6 Best UK slots sites — Ranked by User Experience

Slots are one of the most popular online casino games in Great Britain and around the globe. These games are interesting because they are easy to play and they come with different kinds of in-game bonus features such as free spins and multipliers. 

Today, you will find different types of slots listed in the lobby of most online casinos. This includes classic slots, progressive jackpot slots, branded slots, 5-reel slots, and so on. These slots also have various themes, ranging from Asian themes to Vikings, arcade themes to vampires. Besides that, slots often offer more generous payouts than most other games like blackjack and baccarat. In fact, the progressive jackpot titles are capable of offering players millions of pounds as winnings. That said, before you choose any slot casino, you need to consider several factors. This is because betting sites differ in terms of the quality of services they offer, and you will want to play at the best slot casino. There are also some scam online casino sites looking to prey on players, which you need to avoid.

In this comprehensive article, we will highlight some of the essential factors that make the best slot casinos. In addition, we will provide you with our list of the top 6 slot casinos in the UK, which you should consider joining. These are casinos that we have vetted by testing their services. They also have a solid reputation in the UK market. At the end of the article, we will also answer some common questions about UK online gambling. Read on to discover what you need to be able to play in these casinos: 

  • Be over 18 years old 
  • Proof of address 
  • Account verification 
  • Valid payment method 

Before selecting our 6 top slot casinos, we tested them based on 8 different benchmarks. This way, we are certain that the gambling sites offer the best gaming services and are good players. Here are the 8 benchmarks we used for testing these casinos:

  1. Game Selection 
  2. Bonuses and Promotions
  3. Licence and Security
  4. Customer Support
  5. Payment Options
  6. Payout Speed 
  7. Player Base and Reputation
  8. Mobile Compatibility

First Look: The 6 Best UK slots sites

A first glance at our recommended top 6 UK slot sites shows that these betting operators have a good reputation in the industry. This is because they partner with leading developers to provide players with a massive selection of slots. Besides that, they offer generous bonuses to both new and existing players. These top online casinos also operate with licences from the UK Gambling Commission and other top regulatory bodies. They support a wide range of banking options, making it possible to process deposits and withdrawals swiftly and safely. 

Here are all the top 6 picks and what we liked about each:

  1. Mr Vegas Casino
  2. Barz Casino
  3. 888 Casino
  4. Videoslots Casino
  5. Dream Vegas Casino
  6. Casimba Casino

In-Depth Review of the 6 Best UK Slots Sites

Mr Vegas Casino 

Mr Vegas Casino is a top UK online slot site that was established in 2017. The betting site is owned and operated by Videoslots Limited. It holds a licence from the UK Gambling Commission and Malta Gaming Authority. In addition, the betting site partners with developers like NetEnt, Microgaming and Blueprint Gaming to offer players a huge range of slots. At the casino, you will find popular titles like Starburst, Mega Moolah and Book of Dead. There are also numerous generous bonuses and promotions you can claim and use on video slots. 


  • SSL-encrypted betting platform
  • Mobile-friendly
  • Massive selection of online slots
  • Incredible bonuses and offers
  • Wide range of payment options
  • 24/7 customer support


  • No mobile casino app to use
  • No VIP reward programme 

+18. Terms and conditions found here: https://www.mrvegas.com/terms-and-conditions/

Barz Casino 

Another top slot online casino in the UK that offers players a premium betting experience is Barz Casino. Founded in 2021 by White Hat Gaming Limited, the gambling site is home to some of the best online slot games from top-tier developers like Microgaming and NetEnt. It also has plenty of exciting bonuses including welcome bonuses and VIP rewards. The slot section of this betting platform is subdivided into categories like Megaways, Sticky Wilds and Jackpots. Barz Casino also supports numerous payment methods and offers efficient customer support via live chat and email. 


