The Best Online Slots for UK Players 2023

The best online slot sites and the best online casinos offering slots give players the chance to play classic slot machines on desktop and mobile devices! Free spins are usually awarded as part of a promotion or sign-up bonus package on the best online slot sites, or they can be received by landing specific symbols or combinations during gameplay. This article reviews the best-paying online slots, best UK online slots, slots bonuses and casino bonuses.

Best Online Slots UK

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Mr Q Casino

Expert Rating: 4.9/5

mr q casino logo

Mr Q Casino provides multiple casino games for players in the UK, including table games, card games, live dealer games, and slots, using forward technology and high-quality graphics for the best user experience. Players can enjoy traditional casino games such as blackjack, poker, baccarat and roulette, also the best slots to play online such as Age of Gods, Wild Wild Riches and Hot Slot. It was the obvious choice for the top UK online slot site in our expert's opinion. 


  • Free spins included in Welcome Bonus
  • Win free spins daily
  • Phone and email Support are available 


  • Wagering requirements with bonus money offered


Expert Rating: 4.8/5

leovegas image

LeoVegas is a well-known gambling company providing players with multiple gambling options such as Casino slots, Football betting, Live Casino and Virtual sports, earning its reputation as one of the most recognisable brands in the UK and across the globe. The site has so much to offer its customers, including a wide range of promotions and a state-of-the-art mobile app. Our expert team of researchers loved the mobile app as it offers the same comprehensive range of slots as the desktop site! 


  • Great quality user experience and games.
  • Multiple promotions.
  • App Available 


  • Restricted in some countries

Grosvenor Casino

Expert Rating: 4.8/5

grosevnor casino logo

Providing players with an immersive experience, Grosvenor Casino offers an extensive range of classic casino games and new modern slot games. Being one of the most well-known bookmakers in the UK, Grosvenor is one of the most trusted slot sites. When they sign up, new players can receive a generous welcome bonus and can take full advantage of the existing customer promotions after claiming the welcome bonus. Our experts raved about the Match the Pairs bonus where existing customers can win free prizes!


  • Free Games available 
  • Trusted well-known Gambling site
  • Many promotions available 


  • Excessive registration requirements.

Mr Vegas Casino

Expert Rating: 4.8/5

mr vegas casino logo

Mr Vegas Casino is known for its straightforward interface and cutting-edge features. The prominent casino offers classic slot machines such as Starburst, Gold cash or standard Casino Games such as blackjack and roulette, and promotions, including Daily cash prizes, weekly giveaways, slot bonuses, and jackpots. This fantastic slot site was a favourite amongst our team of experts!


  • Weekly slot tournaments
  • Quick payouts
  • Multiple customer service options


  • Need to be registered to use support
  • Limited promotions

Pokerstars Casino

Expert Rating: 4.7/5

pokerstars image

Although Pokerstars is renowned for its online poker platform, it has expanded to offer over 1000 casino games and slots to enrich the player's experience and be one of the best online slot sites. When trying and testing this site, our experts particularly enjoyed the various gambling features, from over 600 entertaining slots to over 25 classic casino games, with the best slots available being Big Bass Splash and Rich Wilde and the Book of Dead. 


  • Pokerstars Rewards 
  • fast withdrawals
  • Mobile app Available 


  • Only online chat is available 

Duelz Casino 

Expert Rating: 4.7/5

duelz casino logo

Duelz Casino provides one of the best free slots online with a wide range of choices for players to enjoy. The platform is designed to be desktop and mobile-friendly so players can receive bonus slots and play classic and modern titles casino and slot games at home or on the go. Our team of experts were particularly impressed with this site's charming theme and easy-to-use site! 


