Report

Illegal online gambling: Consumer engagement and trends

The Gambling Commission’s report into estimated trends in consumer engagement with illegal gambling websites.

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Published
25 September 2025

Last updated
30 September 2024 - Changes

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Contents

• Illegal online gambling: Consumer engagement and trends

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• Executive summary
• Introduction
• Identifying illegal gambling websites
• Measuring engagement with the online illegal market
• Assumptions on use of Virtual Private Networks (VPNs)
• Conclusions
• Next steps
• Annexes
• • Annex A - Summary of approach, assumptions and caveats
  • Annex B - Bootstrapping methodology for web traffic estimates
  • Annex C - Consumer research on VPN use

Financial information - Total revenue

Group	Question	Guidance
Total Revenue	Gross Gambling Yield (GGY) – GB	Calculated field - no user entry required.
Total Revenue	Is the calculated GGY previously stated correct?	Enter 'no' if the auto-calculated GGY is incorrect.
Total Revenue	User calculated GGY – GB	State the user-calculated GB only GGY for the period covered by this return.
Total Revenue	Reason for the difference	Provide an explanation for the difference in auto- and user-calculated GGY.

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Last updated: 30 September 2024

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