How We Rate Casinos: Our Casino Review Criteria and Weightings Explained

Knowing how we rate casinos is essential for making informed decisions about where to play. That’s why we review the strengths and weaknesses of online casinos using a comprehensive set of criteria.
Testing, testing, testing is our mantra at GamblingAuthority. We examine every minute detail to provide the most complete online casino reviews. Each of these review criteria is covered below…
Why Trust GamblingAuthority Reviews?
Before we get to the criteria, it’s important to ask why you should trust us. First, our team has over 25 years combined in the industry. Second, we spend countless hours reviewing tiny details to provide the most extensive casino assessments. Third, we regularly update our reviews to ensure they include the latest information about each casino.
Lastly, we’re not afraid to call out casinos that should be avoided, reveal bad practices, or point out areas needing improvement. Our reviews never pull punches; we always tell it how it is. We want you to return, and we know that won’t happen if we aren’t 100% honest.
GamblingAuthority has reviewed hundreds of casinos since launching in 2022!
Please visit our Casino Reviews page to see all the sites we’ve evaluated. We also constantly add new casinos, so check back regularly for our latest reviews and updates.
For more general information about GamblingAuthority, please visit our About Us page. Or, to read more about our writers, editors, and fact-checkers, please refer to our Authors page.
How We Rate Casinos: Our Review Criteria
Below is a comprehensive list of criteria we rigorously apply to determine whether an online casino deserves top marks. This list covers every significant factor impacting player experience, trustworthiness, and overall quality compared to other online casinos in the UK.
Review Criteria | Overall Weighting |
---|---|
Casino Bonuses | 15% |
Games Selection | 15% |
Payment Methods | 15% |
Licensing & Regulation | 15% |
Safety & Security | 10% |
Responsible Gambling | 10% |
Customer Support | 10% |
Company Ownership & Reputation | 5% |
User Experience & Site Design | 5% |
Casino Bonuses (15% Weighting)
Bonuses can make or break your first impression of an online casino. This is especially true if you’re a newcomer looking for extra playing funds to get started. We look beyond the impressive numbers to see how fair and straightforward these offers are for new and experienced players.
Sign Up Bonus
When you first arrive at a casino, the sign-up bonus often catches your eye: “100% up to £500! Get it now!” But does it live up to the hype? Or are things too good to be true?
- What We Look For: We want a decent match percentage (the higher, the better), clearly stated terms about how much you need to deposit and fair wagering requirements (the lower, the better). We also like a user-friendly opt-in process—no complicated hoops to jump through.
- Good Practice Example: A casino might offer a 100% match bonus of up to £200 with a simple 35x wagering requirement. You deposit £50 and instantly see another £50 credited to your bonus balance. You should also be able to track your wagering progress easily. The terms are easy to find and clearly explained, and no sneaky restrictions appear at the last minute.
- Bad Practice Example: A site advertises a giant 500% bonus but buries a 65x wagering requirement in the fine print. You only discover that you’re limited to £2 max bets on slots, table games are restricted from bonus wagering, and you can’t play high-RTP slots after you’ve deposited. We consider that a red flag.

Free Spins
- Overview: Free spins can be a fun way to explore a casino’s slot selection without risking too much of your own money.
- Real-World Testing: We look at the value (i.e. if a free spin is worth 1p or 20p), how many free spins are given, and which slots they’re valid for. A good casino will let you use them on popular or newly released games rather than obscure titles with poor RTP.
- Warning Sign: If a super high wagering requirement is explicitly tied to free spins or an ultra-low maximum win cap (like £50 max from free spins), that’s a sign they might be more a marketing gimmick than a genuine perk.
No Deposit Bonuses
- Overview: A no deposit bonus is basically “try before you buy”—you get free credit just for signing up. But these are often heavily restricted, so you must check the T&Cs.
- Good vs Bad: We love seeing a no deposit offer with fair wagering and a reasonable max cashout. But we sometimes encounter “traps” where the wagering is so high that converting the bonus into real winnings is practically impossible.
Cashback
- Overview: Casino cashback deals refund a small percentage of your net losses over a set period (daily, weekly, or monthly). Think of it like a safety net against bad luck.
- What We Like: A straightforward percentage—e.g., “10% weekly cashback up to £100”—with minimal strings attached. The simpler, the better.
- Pitfalls: If a casino advertises “30% cashback” but only on net losses on specific weekdays, or only if you have lost on live roulette, and only if you’ve deposited three times that week, the offer quickly loses its sheen. The casino score will be downranked according to how many restrictive terms are applied to the bonus.
