Lewis Barber Sues BitMEX to Recover 324.8 Bitcoin (BTC) Worth $27.2M

A £20.4 Million Claim in the High Court

Lewis Barber, a software engineer from Chelford in Cheshire, has sued HDR Global Trading, the Seychelles-registered company behind the BitMEX exchange, in London's High Court for the return of 324.8 Bitcoin (BTC). Valued at £20.4 million as of October 1, the claim rises to roughly $27.2 million when priced at the Bitcoin price used in the filing's exchange rates. Barber is not challenging his entire record on the platform. Court particulars describe about 2,294 trades he placed across five accounts between 2018 and 2022, and the action targets only the 1,053 positions that closed at a loss. Each was a perpetual swap, a derivative that lets a trader speculate on price moves without an expiry date, now the dominant form of crypto contract trading and typically operated with leverage in the manner of margin trading.

His solicitors wrote to the exchange in December 2025 to rescind the trades under the Financial Services and Markets Act 2000, the statute Barber's team says makes every one of those swaps a regulated activity in the UK. The filing states BitMEX held no authorization from the Financial Conduct Authority to offer them, which would leave the contracts unenforceable against him, and he seeks the coins back in kind or an equivalent payment with interest. The particulars also allege fraud and negligent misrepresentation, claiming the exchange implied it was entitled to trade lawfully while knowing otherwise. They point to BitMEX's marketing reach: worldwide promotional campaigns, an option that let users register the United Kingdom as their country of residence, and an advertisement placed in The Times on January 3, 2019. The claim cites a public warning the FCA issued on March 3, 2020, telling UK consumers the exchange was unauthorized and that anyone trading on it would have no access to the Financial Ombudsman Service or the Financial Services Compensation Scheme. The 324.8 Bitcoin (BTC) figure covers the disputed losing swaps alone, not Barber's total activity, and the action has been filed but not yet served.

BitMEX's Response and a Crowded Docket

BitMEX's position is procedural for now: a company spokesperson said HDR Global Trading Limited had not received notice of the claim, and no hearing has been listed. The dispute lands on a business that has already stopped operating. BitMEX halted trading on September 23, 2026 after more than 11 years, saying it had failed to find a buyer during 2025, and verified users with balances on the platform now face a charge of $50 per month or 1% per year, whichever is higher. Withdrawals of remaining balances are still being processed while the wind-down continues. The venue pioneered the perpetual swap and grew it into the sector's largest instrument by trading volume before its American legal troubles began.

In July, BKX Services and David Namdar filed a proposed class action in New York alleging BitMEX ran a hidden “Insider Trading Desk” that traded against customers and froze its servers during volatile periods to force liquidations. Those plaintiffs say they lost about 623 Bitcoin (BTC) between them and want the coins returned; BitMEX has denied the allegations. Co-founders Ben Delo, Arthur Hayes and Samuel Reed pleaded guilty in 2022 to breaking the US Bank Secrecy Act, avoided prison and were pardoned by President Trump in March 2025. BitMEX itself pleaded guilty to the same offense in 2024 and paid the US Department of Justice $100 million in January 2025. Delo has drawn separate attention in Britain for donating £36 million to Reform UK. The UK claim arrives while that wind-down, and the New York litigation, are both still live.

Seladore Legal partner Gareth Keillor, who acts for Barber, has said the outcome could reach beyond one client, because other UK traders may have entered similar contracts, though any recoverable claim depends on individual circumstances. Barber's team frames the case alongside a June 2026 action in which nearly 1,700 investors sued Binance and Changpeng Zhao over unauthorized derivatives sales targeting more than £150 million.

A Test Case Beyond One Trader

This case matters more for its remedy than for the size of the claim. If the court accepts Barber's reading of the 2000 statute, losing leveraged trades become recoverable claims rather than the accepted cost of speculation, and the June 2026 Binance action shows the theory is already being tested at scale. Timing cuts both ways. The coins Barber wants sit on a venue that stopped matching orders in September, and the dormancy fee will keep eroding balances while the claim waits to be served. He asks for the coins in kind, in effect restoring the spot trading position he would hold had the losing contracts never existed, a remedy UK courts have rarely ordered in crypto disputes. Whatever procedural route BitMEX takes, a ruling on enforceability would reach every UK trader who ran the same swaps on the wider Bitcoin market.