About Us
Sites Not on GamStop exists for one straightforward purpose: to help UK adults who have self-excluded through GamStop find honest, researched information about the offshore casinos that operate outside that scheme. We are an independent comparison site — not a casino, not an affiliate network, and not a lobby group. Every page you read here is produced by researchers who review each platform on its own merits.
A brief but important note: this site earns commission when readers visit a listed casino and sign up. That commercial relationship does not determine which sites appear at the top of our rankings — our editorial assessment does. We say this plainly, at the start, so you know how the site works before you read a word of our reviews.
What We Do and Why We Do It
GamStop is the UK's free national self-exclusion register. When someone signs up, participating operators are required to block that person from accessing their platforms. It is a valuable tool, and we cover it honestly on our responsible gambling page.
At the same time, casinos licensed outside the UK — typically in jurisdictions such as Curaçao — are not required to participate in GamStop, and accessing them from the UK is not illegal. Many UK adults use these sites. Our job is to make sure the information available to those people is accurate, balanced and genuinely useful, rather than leaving them to rely on unverified sources.
We research, compare and rank offshore casinos on a defined set of criteria. We are transparent about those criteria. We update our assessments when the evidence changes. And we flag weaknesses alongside strengths, including for the casinos we rank highest.
How We Research and Rank Casinos
Our team reviews each casino by examining publicly available information, operator terms and conditions, licensing documentation, player-facing interfaces and bonus structures. We do not claim to have deposited or played at every site — we say "researched" and "reviewed" because that is accurate. What we can verify, we verify. What we cannot, we say so.
Rankings are built on the following criteria:
- Licensing and regulatory standing — which jurisdiction licenses the operator, what that licence covers, and whether the operator's credentials are publicly verifiable.
- Bonus terms — wagering requirements, eligible games, maximum cashout limits and time restrictions. A large headline figure with punishing conditions ranks below a smaller, fairer offer.
- Game range — breadth of slots, table games, live-dealer rooms and any sports or speciality betting available.
- Payment methods — which deposit and withdrawal options are available to UK players, what the minimum and maximum limits are, and how quickly withdrawals are typically processed based on operator-stated terms.
- Responsible gambling tools — whether the site offers deposit limits, session timers, self-exclusion options and links to support organisations, even outside the GamStop framework.
- Customer support — availability, contact channels and response quality based on published information.
Commission does not buy position. A casino that pays us more does not rank higher as a result. If a highly rated site has a meaningful flaw, we say so — that is what the limitation note in every write-up is for.
The Casinos We Currently Feature
Our main casino listings page carries the full ranked set. Below is a summary of the three highest-rated platforms we cover, along with an honest assessment of what makes each one worth considering — and where each one falls short.
Betmica — Rated 9.9
Betmica sits at the top of our current rankings on the strength of its welcome package — 570% up to £5,700 plus 270 free spins — and a game library broad enough to satisfy players looking for slots, live tables and more in one place. The headline bonus figure is one of the largest in sterling among the platforms we cover, which is meaningful for UK players who want to stay in GBP without conversion friction.
The limitation worth noting: a welcome offer this large will carry wagering requirements that need careful reading before you commit. Check the full terms for the contribution rates of different game types and the maximum withdrawal from bonus funds before depositing.
Kikibet — Rated 9.8
Kikibet earns its 9.8 rating through a combination of a generous welcome structure — 350% up to £5,555 and 300 free spins — and a slot catalogue that leans toward variety rather than volume alone. The GBP-denominated offer makes it straightforward for UK players to understand what they are actually being offered without doing currency arithmetic.
One genuine drawback: newer platforms of this type can have thinner track records on the speed and consistency of withdrawals. Review the published withdrawal timescales and payment method options before signing up, and start with a modest first deposit until you have experience of how the site handles payouts.
Betninja — Rated 9.7
Betninja positions itself as accessible to new players with a clear offer: £1,000 bonus and 100 free spins for newcomers. What stands out in our review is the straightforwardness of the welcome structure — a round-number bonus in sterling with free spins attached, rather than a multi-stage package that requires tracking several thresholds. For players who find layered welcome offers confusing, that clarity is a genuine advantage.
The limitation: 100 free spins is a more modest spins allocation than some competitors at this rating level, so if free spin volume is a priority for you, weigh that against the bonus amount. Also confirm which slots the free spins apply to — restricted game lists are common across the industry.
A Comparison of Our Top-Ranked Casinos
| Casino | Rating | Welcome Offer (headline) | Currency |
|---|---|---|---|
| Betmica | 9.9 | 570% up to £5,700 + 270 Free Spins | GBP |
| Kikibet | 9.8 | 350% up to £5,555 + 300 Free Spins | GBP |
| Smash Casino | 9.9 | 600% up to €10,000 Slots Welcome Package | EUR |
| Rivo | 9.8 | 1000% up to €10,000 + 25% cashback | EUR |
| Betninja | 9.7 | £1,000 Bonus + 100 Free Spins | GBP |
| WinnerIsland | 9.6 | Up to €1,000 + 100 Free Spins | EUR |
| Zombillion | 9.5 | 250% up to £4,000 + 200 Free Spins | GBP |
| Gambiva | 9.3 | 800% up to €10,000 | EUR |
| Nightluck | 9.1 | €6,400 + 280 FS + 805% | EUR |
| Daytonaspin | 9.1 | 255% up to £4,500 + 255 Free Spins | GBP |
Who This Site Is For
This site is intended for adults aged 18 and over who are based in the UK. It is specifically aimed at people who are aware of GamStop, understand what it does, and are looking for factual information about casinos that operate outside its scope. We do not target people who have not self-excluded, and we do not encourage anyone to bypass protections they find helpful.
If you are in a period of self-exclusion and are finding it difficult, the responsible gambling resources we maintain list free support services including GamCare, Gamblers Anonymous and the National Gambling Helpline. These are there for anyone who needs them, and there is no pressure on this site to keep reading if now is not the right moment.
Legal Standing for UK Players
The UK Gambling Commission licenses and regulates gambling operators who wish to serve UK customers commercially. Casinos listed on this site are licensed in other jurisdictions — Curaçao is common among them — and are not UKGC-licensed. This means they are not bound by the full range of UKGC consumer protections, including mandatory participation in GamStop, the UKGC's complaints and dispute resolution framework, or certain advertising rules.
Accessing and playing at an offshore casino from the UK is not illegal for the individual player. However, it does mean you are operating outside the UK's domestic regulatory framework. Practically, this affects dispute resolution — if something goes wrong, you cannot escalate to the UKGC or a UK-licensed alternative dispute resolution service in the same way you could with a UKGC-licensed operator. This is a genuine consideration, not a technicality, and we think readers deserve to have it said plainly.
Editorial Independence and Accuracy
Every rating on this site is an editorial score produced by our review process. Ratings are not customer review aggregates, and they are not purchased. Offers and their conditions are taken from publicly available operator pages and are accurate as of the fact-check date shown at the top of each page — bonus terms change, and we encourage you to confirm current conditions directly with the operator before depositing.
If you believe any information on this site is outdated or inaccurate, we want to know. Reach us through our contact page and we will investigate and update where the evidence supports a correction.
Our Commitment to You
We will keep our rankings based on research, not revenue. We will say when a top-rated site has a meaningful flaw. We will not pretend to have tested something we only researched. And we will keep our responsible gambling information current and visible, because we think that matters regardless of the audience.
If you have a question about how we work, how a casino was assessed, or anything else on the site, the contact page is the right place to start. We read everything sent to us.