Slot Sites – Top Online Slot Sites UK

Slots are among the most popular casino games when compared to the rest, and it’s why we’ve compiled the best slot sites currently available from all casinos and providers. And new players might find it hard to not only find a perfect slot game but also the correct casino to play these slots on.

Then, of course, there’s the fun aspect. The compelling sounds and visual effects while spinning the reels will leave you begging for more. We won’t even mention how you’re in for a rewarding experience if you do win. The icing on the cake is you don’t need to step outside the comfort of your home to enjoy this experience. There are literally hundreds of slot sites to pick from. You simply need to select the right one, sign up, and get spinning. 

Here is a list of the best slot sites that are available with signup bonuses: 

  • PokerStars Casino
  • MrPlay Casino
  • Leo Vegas
  • mFortune
  • Casino2020
  • Bet365 Casino
Ratings Icon Rating
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T&C's Apply
  • No Deposit Casino
  • Huge Range of Slot Games
  • Daily Casino Tournaments

New casino players only. Valid on 7 slots. 7-day expiry. All spins must be used before cashout allowed. For deposit offer min. £10 deposit with code ‘SLOTS100’, debit card only. Terms apply.


100% Deposit Match Up To £200 + 100 Free Spins

T&C's Apply
  • € 7000 per month of withdrawal limit
  • Selection Of Payout Currencies
  • Over 500 Slot Games

18+, Welcome Bonus: Only for new players, first deposit, minimum deposit: €10, maximum €100 bonus, valid for 14 days.


100% Up To £150

  • Instant play casino
  • Hosted over 700 NetEnt games
  • Live dealer room available

200% Deposit Bonus + 100 Free Spins

  • Pay by phone £3 minimum deposit
  • No deposit welcome bonus
  • 20x wagering on bonus credits

£100 Welcome Bonus + Casino Free Spins

  • £3 Min Deposit Available
  • No Deposit Bonus
  • Mobile Focussed Platform

£100 Bet Credits

  • All wins paid in cash
  • Bonus With No Wagering Requirements
  • £5 minimum deposit

What Are Slot Games? 

Online slots are a type of casino game characterized by virtually spinning the reels of slot machines. These reels feature different visually appealing symbols, depending on the game. To play, you place a wager and spin the reels of the slot machine. Following this act, the symbols on the reels land randomly after the spinning stops. If the symbols happen to line up, you win. While the mentioned describe virtual slots, you can still enjoy physical slots found in land-based casinos. Online slots are available in a variety of options. Let’s briefly discuss the most common types below.

Classic Slots

Classic slots are the simplest type of online slots and comprise single slot games. Nick-named the one-arm bandit, classic slots are ideal for the first-timer. That’s because they are pretty simple to learn and play. To win a jackpot, you must land on three similar symbols. However, they are high variance. That means you can either win big or lose everything—fast.

Progressive Slots

If the idea of playing small penny reels doesn’t quite appeal to you, you might want to give progressive slots a try. Each time a player wagers on this type of slot, some of the funds contribute to the prize pool. Most sites happily display the total progressive jackpot prize for all to see. However, you need to wager more money than you would on conventional slots.

No Deposit Slots

So far, we’ve been focusing on real money slots, where you have to wager to play. But there are some slots where you get to play for free. Online gamblers mostly use these slots to attract players to their sites. You don’t need to make an initial deposit to play. The online casino awards you free spins after signing up, which you can use to play. But if you win, you win real money.

Mobile slots

You don’t have to be tied to a desktop to play mobile slots. Most online casinos are optimizing their slot titles for mobile platforms. You can access the casino using your mobile phone or tablet and play your favourite slots while on the go.

Branded Slots

Part of online slots appeal lies in the unmatched entertainment their offer players. The enjoyment goes up a notch with branded slots that are themed after famous aspects of pop culture. You can find such slots based on movies, TV shows, music, cartoons, books, superheroes. The list is endless.

