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REVIEW: 21 Casino UK

By Momchil Chonov Gambling Expert & Content Lead
Our Contributors
Last Update: August 2025
Major Updates
  • Updated Jul 25, 2025: Research process initiated.
  • Updated Jul 31, 2025: Experts and contributors began hands-on testing.
  • Updated Aug 07, 2025: Primary reviewer started individual assessment.
  • Updated Aug 15, 2025: Review privately published for internal review.
  • Updated Aug 22, 2025: Review published publicly.
Overall Score
How does it work:

The Casino.net Overall Score is calculated automatically and based on hard facts about the operator, as well as on expert and user opinions.

Score Components and Weight:
  • 30% Casino.net Algo
  • 30% Expert Ratings
  • 30% User Ratings
  • 10% Web Ratings
How 21 Casino Compares:

21 Casino Casino has a Casino.net Overall score higher than 50% of all reviewed UK casinos.

Overall Score Distribution:
 7.3/10 or 73% High Score Naming: High The Casino.net Overall Score is calculated automatically and based on hard facts about the operator, as well as on expert and user opinions. by Casino.net
Bonus 100% up to £500 Welcome Bonus
Link Check Offer Here
Other Casinos 21 Casino Bonus
Full T&Cs Apply. 18+. New players only. Min deposit £10. Bonus funds are 121% up to £300 and separate to Cash funds. 35x bonus wagering requirements apply. Only bonus funds count towards wagering requirement. £5 max. bet with bonus. Bonus funds must be used within 30 days, otherwise any unused shall be removed. Terms Apply. GambleAware.org
License # 52894 Issued on 2018-10-29
All Ratings
  • 6.0/10
    Casino.net Score Based on our automatic algorithm
    Casino.net Score
    6.0
    The Casino.net Overall Score is calculated automatically and based on hard facts about the operator, as well as on expert and user opinions.
    Overall Score Distribution:
    • 30% Casino.net Algo
    • 30% Expert Ratings
    • 30% User Ratings
    • 10% Web Ratings
  • 9.2/10
    User Rank Based on 1 review
    User Rank
    9.2
    Our user rank is an aggregate rating based on all user ratings. When there are still no user ratings, the score distribution becomes as follows.
    Overall Score Distribution:
    • 40% Casino.net Algo
    • 40% Expert Ratings
    • 20% Web Ratings
  • 4.6/10
    Web Rank Based on opinions across the web.
    Web Rank
    4.6
    Our web rank is an aggregate rating based on the information from the Play Store, Apple App Store, Trustpilot, ahrefs.com Domain rating, and semrush.com authority score.
    Overall Score Distribution:
    • 30% Casino.net Algo
    • 30% Expert Ratings
    • 30% User Ratings
    • 10% Web Ratings
  • 7.5/10
    Expert Score Based on the tests of 6 experts.
    Expert Score
    7.5
    The expert score is an aggregate of all team members and contributors who worked on compiling this comprehensive review. Check out all our expert opinions and insights.
    Overall Score Distribution:
    • 30% Casino.net Algo
    • 30% Expert Ratings
    • 30% User Ratings
    • 10% Web Ratings
Slots: 2200+
RTP: 96.00%
Payout: 3 - 5 Days
Software:
Payments:
UK Players Accepted
Rate 21 Casino
Drag & Drop
21 Casino in the App Store

What We Don’t Like

  • Limited Live Casino Game Variety
  • No Filters for Slot Providers or Game Features
  • Minimal Social Media Presence
  • Vague Terms on Account Closure

Our Recommendations

  • Expand the Live Dealer Offerings
  • Revitalise and Grow Social Media Engagement
  • Enhance Image Optimisation
  • Add more Slot Filters
Momchil Chonov - Gambling Expert & Content Lead email
Gambling Expert & Content Lead
Momchil Chonov

Momchil Chonov brings over 17 years of experience in land-based casinos and online gambling content, offering a deep and well-rounded understanding of the gaming industry. His extensive background allows him to produce accurate, engaging, and insightful content for players of all skill levels. Passionate about responsible gambling and player education, Momchil is committed to providing trustworthy advice, in-depth reviews, and clear, easy-to-follow guides. His goal is to ensure every visitor enjoys online gaming in a safe, informed, and responsible way.

Know your limits Gamble Responsibly 18+
  • Keeping gambling fair and safe for all
  • Promoting and supporting responsible gambling
  • Testing online gambling safety and fairness since 2003
Page Content

21 Casino Features and Comparison

Ranked 8th out of 15 casinos in the United Kingdom.

