How We Review Casinos

All Sister Sites exists to answer one question that most casino review sites skip past: who actually runs the site you are about to hand your card details to? UK online casinos are overwhelmingly white-label operations, where dozens of differently branded sites sit on the same licence, the same platform and the same terms. Knowing the operator behind a brand tells you far more about how you will be treated than any welcome banner does. This page sets out, step by step, exactly how we research and write every review on this site, so you can judge for yourself how much weight to give our conclusions.

Step 1: We identify the operator on the UK Gambling Commission register

Every review of a UK-facing casino starts at the UK Gambling Commission public register. This is the official, free, publicly searchable record of every business licensed to offer gambling to consumers in Great Britain. We look up the brand’s operating company, note its licence account number, and check the licence status is live and active rather than surrendered, lapsed or suspended.

We do not just do this behind the scenes. On every UK casino review we publish, the licence account number is linked directly to the operator’s entry on the Commission’s register, so you can verify our claim in one click rather than taking our word for it. If we say a casino is run by a particular company under a particular licence, the source is right there.

Step 2: We verify against the live site itself

Register data alone is not enough, because brands migrate between operators more often than you might expect. A casino that belonged to one company last year may have been sold or moved to a different licensee since. So before we publish, we visit the casino’s live website and read the footer, where UK-licensed sites are required to state their operating company and licence details. The live footer is the current truth; if it disagrees with an older grouping or a historical list, the footer wins and our review reflects that.

This is also where we confirm a brand is actually still trading. The casino industry churns constantly, and sites close, merge or quietly disappear. We check whether a brand is live before recommending it, and when a casino has closed, we say so plainly at the top of the page rather than leaving a review up that points readers to a dead site.

Step 3: We cross-reference at least three independent sources

No single source gets the final say. For each review we cross-reference a minimum of three independent sources: the Commission’s register, the operator’s own site and terms, and established third-party coverage such as other reputable review platforms, player feedback and industry reporting. Where sources disagree, we dig further rather than picking whichever version is most convenient. Bonus figures, wagering requirements, withdrawal terms and game counts are taken from the casino’s current published terms at the time of writing, not from memory or from other affiliates’ pages.

Step 4: We map the real sister sites

The heart of every review is the sister-site list: the other brands genuinely operated under the same licence. We build these lists from the register’s own record of trading names and domains, not from guesswork. We only list brands we can tie to the same operator, and each sister site we feature gets its own short, individually written description. If an operator runs fifty skins, we do not pretend they are fifty different experiences; we tell you they share a platform and what that means in practice.

How we handle offshore and unlicensed brands

Some casinos that UK players encounter are not licensed by the UK Gambling Commission at all, operating instead under offshore regimes such as Curacao. Where we cover these brands, we say so clearly and prominently. An offshore licence means you do not have the protections UK regulation provides: no GamStop self-exclusion coverage, no UKGC-mandated safer gambling tools, and far weaker routes to redress if something goes wrong with a withdrawal. We do not dress offshore sites up as equivalent to UK-licensed ones, and our reviews of them carry explicit warnings to that effect.

The January 2026 bonus rules, and how they changed our reviews

Bonus terms are one of the areas UK regulation has tightened most recently, and it materially affects how we assess offers. In March 2025 the Gambling Commission announced that gambling promotions would be made safer and simpler, and the key change took effect on 19 January 2026: wagering requirements on bonuses offered by UK-licensed operators are now capped at 10x. The days of 40x or 65x playthrough on a UK welcome offer are over, and mixing product types within a single wagering requirement is also banned.

For our reviews, that means two things. First, when we describe a UK casino’s current offer, the wagering requirement you see should be 10x or lower; if we quote an offer that seems to break that cap, tell us and we will re-check it. Second, the gap between UK-licensed and offshore bonuses has widened. An offshore site advertising a huge bonus with 50x wagering is not being generous, it is operating outside rules that exist to protect you, and we frame such offers accordingly.

Named authors and dated updates

Every review on All Sister Sites carries a named author, and our author pages set out who they are and their background. We do not publish anonymous reviews. Pages also carry dated update logs: when something material changes, such as an operator migration, a licence status change, a closure or a new offer, we update the page and record when the review was last checked. A review’s published and modified dates reflect genuine editorial work, not automated date-bumping.

Editorial independence and how we make money

We want to be completely straightforward about this: All Sister Sites is an affiliate website, and we earn money when readers click through to some of the casinos we feature and sign up or deposit. Those referral commissions are what fund the site. What that does not buy is our verdict. Operators cannot pay to improve a rating, remove a criticism or suppress a closure notice, and our sister-site lists are determined by the licence register, not by who has an affiliate programme. Plenty of pages on this site describe casinos we earn nothing from, including closed brands and offshore sites we actively warn readers about. Where a link is a paid referral link, it is marked as sponsored in line with advertising rules.

Responsible gambling

Gambling should be entertainment paid for with money you can afford to lose, never a way to make money or to chase back losses. Every casino we review is for players aged 18 and over. If gambling is causing you problems, or you are worried about someone else’s gambling, free and confidential help is available. GambleAware offers advice, tools and a 24-hour National Gambling Helpline on 0808 8020 133. GamStop lets you self-exclude from all UK-licensed gambling sites in one step, for six months, one year or five years. We would rather you used those services than any casino on this site if there is any doubt at all.

Questions or corrections

If you spot something we have got wrong, from an out-of-date offer to a mis-attributed operator, please use our contact page to let us know. We check reported errors against the Gambling Commission register and the live site, and we correct promptly. Being verifiable is the whole point of the way we work, and readers who hold us to it make the site better.