Loyalty Program
Loyalty programs (or VIP promotions) keep existing players happy with rewards, points, or extra perks. They often involve tiers (Bronze, Silver, Gold, etc.).
- Criteria: We assess how quickly you can level up and what benefits each tier offers (e.g., higher withdrawal limits, personal account manager, birthday bonuses). We also check whether the progression system is transparent or if progress is almost impossible.
- Good Practice Example: A points-based system that clearly outlines “1 point per £10 wagered” or similar. You see genuine improvements once you reach a new tier—like bigger bonuses or invitations to exclusive tournaments.
- Bad Practice Example: A nebulous VIP scheme that never explains how you earn points or how the casino calculates your status. You might get an email claiming you’re a VIP, but no official page explains the perks.
Promotions for Existing Players
Casinos shouldn’t forget about their existing players after they claim the welcome offer. Ongoing promos—reload bonuses, free spins, slot tournaments—keep things interesting.
- Variety & Frequency: We check how often promos appear for existing customers. Do you get a weekly reload bonus? Occasional prize draws? Big-money slots tournaments? The more, the merrier.
- Pitfalls: Some casinos overdo the small print, meaning you might qualify for a reload bonus but face a short time window (24 hours) to use it, or you can’t bet more than £2 per spin while it’s active. Many leaderboard promotions also heavily favour high-rollers.
Wagering Requirements
Wagering is where the rubber meets the road on any bonus. A 200% bonus with 20x wagering is better than a 400% bonus with 60x wagering.
- Clarity is Key: We love it when the casino’s bonus page says, “You must wager your deposit + bonus amount 35 times within 14 days.”
- High vs Low: Anything above 50x deposit + bonus starts to feel punishing. We understand not every casino can offer ultra-low wagering, but we expect transparency.
- Real-World Examples: If we deposit £50, receive a £50 bonus, and the requirement is 35x the bonus (i.e., 35x £50 = £1,750), we expect that to be clearly stated before we hit “Deposit.”

Other Bonus Terms
Plenty of “small print” can lurk behind bonuses—max bets, excluded games, or time limits. We dig into these so you’re not caught out after making a real money deposit.
- Good Practice: In bold text, the casino lists maximum bet amounts (like £5 or £6.50) during bonus play. This ensures you can’t miss it.
- Bad Practice: The T&Cs are buried three pages deep, using complex legal jargon or referencing disclaimers that force you to click multiple links.
Games Selection (15% Weighting)
Variety is the spice of life, and that’s no different in online gambling. The best-rated casinos keep your options fresh and cater to many tastes, from slot enthusiasts to live casino die-hards.
Number of Games
- Basic Expectation: We'll do a quick tally if a casino claims 2,000+ games. We don’t mind slight discrepancies, but blatant exaggerations aren’t cool.
- Good Practice: Real game variety—meaning multiple categories, plenty of top-tier game providers like NetEnt, IGT and Microgaming, not just 1,500 cookie-cutter slot clones.
New Releases
- Key Point: Frequent new titles give you something to look forward to. They also show that the casino maintains close relationships with top providers.
- What We Do: We track the “New Games” tab weekly or monthly. A good casino adds at least 5-10 new games from established names or promising newcomers to their lobby each month.
Range of Categories
- Why It Matters: Not everyone is a slot enthusiast; some players want live roulette, while others prefer poker. A well-rounded selection means you won’t get bored.
- Good vs Bad: The top-tiered casinos feature a dedicated live dealer lobby with multiple variations of blackjack, roulette, and game-show-style titles. A mediocre casino might only have a few old-school table games and dozens of 3-reel slots.
Exclusive Games
- Excitement Factor: Casinos with exclusive or branded games often provide a unique experience. For example, a slot might be themed around a famous brand or sports team.
- Red Flag: If a casino calls something “exclusive,” but it’s a clone of a well-known slot with a different name, that’s disappointing. Indeed, exclusive titles should be unique slot or table games only available at that casino. A downranking will come if the casino only adds its logo to existing games.
Filtering and Search
- User-Friendly Tool: A solid filtering system can sort by provider, volatility, RTP, or theme (e.g., ‘Egyptian’ slots). The more filtering options, the better.
- Frustrating Experience: Sites without a search function or incomplete filters require endless scrolling to find a single game. This is frustrating.
Quality of Suppliers
- Recognisable Providers: Names like NetEnt, Microgaming, and Evolution are typically safe bets. They are known for fair RNGs and top-notch gameplay.
- Caution: Some unknown providers are hidden gems, but we do extra research to confirm that they’re licensed, tested, and free of software glitches.