21 Casino in the App Store
Play Here
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Website 21casino.com
Online Since 2018
Casino Type Instant Play, Mobile
Network White Hat Gaming
Licenses 52894, UK Gambling Commission
Welcome Bonus 100% up to £500 Welcome Bonus
Sign Up Time Instant
Min Deposit £10
Max Deposit No Limit
Max Withdrawal Monthly No Limit
Max Withdrawal Daily No Limit
Number of Games 2400+
Number of Slots 2200+
RTP 96.00%
Payout Speed 3 - 5 Days
Software Providers
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Payment Methods
, , , , , , , , , ,
PayPal Accepted No
Compatible Devices Android, iOS, Windows, and macOS
Restricted Countries AU, BE, DK, FR, DE, IT, NL, PT, SG, ZA, ES, CH
Awards Platform Provider of the Year 2022 - SBC Awards, Industry Innovation of the Year 2022 - SBC Awards, White Label Supplier of the Year 2021 - SBC Awards
Customer support FAQ, Email, Live Chat
Company White Hat Gaming Limited
Sister Sites Hopa, Spinland, The Grand Ivy, Diamond 7 Casino, 21Prive Casino, Spin Station, Casimba, Griffon Casino, Karamba, SpinYoo, Playzee, Dream Vegas, Miami Dice, Temple Nile, G'Day Casino, Hello Casino, Skol Casino, Slotnite, PlayGrand Casino
Affiliate program 21 Affiliates
Manual Flushing Yes
KYC Verification Yes

21 Casino Media

  • 21 Casino Home Page on Mobile

    21 Casino Home Page on Mobile

  • 21 Casino Slots on Mobile

    21 Casino Slots on Mobile

  • 21 Casino Table Games on Mobile

    21 Casino Table Games on Mobile

  • 21 Casino Live Casino on Mobile

    21 Casino Live Casino on Mobile

  • 21 Casino Home Page on Desktop

    21 Casino Home Page on Desktop

  • 21 Casino Slots on Desktop

    21 Casino Slots on Desktop

  • 21 Casino Table Games on Desktop

    21 Casino Table Games on Desktop

  • 21 Casino Live Casino on Desktop

    21 Casino Live Casino on Desktop

Ratings Breakdown

21 Casino scored 7.3 out of 10. The score is based on the following components, each with its respective weight:

Casino.net Algo

The Casino.net Algorithm is automatically calculated using objective data about the casino. Below is the score for 21 Casino based on all criteria:

Our Criteria Casino.net Percentage Distribution How 21 Casino Scored
Geo License
15 %
Score meaning
15 %
  • 15% The casino has a license for this country.
  • 0% The casino doesn’t have a license for this country.
 15 % 21 Casino has a license for this country.
Responsible Gambling Systems
5 %
Score meaning
2 %
  • 5% All features available.
  • 0% No features available.
 2 % 21 Casino offers deposit limits, self-exclusion.
Safety Technology and Privacy Protection
5 %
Score meaning
5 %
  • 1% Casino uses HTTPS.
  • 1% Cookie warning.
  • 1% Customizable cookie settings.
  • 1% Anti-malware and spyware certificate.
  • 1% Password protection and checks against data breach.
 5 % 21 Casino uses HTTPS and has cookie warning, customizable cookie settings, anti-malware and spyware certificate, password protection and checks against data breach.
Safety & Responsible Gambling 2.5/10 or 25 % 2.1/10 or 21 %
Criteria Casino.net Percentage Distribution How 21 Casino Scored
Number of Games
5 %
Score meaning
1 %
  • 5% Has more games than 80% of all reviewed casinos.
  • 4% Has more games than 70% of all reviewed casinos.
  • 3% Has more games than 60% of all reviewed casinos.
  • 2% Has more games than 50% of all reviewed casinos.
  • 1% Has less games than 50% of all reviewed casinos.
  • 0% Has less than one hundred games.
 1 % 21 Casino has less games than 50% of all reviewed casinos.
Number of Slots
5 %
Score meaning
1 %
  • 5% Has more slots than 80% of all reviewed casinos.
  • 4% Has more slots than 70% of all reviewed casinos.
  • 3% Has more slots than 60% of all reviewed casinos.
  • 2% Has more slots than 50% of all reviewed casinos.
  • 1% Has more than one hundred slots.
  • 0% Has less than one hundred slots.
 1 % 21 Casino has at least one hundred slots.
Number of Live Games
3 %
Score meaning
3 %
  • 3% Offers all the most popular live casino games – roulette, blackjack, baccarat, Casino Hold’em, Three-Card Poker, Hi-Lo (or Sic Bo).
  • 2% Misses one or more of the most popular live games but has the three most important ones – roulette, blackjack and baccarat.
  • 1% Doesn’t offer either live roulette, blackjack or baccarat.
  • 0% Doesn’t offer live games.
 3 % 21 Casino offers live roulette, blackjack, baccarat, Casino Hold'em, Three-Card Poker, and Hi-Lo.
Number of Software Providers
2 %
Score meaning
2 %
  • 2% Has games by more software providers than 50% of all reviewed casinos.
  • 1% Has games by less software providers than 50% of all reviewed casinos.
  • 0% Has only one software provider.
 2 % 21 Casino has games by more software providers than 50% of all reviewed casinos.
Games 1.5/10 or 15 % 0.7/10 or 7 %
Criteria Casino.net Percentage Distribution How 21 Casino Scored
Overall RTP
8 %
Score meaning
0 %
  • 8% Has better RTP than 90% of all reviewed casinos.
  • 7% Has better RTP than 80% of all reviewed casinos.
  • 6% Has better RTP than 70% of all reviewed casinos.
  • 5% Has better RTP than 60% of all reviewed casinos.
  • 4% Has better RTP than 50% of all reviewed casinos.
  • 3% Has better RTP than 40% of all reviewed casinos.
  • 2% Has better RTP than 30% of all reviewed casinos.
  • 1% Has better RTP than 20% of all reviewed casinos.
  • 0% Has RTP lower than 80% of all reviewed casinos.
 0 % 21 Casino has RTP lower than 80% of all reviewed casinos. (RTP: 96.00%)
Slots RTP
7 %
Score meaning
0 %
  • 7% Has better slot RTP than 90% of all reviewed casinos.
  • 6% Has better slot RTP than 80% of all reviewed casinos.
  • 5% Has better slot RTP than 70% of all reviewed casinos.
  • 4% Has better slot RTP than 60% of all reviewed casinos.
  • 3% Has better slot RTP than 50% of all reviewed casinos.
  • 2% Has better slot RTP than 40% of all reviewed casinos.
  • 1% Has better slot RTP than 30% of all reviewed casinos.
  • 0% Has slot RTP lower than 70% of all reviewed casinos.
 0 % 21 Casino has slot RTP lower than 70% of all reviewed casinos. (Slots RTP: 96.00%)
RTP 1.5/10 or 15 % 0.0/10 or 0 %
Criteria Casino.net Percentage Distribution How 21 Casino Scored
Welcome Bonus Max Amount
7 %
Score meaning
6 %
  • 7% Offers a higher bonus amount than 90% of all reviewed casinos.
  • 6% Offers a higher bonus amount than 80% of all reviewed casinos.
  • 5% Offers a higher bonus amount than 70% of all reviewed casinos.
  • 4% Offers a higher bonus amount than 60% of all reviewed casinos.
  • 3% Offers a higher bonus amount than 50% of all reviewed casinos.
  • 2% Offers a higher bonus amount than 40% of all reviewed casinos.
  • 1% Offers a lower bonus amount than most reviewed casinos.
  • 0% Doesn’t offer a welcome bonus.
 6 % 21 Casino offers a higher bonus amount than 80% of all reviewed casinos.
Wagering Requirement
6 %
Score meaning
4 %
  • 6% Offers better wagering contributions than 80% of all reviewed casinos.
  • 5% Offers better wagering contributions than 70% of all reviewed casinos.
  • 4% Offers better wagering contributions than 60% of all reviewed casinos.
  • 3% Offers better wagering contributions than 50% of all reviewed casinos.
  • 2% Offers better wagering contributions than 40% of all reviewed casinos.
  • 1% Offers better wagering contributions than 30% of all reviewed casinos.
  • 0% Offers worse wagering contributions than 70% of all reviewed casinos.
 4 % 21 Casino offers better wagering contributions than 60% of all reviewed casinos. (Average contribution: 30.00%)
Bonus Minimum Deposit
2 %
Score meaning
1 %
  • 2% Accepts a lower bonus minimum deposit than £10.
  • 1% Accepts a £10 bonus minimum deposit.
  • 0% Accepts a bonus minimum deposit higher than £10.
 1 % 21 Casino accepts a £10 bonus minimum deposit. (Minimum deposit: £10.00)
Bonus 1.5/10 or 15 % 1.1/10 or 11 %
Criteria Casino.net Percentage Distribution How 21 Casino Scored
Number of Payment Methods
2 %
Score meaning
2 %
  • 2% Offers more than 10 different payment methods.
  • 1% Offers fewer than 10 payment methods.
  • 0% Offers only one payment option.
 2 % 21 Casino offers more than 10 different payment methods (Payment methods: 10)
Fastest Withdrawal Time
3 %
Score meaning
3 %
  • 3% Offers instant withdrawals.
  • 2% Offers same-day withdrawals.
  • 0% Fastest withdrawals take more than one day.
 3 % 21 Casino offers instant withdrawals.
Minimum Deposit
1 %
Score meaning
1 %
  • 1% Accepts a minimum deposit of £10 or lower.
  • 0% Accepts a minimum deposit higher than £10.
 1 % 21 Casino accepts a minimum deposit of £10 or lower. (Minimum deposit: £10.00)
Maximum Deposit
1 %
Score meaning
0 %
  • 1% Accepts a higher maximum deposit amount than 50% of all reviewed casinos.
  • 0% Accepts a lower maximum deposit amount than 50% of all reviewed casinos.
 0 % 21 Casino does not specify a maximum deposit.
Cashout Limits
1 %
Score meaning
1 %
  • 1% There are no cashout limits.
  • 0% There are some cashout limits.
 1 % 21 Casino has no cashout limits.
Currencies
1 %
Score meaning
1 %
  • 1% Accepts local currency.
  • 0% Doesn’t accept local currency.
 1 % 21 Casino accepts £.
PayPal Accepted
1 %
Score meaning
0 %
  • 1% Accepts PayPal.
  • 0% Doesn’t accept PayPal.
 0 % 21 Casino doesn’t accept PayPal.
Payment 1.0/10 or 10 % 0.8/10 or 8 %
Criteria Casino.net Percentage Distribution How 21 Casino Scored
Customer Support Availability
3 %
Score meaning
3 %
  • 3% Customer support available 24/7.
  • 2% Customer support available every day but not at all hours.
  • 0% Customer support not available every day.
 3 % 21 Casino offers 24/7 customer support.
Customer Support Methods
3 %
Score meaning
2 %
  • 3% Customer service offers live chat, phone, and email support.
  • 2% Customer service doesn’t offer either live chat or phone support.
  • 0% Customer service offers only email support.
 2 % 21 Casino offers customer service but not both live chat and phone support.
Compatible Devices
2 %
Score meaning
2 %
  • 2% Software works seamlessly across all devices, old and new.
  • 1% Software works mostly on new devices.
  • 0% Software doesn’t work on all modern devices.
 2 % 21 Casino works seamlessly across all devices, old and new.
Languages
2 %
Score meaning
0 %
  • 2% Supports more than two languages.
  • 1% Supports two languages.
  • 0% Offers only one language.
 0 % 21 Casino does not specify supported languages.
User Experience 1.0/10 or 10 % 0.7/10 or 7 %
Criteria Casino.net Percentage Distribution How 21 Casino Scored
Casino Awards
4 %
Score meaning
4 %
  • 4% Has two or more casino awards.
  • 2% Has only one casino award.
  • 0% Doesn’t have casino awards.
 4 % 21 Casino has two or more casino awards. (Platform Provider of the Year 2022 - SBC Awards, Industry Innovation of the Year 2022 - SBC Awards, White Label Supplier of the Year 2021 - SBC Awards)
Other Products
4 %
Score meaning
0 %
  • 4% Offers sports betting, poker, bingo, and lotto, except for casino.
  • 3% Doesn’t offer all the other products – poker, bingo, sports betting and lotto.
  • 2% Offers only one other gambling product.
  • 0% Offers only a casino.
 0 % 21 Casino offers only a casino.
Public Company
2 %
Score meaning
2 %
  • 2% Public company.
  • 0% Not a public company.
 2 % 21 Casino is a public company.
Reputation and Awards 1.0/10 or 10 % 0.6/10 or 6 %
Casino.net Percentage Distribution 10.0/10 or 100 %
Casino.net Algo Score: 6.0/10 or 60 %

