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Welcome To Casino Sites Online

Updated: 25 August 2021

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Are you searching for the best online casinos in the UK that are safe, fair and provide great bonuses? Search no more! has reviewed the casino experience at hundreds of UK websites to create a list of the very best in 2021. 

All sites listed on our website are fully licensed by the UK Gambling Commission and are player first and player-friendly. Find out where is the best place to make your bets and who is offering the biggest bonuses. 

Casino Sites Online are here to help you with the latest deals. Find free spins and no deposit casino bonus offers plus honest casino reviews.

We let you know where you can play the newest and most popular online slot games. We supply answers to all questions when it comes to online casino gaming in the UK.



The Best Online Casino Sites in the UK Reviewed

Launched in 2020, Casino Sites Online provides all you need to know about online gambling casinos in the United Kingdom.

Online casino sites offer you the opportunity to win real money online. There are various internet casinos to choose from and they all offer something different. 

We are passionate here about the casino experience for UK players. We present to the UK casino players the best casino sites that are available to UK residents. You can play with confidence knowing that you are with the best.

The best online casinos are recommended by the Casino Sites Online team and they have all been tried and tested. Tap into our fifteen years of UK online slots, blackjack and roulette gaming experience.

Be sure to check out this list of the top-rated: best casino sites.


New Online Casino Sites 2021

The world of online gambling has grown rapidly in the UK over the last twenty years. With new casino sites opening every day it can be hard to know which offer the best deals.

The games and features of new casino sites vary. It is important to find one that has exactly what you need.

At Casino Sites Online we maintain a list of the newest casino sites like Skol Casino and Slotnite and review what new players can expect.

Everything you need to know about the top new online UK casino sites is here: new casino sites.


Mobile Casino Sites

Most online casino sites can be downloaded onto your mobile phone as an app. You can also play on your mobile device internet browser. Mobile casino gaming is possible to play wherever you have a connection to the internet. 

Most casino games that are available to play on desktop computers are also available to play on mobile and tablet. This includes online slots, live dealers casino games, roulette and blackjack.

Mobile casino sites offer games that can be played in demo play. This allows you to ‘try before you buy’. Find the one you like and understand before playing for the first time with your own real money. Mobile online casinos continue to improve with faster internet and mobile data speeds. 

Reviews here on guide on what to expect from the mobile site you choose to gamble on. Our team of regular players use Apple and Android devices for their testing with different mobile and tablet screen sizes.

Mobile Starburst Slot Casino Game
Mobile Starburst Slot Casino Game


Online Casino Bonus | Site Welcome and Reload Offers

Ready to play for real money at the online casinos? Make sure you take the opportunity to claim the value on offer from the casino bonus. 

This is the advantage of playing casino games online rather than in the retail casino, arcade or high street bookmaker.

Online casinos offer casino bonuses to UK customers. These can be welcome offers when you sign up, add your debit card to your account or make your first deposit. Reload casino bonus offers are given when you make more deposits or just play at the casino site online.

Most UK online gambling casinos provide a variety of different welcome bonuses as an incentive to sign up for their services. This type of bonus is received once a player creates an account with the online casino site then makes a deposit. The most common offer is usually the player having their first deposit amount matched by the casino site. Welcome Offer £100 First Deposit Match Plus 200 Free Spins Welcome Bonus Offer.

Welcome bonus varies per site. Offers range from no deposit casino bonus or free spins to a 100% matched deposit or even 200% match. The bonus amount for a deposit match can be as high as £1000.

The casino bonuses have terms, conditions and restrictions. Matched welcome bonuses normally require the player to perform a certain number of bets, known as a wagering requirement.

A typical wagering requirement is thirty-five times the amount of the bonus. Bets may be restricted to specific games and the bonus may have a cap on the maximum win and withdrawal amount. 

Other restrictions in the terms and conditions of the offer are the expiration. Offers usually must be completed within 30 days of first being claimed.

The best way to understand the welcome bonus at an online casino is to read the terms and conditions. Find the casino bonus offer that best suits your play style.

The best casino sites offer a good variety of promotions and bonuses, the most important being a welcome bonus. Registering for a new casino is a great opportunity to take advantage of these welcome casino bonuses. 

