About Us

Sites Not On Gamstop is an independent research site for UK players looking at casinos not on GamStop. We focus on slots not on GamStop specifically — the game libraries, the welcome offers attached to them, and the sites that host them — so readers can see what's actually on offer before they sign up anywhere.

We don't operate a casino ourselves and we don't accept deposits or bets. What we do is track operators who sit outside the UK's self-exclusion scheme, look closely at their slot collections, bonus terms and payment options, and lay that information out plainly. This page explains how that work gets done and what governs it.

Why This Site Exists

GAMSTOP is the UK's national self-exclusion scheme, letting players lock themselves out of GamStop-registered operators for a set period. It's a genuinely useful tool for people who want it. But some players — after a cooling-off period, or simply because they prefer a different kind of operator — look for options that fall outside that scheme entirely. Casinos not on GamStop are typically licensed in jurisdictions like Curaçao rather than by the UK Gambling Commission, which means GAMSTOP's exclusion tools don't apply to them by design.

Our job is to make that landscape easier to navigate: which sites carry decent slot libraries, which bonuses are worth reading twice, and which payment methods actually move money quickly. We cover the wider picture too — for a broader rundown of the market, see our Non Gamstop Casinos UK 2026 guide.

How We Assess Each Site

Every operator on our list is looked at against the same criteria. Commission from any operator never buys a higher position — ranking is based on the factors below, checked consistently across every brand we cover.

• Slot library depth — how many slot titles are available, the spread of providers, and whether jackpot and megaways-style games feature alongside standard reels
• Welcome offer terms — not just the headline percentage or spin count, but wagering requirements, maximum bet limits while a bonus is active, and how long the offer lasts
• Payment practicality — deposit and withdrawal methods available to GB players, and any limits or processing times attached
• Licensing transparency — whether the operator publishes its licence details clearly and operates under a recognised jurisdiction
• Site usability — how straightforward registration, verification and cashing out actually are

We update ratings as offers and libraries change, and we flag when a promotion or slot selection looks thin rather than padding out a review to fit a template.

A Snapshot of the Sites We Cover

Our rankings currently include operators such as Betmica, Kikibet, Betninja, WinnerIsland, Rivo, Smash Casino, Nightluck, Zombillion, Daytonaspin and Gambiva. Each has a different slant — some lean heavily on percentage-matched slot bonuses, others on cashback or free spin volume — which is why we review them individually rather than treating a "welcome offer" as one interchangeable thing.

Betmica

Betmica tops our list with a Welcome Offer of 570% up to £5,700 plus 270 Free Spins, one of the largest headline packages we track. The percentage figure is eye-catching, but offers at this size almost always carry higher wagering requirements and staged release across several deposits — worth reading in full before assuming the whole £5,700 lands at once.

Kikibet

Kikibet's 350% up to £5,555 with 300 free spins puts it near the top for spin volume specifically, which matters if slots are the main draw rather than table games. The trade-off with a spin-heavy package like this is that individual spin values are often lower, so the free spins can contribute less real value than the headline number suggests.

Smash Casino

Smash Casino's 600% up to €10,000 Slots Welcome Package is built explicitly around slots, which fits players who have no real interest in the live-dealer or sportsbook side of these sites. Because the offer is quoted in euros, GB players should confirm the GBP conversion and any currency handling fees before opting in.

What Slots Not on GamStop Actually Offer

Beyond the welcome bonuses, the game catalogues at these sites typically span a few distinct categories:

• Classic and video slots — traditional reel formats alongside modern five-reel video slots with bonus rounds
• Megaways and high-volatility titles — variable-reel mechanics aimed at players chasing bigger, less frequent wins
• Progressive jackpot slots — pooled jackpots that grow across a network of players
• Table games and live dealer rooms — most non-GamStop operators also run blackjack, roulette and live-hosted tables alongside their slots
• Sports betting — several of these operators run a sportsbook as a separate section, which is a different product with its own terms and isn't the focus of our slot-led reviews

How Money Moves at These Sites

Payment setups vary by operator, but GB players typically encounter card payments, e-wallets and sometimes cryptocurrency as deposit and withdrawal options. Because these sites sit outside UK licensing, deposit and withdrawal timings, minimums and any processing fees are set independently by each operator rather than following a single UK standard — checking the cashier page directly before depositing is the only reliable way to confirm current limits.

Eligibility and Local Law

Casinos not on GamStop are licensed outside the UK Gambling Commission's framework, most commonly in Curaçao. That means the consumer protections built into UKGC-licensed sites — including mandatory GAMSTOP participation — don't apply in the same way. It doesn't make play at these sites unlawful for a UK adult to access, but it does mean the regulatory backstop is different, and players are relying more on the individual operator's own terms than on a UK regulator. Anyone reading this site should be 18 or over, and should weigh up licensing differences as part of choosing where to play.

If self-exclusion or spending controls are a current concern rather than a past one, our Responsible Gambling page covers support options and tools worth knowing about regardless of which site you're considering.

Keeping This Page Honest

Sites Not On Gamstop earns revenue through affiliate links — if you sign up with an operator via this site, we may receive a commission. That relationship never decides where a brand sits in our rankings; ratings are set against the criteria above, not against who pays the most. Full terms governing use of this site are set out in our Terms and Conditions.

Questions about how we research a site, or something you think we've got wrong? The Contact Us page is the way to reach us.