21 Casino has a higher Casino.net Algo score than 64% of all reviewed casinos.

100% 6.0 points out of 10.0
Safety 25%
Games 15%
RTP 15%
Bonus 15%
Payment 10%
User Experience 10%
Reputation and Awards 10%

User Ratings

There is only one player review. Be the next one to give your opinion.

What do you think
Rate 21 Casino
9.29.2 out 10 (based on 1 reviews)
  • 9-10 1 (100%)
  • 7-8 0 (0%)
  • 5-6 0 (0%)
  • 3-4 0 (0%)
  • 1-2 0 (0%)

Web Ratings

Here's how 21 Casino is rated across popular online platforms. We've averaged the available scores to give you an overall Web Rating.

Website Score Translating into score out of 10
App Store Not listed Not listed
Play Store Not listed Not listed
Ahrefs Domain Rating 58/100 5.8/10
Website Grader Security Not listed Not listed
Trustpilot 1.7/5 3.4/10
Reviews.io Not listed Not listed
Average Web Score: 4.6/10

Expert Opinions

Slots Expert's Opinion
Lindsey Jones - Slots Expert
Lindsey Jones Slots Expert

Lindsey has over 5 years of experience as a content writer in the igaming industry. Her focus and specialty are on slots. She has written numerous reviews for different games, always providing quality content.

Live and Table Games Expert's Opinion
Nikola Antonov - Live and Table Games Expert
Nikola Antonov Live and Table Games Expert

Nikola started working as a senior content writer in 2019, and since then, he has created numerous online casino reviews and articles about gambling in different countries. Over the years, he has been involved in projects that require a thorough analysis of various gaming platforms, which has helped him gain strong expertise. Thanks to his experience in writing reviews, Nikola has built a precise comparison model to overview and fairly assess online casinos and their services.

