21 Casino Review
21 Casino was established in 2015 and has since become one of the UK’s top online casinos. The game selection impresses with its variety, including loads of slots, table games, and live games to pick from.
This licensed and regulated online casino also provides a valuable rewards program so everyone can enjoy a steady income of bonuses. To understand how we evaluate casinos, be sure to check out our How We Rate Casinos framework!
- We reviewed 21 Casino licensing, safety and trustworthiness
- We analysed bonus terms and promotions in 21 Casino
- We checked how smooth and reliable payment methods are in 21 Casino
- We analysed 21 Casino’s game selection & usability
- What do you do if you encounter issues while playing at 21 Casino?
- We judge the popularity of the 21 Casino & check user testimonials
21 Casino licensing, safety and trustworthiness
As this casino operates in the UK, it holds a license from the United Kingdom Gambling Commission. Alongside being fully regulated, the site also secures all transactions with advanced SSL encryption to ensure your personal and financial data is safe. Thanks to the games being supplied by reputable providers and subjected to independent testing to support fairness. However, it’s important to remember that no system is entirely without risk.
21 Casino – Complete list of licences
21 Casino is licensed and regulated by the UK Gambling Commission under account number 52894.
Responsible gambling in 21 Casino
This casino site is fully committed to ensuring players remain in control of their gaming. We noticed a good range of responsible gambling tools, such as deposit limits, time-outs and even account closure.
| ⚠️ ADDICTION RISK ⚠️ |
| Although gambling can be an enjoyable pastime, it’s important to be mindful of the risks. Be aware of the risks and warning signs of problematic gambling, such as chasing losses, spending more time or money than you intended, or gambling with borrowed money. If you feel that this is becoming a problem, please don’t hesitate to seek support. In the UK, there are loads of free support available, including GamCare on 0808 8020 133, and NHS gambling addiction services. |
Our trust & safety rating of 21 Casino
Unfortunately, not all UK casinos are built the same, and there are some unscrupulous sites out there. Ready to see how this one fared through our testing?
| What we checked | Score | Why this score? |
| Licences | 5/5 | Clean UKGC license held by the operator since 2018. |
| Brand Credibility & Ownership Trust | 4/5 | Reputable operator with a strong portfolio of popular UK casino brands, but the site is yet to reach the 5-year mark. |
| Security Measures & Data Protection | 5/5 | SSL and TLS v1.2 encryption, GDPR compliant and a separate account for players’ funds. |
| Responsible Gambling Tools | 10/10 | Solid support, plenty of tools, activity reports and trained customer support agents. |
| We can see that this casino puts safety as the main priority! |
| Overall, we found the tools and security here top-notch. We rate this 24/25, giving it a percentage of 96%. |
Bonus terms and promos – Grab a bonus at 21 Casino UK
Let’s admit it – we all enjoy a good casino bonus! Let’s jump into what’s in store at 21 Casino!
| ⚠️ BONUS RISK WARNING ⚠️ |
| The welcome offer includes a 100% bonus match of up to £500 plus 21 bonus spins on Book of Dead. Only bonus funds count towards the wagering contribution. Max bonus bet is £5. Spins valid 10 days, bonus funds 30 days. This means that the offer requires you to wager £500 x 40= £20,000 on casino games before you can withdraw any bonus funds or winnings (game contributions will vary). Based on the average slot RTP of 96%, you can expect to lose around £800 while attempting to clear the bonus. |
21 Casino UK new player bonus
New players can claim a casino welcome bonus of up to £500 + 21 free spins just for joining. To claim, simply follow our link, create your account and make a minimum deposit of £10.
The bonus has a wagering requirement of 40x. You can view bonus details by clicking the Promotional Terms and Conditions link at the bottom of the 21 Casino website.
21 Casino’s free spins offer
At the time of the review, there weren’t any free spins promos available. The deals consist of just a welcome offer.
21 Casino’s most popular offer
This would have to be the new player bonus, as the site was pretty blank when it came to anything else.
21 Casino promotions and tournaments
The downside to 21 Casino’s promotions page is that the bonus cupboard looks rather empty here. Apart from the welcome offer, curious players won’t know there’s any other offer available at the casino site unless they register. Though, as always, be sure to check out the promotions tab for the full rundown of live tournaments this casino has to offer every now and then – this changes often!
