What GAMSTOP is, and why “not on GamStop” means what it means
GAMSTOP is the national online self-exclusion scheme. Every operator licensed by the Gambling Commission is required to be connected to it, so one registration blocks you from all of them at once. A site “not on GamStop” is therefore not a site that opted out of a voluntary scheme — it is a site without a UK licence, because the two are inseparable.
That single sentence is the most useful thing on this page. The phrase describes a licensing status, not a feature.
What you lose, item by item
| What | UK licensed | Outside the licence |
|---|---|---|
| Complaints | Free ADR, binding on the operator | Whatever the offshore regulator offers, in practice very little |
| Money held | Player funds protection rating, disclosed to you | Unknown; if the site closes, so does the money |
| Verification | Before you deposit | Often only when you try to withdraw — which is when it becomes a weapon |
| Bonus terms | Bound by advertising codes | Max win rules of 3x-5x the bonus are common and enforced |
| Deposit limits | Required, with cooling-off on increases | Optional |
| Credit cards | Banned | Frequently accepted |
| Advertising | ASA jurisdiction | None |
The row that does the most damage in practice is verification timing. A site that verifies at withdrawal rather than at sign-up has a structural incentive to apply the check hardest to the accounts that are winning, and every complaint I have read from these sites follows the same pattern: months of untroubled deposits, then a document request on the first significant payout.
The pattern is consistent enough to be a rule of thumb. If a site did not need your documents to take money, be very careful about assuming it will accept them to pay it.
Nell Ashworth
Who actually uses them, and the uncomfortable part
Two groups, and they are not the same. The first are people who dislike UK verification and affordability checks and want fewer questions — a real preference, and the trade-off is the table above. The second are people who registered with GAMSTOP and are looking for a way around their own decision, which is the genuinely serious case.
If that is why you are reading this, the honest answer is that the search itself is the signal. The scheme worked, which is why you are looking for a gap in it. The free, confidential route out of that loop is the National Gambling Helpline on 0808 8020 133, and the rest of the toolkit — including blocking software that covers unlicensed sites too — is on the responsible gambling page.
What “licensed in Curaçao” is worth
Most of these sites hold a licence somewhere, usually Curaçao, Anjouan or Costa Rica. Those regimes exist, they charge fees and they publish rules. What they do not offer a player in Britain is a workable complaints route: correspondence is in English but the process is slow, the remedies are weak, and the regulator has no power a British player can practically invoke. Treating one of those licences as equivalent to a Gambling Commission licence is the single most expensive mistake in this category.
If you are going anyway
Then at least reduce the obvious risks. Verify the account fully on day one rather than waiting. Keep deposits small and withdraw early and often rather than letting a balance build. Read the maximum win clause on any bonus, because 3x-5x caps are standard here and they are enforced. Never use a credit card, which these sites accept and which converts a loss into a debt. And screenshot the terms as they stood when you signed up, because they change without notice and there is nobody to appeal to.
For what the licensed alternative looks like on the things people actually complain about, the measured figures are at fast withdrawal casinos, and the crypto version of the same argument is at crypto casinos. The same licensing gap shows up on the sportsbook side too, covered separately at betting sites not on GamStop.
Every site in our tables goes through the same four steps in the same order. We judge what actually happens, not what the front page says.How we test a casino
Is it illegal to play at a site not on GamStop?
The Gambling Act targets operators and their advertising rather than players. You are not committing an offence; you are outside every protection the Act provides.
Can these sites refuse to pay me?
In practice, yes, and the routes for challenging it are weak. There is no free binding adjudication of the kind a UK licensee must offer.
Does GAMSTOP block them?
No — that is definitionally what the phrase means. Blocking software installed on your own devices does cover them, which is why it is recommended alongside GAMSTOP.
Are winnings from these sites taxable?
Gambling winnings are not taxable for UK players regardless of where the site is. That does not make the money any easier to get out.
