Finding the best casino sites is a great way to increase your chances of having fun when playing your favourite games online.
But it takes a lot of time to locate the UK’s finest casino websites. Why? Because there are so many to choose from.
That’s why we’ve reviewed all the leading casinos and come up with a list of the best ones. And we’ve highlighted which ones offer the most for the games that you care about.
All you need to do is read our reviews and decide which ones offer the things that you want from a top casino.
9 best casino sites for 2021
Listed below are the best casino sites to play right now.
These sites have been selected based on the quality of their games, bonuses, payouts, websites, apps, and all the other things that you care about:
PlayOJO Casino
Mr Green Casino
LeoVegas Casino
Grosvenor Casinos
Bet365 Casino
Mansion Casino
888 Casino
The Sun Vegas Casino
Casimba Casino
All British Casino
How we review the leading casino sites
Credit: Pixabay
Reviewing UK online casino sites is something we take great care and pride in.
Just like you, we’re players who love testing ourselves on the best casino games and we expect the very best from the websites that we choose to invest our time and money in.
There are some key things that we look for when we’re reviewing casinos for you:
Games
Games are the single most important part of any great gambling site. We look at the quality and quantity of the titles on offer, along with the software providers they’re made by to ensure you get the best games at your favourite sites.
Security
Security is a top priority for us when we review a casino. We need to know you’ll be safe when you place your bets and that’s why we make sure the site is recognised by the UK Gambling Commission.
Payouts
Payouts tell you how likely you are to win at a given gambling site and casino game — and it’s not a lot of fun if you keep losing! This is why we highlight what payout rate you can expect from the leading casinos we review.
Bonuses
Almost every online casino will offer at least one bonus code to its gamblers (some new casino sites have multiple rewards). But that’s not all we consider in our reviews. We look at all aspects of a site’s bonuses, including whether it has cash only bonus funds or if you can only use the free bonus spins on selected games.
We take all these things into consideration and more when we’re deciding which websites we believe meet the high standards you expect when you’re gambling.
But most importantly, we also ask ourselves if we’ve had a good time and feel safe when using these gambling sites.
We’ve tried each and every one of the UK online casinos and we can confirm that they not only meet the standards you expect, but they also excel at them.
Introducing OnlineCasino.co.uk’s team of gambling experts
OnlineCasino.co.uk’s expert team is made up of casino gaming players, sports betting fans and gambling industry specialists. We’re passionate about playing the best online casino games, betting on the top sports, keeping up to date with the latest industry news and making sure you have the best possible experience at your favourite casinos in the UK.
Our experience enables us to review online casinos like players — because that’s what we are, players with expert knowledge of casino games and sports betting. This means you can trust when our team says a site is great for live dealer games or doesn’t have the most competitive bonuses because they’re speaking about their real-life playing experience.
The team at OnlineCasino.co.uk are really proud of their work. We take pride in writing the most detailed and accurate casino reviews, games tips and industry guides, which are fully transparent and abide by all gambling compliance rules. But the thing that makes us most proud is knowing that we’ve helped you to find the right gambling sites, with the games you want to play.
Licensing and legislation to look out for at casino sites
Credit: Flickr
The number of available betting options, range of games, bonus options, and level of payouts on offer aren’t the only things you need to look for in the top casino sites.
You also need to be certain that you’re betting at a safe casino site and that means comparing the licensing and legislation.
Having spent a lot of time looking at the most highly regarded casino sites, one thing is clear to us – you’re better off knowing the right licensing and legislation authorities to look out for than trying to compare casino sites directly.
For this reason, the top casino sites have all of the licensing and legislation authorities listed in their websites as a matter of course – if they didn’t they’d put themselves at a massive disadvantage.
With this in mind, these are the licensing and legislation authorities you need to look out for.
UK Gambling Commission
Credit: Gambling Commission
Any casino site that operates in the UK will be regulated by the UK gambling commission.
Government of Gibraltar
Credit: Wikipedia
If a casino site is licensed in Gibraltar then you’ll find the logo of the Gibraltar government on its site.
Malta Gaming Authority
Credit: Malta Gaming Authority
If a casino site is licensed in Malta then you’ll find the logo of the Malta Gaming Authority on its site.
Spelinspektionen
Credit: Spelinspektionen
If a casino site is licensed (or is able to operate) in Sweden then you’ll find the logo of Spelinspektionen (the Swedish Gambling Authority) on its site.