How We Determine The Best Slot Sites 

Many players can agree that slots are the cornerstone of most online casino gambling activities. And every worthwhile gambling platform knows to include them if they are to attract players and remain viable. With that said, not all slots sites are structured the same. That’s why we take it upon ourselves to test and review the countless sites on the market and only recommend the best ones.  Our goal is to help you pick the right platform that best meets your needs and matches your gaming style.  Here are some of the features we use to determine the best sites.

Bonuses and Promotions

Bonuses and promotions are the quickest way to lure players, and slots sites know this. They boost your bankroll and top you up with many perks to make your stay at the site rewarding and enjoyable. Bonuses and promotions can come in the form of matched deposits, cashbacks, and no deposit offers. As highlighted before, with the latter, you get to explore the gaming site for free. Such a promo comes in the form of free cash, no deposit free spins offers, or free play. We compare the bonuses the sites have to offer, determine their quality, and single out the best ones.

Licensing and Operating History

Not all slot sites have your best interests at heart. In as much as there are plenty of reputable sites, there’s a good number of underhanded sites too. Our goal is to ensure you don’t wind up in the hands of shady operators. That’s why we take particular care to scout sites that are licensed to operate. We do this by checking for licensing details, including the responsible gambling authority backing the site. We prefer to stay clear from unlicensed sites that may wind up going “rogue”. Then we also check the operator’s history with the help of online reviews before giving it our stamp of approval.

Games and Software Providers

The whole point of signing with a slot site is to enjoy the gaming experience. The calibre of titles available will make or break your experience on the sites. Slots are more exciting if there is a wide range to choose from. That’s why we check the type of slots available. Does the site offer a combination of classic, progressive, and branded slots? After variety, quality is paramount. The software providers behind the game often determine whether a high-quality title complete with rich graphics and fair payouts is on the table. That’s why we go through the list of providers with a fine-toothed comb to ascertain this.

Web Design and Navigability

The best slots sites are big on user-friendliness. Nothing frustrates a player more than trying to navigate a complex gaming site. Our idea of excellent slot sites is a breeze to navigate, from signing up, depositing, placing a wager to cashing out. If you have to bump into a hurdle at every turn and find yourself contacting the customer support team constantly, you’re on the wrong site. We look for platforms that boast a simple but modern web design that is clutter-free. The best sites are well organized with easy-to-read filters that make identifying and playing a game quick and simple. 

Slot Bonuses and Free Spins Promotions

We already mentioned how slots sites try to attract players to their platforms by using exciting bonuses and promotions.  While you’ll find different types of bonuses and promos to pick from, the idea is to choose an offer that works for you. To do this, you need to understand how the different bonuses and promos work. Only then can you enjoy the promo to the fullest and get the most value out of it. Below are some of the most popular ones.

Free Spins 

Free spins are synonymous with online slot machines. As the name implies, free spins are exactly that—free. They are free bets offered by gaming platforms to attract and retain players. Using these spins, you can wager on your favourite casino slot title. But despite the spins being free, you can still bag real winnings, which can be in the form of bonus cash or regular cash. It depends on the casino. Depending on the platform, you can either receive them bundled up with deposit bonuses or as is. The platform specifies the number of bonus spins at your disposal. In some cases, they also spell out the slots you must use them on. 

Deposit Bonus

A deposit means you have to deposit real money before you can participate in any given slot. With this bonus, the slot site usually boosts your player account with a certain amount of money after your initial deposit. Such a bonus gives you more betting opportunities to spin the reels of different slot titles. Slot sites either draft deposit bonuses as a fixed amount or a percentage of your initial deposit. Generally, the bulk of deposit bonuses come with exceptionally high wagering requirements that you must meet before you can withdraw any winnings. So, you might want to keep your eyes peeled on these roll-over conditions.

Loyalty/VIP Bonus

For most of our review, we’ve been discussing bonuses that slot sites use to bait new players. But since online gamers are at liberty to jump ship when particular sites are no longer serving them, gambling platforms need to give them reasons to stay. Availing loyalty bonuses is one way of keeping players loyal. Such bonuses come in the form of deposits, free spins, or reload bonuses. Then we have the esteemed players that thrive on recognition. Gaming platforms craft VIP bonuses to appease their elite gamers and to show appreciation for their continued patronage.