Social Media Expert's Opinion
Manuela Nikolova - Social Media Expert
Manuela Nikolova Social Media Expert

Manuela Nikolova serves as the dedicated social media reviewer for casino.net, providing expert analysis on how gambling brands engage with players and build trust across various platforms. She brings together a master’s degree in marketing and brand management with extensive experience in social media strategy and the creation of engaging gambling-related content. Above all, Manuela is deeply committed to player safety, consistently advocating for transparency and responsible gambling practices.

Legal Expert's Opinion
Momchil Petrov - Legal Expert
Momchil Petrov Legal Expert

With over a decade of legal experience in the online gambling industry, Momchil specializes in advising key stakeholders—including operators, providers, and affiliates—on compliance, licensing, and regulatory strategy. He has drafted hundreds of Terms & Conditions, Privacy Policies, and other key legal documents tailored to the online casino space. As a speaker at international gambling conferences, he stays ahead of industry trends and evolving legal standards. In his reviews, he takes a critical look at each casino—breaking down the fine print, highlighting potential red flags, and offering players clear, trustworthy insights grounded in real legal expertise.

IT Expert's Opinion
Plamen Spahiev - IT Expert
Plamen Spahiev IT Expert

Plamen is a seasoned IT expert with over 20 years of experience leading technical teams and designing secure, high-performance systems. With a strong background in cybersecurity, risk analysis, and infrastructure optimization, he ensures each casino meets high standards for technical reliability, speed, and data protection.

Slots Expert's Opinion

Our slot expert reviews the slot selection, software providers, and how easy it is to browse games. They also look at branded titles, jackpots, and features like tournaments and missions.

What I like:
  • Large Game Library with Regular Releases: 21 Casino boasts a large, up-to-date slot library featuring over 1,500 titles. New games from top providers are added often, making sure players always have something new to try.
  • Top Software Developers: Players get access to slots from over 100 developers, including respected and well-known studios like NetEnt, Big Time Gaming, Play 'n GO, Red Tiger, and Blueprint. This guarantees quality gameplay, graphics, and features.
  • Good Amount of Progressive Jackpots: Major progressive slots like Mega Moolah, Divine Fortune, and Hall of Gods are available, giving players a chance at massive wins.
  • Great Catalogue Navigation: The game lobby is divided into categories (New, Popular, Jackpots, etc.), making it relatively easy to browse. New game releases are also clearly highlighted.
What I don't like:
  • No Game Provider Filter: While categories are helpful, there's no way to filter by provider or features (e.g. Megaways, Free Spins), which restricts usability for advanced players.
  • Lack of Tournaments: Currently, there are no tournaments, duels, missions, or achievement-based gamification features to engage slot players either competitively or socially.
My recommendations:
  • Add a Provider Filter Option: Allow players to sort slots by provider, volatility, game type (e.g., Megaways, jackpots), or themes to improve the user-experience.
  • Add Tournaments and Missions: Slot duels, seasonal missions, or leaderboard challenges would add to the overall appeal of the platform and create a sense of community.

Live and Table Games Expert's Opinion

Our live and table games expert reviews the variety of table games, live dealer quality, and software providers. They also check table limits, usability, and availability, plus extras like bet behind, tournaments, and gamified features like badges and levels.

What I like:
  • Game Variety: Compared to other popular brands on the UK market, 21 Casino stands out for its impressive variety of table games. The dedicated RNG section boasts over 80 different titles with excellent in-game features. Notable games include 20p Roulette, Classic Blackjack Gold Series, and European Roulette Platinum.
  • Suitable Range of Betting Limits: The range of betting limits is fairly standard for the industry and offers considerable flexibility to players. Some roulette games accept minimum bets as low as 10p, while certain blackjack variants allow stakes of up to £5,000. Live roulette and blackjack tables offer even higher limits, making the site attractive for high-stakes players.
  • Leading Software Brands: 21 Casino partners with several of the most respected software providers in the iGaming industry. Here, you'll find top-quality table games from brands such as Evolution, Pragmatic Play, Real Gaming, Switch Studios, Games Global, and others. This allows the operator to maintain a diverse selection of high-quality game variations.
What I don't like:
  • Real Dealer Game Offerings: The live casino section lacks depth. Compared to other leading gambling sites, 21 Casino’s live offering is limited to around 35 titles. While most are powered by Evolution and Pragmatic Play – guaranteeing premium quality – I find the overall selection somewhat restrictive, especially for those seeking a more varied or interactive gaming experience.
My recommendations:
  • Live Casino Section: Adding more real dealer games from a wider range of software providers would significantly enhance the brand's appeal. This would help overcome its current limitations and attract a broader spectrum of players with varying preferences.

Social Media Expert's Opinion

Our social media expert checks which platforms the company uses, how often they post, and how well their content performs. They also look at follower count, brand tone, growth, and whether any channels are inactive or missing.