Our rating of 21 Casino’s bonus terms & promotions
So then, how do the bonus bits and promos stack up on our scorecard? Here’s our detailed breakdown.
| What we checked | Score | Why this score? |
| Bonus Terms and Conditions | 4/5 | Clear and easy to locate and generally follow industry standards. But the high wagering makes the deals unfair. |
| Wagering Requirements | 1/5 | 40x the deposit and 40x the bonus amount? 80x is just way too high for us. |
| Ongoing Promotions | 0/5 | 21 Casino has nothing else to offer players after the welcome deal. |
| We’d love to see more offers and lower wagering requirements at 21 Casino |
| With such a dry selection of promos, there was little for us to evaluate. At least there are no caps on max win and bonus conversion amounts, and once you sign up, you may get emailed better offers. So with that in mind, we rate this 5/15, giving it an overall percentage of 33.33%. |
Payment methods & account fairness in 21 Casino
You need to check out the casino’s payment methods if you are going to play casino games using real money. Check the table below to learn which payment options are available at this online casino.
Apple Pay
astropay
Bank Transfer
Maestro
Mastercard Debit
Neosurf
Neteller
PayPal
PaySafeCard
Skrill
Trustly
Visa Debit
| ⚠️ FINANCIAL RISK WARNING ⚠️ |
| Remember, gambling involves real money, and you risk losing what you bet. The casino always has an advantage, which means that most players will lose money over time. It’s vital to keep in mind that gambling should never be seen as a way of making money. To keep it fun and safe, always only gamble with money you can comfortably afford to lose and set yourself strict limits. |
Step by step guide on how to withdraw from 21 Casino
Submitting withdrawal requests is a straightforward process that you can easily access. Simply open your account page, and you’ll quickly find the Withdraw option. Here are the steps to take when you want to withdraw your funds.
- Click the person icon at the top of the page to open your account page.
- Select the Withdraw option under the Withdrawals menu.
- Pick your withdrawal method and enter an amount of £10 or more.
Other important information to know when withdrawing
The minimum withdrawal amount is £10, and all requests are held for at least 24 hours by the site before processing. Remember that you must first meet the 35x wagering requirement for bonus funds before withdrawing them.
Documents and information you need to share with 21 Casino to open an account
The Sign-Up button is visible on the homepage in the top right corner. Creating an account is also a breeze since the registration form can be completed in just under 2 minutes. Once you create your account and you’ve passed the standard name and address info, then you’ll be asked to upload some documents. This step will require you to provide a form of ID and proof of address. Here are the verification documents you can forward:
- ID – government-issued photo ID that states your place of birth.
- Proof of address – utility bill, letter, or statement issued within the last 3 months that shows your name, address, issue date, and company name or logo.
For added security, the site will email you an activation link once you finish the process.
Our rating of 21 Casinos’ payments & account fairness
Smooth and secure casino transactions with minimum hassle are what we all want. Check out what we found when we lifted the lid on the payment processes at 21 Casino.
| What we checked | Score | Why this score? |
| Minimum Withdrawal and Deposit | 3/5 | £10 is a fair amount. |
| Accepted Payment Methods | 3/5 | A decent mix of standard UK options, but we’d love to see Google and Apple Pay in the mix. |
| Account Rules and Player Rights | 1/5 | KYC is required before withdrawing, and the process times are 24 hours, which is in line with UKGC regs. |
| Withdrawal Speed and Processing Times | 3/5 | KYC is required before withdrawing and the process times are 24 hours, which is in line with UKGC regs. |
| Fast payouts, though a hidden sting, watch out for inactivity fees |
| The payment mix could be improved by adding options such as Google and Apple Pay. Additionally, the inactivity fees after 30 days are surprising and should be made more prominent. For payments and account fairness, we rate 21 Casino 10/20, so overall, a mid 50%. |
21 Casino’s games library & usability
This is where the platform shines, and with 5,000+ games – you’ll be entertained at all times.
Blackjack
Baccarat
Roulette
Live Casino
Craps
Slots
Poker
Game Shows
NetEnt 
Playtech 
Microgaming 
Play’n GO 
NextGen 
Quickspin 
BetSoft 
Thunderkick 
Fantasma 
Big Time Gaming 
Genesis 
Nolimit City 
Greentube 
Pragmatic Play 
Relax 
Merkur Gaming 
Blueprint Gaming 
Skywind Group 
Inspired 
Iron Dog Studio 
Stakelogic 
Reel Kingdom 
NetGame 
Nyx Interactive Exclusive games and branded tables
You won’t find any exclusives here, though you will find over 5000 titles from world-leading game providers.
Recommended slots you can play at 21 Casino
Players can find many famous slots like Book of Dead and Big Bass Bonanza alongside various Megaways titles.
