How We Rate

Our Review Methodology at Mdcalibration

At Mdcalibration, every casino sister site review published on mdcalibration.co.uk is the result of a thorough, structured, and independent evaluation process. Our founder and lead reviewer, James Wilson, personally tests each site before a single word of a review is written. We believe UK players deserve honest, detailed, and up-to-date information before they commit their money to any gambling platform, and our methodology is designed to deliver exactly that.

This page explains precisely how we assess sister sites, what criteria we use, how much weight each factor carries, and how we ensure our conclusions remain free from operator influence.

Step-by-Step: How James Wilson Reviews a Sister Site

Step 1: Initial Identification and Network Research

Before testing begins, James researches the operator network behind the site. This includes identifying the parent company, confirming which other brands share the same platform, software, and licence, and cross-referencing public records held by the UK Gambling Commission. Understanding the network context is essential for sister site reviews, as players who have already used one brand in a network are directly affected by shared bonus restrictions and account policies.

Step 2: Licence and Regulatory Verification

James manually checks the UK Gambling Commission (UKGC) register to verify that the site holds a valid, active licence. He also checks for any enforcement actions, fines, or licence suspensions associated with the operator. This step is non-negotiable and cannot be substituted with information provided by the operator itself.

Step 3: Account Registration and Deposit

James creates a real player account using his own details and makes a genuine deposit using his own funds. This is a critical part of our process. We do not review sites based on demo access or press materials supplied by casinos. Real money is deposited so that every aspect of the player journey, from KYC checks to payment processing times, can be evaluated authentically.

Step 4: Bonus Claiming and Wagering

Where a welcome bonus or promotion is available, James claims it and works through the wagering requirements. He reads the full terms and conditions, notes any unusual restrictions, and assesses whether the offer represents genuine value for UK players.

Step 5: Game Testing and Platform Navigation

James plays a representative selection of games across different categories, including slots, table games, and live casino where available. He evaluates loading times, game variety, software providers, and the overall quality of the gaming experience on both desktop and mobile.

Step 6: Customer Support Interaction

James contacts the customer support team through available channels, typically live chat and email, posing realistic queries. Response times, accuracy of information, and professionalism are all recorded.

Step 7: Withdrawal Request

A withdrawal is requested to assess processing speed, any additional verification requirements, and the smoothness of the cashout process. This is one of the most telling tests of a casino's reliability.

Step 8: Scoring and Write-Up

Once all testing is complete, James scores the site across our six rating criteria and writes the review. No review is published without completing every step above.

Our Rating Criteria and Weightings

Each site is scored out of 10 in six categories. A weighted overall score is then calculated based on the importance of each factor to UK players.

Rating Criteria	Weighting	What We Assess
Licensing and Safety	25%	UKGC licence status, responsible gambling tools, data security, operator history
Bonuses and Promotions	20%	Welcome offer value, wagering requirements, bonus terms fairness, ongoing promotions
Game Selection	20%	Volume and variety of games, software providers, live casino quality, RTP transparency
Payment Methods	15%	Deposit and withdrawal options, processing times, fees, UK-relevant banking support
Customer Support	10%	Availability, response speed, quality of assistance, support channels offered
Mobile Experience	10%	Mobile browser performance, app availability, game compatibility, ease of navigation on mobile

Our Rating Scale Explained

We use a 1 to 10 rating scale for each individual criterion and for the overall weighted score. Here is what each range means:

9.0 – 10.0: Excellent. Among the very best available to UK players. Highly recommended.
7.0 – 8.9: Good. Above average performance with only minor weaknesses. Recommended.
5.0 – 6.9: Average. Acceptable but with notable drawbacks. Recommended with caution.
3.0 – 4.9: Below Average. Significant issues that will affect most players. Not recommended for most.
1.0 – 2.9: Poor. Serious concerns identified. We advise players to look elsewhere.

How Mdcalibration Stays Unbiased

Independence is the foundation of everything we publish. Here is how we protect our editorial integrity:

No operator payments for reviews. Mdcalibration does not accept payment from casinos or operators in exchange for positive coverage or higher ratings. Our scores reflect our genuine findings, not commercial arrangements.
Affiliate relationships are disclosed. Like most review sites, mdcalibration.co.uk may earn a commission when a reader signs up to a site through our links. This is disclosed clearly. Crucially, affiliate status has no bearing on the score a site receives. We have given low ratings to sites we are affiliated with when the evidence demands it.
Reviews are updated regularly. Casinos change. Bonuses change. Licences can be revoked. James revisits published reviews on a scheduled basis and updates scores when circumstances change. A review from early 2026 will be checked and revised if the operator's situation shifts.
We publish negative findings. If a site fails to process a withdrawal promptly, imposes unfair bonus terms, or delivers poor customer service during testing, those findings are reported in full. We do not soften criticism to protect business relationships.
James Wilson is identifiable and accountable. Our reviews are written by a named individual with a verifiable background in the UK gambling review space. We are not a faceless content operation. James stands behind every score published under his name.

A Note on Sister Sites Specifically

Sister site reviews require an additional layer of scrutiny that generic casino reviews do not. Because sister sites share infrastructure, bonus terms often apply across an entire network, meaning a player who has claimed a welcome bonus at one brand may be ineligible at its sister sites. James specifically investigates and clearly documents these cross-brand restrictions in every review, so UK players understand exactly where they stand before registering a new account.

If you have questions about our methodology or wish to report inaccurate information on any of our reviews, you are welcome to contact