What I like:
  • 2.5K Followers on Facebook: This doesn't sound like much but compared to the brand's presence on other social media channels, it is. 21 Casino's Facebook page, although not actively maintained, provides a foundation for potential engagement.
  • Official Instagram Account: There's an Instagram account for 21 Casino with a humble following of 300-400 people. Similarly to Facebook, the page is not verified and is not actively managed. Still, it provides a platform for future engagement with players.
  • Potential for Social Media Expansion: The 21 Casino brand has significant potential for social media expansion. With the right content strategy and regular posting schedule, the casino could increase its following and strengthen its relationship with clients.
What I don't like:
  • Inactivity on Existing Social Media Accounts: 21 Casino is underusing its existing accounts on Facebook and Instagram. If we leave the potential for engaging existing and new players aside, some people might consider the inactivity a bad sign and end up choosing an alternative platform.
  • No Presence on Key Social Media Channels: The casino is missing out on popular social media channels like TikTok, YouTube, LinkedIn, and X. In this digital day and age, this is a significant disadvantage, especially compared to some of its competitors.
My recommendations:
  • Revitalise Facebook and Instagram Accounts: For starters, 21 Casino should prioritize its existing social media accounts. Increasing activity on Facebook and Instagram will help rebuild the connection with the existing audience and attract new followers.
  • Slowly Explore New Platforms: As a next step, the brand could start exploring other social media platforms, such as X and YouTube. This will give 21 Casino opportunities to become more easily recognisable and attract new players.

Legal Expert's Opinion

Our legal expert checks if the casino is licensed and since when. They review the terms to see if bonus abuse is clearly defined and flag vague or misleading clauses. The review also covers player protection, responsible gambling tools, ADR, GDPR compliance, and regulatory fines.

What I like:
  • Licensing and Regulation: 21 Casino holds valid licences from the UK Gambling Commission (Licence No. 52894, issued 29 October 2018) and the Malta Gaming Authority (Licence No. MGA/B2C/370/2017, issued 1 August 2018). It is operated by White Hat Gaming, meaning it shares the same licensing credentials as other casinos under its umbrella, such as Karamba.
  • Terms Structure: The General Terms & Conditions are comprehensive. They are logically ordered, with clear headings and up-front summaries aiding navigation. Changes to the T&C are notified to users, and there is clarity about precedence if terms conflict (section 1.1).
  • Bonus Abuse Definition: Bonus abuse and irregular play are expressly prohibited. Detailed, practical examples are set out in the General Terms (section 14) and Promotional Terms (section 2), giving players clear, actionable guidance on what is not allowed.
  • Responsible Gambling and ADR: 21 Casino outlines its safer gambling tools in the dedicated Responsible Gambling Policy. The operator features a three-tiered complaints process, which ends with independent ADR referral to eCOGRA (section 16), supporting fair dispute resolution.
  • Data Protection and GDPR Notes: The Privacy Policy is detailed and fully GDPR-compliant, outlining what data is processed, retention (generally up to five years), and rights to access/deletion. The split data controller arrangement between White Hat Gaming and Branders Limited is also transparently explained.
What I don't like:
  • Ambiguous Clauses and Policy Gaps: Some important terms allow for broad interpretation. Clauses on account closure "for any reason" (section 13.2) and actions tied to "suspicious activity" (section 7.3) or "repeated deposits and withdrawals without commensurate wagers" (section 7.2) are not precisely defined. This may cause unpredictability in how the operator enforces such action.
  • Limited Fund Protection: Section 7.1 states that player funds are held in a separate account but "not protected" in the event of insolvency. This meets only the Gambling Commission's lowest protection level. While highlighted, this is not well contextualised, leaving players at risk.
  • Regulatory Actions: In 2021, White Hat Gaming paid a £1.3m settlement to the Gambling Commission over AML and social responsibility failings at 21 Casino and related brands. Failings included inadequate source of funds checks and weak safer gambling interactions. However, I was pleased to see the company has committed to operational improvements since then.
My recommendations
  • Strengthen Fund Protection Disclosures: 21 Casino should provide clearer, more prominent explanations of the "not protected" funds status and what it means for players. It should ideally include practical examples or alternatives to reduce risk for customers.
  • Clarify Enforcement of Ambiguous Clauses: Providing concrete thresholds or case-specific examples for account closure and "suspicious activity" would offer customers more certainty and reduce the risk of inconsistent action.

IT Expert's Opinion

Our IT expert evaluates the site’s technical performance, covering security, HTTPS implementation, and core web metrics. They also check mobile optimization and the use of content delivery networks. Further review includes caching practices, hosting setup, and frontend diagnostics.

