Best Slot Sites in the United Kingdom

Are you looking for the best slot sites, offering only the best games from the world’s number one providers? We’ve listed the top online slot sites where you can play slots for real money – and win real money too!

Last Updated on 26/10/2021 by George Mizzi

How We Select the Best Slot Sites

We have some suggestions of the top platforms where you can enjoy all the best online slots. Casino sites that accept players from the UK, are a particularly good choice. And the reason for this is that all the top slot sites in the UK are regulated by the highly respected UK Gambling Commission and hence are safe and fair online casinos where you can enjoy your favourite games.

Slot games are by far the most popular type of online casino games. And so it’s hardly any wonder that this is the most numerous and vibrant category of games, as well. Naturally, there’s also a large number of platforms offering online slots. But with such a sea of options to choose from, it can be difficult to narrow down the selection. So we’ve decided to do that for you. Picking out the best slot sites and best slot casinos particularly is no easy feat. Here’s how we go about the process.

Slots Variety


Slots come in different themes, with numerous different structures and are often built to accommodate different sized pockets. That is why it’s essential that an online casino not only feature the top slot games, but also have plenty of variety for players to choose from.

Slot Site License


Licensing is paramount when dealing with any type of online slot site. We look out for the licenses of the casino sites we list, and we also pay attention to the exact authorities who have issued the licenses. This is the #1 one means of ensuring a casino will treat players fairly.



Payment methods are important as well, and just as with the games – there needs to be a decent selection for players to choose from. We also look at the exact type of payment providers supported, noting those that are exceptionally secure, convenient and fast.

Customer Service


Customer service plays a vital role in the slot site’s daily operations and we make sure that it is up to par. The casino’s representatives need to be able to provide adequate assistance for players, resolve issues promptly and have a quick response time.

Slot Sites with Bonus Offers and Exciting Extras

Casino offers are a huge deal in the iGaming industry. You will be very hard-pressed to find a site that doesn’t offer any bonuses. And the more time goes by, the more generous these promotions and bonus offers tend to become. Furthermore, slot sites with bonus offers are also becoming more creative in the way they package these offers. Common examples of your most frequently encountered types of bonuses include welcome packages and reload offers. And in both cases, players usually need to make a deposit to claim whatever bonus is stated in the promotion.

But there are also many more types of online casino bonuses to take advantage of out there. For instance, free spins on registration UK are a trendy type of bonus aimed explicitly at slot players. They’re a great way to get some extra value for your money. And in most cases, they also provide a fun, risk-free way to explore new games at the online casino. Also, the top online casinos have sophisticated VIP clubs and loyalty programs to reward returning players. And by becoming a member of these programs, players can benefit from more exclusive promotional offers, including even personalized bonuses and freebies.

Slot Sites with Free Spins

Free spins bonuses are perhaps the only type of casino promotions aimed at a specific kind of game – slots. And since this is by far the most played category of casino offerings, there’s a sea of slot sites with free spins bonuses out there. However, not all such bonuses are made the same. And as it so happens, just like with other types of bonuses, there’s a variety of packages that free spins can be delivered in. For instance, you can receive free spins as an addition to the main bonus in a casino’s welcome offer on your first deposit.

Alternatively, you may not even be required to make a deposit. Popular offers like free spins for adding card, for instance, only ask that you add your bank card to your casino account. And then, you can also benefit from free spins that come in various sized packages. A prevalent number of free spins often seen at online gaming sites include 20 free spins. And you can check out our list of some of the best promotions currently offering that exact amount.

Slot Sites No Deposit Bonus Offers

Among the many different promotions you can find on slot sites, no deposit sign up bonus uk offers have to be among the most attractive. And it’s only reasonable because you get to enjoy some free cash without having to deposit any money of your own. And on the best slot sites, no deposit bonuses can generally take two forms. They can either be offered as bonus money, which you can then use for various casino games. Or, which is perhaps the more common scenario, the no deposit bonus can come in the form of free spins. And in that case, obviously, the bonus would be intended for slot games.

