Gavin Costelloe provides insights on EB-5 program at Greenberg Traurig.

Gavin Costelloe, a distinguished member of Greenberg Traurig’s White Collar Defense & Special Investigations Practice in London, brings a wealth of experience to the table. Costelloe’s background includes serving as a lawyer and prosecutor for the UK’s Serious Fraud Office (SFO). His primary focus lies in advising companies and individuals on a wide range of internal, governmental, and regulatory investigations. These investigations touch upon crucial issues such as compliance with the UK Bribery Act, fraud, market manipulation, anti-money laundering, economic sanctions, and other intricate cross-jurisdictional matters.

One area where Gavin shines is in providing diligent support for mergers, acquisitions, and investments, particularly in jurisdictions with high levels of corruption risk. His expertise in business crime investigation, defense, compliance, and risk mitigation has been invaluable to clients facing complex legal challenges.

In addition to his investigative work, Gavin also plays a pivotal role in devising and implementing internal training and compliance programs for companies. His proactive approach to assisting organizations with compliance not only helps them navigate legal pitfalls but also ensures they are well-prepared to handle any potential regulatory issues that may arise.

A key highlight of recent developments in the realm of economic sanctions enforcement has been the collaboration between the U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) and the UK’s Office of Financial Sanctions Implementation (OFSI). This joint effort, initiated on January 13, 2025, marks a significant step towards reinforcing the partnership between the United States and the United Kingdom in combatting financial crimes and enforcing sanctions.

The cooperation between OFAC and OFSI is crucial in promoting global financial stability and ensuring that sanctions are effectively enforced across borders. By memorializing their commitment to working together, the U.S. and the UK demonstrate a united front against illicit financial activities that threaten the integrity of the international financial system.

The collaboration between the Participants is not just about enforcement but also about sharing best practices, intelligence, and resources to enhance the effectiveness of sanctions regimes. This exchange of information and expertise is essential in addressing evolving threats in the financial landscape and staying ahead of sophisticated financial crimes.

As the economic landscape continues to evolve, the cooperation between the U.S. and UK authorities sets a positive precedent for international collaboration in combating financial crimes and preserving the integrity of the global financial system. The joint efforts of OFAC and OFSI serve as a beacon of hope in the fight against illicit financial activities and underscore the importance of transnational cooperation in maintaining financial stability and security.