The Best Slots Sites UK – Top Slots to Play Online in 2024

Slots are one of the most popular online casino game types, favoured for their simplicity and diversity in theme. We have carefully handpicked the best online slot sites across the UK for our valued readers to enjoy. 

Our top online slot brands showcase many of the industry’s leading slots alongside huge customer bonuses, top-notch software and an exemplary gaming experience. Keep reading to uncover more about the best slot titles and how to sign up.  

City AM’s journalism is supported by our readers. If you click links to other sites on this page, we will earn a commission. 

Our Recommended Top 10 Slot Sites

bet365 Casino – Stake £10 and Get 100 Free Spins

bet365 Casino – Deposit and stake £10 on eligible Casino games to get 100 Free Spins. Time limits, game restrictions and T&Cs apply. Registration required T&Cs apply.

Pub Casino – 100% up to £100 Welcome Bonus 

Welcome bonus for new players only | Maximum bonus is 100% up to £100 | Min. deposit is £10 | No max cash out | Wagering is 40x bonus | Maximum bet with an active bonus is £5

Eligibility is restricted for suspected abuse |  Skrill & Neteller deposits excluded for welcome bonus | Cashback when offered, applies to deposits where no bonus is included | Cashback is cash with no restrictions |

Jackpot City UK – £100 Bonus and 100 Free Spins

New UK customers only. To qualify, you must stake £20 on a game on our ‘Jackpots’ tab. Spin value – 10p. No wagering requirements on free spin winnings. Debit Card deposit online (exclusions apply). This offer is valid 7 days from the new account being registered. 18+ BeGambleAware.org.  

Monopoly Casino – Spend £10 Get 30 Free Spins

New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. 18+. Free Spins: on MONOPOLY Paradise Mansion. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. ‡ Current Jackpots are across selected games.

talkSPORTBET – £30 in Casino Bonuses & 25 Free Spins

18+ New customers only. Opt in via mobile device and wager £10+, in 7 days. Get 3x £10 in casino bonuses on selected games, with 40x wagering +25 Free Spins on Big Bass Bonanza. Bonuses expire in 30 days. Max Redeemable £750. T&Cs Apply, see below. GambleAware.org | Please Gamble Responsibly.

NetBet – Up To 500 Free Spins

New players, £10+ deposit, no e-wallets/prepaid cards, up to 500 Free Spins, 40x wagering on Free Spins winnings. T&Cs apply

Space Wins – 500 Free Spins on Starburst

New players only, £10 min fund, max bonus conversion to real funds equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply here.

Lights Camera Bingo – 500 Free Spins on Fluffy Favourites

New players only, £10 min fund, max bonus conversion to real funds equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply here.

Immortal Wins – 500 Free Spins on Immortal Romance

18+, New players only, £10 min fund, max bonus conversion to real funds equal to lifetime deposits (up to £250), 65x wagering requirements. FREE SPINS CAN BE WON ON THE FOLLOWING GAME: IMMORTAL ROMANCE. FULL T&CS APPLY HERE.

Bally Casino – Get 30 Free Spins when you play £10

New members only, must opt in. Min £10 deposit & wager (excl. sports betting). 30 day expiry from deposit. 18+. Free Spins: on Secrets of the Phoenix Megaways. Spins value: 20p each. Game availability & restrictions apply. ‡ Current Jackpots are across selected games.

Cash Arcade – 50 Free Spins on Big Bass Bonanza

Cash Arcade – New players only, £10 min fund, max bonus conversion equal to lifetime deposits (up to £250) to real funds, 65x wagering requirements and full T&Cs apply.

Aladdin Slots – 50 Free Spins on Big Bass Bonanza

New players only, £10 min fund, max bonus conversion equal to lifetime deposits (up to £250) to real funds, 65x wagering requirements and full T&Cs apply.

18+ Gambling Can Be Addictive. Please Play Responsibly. Registration Required. GambleAware GamStop Gambling Commission

Our Top Picks for the Best Online Slot Sites for UK Players

If you are looking for a top online slots site, then look no further. Our team has carefully picked our favourite online slots from the UK online casino industry, all equipped with incredible site features. Find out more below. 

With over 20 years of experience within the online casino industry, it is no surprise that bet365 Casino has made it onto our top list of the best UK online slot sites. Our team rates this site extremely highly for its plethora of fantastic customer features.

Firstly, the bet365 Casino site is straightforward to navigate, thanks to the leading software behind the brand. This also ensures that the game selection is top-notch. Users can expect to find exceptional game varieties, such as online slots, progressive jackpots, table games and live casino titles. 

