UKGC illegal gambling index 2026: what 586 websites mean for UK casino reviews

The UK Gambling Commission (UKGC) published two different kinds of evidence on 5 November 2026: a new Illegal Gambling Index based on survey answers and an updated dashboard tracking illicit sites, search visibility and disruption. For readers of UK casino reviews, the distinction matters. A count of websites is not a count of people; neither figure establishes whether a particular operator has a valid licence today.

586 websites: what the regulator actually counted

The November dashboard reports 586 identified illegal gambling websites accessible to Great Britain in September 2026, 4% above September 2025 but 4% below the previous three-month average. UKGC researchers used targeted search terms, followed referrals from relevant affiliate pages, removed duplicates and licensed operators, and manually reviewed candidate websites. The regulator explicitly describes the result as not a complete count of the illegal market.

It also identified 97 affiliate web pages containing links to illegal gambling sites. These are individual pages, not 97 affiliate companies; multiple pages from one publisher could count separately. Among monitored generic gambling searches, about 4% of resulting domains led to confirmed illegal gambling websites. This is a dated snapshot of selected search queries, not an estimate that 4% of all casino players use unlicensed websites.

Source: UKGC, Illegal gambling data dashboard, 5 November 2026.

What the new Illegal Gambling Index measures

The separate Phase 4 research analysed Gambling Survey for Great Britain responses gathered from April 2025 to April 2026. Rather than counting domains, its index combines behavioural indicators and how recently respondents report them.

UKGC's initial results estimate that 0.6% of respondents engaged with illegal gambling sites in the preceding four weeks, and an additional 0.4% did so earlier in the preceding 12 months. Among respondents who had gambled online within the last four weeks, 2.5% were estimated to have engaged with illegal gambling sites in that four-week period. The denominators differ, so these percentages must not be mixed or added without explanation.

The index does not provide a personal browsing history or a complete list of every illegal casino. It is a survey-based research tool for tracking probable engagement over time. UKGC's monitored-site data and survey estimates are complementary, not interchangeable.

Sources: UKGC Phase 4 initial findings and its technical report, 5 November 2026.

Five UK licence checks for a casino review

A credible UK casino review should verify the operator behind the exact web address before discussing customer service, payment options or game selection. A familiar game brand, provider logo or successful deposit is not evidence that a website holds the required UK operating licence.

1. Copy the exact website domain from the browser, not only the casino's trading name.
2. Search the UKGC register of gambling businesses using that domain, the advertised trading name or legal company name. Review licence status and scope.
3. Check that the business and remote gambling activity match the actual service offered. Similar company names alone do not prove a match.
4. Review regulatory actions and settlements and record the date checked. A previous licence, or an old positive review, does not prove current authorisation.
5. Keep licence verification separate from subjective editorial assessments. Even licensed operators can face enforcement for failures in safer gambling, money laundering controls or withdrawals.

The Commission notes that trading names and domains in the register are supplied by licensees and that it cannot guarantee all third-party-supplied information is accurate. If evidence conflicts, do not treat a guess as confirmation.

Our separate UK casino complaints and ADR guide explains practical complaint routes. Our review of the UKGC open-banking study examines a different, transaction-based research method. Those articles address separate questions; neither is a substitute for checking a casino's current licence.

Did enforcement reduce illegal gambling?

The November dashboard says 311 illegal gambling websites were subject to disruption action in the second quarter of the 2026–27 reporting year. Among monitored sites with sufficient traffic estimates, 77% recorded lower estimated traffic following action. The Commission also cautions against attributing every observed change solely to enforcement: search rankings, seasonality and other factors can affect traffic.

For readers, the actionable lesson is more specific than a headline about hundreds of websites: verify the legal operator and current domain independently, use dated primary sources, and distinguish research estimates from regulator licensing decisions.

Editorial note, 6 November 2026: This is an independent, source-based review of UK regulatory evidence, not a hands-on casino test. It does not endorse or link to unlicensed gambling services or recommend signing up for a casino. The UK figures cannot be used to infer Swedish licence status.