retraction—amounted to an implied waiver of privilege due to inconsistency or unfairness to the claimant.
• The application of Joint Interest and the "Shareholder Rule": The claimant asserted that he was entitled to the documents regardless of waiver, based on his status as a shareholder and director. The court had to analyze whether the "Shareholder Rule" (as discussed in Sharp v Blank [2015] EWHC 2681 (Ch)) applied in the context of an oppression claim where the parties' interests were clearly adverse.

How Did the Court Analyse the Issues?

Chua Lee Ming J began the analysis by addressing the nature of the waiver communicated by SLB. The claimant relied heavily on Mohammed v Ministry of Defence [2013] EWHC 4478 (QB) at [14(i)], which defines a "true waiver" as occurring when a party "either expressly consents to the use of privileged material by another party or chooses to disclose the information to the other party in circumstances which imply consent to its use." The claimant argued that the 20 December 2024 letter was such an express consent.

However, the Court distinguished between an expression of intent to waive and the actual act of waiver. The Court noted that in Singapore, the bar for express waiver is high. Citing Rahimah bte Mohd Salim v Public Prosecutor [2016] 5 SLR 1259, the Court emphasized that an express waiver requires a "voluntary, informed and unequivocal election" (at [23]). Chua J found that the SLB letter did not meet this threshold because the second defendant had not yet disclosed the documents. The Court held:

"I agreed with the AR that it was open to the second defendant to change its position and claim privilege, as long as the documents had not been disclosed or used." (at [25])

The Court reasoned that privilege is a substantive right, not merely a procedural one. Until the documents are inspected by the opposing party or used in a court proceeding, the party holding the privilege retains the right to assert it, even if they previously indicated they would not. This is particularly true when a party changes solicitors and receives different legal advice regarding the privileged status of the documents. The Court observed that the claimant had not suffered any prejudice that could not be remedied, as he had not yet seen the documents.

Regarding implied waiver, the Court referred to ARX v Comptroller of Income Tax [2016] 5 SLR 590. Implied waiver typically arises where a party’s conduct is inconsistent with the maintenance of confidentiality, making it unfair to allow the party to continue asserting privilege. The claimant argued that the second defendant’s delay in asserting privilege (from December 2024 to April 2025) was inconsistent conduct. The Court rejected this, noting that the second defendant had not actually produced any of the Category 12 Documents. Without disclosure, there was no inconsistency that would make the subsequent claim of privilege unfair. The Court also cited Motorola Solutions Credit Co LLC v Kemal Uzan [2015] SGHC 228 at [16] and [22], noting that the mere mention of privileged documents in correspondence does not necessarily waive privilege over the documents themselves.

The most complex part of the analysis concerned joint interest privilege and the "Shareholder Rule". The claimant argued that as a director and shareholder, he had a joint interest in the legal advice sought by the second defendant from R&T. He relied on Sharp v Blank [2015] EWHC 2681 (Ch), which suggests that shareholders have a right to see legal advice obtained by a company unless that advice was obtained for the purpose of litigation between the company and the shareholders. This is often referred to as the "Shareholder Rule."

Chua J examined the limits of this rule. He noted that joint interest privilege exists where two or more parties have a joint interest in the subject matter of the communication at the time it was made. However, this privilege does not apply if the parties' interests were adverse at the time of the communication. The Court cited CIFG Special Assets Capital I Ltd v Polimet Pte Ltd [2016] 1 SLR 1382 at [74], which confirms that joint interest privilege cannot be invoked against a party with whom one is in dispute regarding the very subject of the advice.

The Court found that the Category 12 Documents related to matters where the claimant and the second defendant were in an adversarial position—specifically the MOU and the restructuring of DRT, which were the subjects of the claimant's oppression allegations. The Court agreed with the reasoning in academic commentary (Jardine and Ziegler, "Disclosure of Privileged Documents to Shareholders as an Application of Joint Interest Privilege" (2020) 32 SAcLJ 36) that the Shareholder Rule is an extension of joint interest principles and is subject to the same limitations regarding adverse interests. Because the claimant was suing the second defendant for oppression related to these very topics, the joint interest was severed. Consequently, the claimant could not use his status as a director or shareholder to override the second defendant's claim of privilege.

What Was the Outcome?

The High Court dismissed the claimant's appeal in its entirety. The Court upheld the Assistant Registrar's decision that the second defendant was entitled to claim legal professional privilege over the Category 12 Documents, notwithstanding the earlier communication from SLB expressing an intention to produce them.

The Court's orders were as follows:

• The claimant’s application for the production of the Category 12 Documents was dismissed.
• The second defendant was confirmed to have successfully asserted privilege over the documents listed in its Privilege List provided by WongP.
• The first defendant was not required to produce any documents in his possession that fell within the scope of the second defendant's valid claim of privilege.

The operative conclusion of the judgment was stated succinctly by the Court:

"For the foregoing reasons, I dismissed the claimant’s appeal." (at [65])

In terms of costs, the Court followed the general principle that costs follow the event. Having failed in the appeal, the claimant was liable for the costs of the second defendant. The judgment did not specify the exact quantum of costs, which would typically be assessed or agreed upon between the parties following the dismissal of the appeal. The dismissal of the appeal meant that the claimant would have to proceed with his oppression claim without access to the specific communications between the defendants and R&T that the second defendant had successfully shielded via privilege.

Why Does This Case Matter?

