Brandon O'Neil
Partner
London

Brandon O'Neil
Partner
London
Contact Details
Brandon focuses on complex cross-border regulatory investigations, financial crime matters and litigation, with particular experience representing financial institutions. He advises clients on a broad range of issues such as insider trading, anti-money laundering, asset tracing and judgment enforcement, fraud and bribery.
Brandon represents both institutions and individuals in cross-border investigations involving a range of regulators in the U.S. (DOJ, SEC, CFTC), Europe (UK FCA, SFO) and Asia. He has particular expertise in investigations involving insider trading, money laundering, market manipulation, bribery and fraud. In addition to England and Wales, Brandon is admitted to the Bar of the State of New York and worked for a number of years in A&O’s New York office. Given the critical importance of U.S. law in contentious regulatory investigations and the far-reaching impact of U.S. authority-led investigations, this dual-experience brings valuable insight and experience to clients when they experience multi-jurisdictional, multi-agency investigations. Brandon also has substantial experience in submitting and defending private criminal complaints in continental European jurisdictions.
Brandon’s litigation practice focuses on cross-border fraud, asset tracing and judgment enforcement matters. Brandon’s dual New York and English qualification, together with his extensive experience litigating in various jurisdictions around the world, brings the cross-border outlook needed to successfully pursue (or defend) complex cases of this type. In addition to experience in such cases in the UK courts, Brandon has represented clients in numerous such enforcement cases across Europe, the U.S., the Caribbean and Asia, seeking to recover a broad range of assets ranging from art to real estate.
Qualifications
Professional
Admitted: Bar of the State of New York, 2009
Admitted: U.S. District Court, Southern District of New York, 2009
Academic
J.D., Columbia Law School, 2008
M.A., University of Wyoming, 2004
B.A., University of Wyoming, Phi Beta Kappa, 1999
Related articles

Blog Post: 19 April 2023
New UK 'failure to prevent' fraud corporate criminal offence published
The UK Government has published a draft ‘failure to prevent fraud’ corporate criminal offence rendering large companies liable for fraud committed by their associates. We consider the draft offence…
Publications: 03 March 2023
An expansion of the corporate criminal liability net: the new “failure to prevent” criminal offence
Publications: 22 February 2023
Direct access: data gathering in U.S./UK criminal investigations

Qualifications
Professional
Admitted: Bar of the State of New York, 2009
Admitted: U.S. District Court, Southern District of New York, 2009
Academic
J.D., Columbia Law School, 2008
M.A., University of Wyoming, 2004
B.A., University of Wyoming, Phi Beta Kappa, 1999