Some of our favourite slot picks at bet365 Casino include Age of the Gods Cash Collect, Book of Horus and Roman Fruits. An improvement that we would have liked from bet365 Casino is speeding up the account verification process, as it can be time-consuming and negatively impact players.                   

Slot fans are in for a treat at Space Wins Casino, as the site provides over 500 game titles, with top slots taking up the majority. Several varieties of slot games can be enjoyed at Space Wins Casino, including modern five-reel slots, three-reel games, video slots and lucrative jackpot slots

In addition, our experts discovered other popular casino game variations at Space Wins, including roulette, blackjack, and live dealer options. Thanks to its interactivity and HD streaming, we particularly favoured the live casino section. 

Players will be pleased to hear that the average RTP for Space Wins is around 97-98%, which our experts have determined based on the games available. Rewards are plentiful at Space Wins, with the brand providing several potential prize opportunities for new and existing players through exciting bonuses. 

The current welcome offer is up to 500 free spins on the Starburst slot, which is an excellent way for players to potentially earn prizes without risking their funds. Overall, we highly recommend Space Wins to online casino users looking for superb slot opportunities. 

Brand new in the online casino scene is the incredible Bally Casino. Despite its establishment only last year, the site has gained great traction amongst casino users thanks to its superb site features. There is no better feeling than being potentially rewarded while enjoying a top online slots site. 

Fortunately, Bally Casino provides several promotions for both new and existing customers to claim. Notably, the current welcome offer for new players is the lucrative play £10 and get 30 free spins bonus. Users can enjoy these free spins on the incredible Secrets of the Phoenix Megaways slot. 

While Bally Casino’s slot selection is more than satisfactory, the tabletop games lacked diversity, with blackjack, baccarat, and roulette the only options. Aside from this, users who prefer to play on the go are in luck, as Bally Casino UK provides an exceptional mobile experience on iOS and Android devices. Players can choose between a well-functioning mobile site and a dedicated app.    

As slot enthusiasts enter the Monopoly Casino site, they are greeted with an easy-to-navigate interface with vibrant colours that create a pleasant gaming atmosphere. A standout feature to our experts about the Monopoly Casino site is certainly the incredible games library bursting with varieties such as top slots, table games and live dealer titles.

Players will find popular and niche slots from industry-lead software developers, ensuring high-quality graphics and fast loading speeds. Our top slot picks at Monopoly Casino include Monopoly on the Money Deluxe, Bouncy Bubbles and Monopoly Gameshow Jackpots. 

Our team noticed a downside of the site: the lack of variety in payment methods. We would like to see additional banking options to ensure all player payment preferences are satisfied. Create your account with Monopoly Casino today to enjoy the brand’s incredible features and the huge welcome offer for new customers.

Last but certainly not least, Aladdin Slots is another strong contender within the online slots site scene, jam-packed with exciting features like a vast slot selection, generous customer promotions and top software. 

Regarding promotions, new players who create an account with Aladdin Slots can claim 50 free spins on Big Bass Bonanza! Existing customers do not have to miss out, thanks to the variety of ongoing bonuses at Aladdin Slots. These include the rewards reel, cash giveaways and regular happy hours.

We were thoroughly impressed with the safety and security features at Aladdin Slots, including valid licensing and certification from the reliable UK Gambling Commission. Additionally, players can rely on the site’s excellent, responsible gambling features, such as deposit limits and self-exclusion. 

While Aladdin Slots comes with several exciting site aspects, our experts discovered some negatives, including a lack of customer support contact options and the exclusion of cryptocurrency payment options.                    

What Goes Into Choosing the Best Online Slot Sites?

With so many incredible online casinos flaunting top slot games, finding the right site for you can be challenging. Fortunately, our expert team has carefully handpicked the best online slot sites for our valued readers to enjoy. We use strict criteria to ensure all top slot sites have exemplary gaming experiences.  

🎁 Lucrative Welcome Offer

One key aspect of a successful online slot site is the range of promotions available to new and existing customers. Fortunately, all of our recommended top online slot sites are not shy about providing potential reward opportunities for users. The most common and desired online slot site bonus type is certainly the welcome offer, primarily for new players who create an account with a casino. 

Claiming welcome bonuses is simple, often requiring a bonus code or minimum deposit. Our best online slot sites above provide superb new player bonuses to kick-start your online casino gaming experience.          

