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Former UK fraud agency head Green pulled into Hayes' $400m UBS lawsuit

By Martin Coyle and Samuel Rubenfeld ( March 12, 2026, 16:24 GMT | Insight) -- Former UK Serious Fraud Office head David Green has intervened on behalf of UBS in the investment bank’s defense against a $400 million US lawsuit filed by former trader Tom Hayes. “The decision to prosecute Mr. Hayes was made by me as Director of the SFO and could not have been made by UBS or any private party. UBS did not in any way pressure me or the SFO to prosecute Mr. Hayes,” Green said in US court filings.Former UK Serious Fraud Office head David Green has intervened on behalf of UBS in the investment bank’s defense against a $400 million US lawsuit filed by former trader Tom Hayes....

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