It’s common for free spins bonuses (especially those offered without a deposit) to be granted for a specific title or maybe a selection of several titles. So one thing to always check with such offers is the exact slots they’re provided for. After all, to make those free spins count for something, you want to use them on a game or games that really appeal to you. We’ve rounded up some of the best no deposit bonuses on the market – all in one place. Feel free to browse through our list and see if you may find an offer that catches your eye.

Slot Sites with No Minimum Wagering Required

No wager free spins are another fantastic, albeit less frequently found, type of bonus offer. You can check out our list of current no wagering free spins promotions for an overview of the hottest offers at the moment. But here’s what makes this type of bonus remarkable. All other types of bonuses usually have wagering requirements attached to them. This means that players have to stake the value of the bonus (in most cases, sometimes it can be the value of the bonus combined with that of your deposit) a certain number of times.

And once they have done so, they release the winnings and can be free to cash them out. In the case of slot sites with no minimum wagering bonuses, there’s no such requirement. Hence, any winnings from said bonuses are yours to keep immediately. Such bonuses are usually offered as a form of cashback, or often also as part of casinos’ loyalty programs. But it’s not impossible to find small no-wager freebies aimed at new players, as well. Of course, in this case, you will most likely need to deposit at the site. But as a result, you get to benefit from some genuine, free added value.


Unique Slot Sites

🇬🇧 Best UK CasinoCasino Joy
👨‍💼 Top Live CasinoVegas Hero
🏵 Best Roulette SiteMetal Casino
📌 Best PayPal CasinoCasino Lab
🎁 Top Casino BonusCasino Gods
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Best UK Slot Sites Payment Methods and What to Look For

So say you’ve shortlisted some of the best UK slot sites based on their safety, design, active promotions, etc. Another thing to add to the list of criteria at this point would be the casino payment providers. This is a critical section of all UK slot sites that should never be overlooked. For one, you need to make sure that you can actually fund your casino account somehow. And if the casino doesn’t support any of the payment methods at your disposal, that’s just not going to happen.

So when browsing through the respective section of these slot sites, UK players should especially also pay attention to country availability. Some payment processors may not be available in the UK. To get an idea of what payment processor may be better suited for you, you can browse through our selection of casino payment methods.

In addition to that, it’s also good to check whether or not your payment method of choice is also available for withdrawals. Online casinos all follow the standard safety rule of allowing withdrawals only via the same method that was used to make a deposit. So it’s best to choose one that works for both transaction types right off the bat.

Best UK Slot Sites by Payment Method

Payment ProviderDeposit TimeWithdrawal TimeBest Casino Site
visa card casinosInstant4-6 business daysspinit casino
mastercardInstant4-6 business daysMetal casino
PayPal CasinoInstant3 business dayscasino lab
Neteller CasinoInstant3 business daysluckland casino
skrill CasinoInstantInstantcasinogods
paysafecard logo InstantN/Akassu casino
ecoPayz casinoInstant3 business dayssloty casino
trustly casinoInstant3 business dayscasoola casino
Zimpler logoInstantN/Avideoslots casino
boku logoInstantInstantcasino cruise casino

visa casino payments logo

Deposit Time: Instant  

Withdrawal Time: 4-6 business days  

Best Casino Site:
spinit casino

mastercard logo

Deposit Time: Instant  

Withdrawal Time: 4-6 business days

Best Casino Site:
Metal casino

PayPal Casino Payments Logo

Deposit Time: Instant  

Withdrawal Time: 3 business days

Best Casino Site:
casino lab

PayPal Slot Sites – Where Safety is Guaranteed

PayPal is one of the best-known payment providers out there and the number one e-wallet globally. And it didn’t achieve that status for merely offering a convenient service, although that’s a big part of it, as well. Since its inception, PayPal has been extremely strict about safety and protecting its customers. And with that in mind, the payment processor only does business with reliable merchants that can prove their security practices.

