Best UK Online Casino Sites in 2021

Curated list of the top 20 online casinos in the UK. Visit the best UK casinos online where you can play the latest and greatest roulette, slots, and blackjack. We’ve picked out the best online slot providers where you can play safely and win real money.

STRICTLY 18+ Gambling can be addictive. Play responsibly, contact Gamcare for support.

Stay with us to find out more about the best top-rated UK online casinos. Check the UK casino list below and play online casino games safely. Only the top 20 best rated UK casino sites and Gambling Commission Licenced casinos are listed! Keep an eye out for our *exclusive* bonuses only available here.

Compare the Top 20 Online Casinos UK – Best UK Casino Sites Listed

#1. Casino Planet

#2. Regent Casino

#3. Casino Lab

#4. Casushi Casino

#5. Race Casino

#6. Betfred Casino

#7. Playluck Casino

#8. Spin Rio Casino

#9. Slotnite Casino

#10. Pots of Luck Casino

#11. Queenplay Casino

#12. Mr.play Casino

#13. Mansion Casino

#14. Mega Casino

#15. Plaza Royal Casino

#16. All British Casino

#17. William Hill Casino

#18. Captain Spins Casino

#19. Hyper Casino

#20. The Sun Vegas

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Online-Casinos.co.uk – Your UK Online Casino Guide Since 1999

Online-Casinos.co.uk is the most established online casino guide in the UK, having helped players in carefully choosing the best UK online casinos since 1999. As well as using meta-review metrics to determine the best UK online casinos, our experienced team of reviewers understand exactly what makes online casinos great and how to choose a UK casino site that is right for you. We know that big casino bonuses and flashy graphics are only part of what makes a great UK casino site – you can be sure that the online casinos we recommend have something extra special.

At online-casinos.co.uk, we offer more than just a casino comparison site. Our in-depth articles and guides to every aspect of online gambling will arm you with the expertise you need to make your online casino experience more fun.

How We Rate the Top 20 Best Online Casinos in the UK

We visit every corner of the internet to gather information about the best online casinos in the UK.

To rank the current top 20 online casinos in the UK, we take an aggregate of online casino review scores from the best UK casino review sites and player forums. Then, we factor in the quality of their promotions, games and the number of casino industry awards they have won.

The final top 20 list consists of the best & highest rated UK online casino sites.

Top Online UK Casinos for Your Favorite Games

With the explosion in online casinos over the last few years, it is no wonder that there are now so many stellar games to choose from. For the first time ever, everything from slots to video poker is available at the push of a button. Interestingly enough, it’s not just the new releases that are dominating the UK online casinos sphere, but also the original games that set the standard way back when.

If you’re looking for the best UK online casino for your favorite game, we’ve made a special list for you. This list features the top best UK online casinos for each particular game. We frequently curate and update this list to provide you with the best online casinos in the UK for the most popular casino games.

Top UK Online Casino Sites 2021 List

1. All British Casino – top UK cashback casino (10%)
2. Plaza Royal – top new UK casino (launched in November 2020)
3. Spin Rider – best UK mobile casino (800+ games)
4. No Bonus Casino – top UK roulette casino (10+ versions)
5. Play Zee – best UK slots casino (Over 2000 slots)
6. Mr Play – top UK Jackpot casino (58 jackpot games)
7. Betfred – best UK blackjack casino (£10m blackjack game)
8. Play Zee – top UK promotions casino (daily promos)
9. 21 Casino – top-rated UK software casino (114 providers)

Below you can visit the most popular UK online casinos by the game you want to play:

How to Play at the Top UK Online Casinos

If you’re interested in playing at any of the UK online casinos, here’s what you need to know to get started.

The first step after choosing the best online casino for you is to register. To complete this step, you will have to provide some personal information, including:

• Full name
• ID, passport, or driving license 
• Email/contact information
• Billing address
• Payment details such as your debit card information
• Transaction history (possible)

After registration, the casino will likely do a background check on you before verifying your account. This may take up to a couple of days, but once verified you are free to start indulging in everything the casino has to offer!

If you are a beginner, we recommend you start out on a demo account if possible, so that you can learn the ropes first. When the time comes to start using real cash, though, the top UK online casinos offer several payment options such as credit card, debit card, or PayPal.

Making an Online Casino Deposit

So, you’ve found an online casino you like, you’ve tested out the games on a demo account, and now you’re thinking of making a deposit with your cold hard cash. Go you! However, before you lay a single penny down, there are a number of things for you to be aware of.

Unfortunately, there are far too many dubious online casinos out there for you to be taking any unnecessary risks with your money and your data. The best UK casinos tend to be more reliable when it comes to security as they have trustworthy reputations to uphold, and as such will use better firewall software and encryption. This keeps hackers a bay and ensures that your data is safe and secure when you make a deposit. Having tight security helps online casinos to stand out from their competitors, it is good to check whether the site is licensed and registered.

