Gavin Costelloe

Senior Associate
Organization Profile
Professional Biography

Gavin Costelloe is a senior associate in Greenberg Traurig’s White Collar Defense & Special Investigations Practice in London. Gavin is a former lawyer and prosecutor for the UK’s Serious Fraud Office (SFO). Gavin advises companies and individuals on internal, government and regulatory investigations and compliance issues related to the UK Bribery Act, fraud, market manipulation, anti-money laundering, economic sanctions, and other serious and complex cross-jurisdictional matters. Gavin has considerable experience assisting with diligence for mergers, acquisitions, and other investments including in jurisdictions with high corruption risk.

Gavin’s practice is focused on business crime investigation, defence, compliance, and risk mitigation. This includes assisting companies with internal, government, and regulatory investigations (including those conducted by the SFO, Her Majesty’s Revenue & Customs (HMRC), the Crown Prosecution Service (CPS) and the Competition and Markets Authority (CMA)), individual defence for senior executives and compliance professionals, and devising and implementing internal training and compliance progammes.

Gavin is experienced in liaising with overseas law enforcement including the U.S. Department of Justice (DOJ), the Commodity Futures Trading Commission (CFTC), the Securities & Exchange Commission (SEC), and the Swiss Office of the Attorney General (OAG), as well domestic UK law enforcement, in relation to parallel investigations.

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