Independent Testing
- Why It Matters: Third-party auditors (e.g., eCOGRA, iTech Labs, Gaming Labs InternationaI) ensure the games are random and pay out fairly.
- Our Check: We check for certifications and whether the casino publicly shares monthly payout reports. If it does, that’s a sign of transparency.
Payment Methods (15% Weighting)
Convenient banking methods and fair payout procedures are cornerstones of a good casino experience. You shouldn’t have to jump through hoops or wait forever to get your winnings.
Deposit Methods
- What We Look For: Visa, Mastercard, e-wallets (PayPal, Skrill, Neteller), prepaid vouchers (Paysafecard), bank transfers, and region-specific solutions.
- Example of Good Practice: A casino that supports various methods with no hidden fees and instantly processes deposits.
- Example of Bad Practice: Limited deposit methods that force players to use high-fee services, with slow or incomplete deposit confirmations.
Deposit Limits
- Clarity: We want the minimum and maximum deposit amounts clearly stated. Some casinos hide these limits until you’re at the cashier page, which can be frustrating.
- Our Method: We try depositing different amounts to confirm that the stated limits match the actual system.
Bonus Eligibility
- Caveat: Some casinos exclude e-wallet deposits (like Neteller or Skrill) from bonus eligibility, which can be a rude surprise. We always double-check this and report our findings.
- Real-Life Checks: We ensure we can still claim the welcome bonus if we deposit using our preferred method. If it’s excluded, we will note whether this is disclosed upfront.
Withdrawal Methods
- One-Wallet Policy: Many casinos require you to withdraw using the same method you used to deposit—this is for anti-money-laundering reasons.
- What We Expect: There should be enough withdrawal options so that users are not forced into a single route (e.g., bank transfer) that might have extra fees or longer wait times.
Withdrawal Times
- Importance: One of players' most significant pain points is waiting too long for a cashout. A processing time of 24-48 hours is standard.
- Red Flag: Some casinos stall withdrawals for a week or more or place arbitrary “pending” periods to pressure you into cancelling your withdrawal and gambling more.
Withdrawal Fees
- User Unfriendly: We dislike any charges for withdrawing money. However, a small fee might be acceptable if clearly mentioned (e.g., a £5 charge for bank transfers under £100).
- What We Test: We withdraw small and more significant amounts to see if any “surprise” fees that weren’t spelt out beforehand appear.
Cryptocurrencies
- Growing Trend: Many players appreciate the anonymity and speed of Bitcoin, Ethereum, or other altcoins. However, the UKGC currently does not license any crypto casinos.
- Good Crypto Casinos: Instant or near-instant transactions, minimal fees, and real-time exchange rates displayed.
- Possible Issues: Unclear or volatile conversion rates or minimal KYC checks that could raise a red flag with regulators.
Licensing and Regulation (15% Weighting)
Licenses matter because casinos operate under specific rules designed to protect players. A reputable license is your ticket to a fair gaming environment.
Reputable License(s)
- Top Authorities: The UK Gambling Commission, Malta Gaming Authority, and Gibraltar Regulatory Authority are among the most respected.
- Real-World Tip: We verify the license number on the regulator’s website. If it doesn’t match, we walk away and tell you to avoid the site.
Verified Certificates
- Display Matters: Look for clickable seals or license numbers that lead to official sites. A good casino wants to boast about its credentials.
- Potential Scam: Some shady sites copy the logos of reputable regulators or test labs without any actual link or verification.
License Breaches
- Why We Care: If a casino has been fined or warned, it might indicate that it has engaged in dodgy practices, such as withholding payouts or misleading advertising.
- Digging Deeper: We do detective work on news sites, forums, or the regulator’s website to see if the brand or its owner has faced issues. For example, the UKGC lists all license breaches on its site.
Safety and Security (10% Weighting)
Sharing your personal and financial details online requires trust. We examine how casinos protect your data, handle account verifications, and separate player funds.
SSL/TLS Encryption
- Non-Negotiable: Any online platform handling transactions must use secure encryption (ideally 128-bit or 256-bit). Also, TLS is more robust than the rather old-school SSL.
- Test It Yourself: Click the padlock icon in your browser—if the security certificate is valid and up to date, that’s a good start. Always ensure the URL begins with HTTPS.
Data Protection Policies
- Privacy is Key: We read the privacy policy to see if they store or share your data with third parties. Under GDPR (in many regions), they must inform you.
- User Experience: We check whether they mention how cookies are used and whether they provide an easy way to opt out of marketing communications.
The KYC Process
- What to Expect: Upload proof of ID, address verification, and possibly a copy of the payment method. This is standard in regulated online casinos.