  • Registration is short and easy
  • Amazing app
  • Excellent bonuses for new customers


  • Limited availability across the world

All British Casino 

Expert Rating: 4.6/5

All British Casino logo

Aiming to provide players with a gaming experience with a British flavour, All British Casino is a popular online gambling platform. This casino targets the UK market and provides a variety of slots, incentives, and a simple user interface. Enjoy an extensive range of casino games, including slots online, table games, live dealer games, and more. Sign up today to enjoy a fantastic welcome bonus, wide range of payment methods and fast withdrawal times. When trying to withdraw winnings, our experts received their money instantly using PayPal! 


  • Phone, live chat, and email provided for customer contact
  • App available
  • Award-winning casino


  • Customer support is not available 24/7
  • Few live tables

The Vic Casino

Expert Rating: 4.6/5

the vic casino logo

Being one of the UK's best-known casino platforms, The Vic Casino is known for its large gaming and reliable services. Players can play the best online slots and recognised casino classics. The platform prioritises player security and fairness, utilising cutting-edge encryption technology to safeguard user information and trusted random number generators to guarantee objective game results. Our experts absolutely loved this site! 


  • vast offers
  • great customer service
  • website reliable and easy to use
  • mobile app available
  • Low minimum stakes


  • Have been known to limit some accounts
  • no VIP program

Videoslots Casino

Expert Rating: 4.6/5

videoslots logo

Run by a formidable powerhouse in the online casino industry, VideoSlots Casino, as you can tell by the name, have created an amazing online slots site for UK players. Its straightforward website design makes playing easy and fun; with hot slots, casinos, tables, bingo, and scratchcards, players can have endless entertainment. The range of slot games, according to our experts, is one of the best in the industry, featuring popular titles like Starburst, Big Bass Bonanza and Wolf Gold. 


  • Simple website design
  • Plenty of promotions
  • Win up to 500 Spins


  • No live chat support
  • No mobile app

Rialto Casino

Expert Rating: 4.6/5

the rialto casino logo

An online casino called Rialto Casino draws inspiration from the famous Grosvenor Casino. The casino has many online slot machines allowing players to embark on exhilarating gaming adventures. This charming casino frequently offers promotional prizes, including welcome packages, free spins, slot bonuses and loyalty awards, to improve the gaming experience. Our expert's favourite feature, however, was its range of online slots from leading providers! 


  • Amazing promotions
  • Straightforward website design
  • Great selection of games 


  • Only provided email for customer support
  • No mobile app

Why Play Slots Online?

The best online slot casino offers numerous advantages that draw players from all over the UK. The growth of technology has drastically altered UK slot sites, and these slot games are now available for online play while relaxing at home. The advantages of playing slots at an online casino are covered in more detail in the section below. 


For all gaming enthusiasts, convenience is an essential benefit. Players avoid the inconvenience of travelling to distant casinos only to enjoy their preferred slots online because it is accessible online.

Game Availability

The top online slot casinos provide a wide selection of games to accommodate all tastes. You can select to play whatever game you like when playing. There is something for every player, from traditional fruit machines to state-of-the-art video slots with intriguing plotlines and captivating visuals.

Rewards And Promotions

Online slot casinos frequently provide appealing bonuses and promotions to attract and reward players. These include welcome bonuses, no-risk spins, reload bonuses, cashback deals, and loyalty schemes.

Higher payouts

Since online casinos have fewer costs due to their cheaper operating expenses, online casinos may return a more significant percentage of bets to players, and This implies that playing online slots increases your chances of winning.

Secure and Fair Gaming

Fairness and player safety are most important at top online slot casinos. They protect your personal and financial information using innovative security methods, including encryption techniques. Furthermore, trustworthy websites guarantee fair play by selecting game results using approved random number generators (RNGs).

Online slot sites may attract players with various games, bonuses, and cutting-edge features. A more engaging and individualised gaming experience is created by providing various features allowing players to choose something that matches their interests. 

