How We Rate Casinos
At On a Promise, we've developed a comprehensive methodology to evaluate and rate betting sites and casinos operating in the UK market. Our ratings are designed to help players make informed decisions based on what matters most. Below, we explain how we assess each casino across our key criteria.
1. Licensing & Regulation
We prioritise casinos that hold valid licences from recognised regulatory authorities. Our preference hierarchy includes:
- UK Gambling Commission (UKGC) – The gold standard for UK-based players, ensuring full compliance with UK gambling law
- Malta Gaming Authority (MGA) – A reputable EU regulator with strict standards
- Curaçao eGaming License – Acceptable but with lower regulatory oversight than UKGC or MGA
- Local GB Licenses – Where applicable, demonstrating commitment to local compliance
Casinos operating without proper licensing receive significant rating deductions regardless of other positive attributes.
2. Game Selection & Software Providers
We evaluate the breadth and quality of gaming offerings, including:
- Slot variety (classic, video, progressive jackpots)
- Live casino games (blackjack, roulette, baccarat, poker)
- Table games (European roulette, craps, keno)
- Quality of software providers (NetEnt, Microgaming, Pragmatic Play, Evolution Gaming, etc.)
- Game performance, graphics, and innovation
Casinos with exclusive or unique games, plus partnerships with industry-leading developers, score higher.
3. Bonus Terms & Wagering Requirements
We examine the fairness and transparency of promotional offers:
- Clarity of terms and conditions
- Wagering requirements (rollover multiples)
- Maximum cashout limits on bonuses
- Contribution rates (how different games count towards wagering)
- Bonus expiry periods and restrictions
- Absence of hidden clauses or unfair terms
We favour casinos with reasonable, player-friendly bonus structures and transparent T&Cs.
4. Payment Methods & Withdrawal Speed
We assess the range and reliability of banking options:
- Traditional methods (debit/credit cards, bank transfers)
- E-wallets (PayPal, Skrill, Neteller, Apple Pay)
- Cryptocurrency options (where applicable)
- Average withdrawal processing times
- Deposit and withdrawal limits
- Transaction fees and hidden charges
Fast, reliable withdrawals with minimal fees are highly valued.
5. Customer Support
We evaluate the quality and availability of customer service:
- 24/7 live chat availability
- Email response times
- Phone support (where offered)
- Knowledge base and FAQ resources
- Staff responsiveness and problem-solving ability
- Support for multiple languages
Casinos with responsive, helpful support teams and multiple contact channels receive higher ratings.
6. Mobile Experience
We assess the quality of mobile gaming:
- Responsive web design (mobile-optimised site)
- Dedicated iOS and Android apps (where available)
- Game load times and performance
- Navigation and user interface usability
- Mobile-specific features and functionality
Seamless, fast mobile experiences are increasingly important to our ratings.
7. Responsible Gaming Tools
We prioritise casinos that offer robust player protection features:
- Deposit limits (daily, weekly, monthly)
- Session time limits
- Self-exclusion options (temporary and permanent)
- Cooling-off periods
- Reality check reminders
- Easy access to problem gambling resources and support
- Links to GamCare, Gamblers Anonymous, and other charities
Casinos demonstrating genuine commitment to responsible gambling receive favourable ratings.
8. Our Rating Scale
We rate casinos on a scale of 1 to 10, where:
- 9-10 (Excellent) – Outstanding casino with strong licensing, game selection, fair bonuses, fast payouts, and excellent support
- 7-8 (Very Good) – Solid casino with good credentials, decent games, and reliable service
- 5-6 (Average) – Acceptable casino but with room for improvement in key areas
- 3-4 (Below Average) – Notable concerns regarding licensing, terms, or customer experience
- 1-2 (Poor) – Significant issues; not recommended. May include unlicensed or problematic operators
Our ratings are updated regularly to reflect changes in casino operations, new information, and player feedback. At On a Promise, our goal is to guide UK players towards safe, fair, and enjoyable casino experiences.