What I like:
  • Fast Initial Server Response Time: Excellent server response time of 169.23 ms.
  • HTTPS Usage: The website uses HTTPS, ensuring secure communication.
  • CDN Presence: Utilization of Amazon CloudFront CDN for efficient content delivery.
  • Mobile Optimization: Responsive design and PWA (Progressive Web App) support indicate good mobile optimization.
  • Security: HSTS is implemented, ensuring robust HTTPS practices.
  • Analytics:
    • Google Analytics for tracking.
    • Google Tag Manager for tag management.
    • Facebook Pixel and Skai for marketing and analytics.
  • JavaScript Frameworks: Use of modern libraries like React, AngularJS, Angular Material, and GSAP.
  • Hosting: Reliable and scalable hosting on Amazon Web Services (AWS).
What I don't like:
  • Image Optimization: Serving images in next-gen formats like WebP and AVIF is not fully utilized, with potential savings of 30 KB noted.
  • Unused JavaScript: The website includes unused JavaScript, leading to wasted resources. Example: Unused JS file from AWS WAF.
  • Minification: Some JavaScript and CSS files are not minified, affecting load times.
  • Caching: Inefficient use of caching strategies leads to suboptimal performance.
  • Structured Data Implementation: Improvement needed in structured data for better SEO practices.
  • Console Errors: Presence of errors in the console impacts site performance and user experience.
  • Viewport Meta: Ensure all pages have appropriate viewport meta tags for better mobile experience.
My recommendations:
  • Image Optimization:
    • Modern Image Formats: Utilize formats like WebP and AVIF to improve compression.
    • Lazy Loading: Implement lazy loading for offscreen images to improve initial load times.
    • Compression: Compress and resize images to optimal dimensions before serving them.
  • Reduction of Unused JavaScript:
    • Audit and Removal: Use tools like Webpack and PurifyCSS to identify and remove unused JavaScript files.
    • Deferring Non-Critical JavaScript: Defer the loading of non-essential scripts to enhance performance.
  • Minification:
    • CSS and JavaScript Minification: Use build tools such as Terser for JS and CSSNano for CSS to minify files.
    • Automated Build Processes: Implement automated pipelines to ensure all static assets are minified before deployment.
  • Caching Strategies:
    • Longer TTL Values: Implement longer TTL values for HTTP headers.
    • Client-Side Caching: Use service workers to manage caching on the client side for offline capabilities and faster reloads.
  • Structured Data:
    • Schema Implementation: Implement structured data adhering to schema.org to improve search engine visibility.
    • Validation: Use Google's Rich Results Test to validate structured data implementations.
  • Performance Enhancements:
    • Server Configuration Optimization: Optimize server settings and configurations to reduce response times.
    • Reverse Proxy Implementation: Use a reverse proxy to efficiently distribute server load.
    • Redirect Handling: Ensure proper and minimal use of redirects to avoid performance degradation.
  • Console Errors:
    • Audit and Fix: Regularly audit and resolve errors in the browser console.
    • Error Tracking: Implement error tracking tools like Sentry to monitor and fix issues proactively.
  • Viewport Meta:
    • Meta Tags: Ensure proper viewport meta tags are included on all pages.
    • Mobile Usability: Use tools like Google's Mobile-Friendly Test to validate mobile usability.
Momchil Chonov

Lead Author's Summary and Final Rating

Momchil ChonovGambling Expert & Content Team Lead
Very High Overal Expert Score 7.5/10 or 75 %

From my perspective, 21 Casino is a solid, secure choice for UK players who want variety, reliability, and clear player protection. The catalogue of slots and table games, backed by top industry names, really sets it apart, and the site structure is thoughtfully designed to make terms and privacy information accessible. Mobile and web performance is strong, supporting players who prefer gaming on the go. I also appreciate the flexibility in betting limits, making the platform suitable for both cautious newcomers and high rollers.

That said, I think it’s important to flag a few gaps. Some terms around account restrictions lack clear definitions, and the level of fund protection could be explained in greater detail. While slot and table game selection is impressive, the live casino offering is not as deep as other leading sites. The absence of provider and feature filters, and a lack of tournaments or community features, means advanced or social players might miss out. Furthermore, the social media presence is almost non-existent, and there are a few technical areas (like image formats and caching) that could be improved further.

Welcome Bonus

21 Casino in the App Store
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Max Bonus Amount £500
Bonus Code No
Significant Terms Full T&Cs Apply. 18+. New players only. Min deposit £10. Bonus funds are 121% up to £300 and separate to Cash funds. 35x bonus wagering requirements apply. Only bonus funds count towards wagering requirement. £5 max. bet with bonus. Bonus funds must be used within 30 days, otherwise any unused shall be removed. Terms Apply. GambleAware.org
Wagering 40x
Validity 30 Days
Max Bet with Bonus Funds 5.00
Maximum Cashout The minimum withdrawal from your cash funds is £10.
How to Claim Not Listed
Games Allowed All except excluded ones

Welcome Bonus Comparison

Operator Bonus
£30 Learn More Lowest
£500
£6000 Learn More Highest
Full T&Cs Apply. 18+. New players only. Min deposit £10. Bonus funds are 121% up to £300 and separate to Cash funds. 35x bonus wagering requirements apply. Only bonus funds count towards wagering requirement. £5 max. bet with bonus. Bonus funds must be used within 30 days, otherwise any unused shall be removed. Terms Apply. GambleAware.org