Online Slot Variations

Players can play various slot games at the best online casino sites that cater to various interests and provide distinctive experiences. Listed below are a few of the well-liked slot game categories:

Branded Slot Games

Slot machine games are often based on well-known bands, famous movies, popular TV series, or other types of entertainment. Fans may consciously immerse themselves in these games' recognisable themes, illustrations, designs, cast members, and characters. Branded slots mix fun with the opportunity to win great rewards. Slot machine creators and brand owners enter licensing arrangements to produce branded slot machines. The producers get the right to utilise the brand's intellectual property and produce a slot machine that effectively and entertainingly reflects the brand.

Video Slot Games

The most popular online slot machine is the video slot, which has intriguing animations, bright images, and immersive sound effects. Video slots frequently offer extra bonuses, and interactive parts, which enhance the game's complexity and excitement.

Return to Player (RTP) shows the typical sum paid out to players over time when playing video slots frequently included in these machines. The degree of risk and reward in a game is called volatility. Slot machines with high volatility have more significant winnings but occur less often, whereas those with low volatility have lower wins but occur more frequently.

Jackpot Slot Games

Massive, game-changing prizes are available while playing jackpot slots. A progressive jackpot is available in these games, increasing with each wager made by players in various casinos. Each stake contributes little to the prize, which might be pretty significant. Jackpot slots offer more incredible excitement and the possibility of a significant win.

The jackpot builds up by linking different machines or online casinos as a network of connected players contributes to the prize pool. Therefore, a percentage of each bet made on any machine connected to the network is added to the jackpot.

Classic Slot Games

Classic slots are called fruit machines. They usually have three reels and simple rules for playing. The simple fact that classic slots frequently feature the well-known Fruit Symbols, Bar and Lucky Number 7 Symbols, Limited Payline, Coin-Based Betting, Jackpots and Payouts, and Nostalgic is going to appeal to players looking for a straightforward, easy slot experience, which makes them available to gamers of all experience levels. There are often no complicated additional features or complex game mechanics, and the rules are straightforward. Players that enjoy a more laid-back and nostalgic gaming experience will find this simplicity appealing.

Online Slot Software Providers

software providers

It's essential to recognise the role of software providers while discussing the top slot games available at online casinos. These companies focus on developing and providing quality slot games to online casino platforms. These software companies spend a lot of money creating aesthetically attractive visuals, exciting themes, innovative gaming mechanisms, and fun extras.


One of the biggest software suppliers in the industry is NetEnt (Net Entertainment). The aesthetically gorgeous games, intriguing themes, and cutting-edge features NetEnt produces are well-known. They are known for making slot machines that have state-of-the-art graphics, fluid animations, and captivating gameplay mechanisms that will ensure a fun and unforgettable gaming experience for any player that decides to play them. Several popular games are produced by this company, including Starburst Slot, Gonzos Quest, Mega Joker, and Mega Fortune, among many others.


In addition to being a well-known supplier of online gaming methods, Playtech is another well-known name within the industry. Playtech has a wide selection of slot games, from vintage classics to modern video slots with eye-catching visuals and fun extra features. Their games frequently feature well-known themes and franchises, giving players an engaging experience. Goblins Cave, Age of Gods, Buffalo Blitz, Big Bad Wolf, and Ugga Bugga are just a few well-known titles this firm has produced.

Play'n Go 

Play'n GO is a prominent software developer specialising in creating excellent slot games. The company is widely recognised for its remarkable attention to detail, stunning visuals, and seamless gameplay. Its slots are innovative and imaginative, often featuring original themes that give gamers a fun and captivating gaming experience. Some of the most popular online slot games by Play'n GO include Book of Dead, Reactoonz, Moon Princess, Wild Blood, and Cloud Quest. These games have earned Play'n GO a reputation for delivering high-quality video slots that keep players engaged throughout their gaming sessions.


IGT, or International Game Technology, is an established company in the gaming business for game software. They have a long history since 1975 and has made a name for itself as a top producer of cutting-edge and superior gaming solutions.

