The UK Gambling Commission (UKGC) has revealed that it is not yet in a position to provide a reliable estimate of the size of the UK’s illegal online gambling market. The statement was part of its final publication in a comprehensive four-part research series examining the dynamics of unlicensed gambling activity.
According to the report, titled “Estimating the size of the illegal online gambling market,” the regulator faces considerable challenges in quantifying a sector that operates outside formal oversight. The Commission explained that, similar to illicit trade in other industries, reliable data on illegal gambling is extremely limited, often forcing reliance on assumptions that weaken confidence in any single figure.
Despite this, the UKGC has strengthened its understanding of consumer motivations, enforcement challenges, and the market’s underlying risks. The research revealed that while some consumers unknowingly access unlicensed websites, others deliberately use them due to restrictions or self-exclusion measures in the regulated market.
UKGC Chief Executive Andrew Rhodes emphasized that illegal gambling poses a persistent threat to both players and legitimate operators. He noted that while precise market measurement remains elusive, the Commission’s collaborative approach with law enforcement, financial institutions, and international partners has enhanced its capacity to disrupt unlawful activities.
The regulator’s findings mark a step forward in improving the UK’s regulatory resilience and transparency. The UKGC confirmed that further updates will follow as part of its ongoing work to strengthen data collection and enforcement strategies.


