Britain's Foreign Office has designated Xinbi—a Chinese-language crypto marketplace that processed $24.2 billion in illicit transactions—marking the first government-level sanctions action against the infrastructure underpinning Southeast Asia's pig-butchering scam industry.
Britain has become the first country to formally sanction Xinbi Guarantee, a Chinese-language cryptocurrency marketplace that processed $24.2 billion in illicit transactions between 2022 and 2026, making it one of the largest illicit crypto platforms ever documented. The designation, announced on 26 March 2026 by the UK Foreign, Commonwealth & Development Office, freezes all UK-linked assets tied to Xinbi and prohibits British banks, crypto exchanges, and individuals from transacting with the platform or its principals. The action represents a significant escalation in the UK government's campaign against transnational financial crime, targeting not merely individual actors but the marketplace infrastructure enabling pig-butchering fraud, money laundering, and, according to British officials, the financing of North Korean state operations.
Deputy Secretary of State Stephen Doughty stated that the government would 'not allow British people to become victims of these dreadful scams or tolerate the awful human rights abuses perpetrated in these scam centres.' The designation extends to individuals Thet Li and Hu Xiaowei, Cambodia-based #8 Park scam compound operator Legend Innovation Co. and its director Eang Soklim, along with additional entities connected to the broader Prince Group network led by Wan Kuok Koi.
The Anatomy of a $24 Billion Criminal Marketplace
Xinbi operates as an informal escrow provider, marketplace, and wallet service for illicit actors across Southeast Asia, primarily servicing scam compounds running pig-butchering operations — a form of investment fraud in which victims are cultivated over weeks or months via social engineering before being defrauded of their life savings. Since 2022, the platform processed $24.2 billion in total transaction volume; its associated NewPay wallet accumulated nearly $500 million in total volume by March 2026.
The scale of Xinbi's growth accelerated sharply after its principal rival, Huione Guarantee, was targeted by the US Financial Crimes Enforcement Network under a Section 311 action in 2025. Following FinCEN's action and Huione's subsequent Telegram channel ban, Xinbi's daily inflows nearly doubled between May and December 2025, absorbing market share from the crippled competitor. The platform's resilience distinguished it from other illicit marketplaces and made it the dominant infrastructure for crypto-enabled transnational crime in the region.
Xinbi's services span the full illicit value chain: the platform facilitates the sale of stolen personal data used to construct convincing identities for scam operations, distributes satellite internet equipment enabling scam workers to contact victims across jurisdictions, and provides crypto settlement infrastructure for laundering proceeds. Transactions predominantly flow through USDT on the TRON network (TRC20), with additional support for Ethereum (ERC20) and BNB Chain (BEP20) — reflecting the industry-wide preference for stablecoins among operators seeking to minimise volatility in illicit holdings.
A Landmark Enforcement Action and Its Historical Context
The UK's action follows a broader pattern of escalating international enforcement against crypto-enabled crime. FinCEN's 2025 Section 311 action against Huione Group — which formally labelled it a 'primary money laundering concern' — established a precedent for treating marketplace operators as systemic infrastructure rather than mere transaction intermediaries. That action, while effective in disrupting Huione, inadvertently concentrated illicit flows through Xinbi, demonstrating how enforcement against individual nodes can redirect, rather than eliminate, criminal activity within a resilient ecosystem.
The UK government has pursued the broader Prince Group network for several years. Previous enforcement rounds froze assets including a £100 million City of London office block, two London mansions, and a helicopter. The latest designation sweeps in Thet Li, described as a key lieutenant managing the network's international finances, and Hu Xiaowei, an associate operating under three known aliases. Previous UK actions in this campaign resulted in asset freezes and seizures exceeding £1 billion in total.
Cambodia, home to #8 Park — believed to be the country's largest scam compound, with capacity for 20,000 trafficked workers — launched its largest-ever enforcement sweep in the wake of the UK sanctions, raiding approximately 2,500 sites and releasing tens of thousands of foreign nationals who had been trafficked and coerced into conducting fraud. The Cambodian response illustrates the role bilateral diplomatic pressure can play when direct prosecution across jurisdictions is not available.
Industry and Regulatory Responses
Blockchain analytics firms that had been tracking Xinbi's operations responded with detailed post-action analyses. Elliptic described the designation as 'a landmark action' demonstrating the UK's willingness to deploy sanctions tools against marketplace infrastructure rather than individual wallets. TRM Labs, which monitored Xinbi's growth following the Huione collapse, noted that the platform's designation was 'overdue' given its documented scale and the speed with which it absorbed displaced criminal activity.
Legal analysts at several UK law firms noted that the sanctions create secondary liability risks for any crypto exchange or financial institution that continues to process transactions linked to Xinbi-associated addresses — a deterrent effect that may prove more operationally significant than the formal designation itself. Major exchanges including Coinbase, Kraken, and Binance are expected to incorporate Xinbi addresses into their sanctions screening infrastructure, further restricting the platform's access to on- and off-ramps.
What Comes Next for Enforcement and the Industry
The Xinbi designation signals that Western enforcement authorities are prepared to act against illicit marketplace infrastructure even in jurisdictions where direct prosecution is not feasible. The UK action creates a template that the United States, European Union, and allied governments may follow; the US Office of Foreign Assets Control had not formally sanctioned Xinbi as of early April 2026, though analysts expect coordinated designations to follow given the established pattern of transatlantic enforcement coordination in crypto-related sanctions cases.
For the crypto industry, the sanctions create immediate compliance obligations for exchanges and wallet providers to screen against Xinbi-associated addresses — work already underway at platforms with robust blockchain analytics partnerships. The more strategically significant question is whether Xinbi's transaction volumes will follow the same pattern as Huione's and consolidate onto a third platform, repeating the cycle of enforcement-driven displacement. Blockchain analytics firms including Chainalysis and TRM Labs are monitoring on-chain flows for signs of migration to competing illicit marketplaces. The answer to that question will shape how regulators and enforcement agencies calibrate the next phase of sanctions strategy against crypto-enabled transnational crime.
