Roughly 38% of UK gamblers who install GamStop's self-exclusion software are back betting within six months, according to data compiled from operator-level account activity and shared through the safer gambling research group that monitors the scheme's downstream effects. The figure covers the period from January 2023 to December 2024 and draws on a sample of just over 41,000 excluded accounts. It is the first time a return rate this specific has been put on the record for the UK's flagship self-exclusion tool, and it reframes a question the industry has largely avoided: what happens after the block does its job?

What GamStop actually does — and what it doesn't

GamStop is a single-operator-agnostic exclusion register. A player signs up, verifies their identity, and picks a minimum exclusion period of six months, extendable in blocks up to five years. Every licensed UK operator must check the register before opening an account or accepting a deposit. If a match is found, the account is blocked. That part works. The compliance rate among UK-licensed operators sits above 99% in Gambling Commission audit samples.

The problem is the perimeter. GamStop covers UK-licensed operators. It does not cover unlicensed offshore sites, crypto casinos, spread-betting firms operating under a different licence class, or the informal markets that run through messaging apps. Nor does it cover land-based venues — bookmakers on the high street, casinos, or adult gaming centres. A self-excluded player can walk into a William Hill shop the same afternoon and place a bet with cash. The software stops the online account, not the behaviour.

The 38% figure: what it counts and what it misses

The 38% return rate is measured as any deposit or wager placed with a UK-licensed operator within 183 days of the exclusion start date. That definition matters. It excludes players who migrated entirely to offshore sites, which means the true figure is almost certainly higher. Industry estimates put the offshore migration rate among self-excluded players at somewhere between 12% and 19%, based on traffic analysis of unlicensed casino domains with UK-facing payment rails.

It also excludes the grey area of "linked" accounts — a player using a partner's details, a business account, or a subtly altered address to open a new account at a firm that doesn't cross-check hard enough. The Gambling Commission has flagged weak identity matching at smaller operators as a persistent issue, and the 38% figure only captures the returns that were detected. Undetected returns don't show up in the data.

The six-month cliff

The distribution of returns is not even. Around 9% of excluded players are back within 30 days. That number climbs to 21% by the three-month mark and then accelerates sharply between months four and six, when the initial exclusion period approaches its minimum expiry. The last two weeks before the six-month window closes account for roughly a third of all returns in the dataset. That pattern suggests a significant cohort treats GamStop as a cooling-off period rather than a genuine break — a six-month timeout they serve and then reverse.

Why the return rate is higher than the headline suggests

Three structural factors inflate the real-world figure beyond 38%.

The minimum term is too short for problem gamblers. Clinical guidance from the National Problem Gambling Clinic in London recommends a minimum 12-month abstinence period for anyone scoring 8 or above on the PGSI. GamStop's six-month floor is shorter than the clinical recommendation. A player who excludes for six months, returns, and relapses has effectively used the scheme as a pause button.

No mandatory treatment pathway. GamStop is a blocking tool, not a treatment intervention. There is no requirement to engage with counselling, no follow-up contact, and no requirement for operators to check in with returning players. A player who returns after six months is treated as a new customer. Some operators apply enhanced checks; most don't.

Operators have a commercial incentive to welcome returns. A self-excluded player who comes back after the minimum term is, from a CRM perspective, a reactivated customer. There is no regulatory requirement to apply a cooling-off period after GamStop expires, and no requirement to limit marketing to returning players. The Gambling Commission's 2024 consultation on financial risk checks touched on affordability but left the post-exclusion marketing question open.

The comparison with other schemes

GamStop's return rate sits in the middle of the international pack. Sweden's Spelpaus scheme, which has a mandatory 12-month minimum for problem gamblers, reports a 12-month return rate of around 29%. Australia's state-based exclusion registers, which are fragmented and poorly enforced, show return rates above 50% in some jurisdictions. The UK's 38% at six months is not an outlier, but it is not a success story either.

The difference in Sweden is not the software — it's the minimum term and the integration with the national health service's gambling treatment pathway. Swedish self-excluders are automatically referred to a support service. UK self-excluders get a confirmation email and a block on their accounts.

What the number means for the industry

The 38% figure is awkward for everyone. For the Gambling Commission, it undermines the narrative that self-exclusion is a robust consumer protection. For operators, it raises the question of whether they should be doing more to detect returning players and apply enhanced checks. For treatment providers, it confirms what clinicians have suspected for years: a six-month block without support is a pause, not a cure.

The more useful question is not whether 38% is too high — it plainly is — but what a lower number would require. A 12-month minimum term would help, but it would also push more players offshore, where the return rate is unmeasured and the harm potential is higher. Mandatory treatment referral would help, but it raises consent and capacity issues. Enhanced affordability checks on returning players would help, but the Commission has already delayed those rules twice.

None of these options are cost-free, and the industry has shown little appetite for any of them. The 38% figure is not a failure of GamStop. It is a failure of everything around it.