Best Casino Sites UK - Compare The Best Casino Sites

Many casino sites offer the same games and the same titles, making it difficult for gamblers to compare them and decide which is the best one for them.   

There are many different things to consider when comparing the top UK casino sites – does it offer a welcome bonus? How many games does it have? Are the payouts good? 

We’ve looked at the five most important things that we believe a good casino site must-have. 

1. Welcome bonus

2. Free spins 

3. Good RTP 

4. Great games 

5. Licensing and legislation

The focus is on providing a good service to gamblers, one that gives them the games they want to play, the offers they want, and a good chance of winning some money. 

Please be aware that all bonuses and promotions mentioned in this article come with the following conditions in order to meet UK casino compliance laws:

• 18+  
• T&Cs apply 

Top UK casino sites 

Our number one casino site: Mr Green

Credit: Mr Green

Mr Green has everything you need from a casino site – great bonuses, free offers, exceptional payouts, and an incredible range of sports betting and casino gambling options. 

We’ve gambled at and reviewed some incredible casino sites, but Green is the best of all of them. Why? While it might not take the top spot in every category we use to compare the top casino sites, its figures are competitive in every area. 

And it 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 at Mr Green.

You may have other ideas when you compare the finest casino sites (every gambler has their own unique interests) but we think Mr Green is an all-round gambling website that every gambler will adore. 

You can find out our full thoughts on Mr Green by reading our review of this great casino site. 

Top 5 casino sites for welcome bonuses 

Welcome bonuses are one of the first things you spot at the top casino sites – quite literally. 

This is because a welcome bonus is a cash reward given to you when you sign up to a casino site or betting website – it’s one of the ways that casino sites convince new gamblers to pick them over their rivals. 

As you can see from our table of the top five casino sites for welcome bonuses, there’s a big difference between the money that ew gamblers can get from signing up to a casino site. 

However, while welcome bonuses may seem like free money, the reality is quite different – you will often have to meet requirements imposed by the casino sites to get your money. These include factors such as a minimum amount bet at the site. 

So, use welcome bonuses as an indication of whether to choose a specific casino site, but don’t make them the only deciding factor. 

Top casino for site welcome bonus: Betway

Credit: Betway

While many casino sites offer excellent rewards to gamblers, there was a clear winner when comparing the best welcome bonuses – Betway. 

With an incredible welcome bonus of up to £1,000, Betway is 150% more generous to new gamblers than its nearest rival – 888, with a £400 welcome bonus. 

To get this bonus there are certain conditions you’ll need to meet. Head over to the Betway site to check out what the conditions are. 

Check out the other reasons we think this is a great casino site by reading our review of Betway. 

Top 5 casino sites for free spins  

Free spins are a big money spinner for casino sites – pun, of course, intended. 

The reason for this is that free spins 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. 

Our top five casino sites for free spins vary wildly – with the top-ranked Genesis offering you 5x as many free spins as the fifth-ranked, PlayOJO. 

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 the free spins are for a specific game; 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 top casino sites, but they’re certainly not the only one we care about – if anything, they are what they are: a nice little bonus and nothing more. 

Top 5 casino sites for RTP 

RTP (return to player) is a very important factor when comparing the finest casino sites. 

Why? Because it tells you what your chances are of winning some money from the casino site you’re betting at – as we’ll explain. 

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% (as in the case of Genesis) then it means that for every £100 spent £97 is paid back to gamblers over time. This means that Genesis has a ‘house edge’ of 3% over its gamblers. 

Now, before you get excited, RTP doesn’t mean that for every £100 you spend at Genesis you’ll get £97 back. The reason for this is that 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. 

Why? Because the RTP tells you if you have a chance of making some money. 

Top casino for site games RTP: Roxy Palace 

Credit: Roxy Palace

Every casino site has an overall RTP, along with RTPs for the specific games – they’re two separate, but linked ways of showing the level of payout you get from a casino site. 

While Casumo has the highest overall RTP, Roxy Palace has the best RTP for two of the four games (blackjack, roulette) and second-best for slots we’ve looked at – while it scores very well for poker too. 

You can see how Roxy Palace scored for RTP, compared to the other casino sites we’ve looked at, by checking the table below. 

Learn about all the other reasons that this is one of the best gambling sites by reading our review of Roxy Palace, or visit Roxy Palace Casino now to try out its games.

Top 5 casino sites for games 

Games need little to no introduction when comparing the leading casino sites – they’re what makes gambling fun and the things that cause you to win (or lose) money. 

It’s really important to compare the number of games offered by casino sites. This is because it gives you an indication of whether the casino site has the quantity of betting options to keep you happy. 

However, the overall number of games offered by casino sites doesn’t tell the whole story. 

The reason for this is that casino sites are traditionally slots heavy – a gambling site may have an enormous amount of games but 99% of those may be slots titles. 

