UK Supreme Court Blocks $3.6 Billion Lawsuit Against Major Banks

In a significant legal triumph, the UK Supreme Court has dismissed a collective lawsuit targeting some of the largest banks globally, linked to foreign exchange practices. Valued at approximately $3.6 billion, this legal action alleged that banks colluded to manipulate currency markets over a decade ago.

Among the banks implicated are JPMorgan, UBS, Citigroup, Barclays, MUFG, and NatWest. They were facing a mass claim on behalf of a multitude of asset managers, pension funds, and financial institutions, asserting they incurred losses from unfair market influences caused by bank traders.

The lawsuit, spearheaded by Phillip Evans, a former official at the UK Competition Markets Authority, drew upon findings from the European Commission. In 2019, the Commission imposed fines exceeding 1 billion euros on several major banks for breaching competition regulations.

The Commission indicated that traders at the involved banks exchanged sensitive data and coordinated their trading maneuvers in online chat groups. These operations transpired between 2007 and 2013, adversely impacting the foreign exchange market, an essential sector in global finance.

To date, banks have already disbursed over $11 billion in penalties to U.S., British, and European regulators in connection with similar allegations. However, the recent UK lawsuit sought to extend these claims by enabling collective legal action for compensation.

The case navigated a complex judicial process. In 2022, the Competition Appeal Tribunal denied its progression as an “opt-out” class action, which would automatically encompass all impacted parties unless they opted out. Subsequently, the Court of Appeal reinstated the case, rejuvenating the claims.

The banks petitioned the UK Supreme Court, which ruled on Thursday in their favor, reinstating the earlier decision that blocked the mass lawsuit from advancing. Consequently, claimants are precluded from pursuing a collective damages claim.

Experts in legal matters suggest that this ruling establishes a challenging precedent for future group lawsuits in the UK, particularly those tied to historical regulatory outcomes. Although banks have avoided entering a costly legal confrontation, the determination has disappointed many investors anticipating restitution.

This outcome underscores the difficulties in converting regulatory penalties into successful collective compensation claims. It further illustrates the complexity and duration of financial litigation, even long after the alleged infractions have occurred.