21 Slots

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Slot RTP Software Jackpot Max win Play Review
98.90% Yes x30 Play Slot
98.00% No x1,350,000 Play Slot
98.00% No 1014x Play Slot
98.00% No x7500 Play Slot
98,50% No x670 Play Slot
97.80% Yes x13,000 Play Slot
97.62% No x5000 Play Slot
97.50% No x225,000 Play Slot
97.50% No 60000 coins Play Slot
97.50% No x100.000 Play Slot
97.50% No x400.000 Play Slot
97.43% No x15.000 coins Play Slot
97.35% No x10.000 Play Slot
97.24% No x17420 Play Slot
97.20% No x1.000 Play Slot
97.10% No x160.000 Play Slot
97.10% No x2.000 Play Slot
97.10% No x1.130 Play Slot
97.07% Yes x4000 Play Slot
97.07% No x1980 Play Slot
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Showing 1 to 20 of 494 slots

Software Providers

Software Provider Type (RNG/Live)
RNG Games
RNG and Live Dealer Games
RNG and Live Dealer Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
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RNG Games
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RNG Games
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RNG Games
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RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG and Live Dealer Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG and Live Dealer Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG Games
RNG and Live Dealer Games
RNG Games
RNG Games
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RNG Games
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Payments

Payment Min Deposit Max Deposit Min Withdrawal Max Withdrawal Fees & Notes
£1 £100 Not available Not available Voucher deposit only, no withdrawals
£5–£10 Varies £5–£10 Platform-defined Fee‑free, instant to deposit, 1–2 days withdrawal
£5+ Platform-defined £5+ Platform-defined Similar to card/Apple Pay terms
£5 £5,000+ £5 Varies Typically free; some sites treat as cash advance with fees
£5–£10 Site/platform defined £10–£20 Platform-defined Withdrawal to Skrill 3.49%, bank free (VIP), card up to 3.99%
£1 £1000 Not available Not available Prepaid voucher—deposit only; no withdrawals
£5–£10 Site dependent £10–£20 Platform-defined Free deposits; card ≈2.9%; bank/wire ≈£2.90; crypto 2%
£5 £5,000+ £5 Platform-defined Typically free; some sites treat as cash advance with fees
£10 £250 (voucher max) Not available Not available Prepaid voucher; no withdrawals; free deposits
£10 £100,000+ £10 £100,000+ Typically free; 1–5 days processing

Popularity

Here is a snapshot of 21 Casino’s estimated traffic according to Ahrefs.com and Semrush.

Ahrefs Organic Traffic 3026
Ahrefs Paid Traffic No data
Semrush Organic Traffic 7886
Semrush Paid Traffic No data
21 Casino Site Ahrefs Traffic 21 Casino Site Semrush Traffic

Responsible Gambling

As a UKGC-licensed platform, 21 Casino is committed to the highest standards of responsible gambling and player protection.

Self-Exclusion Yes
Deposit Limit Settings Yes
Spending Limit Settings Yes
Time-Out and Gaming Time Reminders Yes
Self-Assessment tools Yes

21 Casino Company

Company Name White Hat Gaming Limited
Founded 2012
Founder Max Wright
Headquarters 85 St John Street, Valletta, VLT1165, Malta
Phone +353 12630144
E-Mail Contact Form
CEO Phil Gelvan
CFO Justin Psaila
Other key personnel Steve Sowrby -CTO, Ed Bullock -CLCO, Mary Rayan -CPO
Subsidiaries White Hat Gaming Inc., Cardell Limited N.V.
Owned Brands Skol Casino 🞄 Playzee 🞄 SpinYoo 🞄 Barstool Sportsbook & Casino 🞄 Casilando 🞄 Miami Dice 🞄 Barz Casino 🞄 Blackjack City 🞄 Captain Spins 🞄 CasiGp 🞄 Casilando 🞄 Casimba 🞄 Diamond7 🞄 Dream Vegas 🞄 Hello Casino 🞄 Jonny Jackpot 🞄 Miami Dice 🞄 and more
Parent Organization White Hat Gaming Limited
Employees Over 500
Markets CA, FI, IN, IE, NZ, NO, GB, AQ, AR, AM, BD, IO, CV, CL, KM, CY, DM, DO, EG, SV, FO, FJ, GM, GE, GL, GD, IM, JP, KZ
Shares No
Stock Exchange Not Listed
Stock Price No
Number of POS Not Listed
Number of Clients Not Listed
Revenue $7 Million

Conclusion

Momchil Chonov - Gambling Expert & Content Lead Email

21 Casino is a well-licensed, user-oriented site with a large game catalogue, strong security, and easy navigation. Overall, the operator succeeds on the core essentials and offers a high-quality site for a broad range of UK players. With a push on communication, live casino depth, and some tech enhancements, I believe it could quickly climb higher up the rankings. 

Momchil Chonov
Gambling Expert & Content Lead
7.3/10 Register Here

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