Of course, you may love slots, and if this is the case, it’s fine for a casino site to offer little more than slots. However, we recommend that you compare the range of titles offered by casino sites before you decide which one is best for you. 

Top 5 casino sites for roulette 

Roulette is one of the most recognisable casino games, featuring in numerous games, TV shows, and films. 

We compared our favourite casino sites for roulette games and found that Roxy Palace is the clear winner – not only does it have the highest RTP (by a comfortable margin) but it also has by far the most games (more than double its closest rival). 

One thing you’ll notice in our comparison table is that Casumo is above 32Red despite the latter having a better RTP. 

Our reason for this is simple – when the RTP difference is so marginal (0.2%, so £0.20 of every £100) we think that the number of games is often a better decider. 

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. 

Top 5 casino sites for blackjack

The subject of numerous films, blackjack is one of the most successful card games in the world. 

As big fans of blackjack, it was a no-brainer that we should compare the quality of the blackjack offerings from the casino sites we most enjoy betting at. 

This is one of the most competitive comparisons of casino sites that we’ve carried out. The reason for this being that we (again) were obliged to use the number of games offered to decide the winner – there’s a difference of just 0.04% in RTP between position one and two. 

Genesis won out in the end because it has close to double the number of blackjack titles that its closest rival (32Red) is able to offer. 

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. We’re not saying it’ll give you an advantage but it’s certainly something to consider.  

Top 5 casino sites for slots 

Slots are easily the best-represented of all games at most (if not all) casino sites. 

Slots are also the category of comparison where we have made the most controversial decisions when deciding on the top casino sites for these games. 

Putting LeoVegas at number one is a simple choice – it’s the casino site with the most games and has pretty the best RTP you could possibly have (a ridiculous 99.99%). 

Where you’ll see controversy is in Jackpot247 being fifth on the list, despite having more games than the casino in fourth-place, Casino.com. 

Our reasoning for this is simple: we just enjoyed the titles at Casino.com a little bit more – and fun is the most important part of any casino game. 

You may be aware of the myth of tight and loose slots. If you’re not then we really recommend you do some research on it. Why? Because buying into the myth could waste a lot of your time. 

Top 5 casino sites for poker

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. 

Casino sites are among the most popular places to play poker and for the best ones to stand 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. 

The reason for this 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 slots. 

For this reason, we have no hesitation in putting Mr Green at the top of our list of casino sites for poker. 

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. 

Top casino site for live gambling: Mr Green  

Credit: Mr Green

Live betting options is one of the most interesting categories we use to compare the top casino sites. 

The reason for this is that it’s not simply about the number of games or their RTP – it’s about how realistic they are and how good they feel to play. 

You may disagree with us, but we just feel like Mr Green gets its live casino games spot on. 

The dealers are very professional, the gameplay is incredibly slick, and the overall feel of the games is very close to what you get from a real casino – though, of course, you simply can’t beat placing a bet in a real casino. 

Credit: Flickr

Top casino site for sports betting: Betway 

Credit: Betway

Sports betting is an enormous part of gambling – billions of people bet on their favourite sports teams and players. 

Deciding which casino sites offer gamblers the most could be a simple case of picking the one with the best odds. The problem with taking this approach is that odds change all of the time and a site may have the best odds today and the worst tomorrow. 

Within reason, casino sites offer competitive odds and we think there’s another factor you should use to decide which one is best – the range of gambling options. 

When we looked for the casino site with the best sports betting options it took a long time to compare, contrast, then decide between them all. 

But we did decide on a winner: Betway. 

Betway has so many great options that it has something for (pretty much) every sports betting fan. 

An honourable mention goes to Football Index. It’s not a casino site (so couldn’t compete against Betway and the other casino sites we love) but it offers a really interesting way of betting on sports – it’s a combination of football players and the stock market.   

Credit: PXHere

Licensing and legislation to look out for at casino sites 

The number of available betting options and the quality payouts on offer aren’t the only two 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. 

FAQs

What casino sites are the best? 

There are lots of different casino sites that you can place a wager at, many of which have their own specialities. 

OnlineCasinos.co.uk reviews the top casino sites and has created a list of the best casino sites. This list includes Mr Green, Royal Panda, 32Red, Roxy Palace, and many more great casino sites. 

Are casino sites rigged? 

Casino sites that operate in the UK aren’t rigged. 

Any casino site that operates in the UK is regulated by the UK Gambling Authority – look for the logo on the website if you want to confirm the site is regulated by this organisation.

The UK Gambling Commission exists to protect gamblers and one of the ways it does this is by making sure that casino sites are fair and transparent. This ensures that casino sites aren’t rigged.

Can I block casino sites? 

You can block casino sites by using GAMSTOP. 

GAMSTOP is a UK organisation that lets gamblers self-exclude from casino sites. This means that if you choose to self-exclude that casino site is then blocked to you – you won’t be able to bet on the site because it has blocked you.