No Deposit Bonus

As mentioned before, no deposit bonuses are among the most coveted types of bonuses. Slot sites use these bonuses to lure bettors onto their sites. With this type of bonus, you don’t need to wager a single cent on the platform to play the slots. You only need to register with the platform in question. Once your player account is up and running, the site credits your player account with bonus funds or free spins. You can go ahead and use the bonus to spin the reels of associated slots. If you win, you win real cash. Such a bonus is perfect for familiarizing yourself with the site without risking your funds.

Online Slots Cashback

Online slot sites use cashbacks to compensate players who would have lost while spinning the reels of certain slots on the platform. As you know, gambling is always a risk, and there is no guarantee of winning. Should you lose, a platform offering a cashback bonus allows you to recover part of your losses after wagering. However, rarely do you receive your entire wager back. The site usually caps the cashback amount you can receive. As you can imagine, this is the perfect bonus to stop your player account from prematurely hitting rock bottom.

Best Real Money Slots to Play UK 

As previously highlighted, slots are largely popular because of the massive appeal they bring to gamers. Their fascination is heightened by the different options you have at your disposal. To date, there are countless software providers continuously churning out slots to satisfy their followers. But slot titles are very different. Some have managed to garner unmatched support from players the world over, while some are downright mediocre. Several aspects such as gameplay, payout, volatility, enjoyment, and variance make a slot game popular. Based on these mentioned factors and more, here are some of the best real money slots to play in the UK.

Gonzo’s Quest

Put your adventure hat on and join Gonzo, the Spanish explorer, as you go on a quest to search for the lost golden city of El Dorado. By taking part in this game, you’re playing one of Netent’s most timeless slots. The game features 5 reels and 20 paylines. Enjoy the flexible betting limits ranging from £20 to £50 per spin to suit various bankrolls. If the odds are in your favour and you hit the jackpot, you get to bag the maximum win of 2500x your bet. Dive into exciting features on this game, which include avalanche multipliers, wilds, and scatters bonus rounds.

Mega Moolah

Spin the reels of Microgaming’s most iconic slot game Mega Moolah and possibly win a life-changing jackpot. To date, the title’s highest winning world record stands at a jaw-dropping £18 915 872 .81. By diving into this slot game, prepare for a riveting experience as you look out for the wild African animals that are lurking in the desert. Combine this with the free spins, scatters, wilds, and randomly triggered jackpot bonus game, and you’re in for an adventure of a lifetime. This game has 5 reels and 35 paylines.

Immortal Romance 

Explore the world of love between humans and vampires in this fantasy-themed game from Microgaming. The iconic slot game features 5 reels and 243 paylines, allowing you the opportunity to go home with significant wins. You get to spin any of the four characters in the game, namely Sarah, Michael, Troy, and Amber, each of who comes with their own intriguing back story. And you can win up to 365,500 coins with one spin by playing this medium volatility game. You have the chance to boost your winning chances by collecting scatters to unlock free spins to use on the game. 

Book of Dead

Channel in your explorative nature and join Richie Wild, the legendary Egyptian explorer, on his quest to bag huge wins. The high volatility game was designed by Play’n GO and boasts 5 reels and 20 paylines. Bets as little as £0.10 get you in the game. If your pockets are deep enough, you can go as high as £100. You’ll be captivated by the Egyptian-themed slot inspired by stunning graphics characterised by rich jewels with gold accents. A wide range of exciting features at your disposal includes free spins and high payouts.

Game of Thrones

Take part in the movie-themed slot title, Game of Thrones, also produced by the legendary Microgaming. The game uses 5 reels and 243 payouts that give you more chances to win. Become a part of this iconic series by choosing your horse and get to travel through the seven kingdoms of Westeros in your quest to seize the throne. Explore some of the game’s most outstanding features, which include exclusive free spins, rewarding multipliers, and exciting bonus rounds.