On Casino Sites Online there is a big variety of bonuses available, from free spins to cashback. We provide players with the best options so they can pick the right casino and offer for their needs. 

We research, find and share the best online bonuses from new and existing UK online casino sites. We are constantly looking for new and updated bonuses. We love online casinos that allow players to test games or give them a safety net to try their casino. See the Best Casino Sites page for an easy view of the best online UK casino welcome bonuses.

It is important for players to look at the withdrawal requirement associated with welcome bonuses. A lot of the generous welcome bonuses will require players to win a certain amount before they can withdraw. 

Some sites require you to play through an amount of money before being able to withdraw. This can be anything from 1 to 50 times the amount of the casino bonus. Bonuses can also be limited by time or date and even attached to a certain casino game. Be sure to read the terms and conditions of different online casinos before claiming.

For a full guide on online casino bonuses see our articles:

What Are Online Casino Bonuses?

What is a Reload Bonus?


Online Casino Site Withdrawals 

If you have been lucky and enjoyed a big win then it is time to withdraw back to your payment method!

British casinos differ online in how quickly each of the sites transfers requested funds back to the customer. The difference between sites can be multiple days.

This is often overlooked before joining your next internet casino site, so don’t get caught out. Check out our reviews and know in advance how quickly each site pays out.

BGO Withdrawal Page Mobile
BGO Mobile Withdrawal Page.

All online casinos have set restrictions on withdrawals that players are able to make. The restrictions can come in the form of an ‘Amount Limit’, ‘Time Limit’ or possibly a combination of the two! 


Amount Limit 

An Amount Limit is any amount of money that the casino allows to be withdrawn in a single transaction.

For example, a casino can limit you to making a withdrawal of £5,000 in one go.

Established casino sites have the same minimum withdrawal amounts that they have for deposits, plus high maximum daily payout limits. 

This is an area where casinos are very different. Many unfortunately use higher minimums, introduce payment caps and pending periods for withdrawals.

Knowing the payout policy of the casino is a very important aspect in deciding which site suits your needs best. For example, Coral Online Casino has a minimum deposit of £5 and no maximum withdrawal amount. It is also important to remember however that bank or card issuers may have limits in place.


Time Limit

A Time Limit is when an online casino limits the number of withdrawals a player can make within a specified time.

You might only be allowed to make one withdrawal per day or twenty in a month for example.


Time and Amount Limit

Most online casinos set up a limit that combines both time and amount. For example, you may only be allowed to make a cash withdrawal of £5,000 per week.

For most players, these limits are not usually an issue. Casual online gamers make relatively small deposit amounts, small bet sizes and withdraw relatively small amounts.

However, when it comes to high roller players these limits can create issues and can often become quite complicated. 

High roller players make larger deposits, bet bigger amounts and also want to make bigger withdrawals from their accounts. When this happens online casino providers make special exceptions for these players. These withdrawals can be negotiated on a case by case basis with the online casino customer support teams. 

Withdrawing funds from your online account is the best part of online casinos. Lucky and skilful players can often withdraw more than they are depositing. In recent years, like depositing, withdrawing has become seamless. 

During the sign-up process, the online casino will let players know what payment methods are accepted. Whichever method is used to deposit must also be used for withdrawals. It should be noted that not all payment methods offer a withdrawal option. The player will therefore have to provide an alternate method for withdrawals.


Does it cost to withdraw?

Popular online casino sites in the UK only charge to withdraw if players are using an alternative method such as PayPal.

It is normal for withdrawals to a debit or credit card to have no cost associated with them.

This information should be pointed out to players during the sign-up process. Consult that casino’s online help centre, FAQs or live chat service before joining.


How long will it take for the money to show up in my account?

Unfortunately, there are no set standards across online casinos in the UK when it comes to withdrawing your winnings. Withdrawal times depend on payment methods and time of year for example.

For players using payment methods like debit cards, it will usually be back in your account within two days. Sometimes this can take up to five days.


Is there a maximum or minimum withdrawal limit?