When it comes to actually make your deposit, the top UK online casinos will offer a number of different ways to make a deposit. Double-check that you are happy with the payment methods they use beforehand. Debit and credit cards are widely used, with PayPal also being a popular choice. Some sites also accept digital wallets and vouchers, though these tend to be less used.

Most casinos will want to see some form of identification before they process any of your payments. This usually entails you sending them a scanned copy of your passport or driving licence. Once done, there will sometimes be a slight delay while your account is being verified, so don’t panic if a deposit doesn’t go through right away, and don’t be afraid to contact customer support if you have any concerns or queries.

If you have any doubts, a quick Google search on the site you are looking at will tell you if other people have had issues that should be a cause for concern.

What to Look For in a Top UK Online Casino

What does it mean to be the best UK online casino? Does it depend on the casino size, how luxurious the design is, how many games it provides, or what kind of bonuses it offers?

There are many aspects to be considered before you can accurately answer this question. That’s why we’ve created meta scores to help you determine which online UK casinos are the best at a single glance.

Here are all the components we have taken into account to help us determine the casinos’ meta scores:

#1. Highest Quality Games

The best online UK casino should provide both a wide range and high-quality games. It should have all the classics from the very best game developers, such as NetEnt or Playtech, and then some!

The game assortments should include:

• Slots
• Video poker
• Live dealer
• Table games

#2. A Well-Designed Site

A clever, elegant design is a must when it comes to running a decent online casino.

The best online casino should:

• Look professional 
• Be easy to use and navigate
• Have all information readily available
• Provide easy-to-access customer service

#3. Safe and Secure

Online security is no joke, especially when it comes to sensitive information such as personal ID documentation and bank details.

This is why the best online casinos will use the best firewall and software encryption to protect their customers.

#4. Payment Options

There should be a variety of payment options available, such as credit card, debit card, or PayPal so that you can choose the most convenient option for you.

The best online casinos in the UK will also have higher deposit and withdrawal limits for their high rollers.

#5. Good Reputation

As a rule of thumb, you should always do a quick Google search to determine if the casino you are considering has a good or bad reputation.

Most importantly, make sure the casino is licensed and regulated by trusted authorities.

Casinos with a good reputation will go to great lengths to maintain their image. Therefore, they will put a lot of effort into providing the safest and most engaging experience for their customers.

What are Online Casinos?

An online casino is essentially the same thing as traditional, land-based casinos. They offer all the same games, including:

• Slots
• Video poker
• Live dealer games
• Table games

And more!

The only major difference between land-based and online casinos is that online casino games can be played virtually. But don’t think for a moment that this means the quality of online casino games is inferior to live games.

In fact, many online casinos in the UK provide live tables and webcam gaming options to satisfy players who enjoy chatting with their dealers or reading the poker faces of their opponents.

With online casinos, you can enjoy your favorite casino games all from the comfort of your home.

The Best UK Online Casino for Bonuses

With so many online casinos in the UK, it’s worth checking out what benefits each one offers and find out which ones make the perfect fit for you, the player.

Keep in mind that you will first need to meet the casino wagering requirements before you can cash out these bonuses. So make sure you read the terms carefully! Usually, you’ll have to wager 25x – 35x bonus, plus the deposit.

The online UK casino with the best bonuses is:

The Best UK Casino for Low Stakes Slots

Low stakes slots are an incredibly popular game in both land-based and online casinos in the UK. This is no surprise as they are incredibly easy to play, involve very little risk, and can provide hours of entertainment!

If you’re looking for a fun time without losing much, our favorite online UK casino for low stakes slots is Dunder Casino.

For more options, check out our full list of the best low stake slots.

The Best UK Casino for Slots

Slots is one of the most popular casino games around. There are thousands of slots out there, with more and more being made daily. They have different visuals and offer multiple paylines and bonuses so it’s understandable if you have difficulty choosing.

But don’t worry, even among so many options, we’ve narrowed the options down to the best online UK casino for slots:

The Best UK Online Casino for Blackjack

Ah Blackjack, the timeless classic. Sometimes referred to as 21, its continued popularity is due largely to the simple yet gripping pace and the potential to win big. Although the game has remained fundamentally the same, many online casinos offer modified versions that are more engaging and offer higher rewards.

By combining skills with a splash of luck, Blackjack typically offers better odds than many of the other games on offer, and there are a number of cunning strategies that players can utilize to maximize their odds of winning. Our blackjack pages are crammed full of strategies and tips to help you get the most out of this classic casino game.

