UK Accounting Watchdog Opens Formal Probe Into EY’s Audit of Shell Over Potential Rule Breaches
Financial Reporting Council investigates whether audit partner rotation rules were violated in the 2024 audit of the energy giant
Britain’s top accounting regulator has launched a formal investigation into Ernst & Young LLP’s audit of Shell’s financial statements amid concerns that the firm may have breached ethical and audit partner rotation standards intended to safeguard auditor independence.
The Financial Reporting Council confirmed that its Enforcement division is examining whether EY failed to comply with rotation requirements in conducting the audit for the year ended December 31, 2024, a matter that was self-reported by the firm earlier this year.
Shell disclosed in July that EY had identified non-compliance with both UK and U.S. partner rotation rules, which set strict limits on how long a lead or key audit partner can serve on an engagement.
EY notified Shell that its lead audit partner had exceeded the permitted time under these standards, prompting the reassignment of a new partner to re-issue U.S. audit opinions for 2023 and 2024. Although Shell’s audited financial statements themselves remain unchanged and EY’s opinions remain unqualified, the potential infringement of rotational protocols triggered regulatory scrutiny.
The FRC’s investigation will assess whether relevant ethical and professional requirements were breached.
The probe adds to a series of challenges for EY, the global “Big Four” accounting network, which is already the subject of multiple ongoing investigations by the FRC into audit practice issues, including unauthorised issuance of auditors’ reports and prior breaches of independence rules.
EY has responded to the latest inquiry by emphasising its cooperation and commitment to compliance throughout the process.
Rotation rules are designed to maintain auditor objectivity by limiting how long the same individuals can lead audits of major companies, thereby preventing overly close relationships that could undermine independence.
Shell has explained that, following EY’s report of the issue, a new lead audit partner reviewed the work and concluded that no amendments to the underlying financial information were necessary, underscoring that the potential breach concerned procedural compliance rather than financial accuracy.
The regulator’s formal investigation reflects heightened oversight of audit quality and standards in the UK as authorities seek to reinforce trust in corporate reporting.
Depending on its findings, the FRC could impose significant sanctions if it concludes that EY’s conduct failed to meet the regulatory obligations for audit independence and ethical practice.
EY has affirmed that it will continue to fully cooperate with the watchdog as the review unfolds, while Shell has reiterated that its published financial results stand as issued.