Mobile Slot Sites 

The modern gamer has the privilege of immersing themselves in their favourite slots from almost anywhere. That’s because most slots sites have optimized their platforms to be compatible with mobile devices. Depending on the site in question, you can access your favourite slot using an Android, iOS, or Windows device. Most sites replicate their desktop versions to offer you a familiar gaming environment. 

Using the mobile version does in no way shortchange your reel spinning experience. Most slot sites also afford players fast download speeds for seamless gameplay. Other sites even take it a step further by devising dedicated mobile apps. In this case, you’ll need to download the site’s app first onto your mobile device before you can access the slots. When using a mobile app, a well-designed game performs even better and quicker when compared to mobile browsers. Also, native apps tend to save players’ time by remembering users’ preferences and taking proactive actions on the player’s behalf.

Whichever the case, we’ve tasked ourselves with providing you with some of the best slots sites that offer unmatched mobile compatibility. Most, if not all, of our recommendations excel, were fast and intuitive mobile gameplay is concerned.

Online Slot Sites Software Providers 

The quality of an online slot, for the most part, depends on the software studio behind it. Over the years, we’ve seen software providers erupting left, right, and centre in a bid to seize a chunk of the gaming market share. Some software studios have remarkable handbooks to work from, resulting in the continuous designing of top-tier games and then some. Since our goal is to serve you with the best of the bunch, find below some outstanding studios that leave players raving.


NetEnt is one software studio that needs no introduction when you discuss leading studios. The legendary software developer has earned itself a reputation for designing high-quality slots ever since its inception. Founded in 1996, the premium software studio has several awards under its belt, such as the EGR Innovation in Mobile award, Slot Provider of the Year, and RNG Supplier of the Year. Part of the reason why the studio is considered one of the best is that it uses the latest in gaming technology to craft top-performing games. Some of the best games to come out of the studio include the iconic Starburst, Gonzo’s Quest, and Mega Fortune. 


Microgaming is yet another renowned software studio that has earned its stripes as one of the outstanding game developers to date. Launched in 1994, the game developer launched its very first online casino software in 2004. From there, it has been developing one innovative slot game after another. To date, it has over 800 slots, with titles like Mega Moolah, Game of Thrones, and Lara Croft being among the notable titles. It seems the studio isn’t only a hit with players. But it has also managed to impress industry authorities to bag awards such as Platform of the Year and the Gaming Intelligence Hot 50.

Play’n GO

Play’N Go is another award-winning slot studio that joined the growing list of game developers in 1994, but as a subsidiary of other prominent software companies. It’s not until 2005 did the Swedish company start operating independently. Since then, it has grown to be one of the coveted software studios known for creating high-quality online gaming content in over 30 languages. Big hits to come out of the studio include Book of Dead, Reactoonz, and Moon Princess. The studio also boasts several awards, including the coveted Slot Provider of the Year award.


You can’t discuss iconic software companies without mentioning Playtech. The software giant has been in business since 1999 and is recognized as a market leader in the online casino gaming world. Playtech manages to leave its competitors in the dust is by creating high-level slots with crisp graphics and simple gameplay. Some of the best titles to capture the hearts of players from this studio include Age of Gods, Desert Treasure, and Cinerama.


Last but not least, we have Yggdrasil, an independent software developer based in Midgard. Compared to the veteran studios mentioned above, this is one of the “newer” iGaming providers launched in 2013. Its competitive edge lies in creating cutting-edge slot titles to keep players engaged. Most of the slots from this studio are unique and innovative, proving that the studio is a game-changer in the gaming world. Does it have awards to back this fact up? Yes. The studio currently holds the 2021 Slot Provider of the Year from the prestigious IGA’s. Some of its best slots include Double Dragon, Nirvana, and Jackpot Riders. 

Online Slots Terms and Features 

Casino games tend to be simple to grasp, and few games are simpler for a new player to understand than slots. It’s pretty much just about spinning reels and waiting eagerly for your prize or a chance to spin again. But, despite the simplicity of the game, there are still some terms and concepts that you may want to familiarize yourself with before hitting the slot machine. Here, we will break down a few of the most common terms you’re likely to come across as an online slot player. Getting to know these will unquestionably help you pick out the best slot games and thus improve your overall online gambling experience.