🎰 Vast Games Library

Being the best UK online slot sites, it is no surprise that all have immense game libraries bursting with leading slot titles for players to enjoy. Players can expect to find different slot variations at the best slot sites, including 3-reel and 5-reel slots, video slots, and progressive jackpots. Slot games are favoured at the top sites thanks to their simplicity and diversity in theme. 

In addition to slot games, the best online slot casinos will provide a range of additional casino game varieties, such as blackjack, baccarat, roulette, and live dealer games. Our team particularly favoured live casino titles as they provide an interactive feel with HD live streaming and well-functioning live chat with real dealers. 

🔐 Safety & Security

A site’s safety and security features determine whether our experts do or do not recommend an online slot site to our valued readers. Fortunately, our recommendations include adequate security measures to ensure all players enjoy a safe and enjoyable online slot experience. Some safety features that we recommend players look out for at their next online slot casino include the licensing and certification at a site. 

These may include big names like the UK Gambling Commission and Malta Gaming Authority, which prove that a site has met all the requirements for validity. In addition, players should look for SSL encryption technology that protects their personal and financial information. 

💷 Payment Options

To guarantee a smooth online slot gaming experience, the leading sites must offer high-quality and well-functioning online banking options. Slot enthusiasts are in luck, as our recommended casino brands offer fantastic payment methods for reliable deposits and withdrawals. Some popular options include PayPal, Apple Pay, Visa, Mastercard, Skrill, and Maestro. 

Our team have tried and tested all top options, noting fast transaction speeds and simple processes. Users will be pleased to hear that the best online slot payment options are all compatible with iOS and Android devices, allowing players to complete secure payments from their mobile.     

📱 Mobile Play

As many casino users may be aware by now, mobile gaming is extremely popular within the online gambling industry thanks to its convenience and accessibility. Players are able to access their favourite slot titles on the go via Android and iOS devices. Fortunately, our top online slot casino recommendations are entirely mobile-compatible. Thanks to leading software developers behind all slot sites, all sites are adapted to smaller screens, ensuring high-quality graphics and fast loading speeds for an exemplary online slot experience.     

📞 Customer Support

While it is unlikely that casino users will encounter site queries at the top online slot casinos, adequate customer support services are essential to aid with any queries players may have. Some well-functioning customer support contact options that players will find at the best online slot sites include telephone, 24/7 live chat, email and sometimes social media. 

We felt that all the best site customer support options provided fast response times and were staffed by friendly team members. Create your account with one of the best slot sites today to enjoy these incredible features.      

Why Play Slot Games Online?

With so many incredible online casino game varieties to choose from when visiting the best sites, players may be wondering why they should choose slots. Firstly, slots are one of the most popular online casino or bingo game types due to their simplicity, ensuring all players can enjoy the excitement of the top slot titles. There are also benefits to partaking in the best slot titles at the top slot casinos, including the lucrative bonus offers that come with them. 

Some bonus types include welcome offers, no deposit promotions and free spins. Free spins are particularly beneficial as they can be used on specified slots to spin the reels, meaning users do not have to risk their funds. Another significant aspect of online slot games is the large variety of themes that they offer, be it seasonal slots, movie-themed slots or simple games. There is a slot game suited to all players at the best online slot casinos recommended in this article. 

Another point to consider regarding the best online slot games is that the RTP is generally higher than land-based ones. This is attractive to players as it can potentially translate to better value when playing. 

How to Create An Account with a Best Online Slots Site

Our readers will be pleased to hear that signing up for the best online slots casino sites could not be easier. To be eligible for an account, users must be 18+ and adhere to all requirements. Follow the steps below to get started.

1. To begin, choose one of the top online slot casinos from our expert list within this article and select the corresponding link.
2. Once on your chosen site’s homepage, select ‘Sign Up’ or the equivalent to begin registration.  
3. You must enter all the required information on the form, including your full name, log in details, and email address. 
4. Next, to verify your online slot casino site, select the link from the brand to your email inbox.
5. To redeem an online slot site welcome bonus, follow all relevant instructions, including entering a promo code and completing a minimum deposit if required. 
6. Once all the above steps have been completed, players will be credited the lucrative welcome bonus and can enjoy their chosen online slot site.      

Online Slot Game Variations

As a prevalent online casino game type, players can expect several types of the best online slot games at the leading online slot casino sites. Our team has provided further details on each slot variation below. 

