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Illegal Gambling UK: Problem Gambling Seven Times Higher on Unlicensed Sites
The UK Gambling Commission (UKGC) released a study on 30 October 2026 that shows players on unlicensed gambling sites are seven times more likely to exhibit problem gambling behaviour than those on licensed operators. The report, based on banking transactions from July 2018 to July 2026, found that 45 % of illegal-site users scored eight or higher on the Problem Gambling Severity Index (PGSI), compared with 6 % of licensed-site users.
Illegal Sites Carry a High-Risk Profile
A PGSI score of eight or above signals the highest risk category. The UKGC’s analysis indicates that nearly half of the illegal-site cohort falls into this bracket, while only a small fraction of licensed users do. The study also identified an additional 17 % of illegal users with PGSI scores between three and seven, versus 9 % of licensed customers.
Illegal Gambling Runs Parallel to Licensed Play
The report examined whether illegal gambling displaces licensed betting. Among the 179 individuals who made at least two illegal transactions, 91 % also gambled with licensed operators. Monthly licensed transaction volumes stayed virtually unchanged before and after the first illegal transaction: an average of 24.8 transactions in the month prior versus 23.7 after. This pattern suggests that illegal operators are used alongside regulated businesses rather than as a replacement.
Detecting Illegal Payments Is Challenging
UKGC sifted through 157.2 million banking records from roughly 38,000 people, supplied by YouGov. Initial attempts to match known illegal-operator names against transaction descriptions failed, likely because these operators rarely include their business names in payment notes. The regulator then relied on known transaction descriptors and merchant names to flag 3,426 suspected illegal payments.
Cryptocurrency transactions were not captured in the banking data, leaving the true size of Britain’s illegal gambling market uncertain. The UKGC noted that the absence of crypto data means the figures could understate the extent of unlicensed activity.
Licensing Loopholes and Player Risk
The findings raise questions about the effectiveness of current licensing frameworks. If illegal gambling operates in tandem with licensed play, players may be exposed to higher risk environments without leaving the regulated market. Operators must scrutinise KYC triggers and withdrawal limits to ensure that players who engage with unlicensed sites are not inadvertently funneled into higher-risk betting.
Practical Consequences for Operators
- Compliance costs: Licensed operators may need to invest in enhanced monitoring tools to detect cross-platform activity and flag high-risk players.
- Withdrawal reliability: Players who gamble on illegal sites may face delayed or denied withdrawals if their accounts are flagged by regulatory systems.
- RTP scrutiny: Operators must maintain transparent RTP disclosures, as players on illegal sites may be attracted by unverified payout promises.
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Related Insight
The UKGC’s findings echo the broader trend of illegal betting markets expanding. In August, the Betting and Gaming Council warned that UK black-market Premier League betting could reach £1 billion by the 2027/28 season. The UKGC report underscores the need for coordinated enforcement across jurisdictions.
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