This is something that does exist at the majority of online UK casinos but varies greatly. Players may find that they are limited to a daily, weekly or monthly withdrawal amount. Players should again consult the specific casino’s guidance for detailed information.


Payment Methods at UK Casino Sites

The majority of casino sites we feature will accept a good variety of methods including Visa and Mastercard. Some will accept PayPal, some will let you pay by phone, and some will accept alternative payment methods.

It is also important to understand and look out for fees associated with withdrawing – read the withdrawing section above.

Deposit Method Options at PlayOJO Mobile
Deposit Options at PlayOJO.

There are a number of things players should check before they can comfortably start playing at the best online UK casinos.

If players live outside the UK they are still able to use certain online casinos featured at Casino Sites Online. Sites are available in various currency and language options. Some casinos are restricted from operating in certain countries and can not accept players from there. 

The accepted payment methods change from casino to casino. Players will see the accepted methods in our reviews. It is important to make sure that whichever online casino you choose accepts your preferred payment method for withdrawals and deposits. 

Online Casinos accept a variety of payment methods. We have listed some of the most common payment methods that online UK casinos use below.



All licensed UK online casinos accept deposits made by Visa debit card and usually without a transaction fee. The only consideration for Visa users at online casinos is to update your saved card details. Do this when you receive a replacement card from your bank (if you have suffered a theft, loss or card expiry).


Mastercard and other Credit Cards

The UK Gambling Commission announced a ban on casino sites allowing customers in Great Britain to use credit cards to gamble. From April 2020 credit card payments are no longer accepted by UK casinos. This was introduced as a measure to protect vulnerable people from experiencing gambling-related harm.


Maestro Casino Review

Maestro is actually owned by Mastercard. It is a debit card network and you can therefore use this to fund your casino account quickly and easily. This can either take the form of a debit card or a prepaid card.


Online Casino E-Wallets

Less known to casino customers is the e-wallet deposit method. There is an increasing range of e-wallet solutions available at online casinos. Examples are Skrill and Neteller.



PayPal is a great way of making casino deposits and withdrawals. Payments in and out are often instant so money is transferred to your account quicker than the debit card method. The only requirement is that you must make sure your PayPal is actually linked to any major bank debit card.

Read more about using PayPal at UK online casino sites here: UK Casino Sites with PayPal



Many customers use Paysafecards because it is a secure casino deposit method. It allows online casino site players to deposit funds to a prepaid card, like a gift card. Bank accounts and credit cards are not needed, just find a local sales outlet and buy the Paysafecard there. You can then use that Paysafecard to pay online into your casino account.


Customer Service at Online Casinos

Online casinos have dedicated Customer Service teams for resolving customer queries and complaints. 

They offer a variety of means to communicate with them. Contact methods provided by casino sites online include live chat, an email address and a dedicated telephone number.

Customer Service can also be contacted by Facebook messenger, WhatsApp, and Social Media at the best online casinos UK.

Times of customer support availability vary across sites. For example, provide a 24/7 service. BGO casino is only contactable between 10:00 am and 10:00 pm. Customer Support Customer Support.

As these UK online casinos are dealing with real money it is important to know that they offer good customer service. The majority of these sites say that they have good customer service as they know it is valued by players. Because of this, we are very critical and precise when researching and reviewing this important component of online UK casinos. 

It can be particularly stressful for players when they feel they have lost their money unfairly. This is why it is imperative for the best casinos to offer a range of customer support avenues that operate efficiently. 

Live chat is usually able to provide the quickest and most reliable customer service to players experiencing problems. It also provides players with confidence during problem-free playing sessions. However, new casinos also need to provide excellent customer service when actually dealing with customers.

All UK online casinos reviewed at Casino Sites Online include our experience of contact with the customer service teams.


Joining Process at UK Casino Sites

Congratulations, you have sifted through our reviews and selected the UK online casino that is perfect for you! Now the next step is to sign-up and take advantage of that generous welcome casino bonus. Before starting the sign-up process be sure to have your selected payment method ready.

  1. Go to your chosen casino and select ‘Join’ or ‘Register’.
  2. Most casinos will now ask players for personal information such as an address, email, date of birth, phone number and name. They may even ask for identification such as a passport or driving license scan.
  3. The next section of the registration process will require you to enter the information for your chosen payment method. Be sure to have checked that your currency is accepted.
  4. Once this is completed you may have to verify your email.