It’s not only the authorities that regulate casino sites you need to look for.
You also need to know that you’re using a casino site you can truly trust. It is therefore recommended that you check to see whether they have the logos of organisations that support responsible gambling.
GameCare
Credit: GamCare
GamCare is a UK-registered charity that helps people who believe they may be a problem gambler.
GAMSTOP
Credit: GAMSTOP
GAMSTOP is an organisation that allows you to self-exclude from casino sites. The idea of this is that you register your intent to self-exclude from a casino site for a set amount of time and during that period you’ll be blocked from gambling there.
How does the Gambling Commission protect UK players?
The UK Gambling Commission regulates all online casinos (established sites and new online casinos) that operate in the UK. That includes those with headquarters in the UK and those based in other countries around the world.
The Gambling Commission exists to protect UK players and it does so in the following key areas that are backed up by stringent regulations:
Fairness of casino games
Protection of players’ data
Responsible gambling
Crime prevention
Customer complaints
License enforcement
Below, we explain how the Gambling Commission protects UK players in these areas.
Fairness of casino games
The Gambling Commission approves casino games manufacturers to ensure all of their titles are fair. Online casinos are only allowed to offer games from approved manufacturers, so you can be certain that any casino games available to UK players (like yourself) are fair.
Online casinos are also obliged to hold sufficient cash reserves to ensure they’re able to pay out all player winnings in full. This means you can be sure that if you win an online casino game then you’ll get the money you’re entitled to.
Protection of players’ data
The UK has stringent laws on data protection, including for people using online casinos. All gambling sites must pass tests to demonstrate that they look after their players' data, protect funds and any records of communications from external access, and have secure and verifiable methods of payment.
Responsible gambling
All UK casinos are obliged to have strict checks and procedures to ensure people gamble responsibly and that minors don’t use their facilities.
Casinos look after problem gamblers by including a variety of resources on their sites that allow anyone (including friends and relatives of players experiencing gambling issues) to seek confidential help. Casinos must also provide players with options for self-exclusion and deposit limits, so they can control their access to games and sports betting options.
Gambling sites protect minors by having comprehensive ID submission requirements when setting up accounts. Players must provide approved forms of photo and address identification, so the sites can validate who they are and confirm they’re old enough to use their facilities.
Crime prevention
Alongside measures to ensure minors don’t gamble on their sites, online casinos are required to have procedures in place to prevent money laundering. As the industry’s regulatory body, the UK Gambling Commission has the power to take action against casinos if it believes they aren’t doing enough to prevent criminal activities.
Customer complaints
All UK casinos are obliged by law to give their players access to an independent body that will review any complaints they make against gambling sites. This independent body is known as an alternative dispute resolution (ADR) service and it provides impartial support to players.
License enforcement
All online casinos that operate in the UK are subject to the rules and regulations of the Gambling Commission. If the Gambling Commission believes that its rules and regulations have been broken then it will take action to protect its players. These actions include sanctions, fines and the suspension (even revoking) of their gambling license.
Why free spins matter when reviewing the top casino sites
Credit: Flickr
Free spins are a big money spinner for casino sites – pun, of course, intended.
Free spins can start gamblers off with credit in the bank, which they can use on slot machines. This means they don’t have to spend their own money to place a bet.
While the number of free spins you get from the finest casino sites is certainly appealing, you need to look a little deeper than this to see if you’re really getting a good offer.
The things you need to look out for include: if you have to use your spins on selected games; if there’s an expiry date on them; and if you get them all at once (some are teased out over a few days).
Free spins are certainly an important factor in comparing the best online casino sites, but they’re certainly not the only ones we care about – if anything, they are what they are: a nice little bonus and nothing more.
How do I know what the payouts are at casino sites?
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You can find out the payouts available at the best UK online casinos by looking for their RTP.
RTP is the amount of money that’s paid back to gamblers, over time, when they bet at casino sites and wager on specific games.
The way it works is like this: If a casino site has an RTP of 97% then it means that for every £100 spent, £97 is paid back to gamblers over time. This means that the site has a ‘house edge’ of 3% over its gamblers.
Credit: Wallpaper Flare
Now, before you get excited, RTP doesn’t mean that for every £100 you spend you’ll get £97 back. The reason for this is that it takes into account every gambler and every bet placed, and some people win big or lose big.
