Britain Sanctions HTX Crypto Exchange Over Kremlin Money Network

Britain sanctioned HTX on May 26, placing the exchange formerly known as Huobi Global on a list of 18 entities accused of helping Russia fund its war in Ukraine. The U.K. Foreign, Commonwealth and Development Office named Huobi Global S.A., a Panama-registered company, as suspected of channeling $1.5 billion to the Kremlin through two Russian financial networks: A7 Limited Liability Company, a Kremlin-backed cross-border settlement platform, and Garantex Europe OU, a Moscow-based crypto exchange already sanctioned by U.S. authorities.

For Justin Sun, the Tron blockchain founder who serves on the exchange’s global advisory board, the designation lands at the worst possible moment. Sun spent roughly $200 million building political proximity in Washington through Trump-family crypto investments, watched the U.S. Securities and Exchange Commission (SEC) settle a yearslong fraud case against him for $10 million in March, then sued the Trump family’s flagship crypto venture for alleged fraud in April. London paid none of that any mind.

A New Class of Crypto Sanction

The May 26 action represents something qualitatively different from earlier regulatory moves against the exchange. Blockchain analytics firm Elliptic confirmed that Britain applied Regulation 17A of the Russia (Sanctions) (EU Exit) Regulations 2019, marking the first time the U.K. has used those provisions against a crypto exchange. The May 26 Russia sanctions designations on GOV.UK took effect immediately upon publication.

The scope of the measures is broad. Under the designation, the platform faces:

• A full asset freeze on all funds held within U.K. jurisdiction
• A ban on correspondent banking relationships with U.K. financial institutions
• Prohibition on payment processing for any transaction connected to the exchange
• Director disqualification sanctions barring executives from serving on U.K. company boards
• Internet services sanctions, requiring U.K.-based internet service providers, app stores, and social media platforms to restrict access to the exchange’s services
• Trust services restrictions preventing U.K. firms from providing company formation or management services

Elliptic noted a further complication. The prohibition extends beyond direct transactions: any on-chain transfer that passed through the platform at any point in its history could now be treated as a prohibited transaction by U.K. counterparties, putting correspondent banks and payment processors in an awkward position even if they were not directly dealing with the exchange themselves.

The inclusion of Eurasian Savings Bank alongside crypto platforms in the same package sends a secondary signal. Britain is treating exchanges and traditional banks as equivalent nodes in the same enforcement network, not as separate regulatory categories requiring separate legal frameworks.

The Kremlin’s Crypto Pipeline

A7 and the Russian Relay Network

The A7 network occupies the center of the U.K.’s case against the exchange. The Foreign Office describes A7 as a Kremlin-backed system designed to bypass Western sanctions, finance military procurement, and process funds from the sale of Russian oil. British officials claim A7 moved more than $90 billion last year, a figure that London calculates as roughly half of Russia’s annual military expenditure. To move funds within Russia’s financial orbit, the network uses the A7A5 stablecoin, a ruble-pegged digital asset, and routes money through Kyrgyzstan’s banking system. According to the Foreign Office, A7-linked entities channeled an estimated $1.5 billion back into Russia through a Kyrgyz bank and one major crypto exchange platform.

Garantex carries a longer enforcement history. The exchange, originally registered in Estonia but operating from Moscow since 2019, was first sanctioned by the U.S. Treasury’s Office of Foreign Assets Control (OFAC) in April 2022 for facilitating money laundering by ransomware groups and darknet markets. It continued operating despite that designation, cycling through wallet addresses daily to evade compliance screening. A coordinated international operation in March 2025, led by the U.S. Department of Justice alongside German and Finnish authorities, seized Garantex’s primary domains and froze more than $26 million in cryptocurrency. The Justice Department’s Garantex disruption operation also unsealed indictments against two of its administrators. The exchange subsequently rebranded as Grinex, drew a re-designation from OFAC in August 2025, and then halted operations last month after what its operators described as a $13 million state-backed hack.

HTX’s Bridge Function

Britain’s formal statement of reasons says U.K. authorities have “reasonable grounds to suspect” that Huobi Global S.A. provided financial services, funds, economic resources, or technology to A7, “which is carrying on business in a sector of strategic significance to the Government of Russia.” Tom Robinson, an analyst at Elliptic, confirmed to AFP that the $1.5 billion figure specifically concerns the platform, describing it as “the only global crypto exchange added to their sanctions list today.”

Three entities sit at the core of the U.K.’s network allegation, mapped below.

What the On-Chain Numbers Show

Huobi issued public statements in 2022 saying it was winding down Russia-facing activity following the full-scale invasion of Ukraine. Blockchain data compiled by TRM Labs, whose researchers analyzed on-chain flows connected to the May 26 designations, tells a different story. Flows to sanctioned Russian entities did not taper after the stated wind-down. They accelerated sharply after the March 2025 international takedown of the Moscow exchange, precisely the moment when the network most needed a functioning global bridge.

