Bitmex Faces $26M Claim Over 1,053 Losing Bitcoin Trades

British Trader Demands $26 Million Over Bitmex Losses

A software engineer from the United Kingdom is taking legal action against the parent company behind Bitmex. He claims the crypto exchange had no legal authority to offer him derivatives products in Britain.

Lewis Barber, who lives in Chelford, Cheshire, filed a claim in the High Court in London against HDR Global Trading Limited. That Seychelles-based firm is the corporate entity behind Bitmex. Barber is demanding 324.8 Bitcoin (BTCBTC-1.53%) back, which is worth around $26.5 million at recent market rates of $81,516 per Bitcoin. He is asking for his original Bitcoin back or equivalent financial damages plus interest.

Over 1,000 Disputed Perpetual Swap Trades

According to reports by The Guardian and The Mirror, Barber was far from a casual user. Between 2018 and 2022, he operated across five separate accounts and placed about 2,294 total trades.

However, his court case focuses specifically on 1,053 positions that lost money. Every single disputed transaction involved perpetual swaps.

Perpetual swaps are financial derivatives that let traders bet on crypto prices without an expiration date. Bitmex pioneered these contracts, which eventually became the most heavily traded financial instruments in the crypto industry.

Trading crypto derivatives involves significant risk due to market volatility. Past performance of digital assets is not a guarantee of future results.

FCA Warnings and the UK Legal Basis

Barber's legal argument centers on the UK's Financial Services and Markets Act 2000 (FSMA). His legal team argues that Bitmex carried out regulated financial activities without authorization from the Financial Conduct Authority (FCA).

Because Bitmex lacked this authorization, Barber claims his trading contracts should be legally unenforceable. His lawyers also allege deceit, negligent misrepresentation, and mistake.

• FCA Warning: On March 3, 2020, the FCA issued a public warning stating Bitmex was operating in the UK without approval.
• UK Marketing: The lawsuit highlights UK advertising campaigns, such as a major advertisement in The Times in January 2019.
• Formal Notice: Barber's lawyers at Seladore Legal formally asked to unwind the transactions back in December 2025.

Gareth Keillor, a partner at Seladore Legal, pointed out that this case could have broader consequences. Other British traders who entered similar contracts might have grounds to challenge their losses, though any potential recovery would depend on individual circumstances.

Bitmex's Response and Exchange Background

There is an important procedural step still pending in this lawsuit. While the claim was filed in London, it has not yet been formally served on the defendant.

No such claim has been served on HDR Global Trading Limited.

That statement was provided by a Bitmex spokesperson to Daniel Boffey, chief reporter for The Guardian.

Bitmex was founded in 2014 by crypto entrepreneurs Arthur Hayes, Ben Delo, and Samuel Reed. While the exchange popularized derivative trading globally, it later faced strict regulatory issues in the United States. On September 23, 2026, Bitmex shut down trading operations following a strategic business review, while keeping customer withdrawals active.

No court hearing date has been scheduled yet for Barber's case, and his allegations remain unproven in court. If judges side with Barber, it could set a major legal precedent for UK crypto traders seeking refunds on historical trading losses.

Arthur Hayes on Bitcoin Price and Strategy

Bitmex co-founder Arthur Hayes remains an active commentator in the market. He recently suggested that MicroStrategy and Michael Saylor no longer move crypto market sentiment as strongly as they once did.

Hayes has also discussed hypothetical scenarios where Bitcoin reaches $1 million long-term. Analysts emphasize that such targets depend on radical global economic shifts and sustained liquidity. Because crypto assets are volatile, prices can fall just as quickly as they rise depending on broader macroeconomic conditions.