How we rank - Criteria that we look into in our reviews

18 May, 2026

Every casino you see on BestCasino has undergone a strict evaluation process. We want to be thorough and transparent in our process. We want to make sure we cover the negatives, as well as the positives. But we also want to be consistent.

What we do?

The first step is to make sure the casino is licensed and legitimate, after which we assess it based on criteria such as bonuses, games, and payment methods.

How we do it?

Our extensive industry knowledge and experience mean we can quickly verify key information (licenses, audit reports), find issues that others may overlook, and conduct research into player complaints.

Why it matters?

Adopting a structured review process ensures we remain consistent. It keeps us honest and transparent, but it also promotes objectivity over subjectivity, producing fair, critical assessments that aren’t driven by a reviewer’s specific preferences. 

Safety

A recognised licence is just the first step to verifying that a casino is secure and fair. It should also protect players using state-of-the-art encryption technology and data protection protocols. A legitimate casino should be fair and secure, and it should be transparent enough to display the factors that make it fair and secure.

Licences

The United Kingdom Gambling Commission (UKGC) has some of the strictest regulations in the iGaming sector, and all UK-focused online casinos need a UKGC licence to operate legally. These licences are often granted to parent companies that operate multiple sites—we check them to verify their source and legitimacy.

Many casinos also hold licences from authorities in regions like Alderney, Malta, and Gibraltar, with these licences granting the operator access to various global markets.

While not essential to operate in the UK, additional licences can validate a casino and verify its legitimacy in other jurisdictions. We may mention these other licences, but primarily, we focus on UK-relevant ones.

RTP

iGaming developers set a game’s RTP, but they often include a range from which the casino can choose. It means that a specific game can have a very different RTP from one casino to the next.

We check the average RTPs of a casino’s games to see how they align with the industry average and determine whether they are picking high RTPs or consistently opting for the lower range. Where available, we will highlight the casino’s average returns and discuss other key factors, such as major jackpot payouts.

Responsible gaming

Every licensed casino needs a responsible gambling program, so our reviewers will look for responsible gambling guidance, assessments, tools, and resources. The bare minimum requirement is a responsible gambling page with links to helpful sites, but the best casinos take things a step further, with tools such as:

  • Self-assessment tests to spot the signs of problem gambling.
  • Deposit/wager limits for setting budgets and preventing excessive loss.
  • Time-outs for players to take a break for a fixed period of time.
  • Reality checks that remind players how long they have been online and how much they have wagered/lost in that time.
  • Self-exclusions allow players to exclude themselves from the site.

Players should feel safe when they gamble. They should know that they have support if they need it and must have access to various tools to protect them and their finances.

Bonuses, promos, and wagering requirements

A welcome bonus is important, but it’s not everything. We make sure that the casino is as generous to loyal players as it is to new ones, highlighting promotions such as reload offers, slot tournaments, loyalty schemes, and VIP programs.

What’s more, we go beyond the promotional text and dig into the terms that define the true worth of a bonus, including:

  • Minimum deposit requirements and how accessible they are to the average player.
  • The size of the wagering requirement, if applicable.
  • If there are any win caps.
  • The time periods for using bonus credits/free spins, as well as for completing wagering requirements.
  • Payment method restrictions (such as exclusions for specific web wallets).
  • The value of each spin in a Free Spin promotion.
  • Qualifying games and excluded games during the wagering period.
  • Withdrawal limits and additional requirements.

If there’s a tricky term or a hidden condition, we’ll find it and explain it clearly.

Game selection & game providers

More isn’t always better. A good casino will offer games from various developers and will update its selection regularly. Variety is key. 

We look for popular developers like Evolution Gaming, NetEnt, Playtech, Blueprint Gaming, Pragmatic Play, and Play’n GO, as well as categories that UK players seek:

  • Megaways slots
  • Live dealer table games and game shows
  • Progressive jackpot slots
  • Classic slots and bonus slots
  • Exclusive slot machines
  • Instant games and crash games
  • RNG table games (roulette, blackjack, baccarat)
  • Bingo and keno games

Payment methods

What methods can you use? Do they charge any fees, and how fast are the withdrawals? Speed and convenience are major sticking points for most players, so we thoroughly test banking options.

We look for popular banking options and compare speeds against other top casinos. We also make sure the listed withdrawal speeds reflect the actual ones, while scrutinising the verification process.

A good casino should offer fast withdrawals across varied payment methods, preferably with no fees and with hassle-free player verification.

Customer service

We check customer support capabilities by sending emails, opening support tickets, using live chat, and even calling the casino, where applicable. We evaluate their professionalism, response times, and helpfulness.

A good casino will offer multiple support options (such as live chat and email) and provide either 24/7 support or offer availability during peak times. You need to know that the casino will be there to assist you if and when you have a problem, so we test them multiple times and on separate days to fully evaluate their responsiveness.

As our goal is to evaluate the casino objectively, we also consider what other players are saying about customer support, and how the average user feels about the efficiency of the casino’s contact methods.

User experience

A good casino should be clean, clear, and responsive on all platforms.

Clear categorisation is essential in modern casinos. Many casinos aim to be bigger and better than their competitors, which means offering thousands of games. They need multiple menu options, search bars, and filters to help you browse these vast collections and ensure you’re not simply skimming through endless thumbnails.

Dynamic websites are important, as well, as they adjust according to your browser and window size.

Availability on mobile devices

As most players now use their phones at online casinos, mobile support is key. Many casinos have native apps, as well as mobile-friendly websites, but the quality can differ greatly. Mobile apps are notorious for being buggy and must be updated regularly. We download and test casino apps, check app update schedules and bug reports, use the mobile website, and compare experiences.

Rating

After conducting an extensive review and evaluation, we give each casino a score from 1 to 5 in the following areas:

  • Bonuses
  • Usability
  • Games
  • Customer service
  • Payments

We then calculate the average of these scores for a final casino review score out of 5. Anything above 4/5 is considered a very good rating, one that should appeal to most players, with high 4s rated as “excellent” and high 3s as “good”. Anything from 3 to 3.5 is average, while scores below this range mean the casino has a lot of work to do.

Players have more choices than ever when it comes to online casinos. The UK Gambling Commission alone lists over 870 remote licensed operators. With so many sites in operation, it’s hard to find the ones most deserving of your time and money, but our ratings help with that. We scrutinise licensed casinos, highlight key features, and make it easy for players to compare, contrast, and find the best iGaming destinations.