Hence, casinos that accept PayPal are by default seen as reputable and highly secure platforms that players can be safe at. And luckily for everyone, PayPal slot sites are increasing in numbers as the service is becoming more widely available in the iGaming industry. What’s more, aside from being so secure, PayPal is also fast and accepted in many countries. Furthermore, the provider supports a whole range of global currencies and is available in many different languages.

Pay by Phone Slot Sites – Boku Casinos

Boku casino sites allow players the opportunity to make deposits using nothing but their phone number. Boku is an exceptionally popular payment provider for UK players. Its only drawback is that it doesn’t offer the option for withdrawals. But it offers so much more in exchange for that. Once you have that, you’re just a few clicks or finger taps away from being able to enjoy the best mobile slots. With Boku, the size of your deposit is simply charged to your monthly phone bill. And if you’re using a prepaid card, then then the deposit is deducted from your balance.

And the way these payments work makes them exceptionally safe and anonymous for users. There is no sharing of private information or financial details with the casino. And hence, there is no risk of your sensitive data being exposed or leaked in any way. This is what has made Boku the preferred payment method of choice for so many players around the world.

Best Online Slot Sites Game Providers

There are many online slot providers on the market, but only a handful of them are truly regarded as the best online slot providers. These are companies that have already been around for a long time, some even for decades. And they’ve established themselves as the benchmark for high quality games. Games by these slot game providers have made a name for themselves for delivering exceptional levels of entertainment, innovative features and ever-improving graphics and visuals.

But aside from that, these are also games that can deliver satisfying wins. Whether they’re high variance offering or less volatile ones, on gaming experience can be complete without the right amount of return on your investment. And fair play is a huge part of that, mind you. So these companies are also audited and regulated, the same way as online casinos, in order to ensure that their games aren’t rigged.

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Netent Slot Sites

Netent is one of the major names in the iGaming industry, especially when it comes to slots. The Netent game provider has conquered the hearts of players around the world with uniquely atmospheric, high-quality offerings. And with each year that goes by, Netent casinos become more and more vibrant with superb visuals and ambient themes. In addition, one of the reasons players flock to slot sites featuring offerings from this developer is the unique features. Netent has a reputation for creating unrivaled game features you won’t find elsewhere.

And while many of the offerings may have a seemingly simplistic structure, those features make them incredibly charming and attractive to players. So much so that many UK slot sites even use popular Netent slots at the forefront of their promotional campaigns. Take, for instance, well-known titles, such as Gonzo’s Quest or the hit slot Starburst. Speaking of which, these are precisely some of the titles you are bound to find free spins offers for at online slot sites.

Best Mobile Slot Sites for Phone & Tablet

Mobile slots are pretty much a requirement these days more than a luxury, as they were only a few short years back. With a lion’s share of our internet usage now taking place on our smartphone and tablets, being able to play slots on mobile devices has pretty much become the norm. You can also check out our full list of mobile phone casinos to make sure you are playing at a top-notch mobile slots site. As a matter of fact, around half of online gamblers prefer to do their gaming on mobile slots.

Free or demo versions of the games are available for gadgets the same was a real money play. And the majority of slot games manufacturers have long adapted their offerings to meet the need for mobile slots. Casino sites have also played their part in optimizing their platforms to fit in smaller screens. And as a result, today players can enjoy in-browser gaming just as easily and hassle-free on mobile devices as on their desktop counterparts. Furthermore, many online casinos have even developed their own apps. So for even faster access to all your favorite mobile slots game titles, you may choose to download the respective app for Android or iOS.

Top 10 Mobile Slots:

1. Book of dead – Top Ancient Egypt Slot.
2. Reactoonz – Best 3d Slot Game in the UK
3. Mega Moolah – Best Jungle-themed Sound.
4. Fire joker – Top Classic 3-reel slot.
5. Gonzo’s quest – Best Adventure Slot for 2021.
6. Starburst – Most Played Mobile slot in the UK.
7. Contact slot – The Perfect Atzec Game.
8. Mega joker – Top Progressive Slot by Netent.
9. Dazzle me – Best 5-reel Slot Game.
10.King Kong – Best Movie Themed Mobile Slot.

