How We Rate Casinos

At FourWallsOnline.co.uk, our casino reviews — including Spinshark Casino — are based on a consistent methodology tailored for players in Great Britain. We prioritise the factors that matter most for safety, fairness, and player experience. Our review process is updated for 2026 and reflects current UK gambling standards. Below are the eight rating criteria we use, listed in descending order of importance.

1. Licensing & Regulation

We first check that a casino holds a valid gambling licence. For Great Britain, a UK Gambling Commission (UKGC) licence is essential and carries the most weight. We also consider licences from the Malta Gaming Authority (MGA) and note Curaçao-licensed sites, but these do not provide the same level of GB player protection. A local GB licence means stronger oversight, dispute resolution, and safer standards.

2. Game Selection & Software Providers

We evaluate the full game library, including online slots, live casino games, and table games such as blackjack, roulette, and baccarat. We look at the number of titles, variety of themes, and quality of software providers like NetEnt, Microgaming, Evolution, Play’n GO, and Pragmatic Play. Games must be fair, regularly tested, and available in GBP where applicable.

3. Bonus Terms & Wagering Requirements

Bonuses are only as good as their terms. We read the full T&Cs, checking wagering requirements, rollover rules, maximum cashout limits, game contribution percentages, and time limits. A high-value bonus with unfair rollover or hidden restrictions will lower the score significantly.

4. Payment Methods & Withdrawal Speed

We assess deposit and withdrawal options relevant to GB players, including e-wallets, bank transfers, debit cards, and where permitted, crypto. We test real withdrawal speeds, look for processing fees, minimum and maximum limits, and KYC verification requirements. Fast, hassle-free withdrawals earn higher marks.

5. Customer Support

We test support channels including 24/7 live chat, email, and sometimes phone. We measure response times, helpfulness, and whether support agents can resolve issues clearly in English. A responsive, knowledgeable support team improves trust and overall rating.

6. Mobile Experience

We review how the casino performs on mobile devices. This includes responsive design in mobile browsers, dedicated iOS and Android apps where available, loading speed, navigation, and whether the full game range is accessible. A smooth mobile experience is essential for modern players.

7. Responsible Gaming Tools

We check for player safety tools such as deposit limits, loss limits, session reminders, cooling-off periods, self-exclusion, and links to GAMSTOP. UKGC-licensed casinos must provide robust responsible gambling controls. A strong commitment to player protection positively influences our score.

8. Our Rating Scale

We score each casino on a 1–10 scale, with 10 being the highest possible rating. Scores are weighted based on the criteria above, with licensing and safety carrying the most influence.