Best Slot Sites UK

With so many UK slot sites in the market, making a choice can be incredibly overwhelming. To help you make a quick decision, our team of experts have reviewed and tested all the online slot sites available to UK Players. So all you have to do is choose your favourite! Show more

The Best UK Slot Sites 2022

Slot Sites Explained

Slots sites are exactly what they say they are – online casino sites that offer a massive choice of slot games from hundreds of slot providers, developers and studios. You still receive the same experience as you would at other types of online casinos like new online casinos, best online casino sites and live dealer casinos, but the focus is very much on slots.

It's not unusual for slot sites to stock their games lobbies with more than 1,000 of the best slots, but brands such as Videoslots offer 3,300+ online slot games. This means you can access different types of slots – classic, video, three-reel, five-reel, Megaways and jackpot slot games from the best slot game providers.

While slots sites focus on slots, most also offer other online casino games such as roulette, blackjack, baccarat, poker, instant win, live dealer and even lottery betting. What’s more, you can still enjoy other aspects of playing at online casino sites such as welcome offers, ongoing bonuses and rewards, loyalty schemes and a good choice of payment options.

List of the Best Slot Sites UK


💷 Best Slot Site for Cashback All British Casino
🆓 Best Slots Site for Bonus Spins STS Casino
⚡ Best Slot Site for Fast Payouts Casino Gods
📱 Best Mobile Slot Site Swift Casino
💸 Best PayPal Slot Site Casino Lab
💰 Best Slots Site for Jackpots Genesis Casino
🎰 Best Slots Site for Game Variety Play Ojo
🆕 Best New Slot Site Race Casino

How We Ranked the Best Slot Sites

Every UK slot site that makes it to our list goes through a rigorous testing process. We not only register, deposit, and play slots, but we also dig a little deeper. We check other players’ opinions and compare the offers of the site to our criteria. Some of these criteria include:

UK licence

At, we consider licensing to be the most important rating factor. The best slot sites in the UK are licensed and regulated by the United Kingdom Gambling Commission (UKGC). The UKGC was set up under the Gambling Act 2005, to regulate the activities of casino gaming sites in the UK. All online slots we recommend hold a licence from the Gambling Commission. They also have a great track record with the regulatory body which makes them the safest gaming option for you.

Slot game offering

The gaming library of a UK online slot site easily reveals how exciting playing at the site would be. A large selection of games, generally over 1,000, plus a good mix of themes makes for an exciting time. A mix of 3-reel, 5-reel, and 6-reel slots, with features like bonus rounds, megaways, free spins, and progressive jackpot slot games sends the right signals. We also have a preference for slot sites that provide titles from the best software providers in the industry, including Pragmatic Play, Microgaming and NetEnt.

Safety and Security

Safety and security are important features for any online casino slot site. Players should be able to enjoy their favourite real money online slots without compromising their financial and personal information. When it comes to safety and security, we check for several features. The most important is a security certificate or encryption. This is known as SSL encryption which appears as a padlock icon in front of the URL of a slot site. We only go for slot sites that provide players with the highest form of safety and security.


The reputation of an online casino is an important factor that reveals just how user-friendly it is for new players. We take a look at the companies behind these casinos to ensure you're playing at a safe and secure slot betting site. We also track how well the brand has fared since its inception. Players’ reviews play a key role in our final decision. An online slot site with a record number of customer complaints is a red flag in our opinion. We ensure that only slot casinos that have a 4 or 5-star rating make it to our list  

Bonuses & promos

There are diverse bonuses and promos offered by online casinos and gambling sites in the industry. However, with slot sites, only slots bonuses really matter. Many of the leading slot casinos offer free spins on slot games. New players at these sites are welcomed with no deposit free spins or free spins on their first deposit. In some cases, the free spins will be limited to selected casino slots. Other casinos would give you the freedom to select your preferred slots. We aren't only after attractive welcome bonus offers, ongoing promos are also a must. Within these offers, players could find random cash prizes, slot tournaments, free spins, cashback bonuses, and a loyalty program.

PlayOjo is one of our most popular casinos offering wager-free welcome spins.

User experience

A great user experience comes from having all the right features and using them properly. A slot site with thousands of slots cluttered or poorly organised will not offer any excitement. In addition, a slot site that is not compatible with the most popular desktop and mobile platforms will be restrictive. At, we only consider online slot sites that allow for easy navigation, and gaming on the go.

Customer service

Having reliable customer support is something most players never consider until it is needed. A reliable and professional customer service should have a number of ways players can get in touch. The best slot sites UK offer various contact methods, like live chat, and email chat. The live chat function is obviously the best way to communicate with the support team. The response times are usually minutes depending on the platform.