• $4.9 billion in total direct on-chain transfers from Huobi to U.K.-sanctioned Russian entities and A7-network platforms since 2021
• $1.95 billion sent to the sanctioned Moscow exchange in 2022, and $1.18 billion in 2023, the latter after Huobi’s stated Russia wind-down was supposedly in effect
• $838 million sent to A7 in 2025 alone, a 193-fold increase from the period before the March 2025 takedown
• Combined flows to successor platforms, including Rapira, Aifory Pro, Grinex, ABCex, and A7-linked entities, grew roughly 10-fold in the 14 months after the international enforcement operation

Sun’s Shrinking Political Cover

Sun built his U.S. regulatory exposure into a feature rather than a liability by becoming one of the most visible investors in the Trump family’s crypto ventures. According to court filings and media reports, Sun committed $75 million to World Liberty Financial (WLF), a crypto decentralized-finance project co-founded by President Donald Trump and his sons, and spent another $100 million acquiring the $TRUMP presidential memecoin, putting his total outlay into Trump-family crypto at roughly $200 million. While U.S. Treasury targeted Russia-linked crypto infrastructure through successive OFAC actions, Sun was positioning himself as a key financial backer of the most politically connected crypto project in Washington.

The calculus appeared to work inside the United States. The SEC had sued Sun and his companies, including Tron Foundation and BitTorrent Foundation, in March 2023, alleging market manipulation, artificially inflated trading volume, and concealed payments to celebrity promoters. After Trump returned to the White House in early 2025, the SEC put the case on hold and moved toward settlement. By March 2026, Sun agreed to pay $10 million to resolve the civil fraud case; neither he nor his companies admitted or denied wrongdoing. Senator Elizabeth Warren, the ranking Democrat on the Senate Banking Committee, called the deal an embarrassment and accused the SEC of becoming “a lap dog for Trump’s billionaire buddies.”

That relationship has since unraveled publicly. WLF froze Sun’s token holdings in September 2025, and the value of those holdings declined by more than $80 million according to blockchain tracking by Bubblemaps. Sun sued WLF in a California federal court in late April 2026, alleging breach of contract and fraud, claiming the company had secretly installed tools to prevent him from selling his tokens. WLF countersued in Florida state court in May, accusing the crypto entrepreneur of defamation during what it called a “scorched-earth pressure campaign.” The U.K. designation does not name Sun personally. The sanctioned entity is the corporate operator, Huobi Global S.A., and his listed role is global advisory board member.

The FCA’s Escalating Pressure

The Russia sanctions did not emerge from nowhere. The U.K. Financial Conduct Authority (FCA) placed the exchange on its consumer warning list months before the Foreign Office acted, explicitly cautioning retail investors that they had no regulatory protection when using the platform. In February 2026, the FCA escalated by launching High Court proceedings over alleged illegal promotion of crypto asset services to British consumers without FCA authorization, describing the action as historic – one of the first times it had taken a major exchange to the High Court rather than issuing fines or warnings.

Those promotions appeared across TikTok, X, Instagram, YouTube, and Facebook. Alongside the legal filing, the FCA asked Apple, Google, and major social media platforms to block the exchange’s applications and accounts from reaching U.K.-based users. By May 26, a national security designation under the Russia Sanctions Regulations had superseded the consumer protection track entirely.

If the Kremlin thinks it can evade our sanctions by hiding behind crypto networks and shadow financial systems, it is gravely mistaken.

Yvette Cooper, U.K. Foreign Secretary, made that statement in the announcement accompanying the May 26 package. The Foreign Office added separately that it was “tracking down and shutting off the financial lifelines that sustain Putin’s war machine.” The FCA’s High Court proceedings run on a separate legal track and continue regardless of Tuesday’s action.

Britain has imposed sanctions on more than 3,300 individuals and entities since Russia’s full-scale invasion of Ukraine, and U.K. authorities estimate those measures have inflicted roughly $450 billion in losses on Russia’s wartime economy. Tuesday’s package is framed as a continuation of that effort, but with a meaningful shift in approach: crypto exchanges treated as equivalent to traditional banks in the enforcement network, not as a distinct and slower-moving regulatory category.

The Fallout Across the Exchange’s Operations

The immediate legal position for anyone in the U.K. is straightforward: any financial institution, payment processor, or crypto firm with a U.K. nexus is now prohibited from maintaining any relationship with the platform. Banking partners outside the U.K. face a softer but real choice. When a major Western economy applies national security sanctions to a financial entity, correspondent banks and payment processors in third countries typically begin distancing themselves preemptively, regardless of their formal legal obligations, to avoid secondary exposure and reputational risk.

An HTX spokesperson told The Block that “regulatory compliance remains our absolute top priority at HTX. We proactively monitor and strictly adhere to regulatory frameworks in all jurisdictions where we operate globally, including the UK.” No broader statement from the exchange had been published by the time of this article.

Rival platforms including Binance, OKX, and Bybit stand to absorb trading volume from users who migrate away in response to the designation. Tom Robinson of Elliptic confirmed the platform was the only globally operating tier-one exchange in Tuesday’s package. That distinction matters: if the measure holds through legal challenge and banking partners treat it as a permanent condition rather than a temporary compliance event, the exchange’s access to Western financial infrastructure narrows in ways that no compliance statement will easily reverse.

Disclaimer: This article is for informational purposes only and does not constitute investment or financial advice. Regulatory sanctions can affect the value and accessibility of digital assets held on or connected to sanctioned platforms. Readers should consult a qualified financial or legal professional before making any decisions. All figures cited are accurate as of publication on May 27, 2026.