  • A wide array of online slot games from top developers
  • Exciting bonuses and promotions
  • Easy-to-navigate betting platform
  • 24/7 live chat support
  • Numerous payment options


  • No mobile app to download
  • No telephone support available

+18. Terms and conditions found here: https://www.barz.com/en-gb/terms

888 Casino 

888 Casino is one of the notable slot casinos in the UK and other parts of the world. Owned by 888 Holdings PLC, the casino has been around since 1997 and has an eCOGRA Seal of Approval. It is licensed by multiple top regulatory bodies like the UKGC, MGA and Gibraltar Gambling Commissioner. Besides that, the betting site works with the best developers and features slots ranging from classic games to progressive jackpot titles. It also has numerous mouth watering bonuses for players and processes payouts swiftly. 


  • Excellent proprietary software
  • An extensive list of slots
  • Mobile-friendly betting site and apps
  • Generous bonuses 
  • Fast payouts 
  • Multiple licences
  • Availability of responsible gaming tools


  • Customer support is limited to contact form
  • Customer support response time may be slow

+18. Terms and conditions found here: https://www.888casino.com/promotions/bonus-policy/

Videoslots Casino 

Videoslots Casino is a mobile-friendly slot betting site that entered the iGaming industry in 2011. This online slot site belongs to Videoslots Limited, and it operates with valid licences from the UK Gambling Commission and the Malta Gaming Authority. As the name of this betting site suggests, its primary focus is video slots, and there are thousands available for bettors to play at this casino. These slots are from leading developers, and they come in different types. In addition, the gambling operator offers lucrative bonuses and has a customer service team that assists players via live chat, email and phone. 


  • Licences from both the UKGC and MGA 
  • Fast payouts 
  • High withdrawal limit
  • Great game selection
  • Lucrative bonuses and offers 


  • The operator does not have a mobile casino app
  • Fewer payout options than deposit options

+18. Terms and conditions found here: https://www.videoslots.com/terms-and-conditions/

Dream Vegas Casino 

Dream Vegas Casino is another one of the best online slot casinos where UK players can enjoy a great gaming experience. The betting site is operated by White Hat Gaming Limited, and it started operations back in 2018. It is licensed and regulated by both the UKGC and the MGA, and its platform is encrypted using SSL protocols to secure players' data. Dream Vegas Casino is home to numerous slots from top-tier developers like Push Gaming, Blueprint Gaming, and NetEnt. It also offers exciting bonuses and supports several payment options. 


  • SSL-encrypted betting site
  • Wide range of online slots
  • Great promotions
  • Several deposit and withdrawal options
  • Mobile-friendly and easy-to-navigate platform


  • No mobile app available to download
  • Up to 48 hours pending time

+18. Terms and conditions found here: https://www.dreamvegas.com/en/terms

Casimba Casino 

Casimba Casino is a stylish and modern online casino managed by White Hat Gaming Limited. The betting site was founded in 2017, and since then, it has been offering great services to UK players. It operates with licences from the UKGC and the MGA, and its platform is secured with top-notch technologies like SSL. When you check the operator's lobby, you will find a wide range of online slots from some of the best developers in the industry. Besides that, the slot site also processes payouts quickly and offers great bonuses. 


  • Wide range of online slots
  • Fast payout
  • Top-tier software developers
  • 24/7 live chat support
  • Mobile casino available
  • Great bonuses and offers


  • No telephone support available for players to use
  • No mobile casino app for iOS

+18. Terms and conditions found here: https://www.casimba.com/en-gb/terms

How Online Slots Work

So far, we have reviewed our top 6 slot sites, highlighting their pros and cons. Now, let's explain how online slots work. Slot games are easy to play. To get started, simply load the game and select your bet size. You can do this by adjusting the bet value and number of coins to be played. However, be aware that every online slot has a minimum and maximum amount you can bet per spin. After setting your bet size, proceed by clicking the “Spin” button. This will set the reels in motion. Below is a step-by-step guide to playing slots. 

  • Load your preferred slot on your device 
  • Specify your bet size by setting the bet value 
  • Click the “Spin” button 
  • Enjoy the game 

Some online slots have adjustable paylines, so you may need to select the number of lines to activate.