Each casino site has an overall RTP and each individual game has its own RTP (we cover the main games in the rest of this guide).
We recommend that you compare the RTP of the casino site you select and the game you play against rival options before you spend any money.
How do I pick a great casino site to bet at?
Credit: Pixabay
There’s so much for you to think about when selecting the casino site you’re going to place your bets at. There’s the games it offers, the bonuses it advertises, the payouts it offers, and lots more.
We understand this and it’s why we spend huge amounts of time playing the games, reading the T&Cs of the bonuses, and finding out the payouts at the top websites.
We have a robust reviews process that we’re proud of and reading our assessments of the best sites is a great way to pick a great one.
Credit: Wallpaper Flare
However, the most important thing is that you must know what you’re looking for.
Do you care most about bonuses, games, payouts, or something else?
Once you know the things that matter to you then you can read our reviews, find the sections you care about and decide which casinos meet your requirements.
We give you all the tools to pick a great casino, you just have to use them.
What are the key bonuses to look for at casino sites?
Credit: Wikimedia
Bonuses are one of the key parts of the best UK casino sites.
They give you the chance to earn some extra cash or casino credit to use when playing your favourite games, potentially allowing you to win some money.
These are the main casino bonuses you should look for:
Welcome bonuses
Free spins
No deposit bonuses
But you shouldn’t only keep an eye out for these rewards.
The very best casino sites offer ongoing and ad hoc promotions to their returning players. This means you should also check the VIP offering when you visit a gambling site.
Do online casinos allow card counting?
Credit: Wikimedia
Card counting is a blackjack tactic that is designed to help you make the right moves at the right times, increasing your chances of making winning bets.
While this isn’t outlawed by casino sites, it’s almost impossible to count cards when you’re playing online games of video blackjack.
However, it may be possible to count cards when you're playing live dealer blackjack games.
This is because live dealer casino games can allow you to see the action much more clearly, so it might be possible to keep a tally of the cards that have been dealt.
If you’re heading to one of the many great casino sites to play blackjack then you might want to check out the benefits of card counting.
How to find the best roulette casino sites 
Credit: Wikimedia
Roulette is one of the most recognisable casino games, featuring in numerous games, TV shows, and films. You can find the best roulette casinos by checking out our guide to high stakes roulette sites.
If roulette is the game you choose to compare casino sites against, then we recommend that you try out a few of the best roulette betting strategies.
While this won’t guarantee to increase your chances of winning, at worst it’ll mix up your gameplay and keep things interesting.
How to find the best online casino sites for poker
Credit: Pixabay
Poker is possibly the most popular card game on the planet. It’s a billion-pound industry with countless incredible events, celebrity players, and some great places to play it online. You can find the best places to play this great game by checking out our guide to the best live dealer poker sites.
Casino sites are among the most popular places to play poker and for the best ones to stand in comparison to their rivals they need a great range of games.
It’s this point on games that’s so important when comparing casino sites for their poker offering. This is because poker is the casino game where gamblers have the most control over the outcome of events.
Credit: Wallpaper Flare
The reason players have more control in poker games is twofold.
Firstly, you play against other players. This takes away the house edge because the casino sites aren’t competing against you to win.
Secondly, skill matters a lot more in poker because the betting decisions you make during games are affected by your mastery of the game – not by the pull of a lever using an RNG (random number generator), like in slot games.
There are many different types of poker and one thing we really recommend you do before you play is to get an understanding of the main types of the game – of course, Texas hold 'em is the most popular, but that doesn’t mean it’s the best type of poker for you
3 best casino sites for online slots
Casino Site | Slots Games | OnlineCasinos.co.uk rating |
PlayOJO | 2800 | ⭐⭐⭐⭐⭐ |
Mr Green | 1694 | ⭐⭐⭐⭐⭐ |
Dream Vegas | 1000 | ⭐⭐⭐⭐⭐ |
Slots are the most popular game at pretty much every casino site.
Many casino websites have hundreds of online slots titles, with the top ones offering thousands of games for players to choose from.
We’ve reviewed the leading casinos based on the number of games and the quality of their free spins offers, with our top three sites providing both plenty of titles and great rewards.