- Good vs Bad: A good operator identifies and verifies the required documents quickly (1-2 days max). A bad one repeatedly requests new forms of ID and delays withdrawals indefinitely, hoping you’ll give up.
Source of Wealth
- High Rollers: If you deposit large amounts, the casino may ask for extra documents. This is normal when complying with anti-money laundering laws.
- Warning: We consider it questionable if they ask for unreasonable or overly invasive documents without explanation. You have been warned!
Separate Player Funds
- Why It Matters: If the casino faces financial issues, player balances should be protected. Some regulators require segregated accounts specifically for player deposits and winnings.
- Verification: A strong licensing body typically enforces this rule. We also look for the casino’s statement on storing player funds.
Responsible Gambling (10% Weighting)
Gambling should be fun, not destructive to your mental and financial health. The best-rated casinos offer practical responsible gambling tools to help you stay in control.
Deposit and Spending Limits
- Quick Setup: Ideally, you can set your own daily, weekly, or monthly limits via your account dashboard.
- Testing It: We try to exceed our limit to confirm whether or not the casino blocks further deposits.
Self-Exclusion and Cool-Off Periods
- No Messing Around: True self-exclusion locks you out of your account for a chosen period, with no exceptions.
- Good Example: The casino sets up a range of periods—like 24 hours, 7 days, 6 months, or 5 years—and honours them without question.
- Bad Example: A site that doesn’t offer a self-exclusion tool or requires you to email multiple departments to freeze your account.
Reality Checks
- Pop-Up Alerts: These are little reminders that appear after every hour of play or after a certain wagering amount.
- Why We Like It: It gently encourages you to take a break, stretch your legs, and monitor your bankroll.
Links to Support Organisations
- Crucial Resource: Affiliations with GamCare, Gamblers Anonymous, or local helplines show that the casino cares about player well-being.
- Real-World Check: We click these links to see if they lead to legitimate support websites and phone numbers.
Customer Support (10% Weighting)
When things go wrong, or you have a quick question, a helpful support team is reassuring.
Availability
- Round-the-Clock? We prefer 24/7 support. If the opening hours are clearly stated, anything less is workable. However, it can be frustrating if you need help at midnight and they’re closed until morning.
- Testing It: We intentionally contact support at different times, including weekends, to see if the “24/7” claim holds up.
Channels
- Why It Matters: Different people have different preferences—live chat for speed, email for detailed queries, phone for a personal touch.
- Good Practice: Offering multiple options, including a WhatsApp or social media channel if they’re forward-thinking.
Professionalism
- Reading the Room: Polite, well-informed agents should address you by name and provide coherent answers.
- Red Flag: If they give canned responses or fail to read your question correctly, you may go in circles, especially if they copy-paste from a script. AI chatbots are even worse!
Response Times
- Expectations: Replies to live chat messages should be near-instant or within a minute or two. Email replies might take 24 hours, but any longer, and they start to feel unprofessional.
- Real-World Example: We’ll ask a complex question about bonus terms and time how long it takes for them to answer, escalate or consult a supervisor.
Comprehensive FAQs
- Why They Matter: A well-written FAQ helps you solve common issues—like resetting your password or verifying your account—without contacting support.
- We Test It: We try to find answers in the FAQ before we ask for support. If it’s thorough and up to date, we will give extra credit.
Company Ownership and Reputation (5% Weighting)
The people behind the curtain matter. A casino’s reputation is shaped by its parent company’s ethics, track record, and approach to player satisfaction.
Transparent Ownership
- What We Want to See: An “About Us” page with clear information about the holding company, its address, and possibly the backgrounds of its executive team.
- Bad Sign: There are vague references to an offshore corporation in different parts of the site, with no accurate details or contradictory addresses.
Established History
- Longevity Matters: We look at a brand’s longevity. A brand that has thrived for a decade usually indicates stability.
- We Dig: WHOIS data and corporate reports. If the company changes ownership multiple times, we’ll note any controversies in our reviews.
Sister Sites
- Potential Bonus: If the operator runs multiple reputable brands, that can mean shared loyalty benefits or a wider network of games.
- But… If one sister site has a reputation for shady tactics, we’re cautious about the entire group, and we’ll add them to our casino blacklist.
No Predatory Advertising
- What This Means: No misleading ads, pop-ups, or spammy tactics. We also look at how the casino advertises on affiliates and third-party sites.
- Our Experience: If we sign up for emails, we expect relevant promos, not daily spam or exploitative language pushing you to gamble more.
Conflict Resolution
- Mediation Options: Legit casinos often partner with Alternative Dispute Resolution (ADR) services to handle unresolved player issues.