Different Types of Online Slots

As pointed out, slot games are the most versatile type of online casino games. Slot games differ by style, theme, structure and a whole list of other factors by which they can be grouped. Here is a list of some of the most popular kinds of online slot titles.

Multi-Payline and Multi reel


These are the more common and more modern variations of slot games that come with more than just 3 reels. Usually they offer much more flexibility in terms of betting options. And as a rule the setup in multi reel slots and multi payline slots is much more diverse and often includes various special features and bonus rounds.

Video slots


Video slots are basically all slot games that allow you to play via screen as opposed to the old-school mechanical lever and reels. Hence, all slot games that you come across online are video slots. And thanks to them being digitalized, this has allowed developers to so massively diversify the market of slot games.

Progressive jackpot slots


Progressive slots are highly attractive to many players because they offer the chance to win huge by hitting the progressive jackpot. Progressive jackpots, in turn, constantly increase as a small amount of each bet made by players goes towards the jackpot. This is also why the stakes in progressive slots may be a little higher.


Best Slot Sites for December:

US Players not Accepted
  • Wide Variety of Live Dealer Games
  • Simple and Clean Website Design
  • QuickSpin Casino
18+ New players.£10 min deposit.£5 max bet.40x wagering applies.Bonus valid 14 days.20 Spins on Starburst credited instantly+20/daily for 9 days.Free Spins valid for 72h.Max Free Spins winnings £100.Ewallets excluded.T&C Apply
US Players not Accepted
  • Huge Game Lobby
  • Professional Customer Support
  • Unique Design
18+ New Players.100% bonus on first deposit up to £50 & 50 bonus spins(1st day-30,2nd,3rd-10) for Book of Dead only.Min dep £20.Max bet £5.Max cash-out £250.40x wagering.Bonus expiry 30days.Spins expiry 2days.Game restrictions.T&C Apply.
US Players not Accepted
  • Live Dealer Games Available
  • Great Selection of Slots
  • Professional Customer Support
18+ New players.£10 min dep.£5 max bet.40x wagering.Bonus valid 14 days.20 Spins instantly+20/daily for 4 days on Starburst.Free Spins valid 72 h.Max Free Spins winnings £100.Ewallets excluded.T&C's Apply


More Slot Sites to Explore


Slot Sites FAQs

What are slot sites?

Slot sites are online gaming sites (i.e. casinos) that offer slot games in their library. Slots are by far the most popular type of online casino game, so the overwhelming majority of online casinos all offer slot games. You can check out the best of them here.

What are the best online slot games?

Slot games vary greatly depending on what you’re after in a game. So to find the best slot game for you, you need to consider its variance, theme and setup among other things. But a good starting point for everyone is to look for slots from well-known providers with a high RTP.

What types of slot games are there?

Slot games range from classic slots, to multi-reel and multi-payline offerings. Some offer basic gameplay, whereas others include bonuses and special features. Some slots can have jackpots. And slots can also be grouped by genre (e.g. arcade, adventure, etc.).

Can you play slots for free?

For the most part, yes. There are certain titles that don’t have a demo mode, but the majority of titles will allow you to test them for free. If you don’t find this opportunity on the site of a casino, then you should be able to try the games on the site of the developer.

Are there slot game bonuses?

Yes, and plenty. There are endless types of bonuses that can come from the slot games itself during gameplay. And then there are also casino bonuses that are directed at certain slots, such as free spins, for example. We have a list of some of the best bonus offerings from the top online casinos, so be sure to have a look.

Can I play slot games on mobile?

Yes. Most slot game manufacturers have optimized their offerings to be integrated across all platforms. And some online casinos even have their own apps, which are also entirely compatible with almost all online slot games.


Author: George Mizzi
Chief Slot Analyst
When it comes to slot games, no one knows them better than our chief slot analyst George Mizzi. George started playing video slots back in 2011, and since then, he became inquisitive about all things slots. He became entrenched in the mechanics of them and quickly became an expert in how slot games work.