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UK Court Overturns Convictions of Tom Hayes and Carlo Palombo in Libor Scandal

 |  July 23, 2025

The UK Supreme Court has overturned the criminal convictions of former UBS Group AG trader Tom Hayes and ex-Barclays Plc trader Carlo Palombo, marking a dramatic reversal in one of the most high-profile financial crime cases in recent years. The decision to quash the convictions, which had seen Hayes imprisoned for 11 years and Palombo jailed for four, comes a decade after the scandal that rocked the global financial community.

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    According to Bloomberg, the court ruled on Wednesday that both men’s criminal trials had been mishandled by the judges, who misdirected the juries. The justices concluded that Hayes and Palombo had been unfairly deprived of a fair trial due to “legally inaccurate and unfair” directions given to the juries during their respective cases.

    Hayes, once regarded as a key figure in the Libor manipulation scandal, was convicted in 2015 for his role in attempting to rig the London Interbank Offered Rate (Libor), a key benchmark for interest rates. Palombo, similarly, had been sentenced to four years in prison in 2019 for his involvement in the manipulation of Euribor, the European equivalent of Libor. Both men maintained their innocence throughout the proceedings.

    In the court’s ruling, the justices acknowledged that Hayes was deprived of a fair trial due to these misdirections, which had serious implications for the outcome. The case, which centered on the manipulation of benchmark rates that underpinned over $350 trillion in global loans and securities, was one of the most contentious financial scandals to emerge in the wake of the 2008 financial crisis.

    According to Bloomberg, the scandal had already resulted in severe public backlash against the banking industry and led to global fines exceeding $10 billion for multiple banks and financial institutions. Nine bankers were convicted of fraud offenses in relation to the scandal, with the Serious Fraud Office (SFO) taking the lead in pursuing those responsible.

    The overturning of Hayes and Palombo’s convictions raises important questions regarding the efficacy of the SFO’s efforts in tackling complex financial crimes. The ruling may also pave the way for other rate-rigging convictions to be revisited, potentially impacting the legal standing of other individuals convicted in relation to the manipulation of global benchmark rates.

    Reflecting on the ruling, Hayes spoke to Bloomberg, describing the moment as “strange and surreal.” “I need to sit in a dark room on my own and try and figure out what’s just happened,” he said, acknowledging the long and difficult legal battle that had finally come to an unexpected end.

    Palombo, speaking at a press conference following the decision, expressed his disbelief, claiming, “We were accused of things that didn’t make sense — we were caught up in this Kafka-esque nightmare.” He emphasized that defendants in rate-rigging cases were often portrayed as “dishonest, greedy bankers,” a characterization that he felt had been used to justify their prosecution.

    This ruling also represents a major setback for the SFO, which had invested significant resources into the investigation and prosecution of Libor and Euribor manipulation. In response to the decision, the SFO indicated that it would not pursue a retrial, citing that it would not be in the public interest to do so.

    Hayes, who previously worked at Citigroup Inc. and was described as the “ringmaster” of a global network of traders and brokers involved in the Libor manipulation scheme, has consistently maintained that his actions were not criminal. Following his release from prison in 2021, Hayes has vehemently fought against the stigma attached to the scandal, which continues to cast a long shadow over his career.

    Source: Bloomberg