Gambling regulator under fire over controversial study into problem gambling  

The UK Gambling Commission is publishing new figures from the Gambling Survey for Great Britain (GSGB) this week. Even before the results have been made public, the survey is once again under fire. Critics argue that the survey consistently shows inflated figures for both gambling participation and problem gambling, thereby painting a distorted picture of the UK gambling market.  

The discussion is more than just an academic debate. The findings of the GSGB are used by policymakers, politicians and interest groups to justify stricter regulation of the gambling sector. If the figures do indeed deviate from reality, this could have far-reaching consequences for future legislation.  

Significant discrepancies with other official surveys  

Since the GSGB was introduced in 2024, the survey has reported significantly higher percentages of problem gamblers than previous national surveys. These include the Health Survey for England, the Scottish Health Survey and other large-scale surveys conducted by the UK health services.  

According to critics, this discrepancy is difficult to explain. They point out that the new survey also shows much higher participation rates for sectors for which reliable administrative data is available, such as land-based casinos, betting exchanges and traditional football pools. 

Precisely because these figures can be compared with actual market data, opponents argue that it is clear the survey overestimates participation. If that is the case, it also raises questions about the reliability of the figures relating to problem gambling.  

Gambling Commission stands by the survey  

The Gambling Commission rejects the criticism. The regulator states that the GSGB was developed by independent experts and underwent extensive review before the survey was rolled out.   

Furthermore, the regulator refers to studies by the London School of Economics (LSE). These reportedly show that the way in which a survey is presented influences participants’ responses. The chosen research method can also lead to differing results. 

According to the Gambling Commission, this does not automatically mean that the GSGB is unreliable.  

Criticism regarding possible overestimation  

Opponents, however, draw a different conclusion from the same studies.  

They point out that people are more likely to take part in a survey if they feel the subject matter is relevant to them. Because the GSGB is explicitly advertised as a gambling survey, they argue that there is a risk that a relatively large number of frequent gamblers will take part. This phenomenon is known as ‘topic salience bias’.  

When heavy gamblers are over-represented in a sample, both the prevalence of gambling and the number of problem gamblers may appear higher than they actually are. 

Furthermore, critics argue that existing studies by the UK health services were regarded as the ‘gold standard’ for many years. They therefore believe that the new survey cannot simply be regarded as more reliable.  

Why this is important  

Ultimately, the debate is not just about statistics, but also about policy.  

The GSGB is regularly cited in discussions about stricter regulation, advertising restrictions and additional measures to protect players. Critics argue that if the figures paint too bleak a picture of the extent of problem gambling, there is a risk that policy decisions will be based on incorrect assumptions.  

The Gambling Commission disputes this and emphasises that the survey remains an important tool for monitoring developments in the UK gambling market.  

Also relevant to Belgium  

The debate is also of interest to Belgium.  

The Gaming Commission, policymakers and politicians are increasingly basing their decisions on research into gambling behaviour and gambling addiction. These figures play a key role in measures such as advertising restrictions, stricter duty of care and other forms of consumer protection.  

This is precisely why the UK debate highlights the importance of reliable and transparent data. When statistics form the basis for far-reaching regulation, the research methods used must be beyond reproach. 

Whether the criticism of the British survey ultimately proves to be justified will be investigated further in the coming period. One thing is certain, however: the reliability of the figures on which gambling policy is based is under greater scrutiny than ever before.