Joining most online casinos is a simple process. Use the Join Now or Register button on the homepage to begin the registration process. The next step requires you to provide information about yourself including your name, email address and mobile phone number. 

Mansion Casino Registration Form Mobile
Mansion Casino Registration Form.

Some online casino players prefer to keep casino offers separate from personal or work emails. One way to manage that is by creating a new email address and using it just for online casino gambling accounts.

When joining you will need to provide personal details such as your name, date of birth and address. This is for the casino site to be able to complete an electronic identity check. The check will verify that you are a UK resident and over eighteen years of age.

Some sites may ask you for identity documentation. This is to prove that the information you have provided is correct. Acceptable documentation would be a photo of your passport or driving license. 

You may also be asked to enter your mobile number and have it confirmed to be able to join the site. For most sites, you will simply be asked to provide verification via your email address. 

The final step of the registration process at online casinos is to select a username and password.  The site will prompt you to select a secure password to protect your account. Use at least 8 digits, avoid easy to search or guess phrases such as your name. A random 8 digit combination is often the best approach to guarantee a secure password. 

Finally, choose a name you are comfortable with as it will most likely be unchangeable and on some sites may be publicly visible. 


Depositing Money at English Casino Sites

Now that you have completed the registration process the next thing to do is fund your account. Depositing money into your online account is easy and you can start playing with the real money casino games.

Go to the deposit page that should have been suggested once you finished registering. It should also be located in your ‘My Account’.

Select your payment method and how much you want to deposit.

At this point, you should be aware of any fees associated with depositing or withdrawing using that payment method. Check the terms and conditions of the welcome bonuses as you may have to deposit over a certain amount to qualify.

After clicking submit the casino will accept your payment method. You should see your balance at the top of the screen in your casino account.


Regulation, Security and Safer Gambling

The UK Gambling Commission licenses and regulates the people and businesses that provide gambling in Great Britain.

The UKGC was set up under the Gambling Act 2005. It regulates commercial gambling in Great Britain in partnership with licensing authorities.

The requirements of licensed online gambling sites are the Licence Conditions and Codes of Practice. Licensed casino sites are assessed to ensure they are following the requirements.

This ensures that all online gambling businesses comply with the industry regulations and standards as highlighted in their licensing agreements. The UKGC protects players from unfair gambling services and ensures a safe and secure environment both online and at physical casinos. 

All regulated online casinos in the UK have secure protection methods for player wallets and funds in their websites and apps. Their games are checked by organisations like eCOGRA. They ensure that online casino games are fair for all players and payout at the advertised rate.

Regulation, Security and Safer Gambling is a very important concern for players when choosing an online casino. Everyone wants to feel safe and know that their money is protected. The best new online casinos in the UK are regulated and use the latest online security features. This makes sure that there is a safe and enjoyable environment for all.

Regulated UK casinos are amongst the most secure in the world. The Gambling Commission regulates all commercial gambling in Great Britain in partnership with licensing authorities. 

This means that the UKGC regulates all of the best new online casinos in the UK. They do this in addition to UK physical casinos, all sports betting, arcades, bingo, the National Lottery and more.

Moreover, all online casino sites operating in the UK must obtain a gambling license from the UK Gambling Commission. This is the only way they can legally provide classic casino games such as slots and card games to UK players. 

It is important to note that there are online casino sites out there operating illegally outside the regulation of the UKGC. These should be avoided. Online casinos in the UK must display their license number at the bottom of the home page. Players will only find safe, regulated online casinos that hold a UK license on Casino Sites Online.

For a detailed guide on safer gambling go to our blog page: What does Responsible Gambling mean?


Online Casino Site Games

Online Slots

Slots are a UK favourite for playing online. With a simple format and features, these colourful casino games offer a fun and entertaining gaming experience. They are found in the online casinos under their own category ‘Slots’. 

The number of online slot machines has increased in recent years. From the original three-reel slots to modern games with special features and multiple winning opportunities. 