The number of pay lines available in a game is one of the most important features of any slot machine. A payline is a pattern that a winning combination needs to land along to win a prize. It can be straight, diagonal, or zig-zag in many directions. There are X amount of paylines in any given slot, whether that number be 1 or 100. As a slot player, you will only win payouts on lines that you bet on. It’s worth noting that if you only bet on 10 of 25 paylines and the winning combination falls on a line that you didn’t bet on (or activate), you get nothing for that combination. 


A wild slot symbol substitutes for any other symbol in the game (except usually for scatter or bonus symbols) to help you create a better winning combination. Slot game wild symbols have existed since the first “One-Armed Bandit” slot machine was introduced to casinos. The best comparison is that wild symbols are like the joker in a deck of cards. This means they can be used with any symbols on the reels to create winning combinations. For example, if you have the same symbol on reels 1 and 3 and wild on reel 2, this will then create a winning combination.


Scatter symbols reward the player with a payout and often unlock a bonus round or special feature of some sort. Unlike symbols that have to be lined up on paylines for you to win something, the scatter just has to be there on the reels to grant you free spins, mini-games, and/or other bonuses. Scatter symbols are usually one of the highest paying symbols in a slot game and are represented by a specific graphic that is unique to the theme of the particular slot title. 

Bonus Rounds and Free Spins

Probably the easiest to understand, bonus rounds and free spins are exactly how they sound. Bonus rounds are great because they allow you to make specific decisions that can help them earn extra prizes. Free spins are similar in that they’re opportunities to spin the reels and win prizes without having to wager. You can earn them while by playing the game a lot or by claiming various casino bonuses users are offered. We highly recommend taking advantage of these if you want to make the most out of your online slot playing experience.


We love these! A multiplier is a feature or symbol that significantly increases your winning payouts. For example, a 3x multiplier triples your win. As you can imagine, coming across multipliers can take an average night on the online slot machine and turn it into one of the best nights of your life. Just like with all the other terms in this section, we encourage you to familiarize yourself with how to find as many of these as you can. Once you get a multiplier, it can really change a lot about your payout.

Slot Sites Payment Methods

It’s true that playing with risk online is and can be a very fun experience that many do simply for the joy of gambling. However, another motivator for many casino gamers is getting a decent financial return. Playing on real money slot machines is a lot better when you have great banking methods for your deposits and withdrawals. So, we’ve included an explanation of some of the payment options that are available on the best online slot sites.


This is one of the most popular payment methods you’ll come across. Everyone and their grandmother use Visa or Mastercard in some capacity, and for good reason. They’re one of the most trustworthy payment processors out there with secure payments. Your transactions are processed faster than with most banking options and making an account is easy and convenient since banks are everywhere. All you have to do to open a Visa or Mastercard debit card account is go to a bank with your ID, pay a small fee while also depositing some money into the account. Fill out a form and there you go. You now have a debit card to use for your favourite online slot machines.


One of the more popular online payment processors, PayPal has greatly risen since it was founded in December of 1998. More and more of the best online gambling websites are starting to offer it as one of their accepted payment methods and it’s not surprising. Payments are processed fast and easy. Making a PayPal account is also very simple and can be done from the comfort of your couch. For more security with your transactions, you can also connect your credit or debit card to your PayPal account.  This way, payouts can go directly to your bank and deposits can be charged to your bank account.


Owned by the Paysafe Group PLC, Skrill is also becoming one of the most popular virtual banking options in the game, with many websites offering it. The company operates in over 200 countries worldwide with a global workforce of over 500 employees from 30 countries. Like the others we’ve discussed, the payment processor is known for its transaction speed, ease of making an account and security. They also offer great 24/7 customer support when you need it.


Boku is one of the most secure payment methods out there and its popularity is growing every day. It allows customers to charge digital goods and services to their mobile number. Many of the best online slot machine sites have adopted Boku as one of their banking options. Each purchase requires confirmation of the charge before it can be successfully completed, which makes it a little slower at processing payments than other methods. Making a Boku account is simple, though, and doesn’t take much time.