Payment methods available

Before playing slots online, you will need to fund your account. To do this, you need to use the deposit methods offered by the slot sites. We prioritise platforms that offer a wide range of payment methods. The best slot sites should have traditional payment methods like debit/credit cards and bank transfers. E-wallets like PayPal, Skrill, and Neteller are also a must. Sites that expand their payment methods to include the likes of MuchBetter, Apple Pay, ecoPayz, iDebit, and newer payment methods tend to get a boost in our ratings.

Payout speeds

Deposit speeds are usually instantaneous at most online slot sites, however, withdrawals tend to hang for a while. A good slot site settles withdrawal requests as fast as possible. The best slot sites will process your withdrawal requests within 24 hours via e-wallets. Debit and bank transfers will take at most 3 banking days to clear your withdrawals. We consider slot sites that offer payment methods that will settle your withdrawals in a matter of hours. 

How to Play Slots

Online slot games offer simple gameplay that is easy to figure out even for beginners. Whether you're still learning the ropes or you're already a pro, this step-by-step guide should get you playing video slots with ease.

Step 1: Choose a slot game

When it comes to online slots, there are hundreds of variations to choose from. Today, slots come in varying themes including horror, Christmas, fruits, comics, music, history, fantasy, and so on. To add to that, each slot game comes with its own set of bonus features. You might want to choose a slot with more bonus features to help you win. Finally, check the volatility and RTP of the slot. A high RTP above 96% is a good sign for any slot. The volatility depends on your gaming skills. High volatility means big wins happen once in a while. On the other hand, low volatility will get you frequent, but smaller wins. Make your choice and load the game.

Step 2: Play for free

If you want to win real money on online slots, then you would have to bet real money. However, we recommend you learn more about the slot first. If the online slot site offers a free play version, test it out. This way, you get to try out the features of slot games before investing real money.

Step 3: Set a budget

When you're ready to play with real money, it is important to create a budget before you start. Slots are games of chance and could become really expensive if you're not hitting the wins you hoped for. A budget will help you control your spending and make the fun last longer.

Step 4: Check the slot features

Before playing, look for the information area in any slot. This should indicate the paytable, which shows the value of the slot symbols. You will also find the special features of the slot. If there are any bonus rounds or bonus games in the slot, you will find them here.

Step 5: Start playing

To play, set a bet amount, choose your Paylines (if allowed), and click the spin button. The reels of the slots will spin and stop. At the end of the spin, if a symbol combination is aligned, you will trigger a win which will be paid according to the paytable.

Slot game variations

The online slot sector has evolved over the last two decades. From huge slot machines to digitalised slot games that can be operated from a smartphone, the development of online slots has improved in the right direction. Today, there are several types of online slots to choose from. Below, we'll highlight the three major categories you will find at UK slot sites.

Classic slots

Also known as three-reel slots, classic online slots are the first slots to ever grace the internet. These slots were inspired by land-based slot machines. Though these slots feature a retro design that seems outdated, they still remain a popular choice for most players. Today, classic slots feature the same design but come with a modern twist. Software providers now offer these slots with bonus features like free spins and multipliers to keep players entertained.

Video slots

Video slots can be described as the modernised form of online slots. Rather than the bland 1 or 3-reel setting, Video slots feature elaborate 5-reel layouts, with stunning graphics, animations, and designs. These slots draw inspiration from all parts of life including history, horror, ancient Egypt, comics, and music. Among their many exciting features are numerous paylines, special symbols, and diverse bonus features. Some of the most popular titles in this category include Starburst, Book of Dead, Gonzo's Quest, and Money Train.

Progressive jackpot slots

Progressive jackpot slots are actually a type of video slots that offer players a chance to claim huge payouts. With these slots, players stand an opportunity to win huge prizes off relatively small bets. A small portion of each player's bet is added to the jackpot, which continually grows as players bet on it. The jackpot only stops growing when a player triggers it and claims the prize. Progressive jackpot slots can grow into seven-figure and even eight-figure prizes until they're triggered. Over the years, several players have been able to trigger such slots, claiming from hundreds of thousands to millions in prizes. Progressive jackpots known to pay the best prizes include Divine Fortune, Mega Moolah, and Mega Fortune slots.


Big Time Gaming came up with the Megaways concept back in 2016 and most consider it to be the next evolutionary step in online slot games.

Megaways is a random reel modifier that changes the number of symbols that appear on each reel during a single spin.

In short, this means that with every spin a different number of symbols lands on each reel, providing tens of thousands or even hundreds of thousands of ways to win.

Explainer: What are Megaways slots

Big Time Gaming actually licences Megaways to other game developers, which means you can play Megaways slots from providers such as Blueprint Gaming, Red Tiger, Scientific Games and more.

