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Methodology
How we score casino offers
Short version: we read the terms, extract the numbers, and put them through a fixed formula. The longer version is below, including the parts of a casino we can't measure and therefore don't pretend to.
1. How offers are captured
The terms for each casino were captured on 30 September 2026 from the operator's UK landing page, opened from a London connection with the browser set to British English. That matters because casinos often show different offers by country. We copy the headline and the significant terms exactly as displayed and store them unchanged; they're reproduced verbatim next to every offer on this site.
From that text the build script pulls out the figures the formula needs: maximum bonus, number of spins, stake per spin, wagering multiple, deadlines, conversion caps and the minimum deposit. If a figure isn't in the text, it's recorded as missing. It doesn't get estimated from memory or from another site.
2. The five metrics
| Metric | Weight | What goes in | Rule |
|---|---|---|---|
| B Bonus size | 20% | Convertible cash: the headline cash bonus, cut to the max conversion where the terms state one | 10 × min(cash, £100) ÷ £100 |
| W Wagering | 30% | Wagering multiple, plus the shortest deadline anywhere in the offer | 10 − 0.4 × multiple, then −1 if any part is due within 7 days |
| S Spin value | 15% | Number of free spins × stake per spin (10p assumed and flagged if the terms omit it) | 10 × min(face value, £20) ÷ £20 |
| D Min deposit | 15% | Minimum qualifying deposit | 10 × (1 − deposit ÷ £40), never below 0 |
| L Licence | 20% | UKGC account number with a public-register link; operator's company number and address | 8 for the account + register link, +2 if company details are disclosed |
Why these weights
Wagering gets the largest share, 30%, because it decides how much of any bonus survives. Bonus size and licence transparency get 20% each. Spin value and minimum deposit get 15% each: they matter, but a pile of 10p spins or a £10 entry point shouldn't outweigh the terms that govern the money.
Every constant (the £100 bonus yardstick, £20 of spin value, £40 deposit ceiling) is fixed. We don't grade on a curve, so a new casino joining the table can't push anyone else's score up or down.
An example
Luna Casino scores 5.0 on bonus size (£50 convertible), 6.0 on wagering (10x, 30 days), 2.5 on spins (50 × £0.10), 7.5 on deposit and 10.0 on licence. Weighted, that's 6.3. The formula note shows the same working for every casino.
3. Scores and commission
We're paid commission when readers open accounts through our links; the disclosure page has the detail. That money pays for the site, and it's why the leaderboard is labelled Ad. It doesn't touch the scores or the ranking, which is simply score order. No operator can buy a higher position: the inputs are its own published terms, and the formula is the same for everyone.
4. What we don't measure
Plenty. Game quality, live dealer tables, app performance, payment options, how fast withdrawals arrive, how support handles a problem. Some of that is in the reviews, taken from what the operator itself publishes and labelled as such. None of it is in the score, because it can't be read from the terms and we won't invent a number for it.
Nor does a score say anything about your chances. Casino games have a built-in house edge; over time, players as a group lose. A higher score means a fairer-structured offer. That's all it means.
5. Updates and corrections
The date of the last check is shown at the top of the homepage and on every review. When an operator changes its offer we re-capture the terms and rebuild; scores update automatically from the new figures. If you spot a term on this site that no longer matches the casino's page, tell us and we'll re-check it.