Harry Dimoulis is a commercial disputes partner recognized for his leading work on complex, cross-border litigation and collective actions. He is frequently instructed on high-value claims, including competition class actions, securities and investor disputes, and has acted before the High Court, Court of Appeal, and Competition Appeal Tribunal, as well as in regulatory investigations in England & Wales and Hong Kong SAR.
His experience includes advising on contractual, financial and investment-related disputes, along with claims brought under the UK’s collective redress regimes, including competition collective actions, securities and bondholder claims and mass torts. Harry also regularly leads sensitive investigations for financial institutions, particularly internal reviews concerning senior executive conduct and governance.
Known for shaping strategy in large-scale matters involving intricate factual, regulatory and economic issues, Harry routinely steers disputes spanning multiple jurisdictions, expert disciplines and regulators. Drawing on years of operational leadership, he understands how high-stakes disputes intersect with governance, risk and commercial strategy. This perspective enables him to develop litigation approaches that are legally robust, commercially grounded and aligned with clients’ wider objectives—whether in the context of large-scale group claims or strategic, single-party disputes.
Harry is qualified to practice in England & Wales and Hong Kong SAR. Having spent a substantial period practising in Hong Kong SAR, Harry has deep regional experience and maintains a strong interest in Asia-related disputes.
Financial Services
Technology
Class Action & Complex Litigation
Harry Dimoulis is a commercial disputes partner recognized for his leading work on complex, cross-border litigation and collective actions. He is frequently instructed on high-value claims, including competition class actions, securities and investor disputes, and has acted before the High Court, Court of Appeal, and Competition Appeal Tribunal, as well as in regulatory investigations in England & Wales and Hong Kong SAR.
His experience includes advising on contractual, financial and investment-related disputes, along with claims brought under the UK’s collective redress regimes, including competition collective actions, securities and bondholder claims and mass torts. Harry also regularly leads sensitive investigations for financial institutions, particularly internal reviews concerning senior executive conduct and governance.
Known for shaping strategy in large-scale matters involving intricate factual, regulatory and economic issues, Harry routinely steers disputes spanning multiple jurisdictions, expert disciplines and regulators. Drawing on years of operational leadership, he understands how high-stakes disputes intersect with governance, risk and commercial strategy. This perspective enables him to develop litigation approaches that are legally robust, commercially grounded and aligned with clients’ wider objectives—whether in the context of large-scale group claims or strategic, single-party disputes.
Harry is qualified to practice in England & Wales and Hong Kong SAR. Having spent a substantial period practising in Hong Kong SAR, Harry has deep regional experience and maintains a strong interest in Asia-related disputes.
