About Us

Who We Are

Sites Not On Gamstop (boudinblanc.co.uk) is an independent comparison and information site dedicated to online casinos and betting sites that operate outside the GamStop self-exclusion scheme. We are based in the UK and write specifically for adult players in Great Britain who want straightforward, honest information about their options.

We do not operate any gambling services. Every casino listed on this site is run by a third-party operator. Our role is to research, compare and present those options so that you can make an informed decision before you commit your time or money.

What We Do and Why

GamStop is the UK's national self-exclusion register. When someone signs up to it, they are blocked from playing at casinos and betting sites licensed by the UK Gambling Commission (UKGC). Operators outside the UKGC's jurisdiction are not part of that scheme, and a significant number of adults in the UK search for information about them every day.

Our purpose is to give those readers accurate, well-researched information: which sites are legitimate, what licences they hold, what bonuses they offer, how withdrawals work, and what the real conditions attached to any welcome offer are. We cover the facts plainly and do not dress things up to make a site look better than it is.

You can browse our full list of reviewed sites on the Non GamStop Casinos page.

How We Research and Rate Sites

Every site that appears on Sites Not On Gamstop goes through the same structured review process. We do not accept payment for a higher position, and commercial relationships do not determine rankings. Our editorial scores reflect our independent assessment of the factors below.

• Licensing and regulation — We check which authority licenses the operator and what that means for player protection and dispute resolution.
• Bonus terms — We read the wagering requirements, game weighting, maximum bet rules and time limits attached to every welcome offer, not just the headline figure.
• Game range — We look at the breadth of slots, table games and live-dealer titles, and who the software providers are.
• Payment methods — We verify which deposit and withdrawal options are available to UK players, including e-wallets, cards, bank transfer and cryptocurrency where applicable, along with processing times and any fees.
• Anonymity and account requirements — Because our focus is anonymous online gambling, we pay particular attention to how much verification an operator requires at registration and at withdrawal.
• Support quality — We assess whether live chat, email and any other contact channels are genuinely reachable.
• Mobile experience — We review how the site performs on a phone browser and whether a dedicated app is available.

Each site is given an editorial rating out of 10. No rating is a guarantee of outcome — it reflects our assessment at the time of review. Offers and terms change, and we recommend verifying the current conditions directly with the operator before registering.

Our Top-Rated Sites at a Glance

The ranked cards at the top of our main listing page show our current top picks. Here is a brief summary of what earned the leading three their positions.

Smash Casino — Rated 9.9

Smash Casino holds the top spot in our current rankings. What distinguishes it for this page's audience is its unusually large slots welcome package — 600% up to €10,000 — which is structured specifically around slot play rather than spread across game types. That focus matters if slots are your primary interest. The percentage multiplier is high, but players should read the wagering conditions carefully before depositing, as high-percentage bonuses almost always carry stricter playthrough requirements than lower-headline offers. The operator also supports a range of payment methods suited to UK players who prefer not to use traditional banking.

Betninja — Rated 9.7

Betninja stands out for offering a welcome package denominated in GBP — £1,000 plus 100 free spins — which is straightforwardly useful for players funding from a UK bank account or e-wallet without having to think about currency conversion. The combination of a cash bonus and free spins gives more flexibility than a slots-only package, covering both standard slot sessions and any free-spin titles in the promotion. One point to watch: free spins are typically assigned to specific games, and the winnings from them are usually subject to separate wagering rules from the cash bonus. Check both sets of terms before you claim.

WinnerIsland — Rated 9.6

WinnerIsland earns its place through a well-balanced welcome offer — up to €1,000 plus 100 free spins — and a game library that covers slots, table games and live-dealer options in meaningful depth. For players who want variety rather than a slots-only experience, that range is a genuine advantage. Its rating reflects solid performance across most of our assessment criteria. The main limitation is that its welcome bonus is capped at €1,000, which is lower than some rivals; higher-stakes depositors may find more value elsewhere in the list.

Affiliate Disclosure

Sites Not On Gamstop earns commission when a reader follows a link from this site and registers or deposits at one of the listed casinos. This is standard practice for independent comparison sites and is at no extra cost to you — the casino absorbs that cost, not the player. Commercial arrangements do not buy higher rankings. Our editorial scores are determined by the criteria above, applied consistently across every site we review. If a site does not meet our standards, it does not appear here regardless of any commercial relationship.

Age and Eligibility

This site is strictly for adults aged 18 and over. By using boudinblanc.co.uk you confirm you meet that requirement. All of the sites listed on Sites Not On Gamstop are also 18+ only. Age verification is a legal and regulatory requirement across the industry, and the operators we list enforce it at the point of withdrawal if not at registration.

UK residents should also be aware that casinos operating outside the UKGC framework are not covered by the UK's statutory consumer protections for gambling — including the right to use the Independent Betting Adjudication Service (IBAS) for dispute resolution. That does not mean non-GamStop operators are unregulated; most hold licences from recognised jurisdictions such as Curaçao, Malta or Gibraltar. It does mean the regulatory safety net is different, and you should factor that into your decision.

Responsible Gambling

We take our editorial responsibilities seriously. Players who feel they may be gambling more than they intend to should review the tools available to them — deposit limits, session limits and self-exclusion options exist at most of the operators we list, independently of GamStop. Our Responsible Gambling page covers those options and signposts further support.

Accuracy and Updates

Bonus offers, terms, game libraries and payment methods change regularly. We review our listings on an ongoing basis, but there will always be a gap between an operator updating their terms and our copy reflecting it. Always read the current terms on the casino's own site before registering or claiming a bonus. If you spot something that appears out of date, please contact us and we will investigate.

Our Terms and Conditions set out the full legal basis on which this site operates, including the limits of our liability for inaccuracies.