Report

Phase 4: Illegal Gambling Index – Technical Report

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

---

Published
5 November 2026

Last updated
5 November 2026 - Changes

Document actions
Print or save (opens in new tab)

Contents

• Phase 4: Illegal Gambling Index – Technical Report

---

• 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

Development of the analysis approach

Contents

1. Introduction to the development of the analysis approach An introduction to the development of the analysis approach used in The Gambling Commission's Phase 4 illegal gambling technical report.
2. Development of the illegal gambling index Details of the development of the analysis approach used in The Gambling Commission's Phase 4 illegal gambling technical report.
3. Flexing the index for the GSGB Flexing the index for The Gambling Survey for Great Britain in The Gambling Commission's Phase 4 illegal gambling technical report.
4. Recommendations for future use Future use of the illegal gambling index as developed in The Gambling Commission's Phase 4 illegal gambling technical report.

Previous section
Statement development - Illegal gambling technical report Next section
Commission modification of the index - Illegal gambling technical report

---

Last updated: 5 November 2026

Show updates to this content

No changes to show.