High Court Broadens Scope of Legal Advice Privilege

Why It Matters

The broadened privilege reduces disclosure risk for corporations, strengthening confidentiality in internal investigations and strategic planning. It also reshapes how companies manage document workflows, potentially increasing legal costs and influencing litigation strategies.

Key Takeaways

• High Court extends legal‑advice privilege to intra‑client documents
• Privilege applies even if documents never reach a lawyer
• Documents must primarily identify issues for future legal advice
• Ruling narrows gap between lawyer and client working papers
• Shareholder rule on privilege deemed no longer existing

Pulse Analysis

Legal‑advice privilege has long been a cornerstone of attorney‑client confidentiality, but its application has traditionally been limited to communications directly involving a lawyer. The landmark Three Rivers (No 5) decision set a narrow boundary, leaving many internal corporate documents vulnerable to discovery. By revisiting that precedent, the High Court’s ruling in Aabar Holdings v Glencore expands the privilege to any client‑generated material whose dominant purpose is to frame a legal issue, even if the document never reaches counsel. This shift acknowledges the practical reality that preparatory notes, memos, and intra‑team emails often contain the same sensitive analysis as formal lawyer drafts.

For corporations, the decision creates a new layer of protection for internal investigations, risk assessments, and strategic planning. Legal teams will need to reassess document‑retention policies, ensuring that qualifying materials are clearly identified and segregated to preserve privilege. While the broader shield can limit exposure in litigation, it may also compel firms to invest in more rigorous privilege logs and training, potentially raising compliance costs. Moreover, the ruling clarifies that the privilege is not contingent on the document’s transmission to counsel, encouraging proactive documentation of legal concerns without fear of automatic waiver.

The judgment also revives unsettled questions about who qualifies as the “client” for privilege purposes, especially concerning shareholders and subsidiary employees. Although the court sidestepped the shareholder‑rule issue, its dismissal of the rule suggests future Supreme Court scrutiny. Practitioners should monitor forthcoming appellate guidance and consider implementing internal protocols that capture the dominant purpose test, thereby safeguarding privileged material while maintaining operational efficiency.