3 best casino sites for blackjack
Casino Site | Blackjack Games | OnlineCasinos.co.uk rating |
888 | 73 | ⭐⭐⭐⭐⭐ |
PlayOJO | 68 | ⭐⭐⭐⭐⭐ |
The Sun Vegas | 41 | ⭐⭐⭐⭐⭐ |
Blackjack is one of the most popular card games you can play at casino sites.
As big fans of blackjack, it was a no-brainer that we should compare the quality of the blackjack offerings from the websites we most enjoy betting at.
This is one of the most competitive comparisons of casino sites that we’ve carried out, with just five games separating the top two websites – 888 and PlayOJO.
Head over to our three favourite casino sites for blackjack now and try out their great games for yourself today.
3 best casino sites for roulette
Casino Site | Roulette Games | OnlineCasinos.co.uk rating |
Mansion | 44 | ⭐⭐⭐⭐⭐ |
PlayOJO | 37 | ⭐⭐⭐⭐⭐ |
The Sun Vegas | 36 | ⭐⭐⭐⭐⭐ |
Roulette is a classic table game that you’ll find at all the top casino sites.
This means it’s one of the most important things we think about when we’re reviewing a casino, as it needs both the quality and quantity of games you expect.
PlayOJO Casino and The Sun Vegas Casino both offer lots of brilliant games, but Mansion Casino has a few more. This is enough to make it our number one site for roulette.
Make your way over to these great casino sites now and try out their great roulette games.
3 best casino sites for poker
Casino Site | Poker Games | OnlineCasinos.co.uk rating |
Betway | 70 | ⭐⭐⭐⭐⭐ |
32Red | 20 | ⭐⭐⭐⭐⭐ |
Gala | 15 | ⭐⭐⭐⭐⭐ |
Poker is one of the most widely played games on the globe, but it’s often underrepresented at the leading casino sites.
This was true of the casino sites we reviewed, with the exception of Betway.
Betway mostly offers video poker games. However, one of the things that makes it so impressive for poker fans is that it has its own cardroom. This means that you can compete against your fellow players in real time.
Top 3 casino sites for payout
Casino Site | Payout | OnlineCasinos.co.uk Rating |
PlayOJO | 96.92% | ⭐⭐⭐⭐⭐ |
888 | 96.60% | ⭐⭐⭐⭐⭐ |
32Red | 96.60% | ⭐⭐⭐⭐⭐ |
Casino payouts are represented as the site’s RTP (return to player)
RTP is super important because it tells you what your chances are of winning some money from the casino site you’re betting at.
This tells you if the website is a good investment of your time and cash.
Check out our top three sites for casino payouts and see if you can win some money when playing their great games.
Gold medalist 🥇 PlayOJO: best casino site for 2021
Credit: PlayOJO Casino
PlayOJO Casino is our top casino site for 2021.
It’s got an enormous amount of games but that’s not the only key reason it’s so impressive. Bonuses are key to top casino sites and PlayOJO Casino has no wagering requirements.
This means that you can get the full benefits of the rewards offered by PlayOJO without having to invest your own money – once you’ve made a minimum deposit.
Top 3 features of PlayOJO Casino:
Enormous games library 🃏
Plenty of daily jackpots 💰
Lots of live casino games 🏟
You’ll struggle to find a casino site that comes close to PlayOJO for the number of games it features, with around 3,000 for you to pick from.
Head over to PlayOJO Casino to learn why it’s our best casino site for 2021.
Silver medalist 🥈 Mr Green Casino: ace all-round casino site
Credit: Mr Green Casino
Mr Green Casino has everything you need from a casino site.
It offers regularly updated bonuses, exceptional payouts, and an incredible range of sports betting and casino gambling options.
Top 3 features of Mr Green Casino:
Brilliant sportsbook 🏇
Great mobile games 🎲
Competitive payouts 💷
And Mr Green goes beyond raw data – we’re talking here about its superb customer service, excellent software, and the security we feel when we’re gambling online.
Find out why we like Mr Green Casino so much by heading to the site today.
Bronze medalist 🥉888: all the key bonuses you look for
Credit: 888 Casino
888 Casino is a casino site that’s ideal for new gamblers.
It has a great selection of games, all the key bonuses you want, and some incredible resources to help improve your gambling strategies.
Top 3 features of 888 Casino:
No deposit bonus offer 💸
Top tips in its blog 📚
Superb slots selection 🎰
888 Casino is also a great site for poker players. It has a sub-site that’s devoted to the game, with regular tournaments and a range of special offers.
