Nils Silinevics
Partner · AML & Crypto Compliance · Former FIU Investigator
You've been told your name or address matches a sanctioned individual on CEX.IO. CEX.IO, headquartered in United Kingdom (registered with FCA), is regulated by UK Financial Conduct Authority (FCA) under UK Money Laundering, Terrorist Financing and Transfer of Funds Regulations 2017. The exchange uses Chainalysis for blockchain analytics and Onfido for identity verification. CEX.IO is one of the few exchanges FCA-registered as a crypto-asset business in the UK. This means they're subject to UK MLR 2017 — one of the strictest AML regimes — but also means they follow due process more rigorously than offshore exchanges. CEX.IO freezes accounts under UK Money Laundering Regulations when their compliance team detects sanctions matches, high-risk deposits, or unusual withdrawal patterns. You receive a notice that your account has been flagged for a sanctions screening match, or your account is suddenly frozen without explanation. The platform is legally obligated to block accounts with potential sanctions matches pending verification.
CEX.IO freezes accounts under UK Money Laundering Regulations when their compliance team detects sanctions matches, high-risk deposits, or unusual withdrawal patterns. CEX.IO is one of the few exchanges FCA-registered as a crypto-asset business in the UK. This means they're subject to UK MLR 2017 — one of the strictest AML regimes — but also means they follow due process more rigorously than offshore exchanges. This background matters because it shapes how CEX.IO handles compliance — and how we approach resolving your case.
The compliance framework: CEX.IO operates under UK Money Laundering, Terrorist Financing and Transfer of Funds Regulations 2017, overseen by UK Financial Conduct Authority (FCA). Their compliance infrastructure uses Chainalysis for blockchain analytics and Onfido for identity verification. CEX.IO is known for fiat onboarding and card purchases for beginners, serving entry-level crypto users in Europe and UK — and their compliance team is calibrated to flag deviations from typical user behavior in that segment.
What triggers sanctions screening on CEX.IO:
Real case — FCA regulation: A UK-based user had €30,000 frozen on CEX.IO after making a large withdrawal to a new bank account. CEX.IO's compliance team requested source of funds documentation but the user's funds originated from crypto mining 5 years ago — he no longer had the mining records. We reconstructed the mining history from blockchain evidence (pool payouts, hardware purchase receipts) and CEX.IO released the funds within 8 days.
What CEX.IO requires to resolve this: Depending on the trigger, CEX.IO may ask for government-issued photo ID (verified through Onfido), proof of address (utility bill or bank statement within 3 months), AML compliance review (exchange statements, bank records, payslips, tax returns, or business documents), detailed transaction explanations with on-chain evidence, and in some cases a video verification interview. The challenge: CEX.IO rarely tells you which specific trigger caused the sanctions screening, so you're guessing at what documentation to provide — and each rejected submission makes the next one harder.
Our approach is specific to CEX.IO: CEX.IO's FCA registration means they follow UK regulatory procedures — including the right to appeal compliance decisions. We use the FCA's complaints framework to escalate unreasonable freezes. CEX.IO is more responsive to legal pressure than offshore exchanges because their FCA registration is commercially critical and they can't afford regulatory complaints.
Sanctions Screening on CEX.IO — our strategy: We prepare a formal non-association declaration with evidence that you are not the sanctioned individual — different date of birth, different nationality, different address, different occupation — and submit it through the platform's compliance channels with a legal cover letter.
The submission that matters: Instead of submitting through CEX.IO's standard support channels (where you'll get automated responses or generic template replies), we prepare a professional legal submission — a structured compliance package with a cover letter from a Swiss law firm citing UK Financial Conduct Authority (FCA) obligations and UK Money Laundering, Terrorist Financing and Transfer of Funds Regulations 2017. CEX.IO's compliance team processes legal submissions differently from regular user tickets — they're assigned to senior compliance officers, not support agents, and they bypass the automated response loop that delays most cases by weeks.
When standard compliance isn't enough: Some situations fall outside the normal compliance flow — inherited crypto holdings, accounts registered under another person's name, unprovable source of funds through conventional documentation, or cross-jurisdictional complications where your residence, the exchange's jurisdiction, and the fiat banking path all differ. If that sounds like your case, our complex cases practice handles scenarios that other firms decline.
Further reading: our guide on OFAC sanctions false positives in crypto covers the documentation and legal strategy in more depth.
We confirm the sanctions match is a false positive by comparing your identity details against the sanctioned individual's known attributes: date of birth, nationality, address, occupation. Partial name matches are the most common cause.
We prepare a formal non-association declaration with evidence: your passport/ID, date of birth, nationality, address, occupation, and a sworn statement that you are not the sanctioned individual. We cross-reference OFAC SDN, EU consolidated, and UN sanctions lists.
We submit the non-association declaration to {p_name}'s sanctions compliance team — not standard support. Our legal cover letter references {regulator} sanctions screening requirements and the false positive rate for common names.
Sanctions screening false positive resolved — account fully restored. We advise on name variations that may trigger future sanctions matches on {p_name}.
FCA registration means CEX.IO follows UK MLR 2017 procedures, but it doesn't prevent them from freezing accounts they deem high-risk. What it does mean is that they must follow due process: provide reasons for the freeze, allow you to respond, and make a timely decision. If CEX.IO freezes your account without explanation or drags the review out for months, they're violating FCA expectations — and we can escalate to the FCA complaints system.
CEX.IO is FCA-registered; Binance's UK entity (Binance Markets Limited) has had a more complex regulatory journey. CEX.IO is fully compliant with UK MLR 2017 and has a dedicated UK compliance team. This means freezes are more predictable (they follow UK regulatory procedures) but also more stubborn — CEX.IO's compliance team won't unfreeze an account without proper documentation because they face FCA scrutiny.
Platforms screen all users against OFAC SDN, EU consolidated, UN, and national sanctions lists using name-matching algorithms. If your name is similar to a sanctioned individual — even a partial match — your account is automatically flagged. False positives are extremely common, especially for names from the Middle East, Eastern Europe, Africa, and Asia. The flag doesn't mean you're sanctioned — it means the platform needs to verify you're not the sanctioned person.
Platforms screen against: OFAC SDN List (US), EU Consolidated Financial Sanctions List, UN Security Council Consolidated List, UK HM Treasury Sanctions List, and potentially national lists for the platform's jurisdiction. Each list covers different individuals and entities, and a match on any one list triggers a block.
We prepare a non-association declaration that includes: your full legal name, date of birth, nationality, passport number, current address, and occupation — compared side by side with the sanctioned individual's known details from the sanctions list entry. Key differentiators: date of birth (most definitive), nationality, place of residence, and occupation. The more differences we can demonstrate, the faster the flag is cleared.
Tell us your nationality, what Cex flagged, and any sanctions screening details. We respond within 6 hours.