The judgment in Zhang Zhencheng v Tan Huay Lim is a significant contribution to Singapore's jurisprudence on legal professional privilege for several reasons. First, it provides much-needed clarity on the revocability of a waiver. Practitioners often face situations where a client or a previous solicitor has made a statement regarding the disclosure of documents that, upon further review, is found to be detrimental or legally incorrect. This case establishes that such a statement is not an "irrevocable trap." As long as the documents have not been disclosed or used in court, a party can correct its position. This protects the substantive right of privilege and ensures that parties are not unduly penalized for initial procedural concessions made before full legal advice is obtained.

Second, the case reinforces the "high bar" for express waiver in Singapore. By requiring a "voluntary, informed and unequivocal election," the court ensures that privilege—a fundamental pillar of the legal system—is not lost through inadvertence or preliminary correspondence. This aligns with the Court of Appeal's earlier guidance in Rahimah bte Mohd Salim and provides a consistent framework for lower courts and practitioners to follow.

Third, the decision clarifies the application of the "Shareholder Rule" and joint interest privilege in the corporate context. While shareholders and directors generally have a right to access company information, this case confirms that such rights are not absolute and do not override legal professional privilege when the parties are in an adversarial relationship. This is particularly relevant for oppression claims under the Companies Act. The court’s adoption of the "adverse interest" exception to the Shareholder Rule provides a clear boundary: once a shareholder or director takes an adversarial stance against the company (or its management) regarding a specific matter, they can no longer claim a "joint interest" in the legal advice the company receives on that matter.

Fourth, the case highlights the procedural importance of the "point of no return." By identifying actual disclosure or use in court as the threshold for irrevocability, the judgment provides a bright-line rule that offers certainty to litigants. It prevents "satellite litigation" over whether a letter of intent should be treated as a binding contract to waive privilege, focusing instead on whether the confidentiality of the documents has actually been breached.

Finally, for practitioners, the case underscores the risks of changing legal representation mid-litigation. A new firm will inevitably review the previous firm's positions, and while Zhang Zhencheng allows for the correction of mistakes regarding privilege, such shifts in strategy can lead to costly and time-consuming interlocutory battles. The judgment serves as a reminder to counsel to be extremely cautious when communicating an intent to waive privilege, as even if it can be retracted, the resulting dispute can significantly delay the substantive progress of the case.

Practice Pointers

• Caution in Correspondence: Solicitors should be extremely careful when stating that a client is "agreeable to produce" documents. Even though such a statement may be retractable before disclosure, it can trigger expensive interlocutory applications and appeals. Use qualifying language if the review of privilege is still ongoing.
• The "Point of No Return": Remember that once a privileged document is inspected by the other side or referred to in a court hearing/affidavit to support a legal argument, the waiver likely becomes irrevocable. The window for retraction closes at the moment of disclosure or use.
• Successor Counsel Review: When taking over a file from another firm, conduct an immediate and thorough audit of all previous correspondence regarding discovery and privilege. If a previous waiver was made in error, communicate the retraction as early as possible to minimize arguments of implied waiver or detrimental reliance.
• Adversarial Interests in Joint Privilege: When representing a company in a dispute with a director or shareholder, identify the exact point in time when their interests became adverse. Legal advice sought after this point is likely protected by privilege and cannot be accessed via the "Shareholder Rule" or joint interest doctrines.
• Documenting the Claim: When asserting privilege after a previous waiver has been retracted, ensure the Privilege List is detailed and clearly categorizes the documents. This helps the court understand the basis of the claim and why the documents are sensitive, especially in the context of an oppression claim.
• Moratorium Impacts: Be aware of how statutory moratoriums (such as those under the IRDA) affect procedural timelines for document production. A delay in production caused by a moratorium does not, in itself, constitute an implied waiver of privilege.

Subsequent Treatment

As a relatively recent decision from early 2026, Zhang Zhencheng v Tan Huay Lim [2026] SGHC 4 stands as a current and authoritative statement on the revocability of privilege waivers in Singapore. It follows the trajectory of earlier High Court and Court of Appeal decisions that emphasize the substantive nature of privilege. It is expected to be frequently cited in interlocutory disputes where a party seeks to "claw back" privileged material or where directors/shareholders seek discovery of corporate legal advice in the context of internal disputes. The case effectively bridges the gap between English authorities like Mohammed v Ministry of Defence and the specific "high bar" requirements of Singapore law.

Legislation Referenced

• Insolvency, Restructuring and Dissolution Act 2018 (2020 Rev Ed), s 64(1)
• Dissolution Act 2018

Cases Cited

• Relied on:
  • Mohammed v Ministry of Defence [2013] EWHC 4478 (QB)
• Referred to:
  • Motorola Solutions Credit Co LLC v Kemal Uzan [2015] SGHC 228
  • Rahimah bte Mohd Salim v Public Prosecutor [2016] 5 SLR 1259
  • ARX v Comptroller of Income Tax [2016] 5 SLR 590
  • CIFG Special Assets Capital I Ltd v Polimet Pte Ltd [2016] 1 SLR 1382
  • Lufti Salim bin Talib v British and Malayan Trustees Ltd [2024] 5 SLR 86
  • Love v Fawcett [2011] EWHC 1686 (Ch)
  • Sharp v Blank [2015] EWHC 2681 (Ch)

Source Documents

• Original Judgment PDF (eLitigation)
• Case Page on eLitigation