Methodology
Eight criteria, checked the same way every time
This is the full breakdown of what feeds into each operator's score out of 10, and why mobile comes first.
Why mobile leads the list
Most visitors to this site open it, and then any operator they choose, from a phone. An operator with a brilliant desktop site but a bolted-on mobile experience is going to disappoint more readers than one with a slightly smaller game catalogue but a proper native app. That's the reasoning behind weighting the mobile and app criterion first rather than treating it as one line among many.
What we actually test
We create a real account on each operator, browse the site and app on both iOS and a mid-range Android device, and note load times, navigation friction, and whether casino features get the same attention as sport (where a sportsbook exists). We don't rely on marketing copy for any of the eight criteria below.
Turning notes into a score
Each of the eight factors carries roughly comparable weight, with mobile and app experience given a modest extra pull given how most readers actually use these sites. The final number is a considered average, not a formula spat out automatically — two similarly-scored operators can still feel quite different day to day, which is why we publish the written detail alongside the number rather than the number alone.
The eight criteria in full
- Mobile & app experience. This is the factor we lead with. A native app that loads quickly and keeps its features on a small screen makes a bigger day-to-day difference than most players expect, so we checked whether each operator has one, how it's built, and whether the casino section gets equal billing with sport.
- Live casino. We looked at who supplies the live tables, how many variants are running at peak times, and whether the stream quality holds up on a phone connection rather than just on a desktop monitor.
- Game range. Raw slot count matters less than variety across volatility and theme, so we weighed breadth against whether the library actually feels curated rather than padded.
- Game studios. We checked which slot and live-casino studios each operator actually features, since the presence of a handful of well-regarded names is a more useful signal than a vague count of "titles".
- UKGC licensing. Every operator on this list holds a UK Gambling Commission licence, which is the baseline we require before anything else is assessed — none of the six would appear here without it.
- Welcome offer type. We note the general shape of each welcome offer rather than the headline number, because the type of offer — deposit match, free spins, or a sportsbook-linked free bet — tells you more about how the operator wants new players to start.
- Customer support. We checked how each operator handles support contact for account and game queries — channel availability and how quickly a live chat window actually connects to a person.
- Overall usability. This is our holistic read on how easy each site and app is to actually use day to day — navigation, load speed, and how much clutter sits between a player and the game they want.
You can see how each operator scored on every one of these factors on the homepage comparison. Our funding model is separate from this scoring — read how on the affiliate disclosure page.