UK trader sues BitMEX for 324.8 BTC over alleged unauthorized crypto derivatives
Lewis Barber, a British IT engineer, filed a London High Court claim against HDR Global Trading, the Seychelles-based owner of BitMEX, seeking 324.8 BTC worth about $26.5 million as of October 14, 2026. The claim concerns 1,053 losing perpetual swap trades among roughly 2,294 transactions made through five accounts between 2018 and 2022. Barber alleges BitMEX offered crypto derivatives to UK clients without required authorization, while BitMEX disputes the service and the outcome could affect other UK traders.
Barber, a Chelford, Cheshire IT engineer, used five accounts for roughly 2,294 transactions from 2018 to 2022. His London High Court claim against HDR Global Trading Limited, BitMEX’s Seychelles-registered owner, concerns only 1,053 losing perpetual swaps. He seeks 324.8 BTC or equivalent damages.
His lawyers invoke the Financial Services and Markets Act 2000, saying BitMEX lacked FCA permission for UK regulated activity. They cite a March 2020 FCA warning and a January 2019 Times ad. Seladore Legal sought cancellation in December 2025; BitMEX contests service.
The dispute may affect UK retail traders who used similar crypto derivatives, as a ruling could clarify whether unauthorized contracts are enforceable or refundable. It could also push exchanges to restrict UK access or strengthen compliance, potentially narrowing product choices. Regulators and courts may face greater scrutiny over cross-border enforcement, while other claimants might be encouraged to pursue comparable cases. The broader market impact may depend on how the court treats service, authorization, and restitution.