- Good Indicator: They list clear steps to follow if you’re unhappy: first, contact support, then escalate to a manager, and finally, contact an ADR if needed.
- Bad Indicator: Vague or non-existent instructions for disputes leave players stranded when issues arise.
User Experience and Site Design (5% Weighting)
Finally, aesthetics and usability. A clunky interface can ruin your fun even if a casino has the best bonuses and games. We explore design, speed, mobile compatibility, and more.
Overall Design
- Clean & Intuitive: Menus that make sense, minimal pop-ups, and well-labelled categories so you can find what you want fast.
- Our Test: We basically “live” on the site for a while, navigating different pages and noting anything awkward, broken, or unexpected.
Mobile Compatibility
- Modern Must-Have: With so many players using smartphones and tablets, a casino must work seamlessly on smaller screens.
- Native Apps vs Browser: We try both if they are available. Some casinos have great browser-optimised mobile sites but lacklustre native apps (and vice versa).

Localisation
- Language Options: Multi-lingual support is a big plus, especially if you’re uncomfortable reading terms in English.
- Cultural Relevance: Localised payment options or promotions themed around local holidays can make overseas players feel at home.
Accessibility
- Inclusivity Matters: Offering text resizing, high contrast modes, or compatibility with screen readers helps players with disabilities.
- What We Do: We test the site using standard accessibility tools or screen readers to determine whether essential features remain usable.
Interactivity
- Beyond Basic Gameplay: Tournaments, missions, loyalty “quests,” or leaderboards can spice up the gambling experience.
- We Participate: If there’s a slot tournament, we’ll join and note whether the rules are clearly stated, whether the leaderboard updates in real-time, and whether prizes are awarded promptly.
Feedback From Players
- Community Insight: We frequent gambling forums and social media groups to see if players rave or rant about the site’s interface and overall vibe.
- Cross-Checking Claims: If players complain about site crashes, we’ll try to replicate those conditions ourselves.
Key Takeaways: How We Rate Casinos
- Trust and Expertise Matter: GamblingAuthority boasts over 25 years of industry experience and regularly offers unbiased, detailed reviews to ensure accuracy and relevance.
- Comprehensive Review Criteria: Each casino is evaluated against 9+ key factors, from bonuses and game selection to licensing, security, and customer support.
- Transparency: GamblingAuthority isn’t afraid to call out bad practices, misleading advertising, or unfair bonus terms to protect players from rogue casinos.
- Bonuses and Promotions: Casinos are assessed on their sign-up bonuses, free spins, cashback offers, and loyalty programmes, focusing on fairness, transparency, and reasonable wagering requirements.
- Game Selection and Quality: The best casinos feature thousands of games across multiple categories, exclusive titles, and partnerships with reputable providers like NetEnt and Microgaming.
- Fast and Secure Payments: Deposit and withdrawal options are tested for speed, transparency, and reliability, with preference given to casinos offering instant or near-instant payouts. Hidden fees are flagged.
- Licensing and Regulation: Casinos must hold reputable licences (e.g., UKGC, MGA) and display verifiable certifications to ensure a safe and fair gaming environment.
- Responsible Gambling Commitment: High-rated casinos offer tools like deposit limits, self-exclusion options, and reality checks while partnering with responsible gambling organisations like GamCare.
- Customer Support Excellence: Round-the-clock support via live chat, email, or phone is a must, with casinos rated on response times, professionalism, and the clarity of their FAQs.
- Player-Centric Approach: GamblingAuthority prioritises user experience, ensuring casinos offer mobile-friendly designs, accessibility options, and clear, localised payment methods and terms.
Transparent Reviews Backed by Data
There you have it. We've now covered precisely how we rate casinos. When assessing an online casino, we systematically apply all the review criteria listed above. This ensures we provide a comprehensive, balanced, and honest assessment of each site.
We always start with the non-negotiables, such as licensing, security, and responsible gambling. Once we’re satisfied that the casino is safe, we consider the quality enhancers, such as a wide game selection, generous bonuses, fair T&Cs, fast payouts, and top-tier customer support.
Only the best online casinos meet our exceptionally high standards with minimal flaws. In contrast, lesser-rated casinos may falter in crucial categories like payout speeds, transparency, or customer support responsiveness. We also have no issue with calling out rogue casinos and their dodgy practices, which is essential for making informed decisions.
By assessing a casino in each area, you will understand how trustworthy, user-friendly, and enjoyable a platform is before deciding where to play.
How We Rate Casinos FAQ

Peter Wilson is the Editor-in-Chief at GamblingAuthority. He has more than nine years of experience from the iGaming industry and is a valuable resource for everything related to online casinos.
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