They are experts in creating lottery systems, video poker and slot machines and are renowned for having fun gameplay, enticing visuals, and a captivating soundtrack. IGT has made several of its games mobile-friendly for players can enjoy their favourite games on mobiles and tablets, offering convenience and flexibility to their gaming experience.


Since its founding in 1980, the well-known Austrian gaming company Novomatic has played an essential part in the gambling market. With a strong emphasis on quality, innovation, and growth, Novomatic continues to expand to be one of the biggest and most reputable suppliers of gaming solutions globally. Slot games from Novomatic, available on their gaming machines and online platforms, have an outstanding reputation. They provide an extensive range of slot machine games with various themes, from vintage fruit machines to state-of-the-art video slots. Slots from Novomatic are renowned for their fun gameplay, appealing aesthetics, and unique features.

Online Slots on Mobile 

A significant advance in the gaming business has been the popularity of mobile online slots. Players now have the convenience and freedom to enjoy their favourite slot games whenever and wherever they choose, thanks to the wide availability of phones and tablets.


  • You can enjoy online slots whenever you choose, from the convenience of your home or while travelling. 
  • As long as you have an internet connection, you may play slots anytime and anywhere you want using a mobile device.
  • A wide variety of slot games are available online than at a real casino.
  • Online slots typically have more significant payoff rates than physical slot machines.


  • Internet connection is necessary to play mobile slots; otherwise, it can affect your gameplay. 
  • Online slot machine games don't have the same social interaction or atmosphere as playing in a real-world casino.

What Makes a Good Online Slot?

As gamers, we often depend on many factors when determining the quality of online slot casinos. These requirements cover the range of games, user experience, security, customer service, and bonuses. We can assess and discover the top online slot sites that provide players with the most significant overall experience by considering these crucial factors. The best online slot machine combines fun gameplay with attractive graphics, fair gameplay, and rewarding features. 

Slot game portfolio 

A compelling portfolio of slot games is crucial for online slot sites because it meets player tastes, gives diversity and engagement, targets various demographics, maintains current players, draws in new ones, and offers several betting alternatives. Online slot sites can create a fun and welcoming gaming atmosphere that appeals to a wide range of players by offering an array and thorough choice of slot games. Due to its direct influence on the player's enjoyment and experience, the slot game portfolio is an essential feature for online slot casinos to provide.

Slot Bonuses

Online slot sites heavily rely on slot bonuses as a crucial tool for attracting new players and retaining existing ones. Slot bonuses offer many benefits, including extending gameplay, increasing winning opportunities, encouraging exploration of new games, and building trust and loyalty with players. These bonuses also provide a competitive advantage for online slot sites. The sites can significantly improve the player experience by providing reasonable and attractive incentives, creating a fun and engaging atmosphere. Also, slot bonuses serve to increase the winning opportunities of players while, at the same time, providing them with additional value.

Range of software providers

Online slot sites should have a variety of software suppliers since this adds diversity, creativity, and quality to the gaming experience. Several software companies have distinctive designs, themes, and features regarding slot games. Also, Online slot sites may give an extensive selection of high-quality games, catering to various player preferences and creating an engaging and entertaining gaming atmosphere by including games from multiple suppliers.

Payment Methods

For online slot sites to provide players convenience, accessibility, and flexibility, various payment options must be available. Players can choose between using credit or debit cards, e-wallets, bank transfers, or prepaid cards, with some preferred credit or debit cards. It also may accommodate diverse player preferences and ensure that players can select the most practical and pleasant option by providing various payment options. Favoured payment methods may generally be used or accepted in a specific location, enabling gamers in many countries with a smooth and legal gaming experience.

How to sign up for online slot sites?