• Classic Slots – All of the leading online casino sites will flaunt a variety of classic slot games, which are often inspired by the classic physical slot machines that we all know and love. Classic slots are usually played over a 3×3 grid, and the aim of classic slots is to land winning symbols to succeed. Players can expect a plethora of exciting themes behind classic slots.  
• Video Slots – Another variant of online slot games is video slots. Video slots are any slot played on a screen-based device, be it a mobile phone or tablet, and as the name suggests, video slots utilise video animations. Video slots also often feature special features such as free spins, symbols and bonus rounds.   
• Progressive Jackpots – As the name suggests, a progressive jackpot slot is a type of game with a main prize pot that will keep increasing until a lucky player wins it. Therefore, if no one unlocks the jackpot, it can become a lucrative prize pot. The leading online slot sites will come with many progressive jackpot slots, allowing players to potentially earn a huge prize.    
• Megaways Slots – An exciting and innovative slot game variety that we recommend players try at the top online slot sites is Megaways slot titles. These are slot games that come with an inventive reel mechanic that offers thousands of ways to win. All spins in Megaways slots are unique, and the pay lines will change during each gaming round for a dynamic experience.   

Our Favourite Online Slot Games

After extensive research and trying out various online slot titles, we have handpicked our favourite online slot games from the best online slot casino sites for our readers to try. Find out more below. 

Big Bass Bonanza

Big Bass Bonanza is a leading online slot known for its fun fishing theme and engaging gameplay. Key features of this top slot game include free spins with a unique fisherman wild that collects cash prizes from fish symbols and the potential for multipliers that increase payouts. Its simple mechanics, vibrant graphics, and rewarding bonus rounds make it a top choice among slot enthusiasts.

Starburst

Starburst is a widely loved online slot game among experts and players. The title is favoured for its vivid, space-inspired visuals and seamless gameplay. Key highlights of the Starburst slot include expanding wilds that activate re-spins and boost chances of winning. The game’s straightforward 5-reel, 10-payline format attracts beginners and experienced players. Its dynamic gameplay and frequent payouts have solidified Starburst on the list of our top picks.

Gates of Olympus

Another one of our top slot picks from the best online slot sites is Gates of Olympus. The game offers a captivating ancient Greek theme, high volatility, and exciting gameplay. Special features include the “Tumble” mechanic, which allows continuous wins on a single spin, and multipliers that boost payouts up to 500x. Its free spins feature, combined with random multipliers, ensures engaging and rewarding play, making it highly popular.

Sweet Bonanza

Do you have a sweet tooth alongside a love for classic and exciting slots? If so, the Sweet Bonanza slot is the title for you. This title ranks highly on our list due to its vibrant candy-themed visuals and innovative gameplay. Featuring a 6-reel format and the unique “Tumble” feature, winning symbols are replaced, leading to multiple consecutive wins. The highlight is its Free Spins round, offering multipliers of up to 100x, providing thrilling opportunities for UK players.

Online Slots Sites Software Developers

Pragmatic Play

Pragmatic Play is an award-winning online casino software provider well known for powering leading slot casinos like Space Wins and bet365 Casino. Its software features an expanding game portfolio and high-quality game graphics.  

NetEnt

Players who enjoy top slot titles like Starburst, Mega Fortune, and Aloha benefit from the incredible NetEnt software. Founded in 1996, NetEnt has several decades of experience providing leading games and supporting top online slot casinos. Users can enjoy incredible slot games with constant innovation.

Microgaming

At the forefront of the online casino industry, Microgaming specialises in top slots, classic table games and scratch cards. The provider has over 1500 titles under its belt, including games like Mega Moolah and Game of Thrones. Some leading Microgaming slot sites include Lights Camera Bingo and Immortal Wins.   

Playtech

Another innovative name within the online casino industry is Playtech, which is well-known for its selection of high-quality online slot games. Factors that set Playtech software apart include its impressive selection of progressive jackpot slots and its long list of awards, including the Best Software Supplier of the Year. Notable Playtech online casino sites include Monopoly Casino and Aladdin Slots.  

Features and Mechanics of Online Slots

While slot games offer simple gameplay, they come with several mechanics and features that can vary players’ gaming experiences. Our experts provide further details on each feature below.  

• RTP – The RTP, also known as the return to player rate, is a percentage that displays the average expected payout of the slot game over a period of time. When choosing a slot game, we recommend that players look for slots with an RTP of 96% or above to increase their chances of a potentially more significant payout over time. Top slots will come with a high RTP percentage.  
• Symbols – Found during gameplay, slot symbols are present in all games and vary visually depending on the game’s theme. Symbols are icons that will appear on the slot grid and can determine whether players lose or win the slot, as well as triggering bonus features. Some examples of slot symbols include wilds and scatters. 
• Paylines – Another slot mechanic that players should be aware of is paylines. A payline on slot grid is a line that runs across the grid, covering one position on each real. Players must match enough symbols on a payline to succeed in a slot. This is the most common combination. However, it can differ between slots.  
• Volatility – A pivotal term to be aware of when playing slots is volatility. This refers to how large the slot payouts are and how often that slot pays out to players. There are three different types of volatility: low, medium and high. For example, a low volatility slot will potentially provide frequent wins, but the payouts will be small. However, in a high volatility slot, the wins may be sparse, but the winnings are significant. 