Playing online slots is as simple as clicking the spin button then letting the game do the rest. All wins are down to chance. 

Learn how to play slots at our guide: How To Win At Online Slots


Online Roulette

Like original slots, online roulette is a familiar favourite for online casino players. To play, just guess where the ball will land and win big! Simple yet fun and enjoyable. The game is available to play at all online casinos. Roulette retains its original charm in the online version, however, you like to play it.


Online Blackjack

Players agree that chasing 21 is just as exciting at an online casino. Compete with the dealer at blackjack in one of the greatest casino table games of all time.

Check out our guides for playing blackjack here:

How To Play Blackjack – Beginners Guide

Online Casino Blackjack Strategy & Betting Systems


Starburst Slot by NetEnt

The incredible Starburst slot by NetEnt has 3 rows and 5 reels. It features bright colours, high-quality gameplay and big win potential. Players that are looking for high intensity will love Starburst. 

It has Expanding Wilds, Re-Spins and the ability to win both ways. Players are able to claim Starburst free spins with no deposit required at numerous casino sites. It is no surprise that the 10 pay line Starburst slot has maintained its position amongst the top UK slots.

Starburst Slot Game On Mobile
Starburst Slot Game On Mobile.


Rainbow Riches Slot by Scientific Games

Rainbow Riches is one of the most popular UK slot machine games of all time. Most players see it as the pinnacle of what other slot games aspire to be. A longstanding masterpiece by Scientific Games there is big jackpots waiting for players on its 5 reels. 

The bright and colourful slot features a massive rainbow with leprechauns and four-leaf clovers. Look out for the symbols, letters and numbers in a variety of colours hidden on the reels.

Rainbow Riches Online Slot
Rainbow Riches Online Slot


Book of Dead Slot by Play’n GO

Players can enjoy travelling back to ancient Egypt in the cryptic slot game by Play’n GO, Book of Dead. The online slot has 5 reels and 10 pay lines. We see the Indiana Jones lookalike, Rich Wilde, journey into the mysterious Egyptian temple journey to find the famous text.

Players can enjoy the fantastic high definition animations and silky graphics across mobile and desktop platforms. Land three or more books scattered between the reel positions to achieve the free rounds bonus feature. 

PlayOJO currently offers 50 free spins on the Book of Dead slot when you make your first deposit.

Book of Dead Slot
Book of Dead Slot



What are the best online casino sites? feature the best online casino sites in the UK. Considered are the bonuses, customer service, games and more. This determines which casino sites are the best. 

Which casino site is the best also comes down to personal preference – what games do you want to play? Which welcome bonus appeals to you? 


How to get free spins on a casino site?

Free spins are included in welcome bonuses for new players signing up to casino sites. Casino Sites Online feature the casinos that offer free spins in their welcome bonus and how many spins they offer. We also advise where existing player free spins are available in our blog articles and email newsletters.


How do casino sites send your winnings?

Your winnings will be collected in your account. When you want to withdraw your winnings you should go to your account and select withdraw. Casino sites will send your winnings by bank transfer to the same method you used to deposit. This is unless you specified an alternative method.


How to avoid casino scam sites?

Every casino site listed at Casino Sites Online is fully licensed and regulated by the UK Gambling Commission. Check that an online casino has a gambling license from the UKGC. If they do not it is likely a scam.


How can I win online slots?

There are hundreds of different online slot games, each with a slightly different win condition. Players should fully understand how to win each slot game before playing. Winning the majority of slot games involves lining up the same number or symbol across the spinning reels.


Which online casino has the best payouts?

The payout rate of each game is shown at regulated online casinos in the UK. Go to the game information or help file and search for the RTP. This is the return to player percentage. The higher the percentage, the bigger the payout rate of the casino game.


Is online gambling legal in the UK?

Yes, online gambling is legal in the UK. It is regulated by the UK Gambling Commission. All online casino sites operating in the UK must obtain a gambling license from the UK Gambling Commission. This is the only way they can legally provide classic casino games such as slots and card games to UK players.


Is gambling tax-free in the UK?

Yes, gambling is tax-free in the UK. This is not the case in every country but UK gamblers have the joy of keeping all of their winnings.

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