The short version
A high rating is not awarded because a casino has the biggest bonus or the loudest brand name. SisterSites UK rates pages by how useful they are for a reader trying to compare casino brands responsibly. The best page gives a quick answer, shows its evidence, explains account and bonus friction, links to the right supporting guides, and avoids claims that have not been verified.
Rating pillar 1: evidence quality
The first pillar is evidence. A page is stronger when it can identify the operator, licence context, official brand source, relevant terms, and the relationship between brands. A page is weaker when it relies on copied lists, old forum claims, logo similarity, or assumed ownership. Evidence does not have to make a page complicated, but it must be strong enough to support the wording used on the page.
Rating pillar 2: first-screen usefulness
A reader should not need to scroll for the basic answer. The first screen should say whether the page is about confirmed sister sites, a standalone brand check, a network comparison, or casino alternatives. It should also make the main caveat visible. For example, if a brand has no confirmed sister sites, the page should say that before showing alternative casinos.
Rating pillar 3: bonus clarity
Bonuses are judged by clarity, not size alone. A page should look beyond the headline amount and check eligibility wording, wagering, payment exclusions, maximum conversion, opt-in rules, expiry, and related-brand restrictions. A large bonus can still be a poor fit if the terms are narrow or if the reader is unlikely to be eligible.
Rating pillar 4: account and KYC risk
Sister-site research is most valuable when it explains what may happen after signup. Pages should flag where duplicate-account rules, identity checks, source-of-funds wording, safer gambling limits, withdrawal reviews, or self-exclusion issues may matter. The page must not suggest workarounds for restrictions, and it must not state shared account systems unless the evidence supports that claim.
Rating pillar 5: payment and withdrawal wording
Payment notes are useful only when they are careful. The site should not promise payout speed, approval, or availability unless that wording is verified and current. A stronger page explains what needs checking: withdrawal policy, identity verification, payment method exclusions, minimum deposit, and whether a bonus changes withdrawal conditions.
Rating pillar 6: internal linking quality
Internal links should help the reader move from a commercial page to a supporting explanation. A casino page may link naturally to the UKGC licence guide, bonus eligibility guide, KYC guide, or network comparison guide. Links should not be stuffed into every paragraph. The right link appears where the reader has a genuine next question.
Rating pillar 7: safer gambling context
A useful casino comparison page respects the fact that gambling can cause harm. Pages should avoid language that implies gambling solves financial problems, guarantees income, or is risk-free. Where account restrictions, self-exclusion, or gambling harm are relevant, the page should slow the reader down rather than pushing them toward another casino.
How scores should be interpreted
The score on a casino card is a comparison signal, not a legal or regulatory guarantee. It reflects how the card is positioned in the launch set and how useful the page is expected to be for offer comparison. The deeper page still matters. Readers should use the score as a shortcut only after checking the relevant terms and page notes.
What can reduce a rating
A page should lose confidence when it has unsupported operator claims, stale bonus copy, missing internal links, weak first-screen answers, unclear CTA paths, overconfident payment language, or no source trail for a sister-site relationship. A page can also be held back if it is technically functional but not yet useful enough for a reader making a real decision.
What we do not claim
The site does not claim that a casino is suitable for every reader, that a bonus is guaranteed, that a withdrawal will be approved by a specific time, that all brands in a corporate group share account systems, or that a casino relationship exists without evidence. Those claims require current source support, and some should be avoided entirely unless they come directly from the operator or official register.
Update process
Ratings and page wording should be reviewed when offers change, ownership changes, licence details change, terms are updated, or search data data shows that readers are arriving with a different intent than the page currently answers. The aim is not to freeze a perfect page. The aim is to keep each page aligned with the evidence and the user need.