An Interview with Our Online Slot Experts

We asked our team of experts for their top tips for enjoying slot games at the best online slot casinos, and they provided valuable insights on how to enhance your gaming experience. Keep reading to find out more. 

“One of the first tips we recommend to novice and experienced slot users is to manage their bankrolls effectively. Without doing so, they may be at risk of losing money and having a shortened gaming experience. To manage your bankroll, we recommend setting your limits on how much you risk and never playing with more than you can afford to lose. The best online slot sites we recommend come with several responsible gambling tools, including deposit limits and time-outs, to help further. 

Another simple recommendation is to only partake in reliable online slot sites. Whilst seemingly obvious, many players forget to simply check that a site has valid licensing and certification and SSL data encryption. This will provide players with the ease of mind they need to enjoy the best slot titles. Regarding enhancing your online slot experience, we feel it is important to only play slots with a high RTP, higher than 96%. This ensures our readers have the best chance of a high return over time. Utilise our top tips for an exemplary online slot site experience.”  

Online Slots On Mobile

Mobile compatibility at the best online slot sites is crucial, as more and more players prefer playing on the go from their mobile devices. Our readers will be pleased to hear that all of the top UK online slot sites recommended above are fully optimised for mobile use and can be accessed on multiple devices, be they mobile, desktop, or tablet. 

Players can choose between mobile-compatible sites accessible through their mobile web browser on iOS and Android or download a dedicated online slot casino app via the App Store or Google Play. Mobile slots are preferred thanks to their accessibility and convenience, and fortunately, the leading software behind the best slot sites ensures that all top slot games are adapted to smaller screens. 

What’s New This Week in Online Slots?

It is an exciting week in the online casino industry surrounding slot games. Users can look forward to fresh releases from industry-leading developers to add a breath of fresh air to their gaming experience. Starting strong, NetEnt recently launched the game Space Stacks, an exciting slot featuring futuristic visuals and innovative mechanics, including a Bonus Wheel feature. 

The prestigious Pragmatic Play has also introduced the Rocket Blast Megaways slot, with up to 117,649 ways to win. Players will find these exciting new releases at the best UK online slot sites, alongside favoured classics like Starburst, Mega Moolah and Gonzos Quest. Create your account today with one of the top sites to enjoy the fresh new releases this week.     

You can also find some more casino bonuses by clicking here. 

Responsible Gambling

As with all online casino sites, players must practise responsible gambling when enjoying games at the best UK online slot sites. The best online slot sites will come with several well-functioning, responsible gambling tools to aid users in times of need or if they feel that they have a problem with gambling. These tools include deposit limits, self-exclusion and time-outs. If players wish to seek further professional advice, then we have provided some fantastic responsible gambling resources below: 

Frequently Asked Questions (FAQs)

What are Online Slots?

Online slot games are a type of casino game variety where users spin the reels on the slot and must match certain symbols to win. Slots are favoured for their simplicity and extensive range in theme. 

Which is the Best Slots Casino?

All of our expert-recommended online slot sites in this article are the best platforms in the UK online casino industry. They have been rated highly for their superb site features, including bonuses, slot game variety and top-notch software. Thanks to its lucrative welcome bonus, Our top online slot site is bet365 Casino.  

Is it Safe to Play Slots at the Top Sites?

Our readers can rest assured that enjoying top slots at the best online slot casinos is highly safe. Our recommended sites come with valid licensing and certification from reliable authorities and SSL encryption technology to protect players’ personal and financial information. 

Can I Win Real Money From Online Slots?

Players can win real money from slots at the best online slot sites. Users must spin the reels and land symbols in the correct order to win. 

Are Online Slot Sites Available on Mobile?

Players who prefer the convenience of playing on the go via their iOS or Android devices are in luck. The best online slot casinos are fully mobile-compatible, providing a fantastic mobile site, dedicated app, or both!      

City AM is committed to responsible gambling. Please gamble responsibly and only bet what you can afford. To gain help, support and advice for a person struggling with gambling, contact the National Gambling Helpline on 0808 8020 133. If you are worried about your gambling or that of a friend visit gambleaware.org.