How We Rate Casinos

At oli-london.com, we evaluate online casinos with a rigorous, evidence-based methodology to help UK players make informed decisions. Our reviews focus on safety, fairness, and player experience. Below, we outline the criteria we use to assess casinos like William Hill, listed in order of importance.

1. Licensing & Regulation

Player safety is paramount. We prioritise casinos licensed and regulated by trusted authorities, including:

• UK Gambling Commission (UKGC) – The primary regulator for UK-based operators
• Malta Gaming Authority (MGA) – A well-respected EU licensing body
• Curaçao eGaming – An alternative Caribbean licence holder
• Local GB licenses and additional jurisdictional approvals

We verify licensing status and check for any regulatory violations or complaints with the Gambling Commission before recommending a casino.

2. Game Selection & Software Providers

A quality casino offers diverse gaming options from reputable software developers. We assess:

• Slot Games – Variety, themes, RTP (Return to Player) percentages, and frequency of new releases
• Live Casino – Live dealers, table variety, streaming quality, and betting limits
• Table Games – Blackjack, roulette, poker, baccarat, and other classic games
• Software Providers – Partnerships with industry leaders such as Microgaming, NetEnt, Playtech, and others

3. Bonus Terms & Wagering Requirements

We carefully review bonus promotions and their conditions to ensure fairness for players:

• Terms & Conditions (T&Cs) – Clarity, accessibility, and any hidden restrictions
• Rollover/Wagering Requirements – The multiplier on bonus funds (e.g., 35x, 50x) before withdrawal
• Maximum Cashout Limits – Caps on winnings from bonus spins or free bets
• Expiry Dates – How long players have to claim and use bonuses

4. Payment Methods & Withdrawal Speed

We evaluate the breadth and efficiency of financial options:

• Payment Methods – Debit/credit cards, e-wallets (PayPal, Skrill, Neteller), bank transfers, and cryptocurrencies
• Withdrawal Speed – Average processing times for cash-outs (instant, 1-2 hours, 1-3 days, etc.)
• Fees – Whether deposits or withdrawals incur charges
• Limits – Minimum and maximum transaction amounts

5. Customer Support

Responsive, knowledgeable support is essential for resolving issues quickly:

• 24/7 Live Chat – Immediate assistance during all hours
• Email Support – Response times and quality of answers
• Phone Support – Availability and call handling
• Responsiveness – How quickly and accurately the support team addresses player queries

6. Mobile Experience

Most players access casinos via mobile devices. We assess:

• Responsive Design – Seamless gameplay on smartphones and tablets
• Dedicated Apps – Availability on iOS and Android with user ratings
• Performance – Load times, graphics quality, and stability
• Navigation – Ease of finding games, account settings, and customer support

7. Responsible Gaming Tools

We commend casinos that prioritise player welfare through robust responsible gaming features:

• Deposit Limits – Daily, weekly, or monthly spending caps
• Self-Exclusion – Temporary or permanent account closure options
• Cooling-Off Periods – Mandatory breaks from gambling
• Reality Checks – Notifications during play sessions
• Gambling Support Resources – Links to GamCare, BeGambleAware, and other organisations

8. Our Rating Scale

We rate casinos on a scale of 1 to 10, with the following breakdown:

• 9-10 (Excellent) – Outstanding in most areas, with strong regulation, diverse games, fair terms, and excellent support
• 7-8 (Very Good) – Solid performance across key criteria, minor areas for improvement
• 5-6 (Good) – Meets basic standards but may lack in certain areas such as game selection or mobile optimisation
• 3-4 (Fair) – Significant concerns in one or more critical areas; not recommended for most players
• 1-2 (Poor) – Major regulatory, safety, or fairness issues; not recommended

Disclaimer: Our ratings are based on independent research and reflect conditions as of 2026. Casino offerings, terms, and regulations change regularly. Players should always verify current licensing status with the UK Gambling Commission and review the most up-to-date terms before playing. This review is for informational purposes and does not constitute financial or gambling advice.