Lewis Barber, a UK software engineer, has filed a claim in London's Commercial Court against HDR Global Trading, the operator of BitMEX, seeking the return of 324.8 Bitcoin. The claim alleges that BitMEX conducted regulated derivative activities with Barber without authorization from the Financial Conduct Authority (FCA). According to the particulars of claim reviewed by Decrypt and reported by The Guardian, the Bitcoin was valued at £20.4 million on October 1, approximately $27.2 million based on exchange rates cited in the filing.

Barber entered into roughly 2,294 trades on the platform between 2018 and 2022 across five accounts. The lawsuit challenges 1,053 of these trades, all of which were perpetual swaps, arguing they constitute regulated activities under the Financial Services and Markets Act 2000. Because BitMEX lacked FCA authorization, the claim asserts these contracts are unenforceable against Barber. Additionally, Barber seeks damages for deceit, alleging BitMEX knowingly represented itself as authorized to trade lawfully in the UK.

The claim highlights that BitMEX did not restrict access from the UK, allowed users to select it as their country of residence, and ran global promotional campaigns, including an advertisement in The Times in January 2019. It also references an FCA warning from March 2020 stating BitMEX may have been trading regulated investments without authorization. Although the claim has been filed, it has not yet been formally served on HDR Global Trading. A BitMEX spokesperson stated no such claim had been served. This legal action follows BitMEX’s shutdown in September and coincides with other regulatory issues, including a proposed class action in New York and previous guilty pleas by co-founders regarding Bank Secrecy Act violations.