Report

Phase 4: Illegal Gambling Index – Technical Report

The Gambling Commission’s technical report detailing the development of the Illegal Gambling Index.

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Published
5 November 2026

Last updated
5 November 2026 - Changes

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Contents

• Phase 4: Illegal Gambling Index – Technical Report

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• Executive summary
• Introduction
• Overview of approach
• • Timeline of the approach
  • Strengths and limitations
• Statement development
• • Statement development during Phase 1
  • Statement development during Phase 2
  • The final statements for the GSGB
• Development of the analysis approach
• • Introduction to the development of the analysis approach
  • Development of the illegal gambling index
  • Flexing the index for the GSGB
  • Recommendations for future use
• Commission modification of the index
• Final illegal gambling index
• • Final strength ratings for the index
  • Calculating the index
  • Reporting the findings
• Conclusions and next steps
• Appendices
• • Appendix A - Quota and weighting targets for representative online survey
  • Appendix B - Authorship of this report

Appendix A - Quota and weighting targets for representative online survey

Quota and weighting targets for representative online survey

Quota and weighting targets for representative online survey

Group	Target (percentage)
Male	53%
Female	47%
Aged 18 to 24 years	10%
Aged 25 to 34 years	19%
Aged 35 to 44 years	17%
Aged 45 to 54 years	18%
Aged 55 to 64 years	17%
Aged 65 to 74 years	13%
Aged over 75 years	7%
Working	70%
Non-working	30%
Scotland	9%
North East	5%
North West	5%
Yorkshire and Humber	9%
West Midlands	9%
East Midlands	8%
Wales	5%
East of England	10%
London	10%
South East	13%
South West	13%

Next section
Appendix B - Authorship of this report

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Last updated: 5 November 2026

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