Online slot game registration is a simple step that gives you access to exciting games and possible rewards. Players may sign up for an online slots site and begin in just a few easy steps. Here is a general how-to for completing the registration process:

  1. Pick a trustworthy Online Slots Site
  2. Visit the Registration Page
  3. Give Your Information and consent to the Conditions
  4. Confirm Your Account
  5. Make a Deposit and Select a Welcome Bonus
  6. Play and Discover

Guide to best UK online slots

Online Slots Licensing and Security 

The Gambling Commission is the primary regulatory organization monitoring online gambling in the UK. It ensures licence holders meet strict standards and follows the rules designed to safeguard players. Online slot providers must put in place precautions to stop minors from playing, confirm players' identities, and provide self-exclusion options. They must employ verified and audited Random Number Generators (RNGs) and use cutting-edge encryption techniques to protect data while it is being transmitted. Reputable websites also have rigorous privacy rules to safeguard gamers' personal information and not disclose it to unauthorized third parties.

RTP Percentages 

RTP is an algorithm that calculates a game's average payout over the long term. It is a number that represents the proportion of total bets that the game is anticipated to repay to participants. RTP is important because it informs players of a game's potential payout and profitability. Several components, such as the laws of the game and the mathematical techniques employed, influence the variety. While some games have changeable RTP choices that may be modified by the operator within specific limits, others may have fixed RTPs that stay constant.

Slot Bonuses

Players can get various bonuses as they play slots online, such as welcome bonuses, no deposit bonuses, free spins, reload bonuses, cash back bonuses, loyalty/VIP rewards programmes, and more. Welcome bonuses require a small deposit to be eligible, while no deposit bonuses have wagering requirements. Free spins may have wagering restrictions and be restricted to certain games or periods of time. Reload bonuses contain wagering restrictions and a match percentage, while cash back bonuses return a percentage of the player's losses as extra money. Loyalty/VIP rewards programmes provide a range of advantages, such as special bonuses, tailored deals, quicker withdrawals, attentive customer service, and more.

Frequently Asked Questions (FAQs)

  • What are the best slots to play online in UK?

The best slots to play online in the UK are Starburst, Gonzos Request, Mega Moolah, Book of Dead, Rainbow Riches, Immortal Romance, and Bonanza Megaways.

  • What is the best payout online slot UK?

The best payout slots in the UK are Mega Joker, Goblins Cave, Ugga Bugga, Bloodsuckers and 1429 Uncharted Seas, although results may vary.

  • Which online slots payout the most?

The most popular online uk slots known for higher payouts are Mega Fortune, Mega Moolah Hall of Gods, Divine Fortune, Arabian Nights and Gladiator Jackpot.

  • What is the most trusted online casino UK?

The most trusted UK online casinos are 888 Casino, Betway Casino, LeoVegas Casino, Casumo Casino, PlayOJO Casino, Mansion Casino and William Hill Casino.

  • What are the best progressive jackpot slots?

The best progressive jackpot slots in the UK are Mega Moolah, Mega Fortune, Hall of Gods, Age of the Gods series and Arabian Nights.

  • Where can I find the newest slot games?

To find the newest slot games in the UK, you can explore online casinos like 888 Casino, LeoVegas Casino, and Casumo Casino or game developer sites like NetEnt, Microgaming and Playtech.

  • Can I win real money from online slots?

Yes, playing online slots can result in real money wins. You can earn real cash rewards when you play online slots for real money at trustworthy and authorised online casinos.

  • Can I get slots on mobile?

Yes, you can use a mobile device to play slots. Several online casinos and game producers have modified their platforms and games to be compatible with mobile devices like smartphones and tablets.

  • Can I play online slots for free?

You may play slots online for free, yes. You may enjoy playing slots in “demo” or “free play” mode at many online casinos, which enables you to do so without risking real money.


This article provides a comprehensive overview of the best online uk slots available. This article explains the many online slots available, emphasises their compatibility with mobile devices, reviews the best online slots, looks at the qualities of a quality online slot, and offers advice on finding the finest UK online slots. To get the most out of playing online slots, readers should consider all the facts and make wise decisions to make the most of their experience.

This post originally appeared on Wealth of Geeks.