Daily Drop

Daily Drop Jackpot slots were developed by Red Tiger and combine the provider’s chart-topping slots with jackpots that must pay out before a certain time each day. They are hugely popular, with some online slot sites creating dedicated lobbies where you can easily access Daily Drop slots.

Explainer: Daily Drop Jackpot slots

Online Slots RTP

Before you start spinning the reels, we advise you to look at the RTP and volatility of the slot. An RTP tells you how much that slot game pays out over a period of time. Usually, players prefer slots that have higher RTP because they could bring more frequent wins in the long run. 

Simply put, this is a mathematical equation that shows you how much you can win and what goes to the casino. For example, if the RTP is 95%, the house gets 5% of your wager. So after hundreds of spins, £0.95 of each £1 spun will be returned to the player, whereas the casino gets £0.05.

On the other hand, volatility is a risk measure. Simply put, this tells you how risky slot games can be. Those with high volatility have a more extended series of no paying or low paying spins but may culminate with one big win. Low volatility turns the other way - more frequent wins, but the amount is smaller.

The volatility doesn’t influence the RTP of a slot, but they both impact the player's winnings. You should always go according to your bankroll. If you have a smaller amount, a game with high RTP and low volatility can be a suitable choice to keep you playing slot games for a longer time.

New Slot Sites

Today, there are hundreds of online slot sites to choose from. However, there is still enough space in the casino slot sector for many more. New slot sites pop up every month to compete with established brands for the ever-growing customer base. 

New slot sites feature a massive selection of slots. They achieve this by partnering with numerous software providers, bringing multiple themes and categories to slot lovers. Another impressive feature of these sites is the attractive welcome bonus offer. At these sites, you can expect a lucrative welcome bonus with low wagering requirements. These incentives are designed to help new slot sites build their customer base as quickly as possible.

If you're checking out a new casino, always look for a legitimate licence from the UKGC. This proves that their games are fair and genuine. To find the best new slot sites, you can always check below. We update our list with the best new slot sites UK just for you.

PayPal Slot Sites

PayPal is one of the most popular payment providers in the world. At UK slot sites, it is a common way of depositing and withdrawing funds. PayPal is a safe and secure payment option that outperforms traditional payment methods in many ways. With PayPal, players don't have to wait for several banking days to access their funds. UK slot sites that take PayPal will process your withdrawals in a few hours and send you the cash immediately. Another benefit of PayPal is privacy. Traditional payment methods require that you provide your banking details to claim your funds. With PayPal, you don't have to share such sensitive details with every casino you register at.

PayPal UK Slot Sites are becoming more popular due to the speedy withdrawals they offer. If you want to get started with a PayPal casino, you can simply make a choice from the offers on our list

No Wagering Slot Sites

Most online casino slot bonuses come with wagering requirements that must be fulfilled before you can claim your winnings. Luckily, a handful of slot sites allow you to enjoy the bonuses without meeting these requirements. These slot sites with no wagering requirements offer sign-up bonuses that can be claimed, spent, and withdrawn immediately. In most cases, the bonus offered would be free spins rather than cash to play with. While there would be no wagering requirements, you might have to meet other conditions to claim the offer. Some casinos will require a deposit while others will offer the freebies as a no deposit bonus.

If you do get free spins as your bonus, do well to check if they're tied to a particular slot. Some online slot sites allow you to choose your preferred slots without restrictions. Wondering where to find the best no wagering slot sites? Look no further. We've selected the top choices with a lucrative no wagering bonus for slot lovers.

Best Slot Site Bonuses

Most slot sites offer several slot bonuses in a bid to get players to sign up. When checking through the bonuses offered by an online slot site, it is important to compare their offers. Shop around for the best terms and conditions, so you can profit from the bonus offer. At the best online slots sites, you will find the following offers;

  • Free spins: For any slot site, free spins tend to be at the forefront of their bonus offers. Players will be offered several hundreds of free spins on one or more video slots. Free spins usually come as a welcome bonus offer or could be part of the welcome bonus package. Slot casinos usually offer welcome bonus free spins on slots like Starburst and Book of Dead.
  • Deposit Bonus - Match bonuses are standard bonus offers for online casino slots. This bonus requires a deposit which will be matched to a percentage by the casino. For example, a 100% match bonus means that your deposit amount will be doubled. There is usually a limit to how much you can claim in a deposit bonus.
  • No Deposit Bonus - The no deposit bonus is usually a cash offer that will be credited to your account when you meet the requirements. These requirements are simple; register and verify your account. When done, you can claim the no deposit bonus.
  • Cashback Bonus - A cashback bonus is a refund offered on a player's net losses over a specific time period. This basically means a casino will pay back a percentage of your losses over a set period of time. For example, you could be offered a 50% cashback bonus on your losses over a month. Cashback bonuses do not come with wagering requirements, making them a very lucrative offer.