Visit 888 Casino now to find out why we think it’s such a great gambling site.
4. The Sun Vegas Casino: perfect for roulette fans
Credit: The Sun Vegas Casino
The Sun Vegas Casino is one of the best casino sites for roulette fans.
Not only does the website have a solid collection of games, with the third most of the casinos we’ve reviewed, but it also has some exceptional 3D roulette titles. This adds something unique to your roulette gaming experience.
Top 3 features of The Sun Vegas Casino:
Lots of slots titles 🎰
Competitive welcome bonus ￡
Great 3D roulette games 👫
The Sun Vegas Casino is more than just a great website for roulette fans. It features a wide array of games, with something for pretty much every type of gambling fan.
Check out The Sun Vegas Casino now to find out why it’s one of the best casino sites.
5. LeoVegas Casino
Credit: LeoVegas Casino
LeoVegas Casino is one of the best casino sites for fans of table games.
You can select from a superb range of blackjack, baccarat, roulette, and poker games, with live and video options among the titles at LeoVegas.
Top 3 features of LeoVegas Casino:
Good range of table games 🂡
Trusted casino site 💻
Sports betting options ⚽
LeoVegas Casino also features a good number of ad hoc promotions, including for mobile gamblers. These have been known to include free spins and profit boosts.
Head over to LeoVegas Casino now to see what its current promotions are.
6. Grosvenor Casinos: brilliant for poker fans
Credit: Grosvenor Casinos
Grosvenor Casinos is perhaps the best casino site for poker fans.
While it features all the games poker fans want, it’s the loyalty rewards that really make Grosvenor Casinos stand out. You can get money back on your rake, earn poker player points, and lots more.
Top 3 features of 888 Casino:
Exceptional poker offering 🃏
Solid selection of mega-jackpot games 💰
Lots of bonus promos 💷
A unique feature of the casino is the Grosvenor Club. It’s a room of live games that are designed specifically for players who use Grosvenor Casinos.
Pay a visit to Grosvenor Casinos now to see for yourself why it’s one of the best casino sites.
7. Bet365 Casino: incredible for sports betting fans
Credit: Bet365 Casino
Bet365 Casino stands out among even the best casino sites for the quality of its sports betting offering.
There’s an enormous number of sports that you can cast a bet on, from football to esports. And you also get an impressive variety in the types of bets you can place, meaning that you can find the very specific part of the sport you like most and then wager on its outcome.
Top 3 features of Bet365 Casino:
Lots of sports betting options 🏇
Poker card room ♠
Loads of promotional offers 💰
Bet365 Casino’s poker card room is one of the most impressive things about the site. It’s part of the iPoker Network, which is one of the biggest online poker rooms on the planet. This means you can play against players from all across the globe.
Check out Bet365 Casino and find out why we think it’s one of the best casino sites.
8. Jackpot247 Casino: superb example of interactive gambling
Credit: Jackpot247 Casino
When it comes to interactive gambling, Jackpot247 is neer peerless among the best casino sites.
The reason Jackpot247 is so impressive is that it offers two types of live gaming. Firstly, there are traditional live casino games. And secondly, there are TV aired games.
Top 3 features of 888 Casino:
Exceptional customer support 👫
Live TV gaming 📺
Really user-friendly website 💻
Customer support is a minimum at the best casino sites but you can’t guarantee that you’ll get exceptional service. This is never a concern at a Jackpot247, as the support team is both friendly and responsive.
Try out the Jackpot247 Casino website today and test yourself at some of its great live games.
9. 32Red Casino: award-winning casino site
Credit: 32Red Casino
Winning casino of the decade is reason enough to make 32Red Casino one of the best casino sites.
32Red claimed the award in 2009 and the quality of the site has only increased since then. It now has more games, better accessibility, and a more robust website.
Top 3 features of 32Red Casino:
Impressive collection of slots titles 🎰
Good level of payouts for its blackjack games ♠
Very solid sports betting offering 🏏
One of the most interesting parts of 32Red Casino is its bingo games. You pre-buy tickets and the games have a guaranteed pot, giving you something a little different when you’ve had your fill of slots and table games.
Visit 32Red Casino now and you’ll understand why it’s one of the best casino sites around.