How to Choose the Best Online Slot to Play

Just as there are several online casinos, there are also numerous slots. Some of these slots are better than others. To choose the best slot games, you need to consider several factors. First is the Return to Player (RTP) percentage. This indicates the theoretical percentage of the total bet that the game might pay out to players over time. Always choose a slot with a high RTP. Next, check the volatility of the game and choose those that suit your risk level. Other factors to consider are the bonus features of the game, hit frequency and the payout values. 

  • The industry RTP standard for a good online slot is 96% and above 
  • Volatility refers to the risk associated with playing a game
  • Read reviews of an online slot to learn its different features before playing it 

Winning Strategies for Online Slots 

Online slots are games of chance. This means that there is little you can do in terms of strategies to influence the outcome of the game. That said, if you choose the right slots and apply some basic betting strategies, you can avoid chasing a losing streak. As we mentioned in the previous paragraph, endeavour to read reviews about an online slot to learn about its features. Also, play the game in demo mode to get familiar with the gameplay. Most of our recommended slot sites offer games in free mode. Here are some betting strategies to apply in slots. 

  • Martingale Slot Betting System
  • The Zig Zag Slot Betting System
  • Straight 60 Slot System
  • Win Goals and Stop Loss Strategy

Note that no betting strategy offers a 100% winning rate. So bet responsibly.

Security and Fairness at Top Slot Sites

Without a doubt, playing at the best slot casinos gives players peace of mind that they are in safe hands. These top betting sites not only have licences from the UKGC, but they also ensure that a high level of fairness is met at all times. They work with independent testing laboratories such as iTech Labs and eCOGRA to vet their games and ensure they are fair to play. In addition, they secure their website with industry-standard technologies and only partner with licensed developers. 

  • The best slot sites work with independent testing labs to audit their games 
  • Some of these casinos provide the testing reports and win rates on their site 
  • Only play at an online betting site that operates with a valid licence

FAQs — UK Slots Sites 

What Is the Best Online Slots Casino in the UK? 

The best online slots casinos for UK players operate with a valid licence from the UKGC and offer a top-notch gaming experience. These betting sites partner with leading games developers, allowing them to have a massive selection of online slots with great themes, features and payout rates. In addition, they offer incredible bonuses that can help boost players' bankrolls and give them a chance to enjoy more playing time. Top slot sites also accept numerous popular and secure payment options, making the deposit and withdrawal process easy for players. 

Is Online Gambling Legal in the UK?

Gambling online is perfectly legal in the UK. However, according to the Gambling Act of 2005, betting sites that want to offer gambling services to players in the UK must obtain a licence from the UK Gambling Commission. The Commission sets the rules and guidelines for these casinos to follow to ensure that they provide players with the best gaming experience. In addition, note that the legal gambling age is 18 years old. To see if a slot site operates with a UKGC licence, check its licensing information section or ask customer support. 

How Long Will It Take to Receive My Winnings?

The processing time for withdrawals at UK online casinos may differ from one operator to the other. All casinos need some pending time to verify wins and ensure any wagering requirements have been met. However, if you play at the best slot sites, payout processing, once that pending time is complete, is usually fast. To withdraw any winnings, it's advisable to use the same banking option as was used for depositing. In most cases, top casinos process withdrawals via e-wallets within 0 to 24 hours. But withdrawals through bank transfer and debit cards may take days to process. 

How Do I Win at an Online Casino?

There are two ways you can win at an online slot casino. First, you can either play games with real money and win based on the game's rules. For example, most slots require players to land at least three identical symbols on a payline to win. The second way to win is by using casino bonuses. However, when you play online slots with bonuses, be aware that the betting operator may have wagering requirements that you must fulfil. It is only after fulfilling these requirements that you will be allowed to cash out the winnings. 

Contact Details:

Editor at SuperLenny: Gemma Heathcote - gemma@superlenny.com

Responsible Gambling

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The information on the site is for entertainment and education purposes. Third parties may change or cancel bonuses / offers and Super Lenny cannot be held responsible for incorrect information. Offers only apply to persons over the age of 18 who are resident in the UK. Please read the terms and conditions of each casino before registering or accepting a bonus. Play responsibly.

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Never wager more than you can afford to lose.

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