To jump straight into the blackjack action look no further than the number one recommended best blackjack online casino below.

The Highest Rated Online Casino for Roulette

We have tracked down the best online casino in the UK for roulette, which offers the most value and excitement for UK players, featuring a large range of roulette options to cater to every taste.

Take a spin or two on this hugely popular casino game based entirely on luck. There will be no skills, no clever strategies, and no poker faces – just luck. In a bid to replicate the thrill and excitement of land-based casinos, many online platforms now offer live dealers to replicate that casino atmosphere and to assure the players that the computer isn’t rigged against them.

The Top UK Online Casino for Software

A key factor to consider when choosing an online casino in the UK is the software provider it uses.

When it comes to software providers, bigger usually does mean better. We recommend going for sites powered by renowned developers such as Microgaming, NetEnt, Playtech, IGT and Play n Go, to name a few. These well-known software developers have reputations to uphold and will go to great lengths to maintain extremely high standards.

Here is our top pick of the online UK casino with the best software provider:

UK Online Casinos Q&A

Here are the most common questions and answers associated with UK online casino sites.

#1. Are the top 20 UK online casinos you promote really the best?

We evaluate online casinos in the UK based on several key factors, such as:

• Casino size
• Design elements
• Range and quality of games
• Bonuses
• Loyalty programs
• Customer service

And more.

We use all of these parameters to calculate a meta score of each online casino so that our readers can pick the best ones at a glance.

#2. What is the best UK online casino in 2021?

Casino Planet is the best UK online casino in 2021. This casino boasts an incredible cyberpunk design that instantly creates an exciting, adventurous atmosphere, as well as provides weekly bonuses and prizes.

It also has up-to-date licensing and serious auditing, great player safety policies, data protection, account security, and excellent customer service.

#3. What makes a top UK online casino?

The top online casinos in the UK have the best features and the most player benefits, such as weekly bonuses available to their customers. The web design should be elegant and you should be able to join games with virtually no waiting time.

#4. Do online casinos pay real money?

Yes, of course, you can withdraw real money from all the online UK casinos on our list. You can even choose how you wish to receive the amount—by bank transfer, a cheque, money into your debit or credit card account, or into an online wallet. However, note that if you receive any bonuses from the casino, you will need to wager a certain amount before being able to withdraw your winnings.

#5. Instant vs Download Casinos – what should I choose?

Both options offer good experiences these days, but there are some key differences.

Downloadable versions are more popular for mobile, as they provide far easier and quicker access. That’s why casinos promote their apps - downloading them makes you far more likely to stay loyal instead of shopping around.

#6. Do online casinos cheat? How can I know a UK online casino is safe and the games are not rigged?

When it comes to money and personal information, the internet is full of scams. This applies to some shady casinos as well.

When choosing an online casino, always make sure that it is licensed and regulated by a trusted authority and that it has plenty of positive reviews online. A casino with a great reputation will go to great lengths to protect their customers.

#7. How can I avoid online casino scams?

In order to avoid any possible scams, just do a quick Google search and opt for casinos that have as many reviews as possible. Keep in mind that there should be both positive and negative reviews. Be wary of casinos that have only positive raving reviews.

Most importantly, make sure the casino is certified!

#8. What are the best casino games to play online?

The best online casinos in the UK offer a very wide variety of games you can play. All of the casinos featured on our list offer the highest quality games from the best game producers out there. So it really comes down to personal taste.

However, our personal recommendations would be:

• Blackjack
• Poker
• Slots
• Baccarat
• Dice

#9. New vs established casinos – what should I choose?

As a general rule of thumb, it’s always better to go for well-established casinos due to several reasons.

Firstly, it is a matter of safety. Established online UK casinos will not put their reputation on the line by risking any security breaches or having misunderstandings with their customers, therefore you can always rely on them.

On top of this, well-established casinos usually have much more money to invest in the best game producers, thus providing the highest quality games around.

#10. What are the best payment methods to make an online casino deposit?

The number one thing to consider when choosing a payment method is safety and security. All of the casinos listed on our website use safe payment methods. But when it comes to ease and convenience, we recommend PayPal (though it isn’t commonly used by casinos) or Pay by Phone.

#11. Do online casinos have withdrawal problems?

The best UK online casinos will never withhold money from their customers without good reason. However, delays can always happen.

They can be caused by:

• Payment processing, which can take some time.
• Problems with the payment details you have provided to the casino.
• Withdrawal limits, so if you exceed the limit you will have to make multiple withdrawals.
• Minimum wagering requirements when it comes to bonuses (if you have received a bonus, you must wager a certain amount before you can withdraw.)

If you experience any difficulties making a withdrawal, a quick check with their customer service should clear things right up!

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