Top 4 slots to play at 21 Casino
Exquisite live dealer table available in 21 Casino
Live casino games come in various versions of Blackjack, Roulette, Poker, Sic Bo, and Craps, all in a dedicated area.
Game Shows you can play in 21 Casino
There are many iconic live game shows such as Deal or No Deal Live, Crazy Time, and Monopoly Live.
Popular game providers at 21 Casino
21 Casino features a well-known selection of software providers. Slots are provided by various studios, including famous companies like NetEnt and Play’n GO.
When it comes to Live casino games, the leading live game supplier, Evolution, is behind a number of the Live casino games on the site. You can also play titles from Pragmatic Play.
Mobile experience at 21 Casino
Players who prefer to use their smartphones for their slice of mobile casino action can rest easy – 21 Casino runs perfectly on mobile devices, although there is no dedicated Casino app. Instead, it runs through a browser-based, HTML5 mobile site. This version is fully optimised for smartphones and tablets.
Our rating of 21 Casino’s games library & usability
Right then, let’s dive into the heart of the casino, the games library! We’ve checked how easy the site is to navigate, plus whether you can spin and win on the go.
| What we checked | Score | Why this score? |
| Games Library and Navigation | 10/10 | Useful filters and niche genres, including bingo, Slingo, crash and plinko. |
| Software Providers and Game Integrity | 5/5 | 80+ developers with all the popular names. Uses eCOGRA fair game testing too. |
| Site Navigation & Design | 2.5/2.5 | Smooth flow, attractive traditional theme and uncluttered layout. |
| Mobile Experience | 2/2.5 | No app, but great optimisation for mobile. |
| The vast selection of game types is one of the site’s best features |
| Whether you prefer Megaways slots or high-quality live games, 21 Casino’s game selection caters to many different preferences. So, with these thoughts in mind, we rate the games and usability 19.5/20 – a grand 97.5%! |
21 Casino’s customer support
The customer support team is friendly and quick to respond via live chat, which is available 24/7. You can also get in touch via email, although the site has no phone number.
Languages supported: English.
Help Centre: Easy to reach and offers a plethora of in-depth FAQs covering several topics.
Other resources they offer: You’ll find a handful of articles and guides for things like bonuses and news. 21 Casino also has coverage on Facebook, X and Instagram.
Our rating of 21 Casino’s customer support
We all know that good support is crucial, but it can sometimes be an overlooked aspect of online gambling. How did 21 Casino do in our testing?
| What we checked | Score | Why this score? |
| Opening an account | 1.5/2 | Easy and quick with standard KYC checks that take up to 24 hours. |
| Availability & response time | 2/2 | We got instant replies on live chat, and email responses were within the hour. |
| Contact options | 2/2 | 24/7 live chat and email service. |
| Clear contact options | 2/2 | The contact options are visible on every page, making it easy to contact support. |
| Help centre & self-service options | 2/2 | The casino has implemented a recent help portal with comprehensive FAQ’s. |
| 21 Casino offers a superb setup for new and regular players looking for help. |
| We weren’t disappointed with anything here, and the agents were friendly and quick to respond. All in all, we rate this 9.5/10, giving 21 Casino customer support an overall percentage of 95%. |
Popularity & user testimonials
This site enjoys some popularity with UK players, though reviews do point out slow withdrawal and KYC processes. We found a few niggles regarding the lack of bonuses, but the platform is up front about this, at least. Overall, 21 Casino has a seal of approval within the industry for its fairness and security measures; we rated it 8/10 here.
| Overall, 21 Casino does a good job for UK players, but the lack of bonuses may put some of you off. |
| This casino has implemented strong safety measures, which make it a reassuring choice for many players. The game collection is outstanding, and customer support performed well under our testing. But like every other platform, there are flaws to consider. That said, 21 Casino scores 8/10, giving them 80%. |
Top games, trusted names, and a bit of a quiet promo corner
21 Casino offers a vast selection of games from many trusted suppliers. No matter your preferences, there’s a game type here for everyone. While promotions are absent from the site, players can still expect to receive them directly in their emails.
All in all, 21 Casino is a convenient and safe casino site that aims to please different UK players with various game tastes.
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Frequently asked questions
Nicola is a seasoned iGaming content writer with nearly 9 years in the online gambling industry. Starting at LeoVegas in 2016, she moved from Customer Support to Senior Quality Assurance before honing her craft as a Copywriter. Since 2020, Nicola has built a reputation as a trusted expert writer, producing honest, engaging casino reviews and content for top brands like Betsson, Mr Green, Ladbrokes, AskGamblers and more. She specialises in slots, bonuses, live casino games and responsible gambling topics, always putting players first.