Best Slots Games Providers

Such is the popularity of slots sites, there are now hundreds of slot studios and providers that design, develop and launch the slots that you find in game lobbies. The best slots casinos in the UK normally have at least one of the most famous game providers and often include many to offer an exciting array of quality slot games. Providing quality and differentiation are key decision points as they are fundamental to creating an online casino experience that is identifiable with the casino brand and that customers trust.

To help with this, we've curated a list of the top slot developers of 2022 to help you choose a casino that suits your slot game preferences.


A pioneer in games, NetEnt combines stellar graphics, exciting storylines with unique characters, and winning chances. Some games that you might have heard of include “Gonzo’s Quest”, “Starburst”, “Dead or Alive”, and many more.


Microgaming is widely known for its games with good graphics and slick gameplay. But more importantly, this provider often links bonus rounds to their slots to make the most of your time on the machine. 

If you’ve played in casinos that have this developer, then you must know “Mega Moolah”, “Jurassic Park”, and “Atlantis Rising”.

Pragmatic Play

Aside from regular slots, Pragmatic Play has a long list of video slots, jackpots, progressives, and even 3D slots. This developer always works on providing games that have average to high RTP between 96-97%.

Games that you can find with this provider include “Queenie”, “Might of Ra”, “Gates of Valhalla”, and more.


After 2 decades on the market, Playtech has managed to stand hand in hand with some big names that have been present since the early 90s. Its entertaining games, coupled with great graphics and sound, make it one of the leading game developers. 

The serial “Age of Gods” is the most famous game, while others include “The Dark Knight”, Fire Blaze”, etc.


Yggdrasil offers stellar games with great graphics and fantastic storylines. Aside from the classic slots, there are jackpots and video slots, each with different volatility levels and payout times. 

“Vikings Go Berzerk”, “Frost Queen”, and “Vikings Go To Valhalla” are just some of the names linked to this provider.


Being one of the oldest game providers on the market, Novomatic constantly creates new entertainment mechanics for players. They mainly focus on slots with good graphics and various bonus features.

Games such as “Book of Ra” or “Book of Atlantis” are part of the gaming library of this provider.

Play ’N Go

If you're playing slots from your mobile, then Play ’N Go games are the right choice. The games have stellar graphics and easily adjust to your small screen. “Merlin And The Ice Queen Morgana” and “Secret Of The Dead” are some of the most renowned games from Play ’N Go.


Which is the best slot site?

The best slot site is different for every player. What works for you might not work for other players, however, there are ways to determine a great slot site. Our team of experts make use of a set of criteria when reviewing slot sites. These criteria include slots offers, bonuses, payment methods, customer service, and licences. Based on these criteria, we have created a list of the best online slots sites UK for your gaming needs.

Is it safe to play slots at online casinos?

Yes. As long as you're playing slots at a licensed online casino, you can be certain that you're safe and that your money is properly protected. We only selected slots sites that have a valid licence from the UK Gambling Commission. This means these sites are regulated to ensure player safety and offer slot games that are fair.

How do I play slots online?

Online slots feature simple gameplay that is easy to learn. To play, you will have to make a bet, select the number of paylines you want to play on (if allowed), and hit the spin button. The reels will spin and if you're able to match a symbol combination (three or more), you will trigger a win. You can check the paytable of the slot to learn about the value of each symbol combination.

Will I win more with higher RTP slots?

Yes. The return to player (RTP) percentage represents how much would theoretically be returned to players that play a particular slot. The higher the number, the better your chances of winning more on that particular slot. Most slots have an RTP of at least 96%. If you want to get even luckier, then you should focus on online slot games with RTPs of 98% and over.

Do slot sites offer bonuses?

Yes. We only recommend online slot sites that provide bonuses to players. This includes welcome bonuses for new players and ongoing promotions for existing players. Most slot sites offer online casino bonuses like free spins, deposit match bonuses, no deposit bonuses, and cashback.

How can I be sure slots aren't rigged?

Online slots sites and slot games use random number generators to determine the outcome of every spin. The Gambling Commission requires RNGs to be regularly tested by independent third parties. This means that the best online slots sites and slot games cannot be rigged.

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Stephen Abiola

With over four years worth of gambling and sports betting experience, Stephen Abiola is an exceptional writer who specialises in creating casino and sports betting content. His main areas of expertise include casino articles, reviews, sports betting guides, and anything to do with American Major League sports!

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