Bank Transfer

A bank transfer is when money is sent from one bank account to another. Transferring money from your bank account is usually free, faster, and allows you to make bigger payments than other banking options. Making an account is easy. Once you’ve done it, all you have to do to use it is log in to your online casino account and select the option for making a payment. Follow the casino-specific instructions and enter your bank details. Some banks also allow you to use smartphone apps to initiate transactions.

Frequently Asked Questions

Many people who are new to online gambling and slot machines often have a lot of questions they would like answered when they get their feet wet. We come across dozens of questions about this awesome way to spend your free time. So, assuming you also have some questions to ask, we’ve taken some time to include 5 of the most popular questions we get and their answers. We obviously can’t answer every inquiry you might have here, but assuming this guide left you with some unanswered questions, feel free to contact our team. We’d be happy to help you.

How can I avoid rigged online slot machines?

You need to make sure that the casino you are playing on is fully licensed by the relevant regulator in your region. Game safety is one of a quality online casino’s highest priorities as most smart gamers need to know they can trust the platforms they’re playing on. Thus, licensing information is made easy to find so you don’t worry about whether the operator is trustworthy or not. To avoid rigged slot machines, you can also check our reviews and go with other selections of top sites.

Can I play online slots on my phone?

Yes, you can. Almost all online casinos have a mobile version, be it a downloadable app or a mobile version of their website. Many apps are available both on Android, Windows and IOS, though not every app is downloadable off of the relevant mobile app store you use. This means that you’ll have to get the app from the website, which is usually a simple process that the operator lays out for your convenience. Apps generally are just as good (with some being even better) than the casino website, and being on your phone often makes them more user friendly and navigable.

Which operators offer the best slot machine payouts?

There is unfortunately no single slots site that offers the biggest payouts. This honestly just depends on the games that you are playing, which can span across multiple sites. But, if you want a good idea of whether or not a website, you’re on offers high payouts, besides looking at reviews or lists on our website, you can do some research. Look up the website’s profit margins. Generally, low-profit margins mean more money going into either maintaining the quality of the website or into the player’s wallets. So, if you’re looking for larger payouts, websites with low-profit margins are good places to look.

Can I use my free spins on any slot machine?

Unfortunately, not. Free spins are almost always limited to specific games as stated by the online casino you’re betting at. Starburst is often a popular one for these types of offers. A good rule of thumb for when you receive free spins for the slot machine or any other online casino bonus is to read the terms and conditions associated. This will give you a better understanding of all the limitations and restrictions of the bonuses so you know exactly when and how to use them.

What’s the maximum amount of money I can bet on online slots?

This largely depends on the website you’re playing at. Many slot sites impose limits on how much money one can bet on their casino games. This is usually to protect users from spending too much but can also be meant to prevent lucky users from breaking the system by winning too much money. Though, a website may also impose limitations on how much money can be won and/or withdrawn from specific games. This information is usually always plainly stated in the terms and conditions of play.


You’ve reached the end of our introductory guide to the world of online slot sites. Hopefully, you’ve learnt a lot about the ins and out of online slots machines, the different kinds of games you can play and the criteria we use to determine what the best slot games are. You should also have a good idea of what bonuses you’re likely to come across on the best real money slot machines online.

In addition, we’ve discussed the most popular software companies that make excellent slot and casino games, some of the most commonly used slot jargon, and the payment options you’re likely to use. As you can see, there’s a lot more to this simple casino game than you may imagine at first. But, once you have a good base of knowledge, you can definitely make sure you have a good time playing. 

Even though there’s always more to learn to enhance your online gambling experience, nothing beats going out there and playing as much as possible. You should be ready to check out our best slot websites and start spinning reels.

Jake has been writing and reviewing casino brands in the industry over the last decade and has won several awards for his work. He uses his experience to establish reviews and comparisons between casino sites and sources the best slot sites, casino bonuses and more!