Best UK Slot Sites 2021

Welcome to The Slot Buzz! Our list of UK slot sites features the very best licensed casinos for October 2021, chosen by our editorial team. At these sites, you can play all your favourite slot games. Whether you are a mad Big Time Gaming fan looking for the latest high variance slot game, or a free spins hunter looking for the latest no deposit slot bonus, there is something for you here.

All the slot sites on this page have been comprehensively reviewed to give you the full picture of what is on offer, including game suppliers, bonus terms, cashier options, withdrawal speed and restrictions, customer support reputation and licensing. These sites featured on The Slot Buzz are casinos that cater specifically to slot players. This is one of the things that makes The Slot Buzz the best resource for online slot sites in the UK.

Hit the Read Review buttons to find out more, or head straight to your chosen casino to start spinning.

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Affiliate Disclosure | All Sites are UK Licensed Licensed Casinos
Casino Planet Logo

100% Match Bonus + 50 Bonus Spins
Exciting Slot Site


NetEnt, Microgaming, Big Time Gaming, Play n Go, Quickspin, Push Gaming, WMS, Yggdrasil, Thunderkick, Pragmatic Play

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players only. 100% bonus on first deposit up to £50 plus 50 Free spins. Free spins are playable on Starburst and will be credited in increments of 10 spins per day for 5 days following first deposit. Min. first deposit £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £500. Wagering requirement of 40x to cash out. Bonus expiry 30 days. Free spins expiry 2 days. Game restrictions apply.

Casino Casino

825 Book of Dead Bonus Spins
Across FOUR deposits


NetEnt, Microgaming, Big Time Gaming, Play n Go, Quickspin, Push Gaming, WMS, Yggdrasil, Thunderkick

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players only. One Welcome Package per player. Max Bonus Bet £5. Get 3 Bonus spins for every £1 deposited up to 165 spins for each of your first 5 deposits. Min. deposit is £20. All spins are on Book of Dead only. Bonus funds must be used within 30 days and bonus spins within 10 days. Spins winnings credited as bonus and capped at amount equivalent to number of spins awarded. Bonus funds separate to Cash funds, and are subject to 35x wagering and withdrawal requirements.

21 Casino Review

121% Up To £300 Bonus
Plus Great Loyalty Rewards


Big Time Gaming, Play n Go, Blueprint Gaming, NetEnt, Quickspin, ELK

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players only. Min deposit £10. Bonus funds are 121% up to £300 and separate to Cash funds. 35x bonus wagering requirements apply. Only bonus funds count towards wagering requirement. £5 max. bet with bonus. Bonus funds must be used within 30 days, otherwise any unused shall be removed. Terms Apply.

Casino Planet Casino

100% Up To £100
Plus 200 Spins on Book of Dead


NetEnt, Microgaming, Big Time Gaming, Thunderkick, Quickspin, Play n Go, Evolution, Yggdrasil, NYX

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 20 Spins on preselected games will be credited instantly + then 20 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms.

Casino Casino

100% Up To £100
+ 10% Cashback In Cash


Novomatic, Big Time Gaming, NetEnt, Microgaming, Blueprint Gaming, ELK Studios, WMS

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New customers only, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction.

Fruit Kings



Microgaming and NetEnt as well as Scientific Gaming and Yggdrasil

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY 18+. New Players only. 100% bonus on first deposit up £50 & 100 Bonus spins (50 spins on day 1, 25 on day 2, 25 on day 3) for Book of Dead slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expire after 48 hours. Game restrictions apply. Further Terms Apply

Casilando Casino

100% Bonus Up To £300
Plus 90 Bonus Spins


Big Time Gaming, Play n Go, Blueprint Gaming, NetEnt, Quickspin, ELK

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players only. Min deposit £20. Bonus spins are valid on Book of Dead only. Bonus funds are 100% up to £300 and separate to Cash funds. 35x bonus wagering requirements apply. Only bonus funds count towards wagering requirement. £5 max. bet with bonus. Bonus funds must be used within 30 days, spins within 10 days, otherwise any unused shall be removed.


£100 Bonus + 100 Free Spins


Microgaming, Big Time Gaming, Play n Go, Quickspin, Push Gaming, WMS, Yggdrasil, Thunderkick, Pragmatic Play

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY 18+ new players only. Min deposit: £20. Max £100 bonus. Max bet with active bonus: £2. Wagering required 100% match bonus: 30x deposit + bonus. Max win from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row. Max Free Spins winnings: £100. Free Spins winnings credited as bonus money with 45x wagering & 3 days expiry. Deposit bonus & Free Spins wins are forfeited 30 days after bonus is credited if the wagering is not met. Game weighting and restrictions apply.

Slotnite casino

100% Up To £250
Plus 100 Free Spins


NetEnt, Microgaming, Big Time Gaming, Play n Go, Quickspin, Push Gaming, WMS, Yggdrasil, Thunderkick

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players only. One offer per player. Min Dep £10. Max bonus bet £5. 1st Dep offer is 100% up to £250 + 100 Bonus spins on Aloha Cluster Pays. Spins expire after 10 days, funds after 30 days. Bonus funds separate to Cash. Wager Req of 35x Deposit + Bonus apply. Terms Apply.

Bgo Casino

Up To 500 Spins On Twin Spin
Deposit £10 To Play Mega Wheel


NetEnt, Playtech, WMS, Quickspin, Endemol, Eyecon, IGT

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New Customers Only, UK only. Min £10 deposit. Win up to 500 Free Spins from Mega Wheel on 1st deposit. 24-hour expiry. Max bet £2.50, max spins win £8 per 10 spins, max Bonus win £150, selected games & 65x wagering on winnings. No Neteller/Skrill. Ts and Cs Apply,

Amber spins

200% up to £20
& 40 Free Spins


Slingo Games, NetEnt, Microgaming, IGT, Blueprint, Thunderkick, NextGen

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY First-time depositors only (18+ country restrictions apply). Min deposit: £10. Max offer: 200% Games Bonus up to £20 & 40 Free Spins (on a game of our choice). Promo code: SPIN40. Any Games Bonus winnings, if applicable, must be wagered 60x before withdrawal. Any Free Spins winnings, if applicable, will be credited as bonus funds and capped at £4. FS are valid for 7 days and any winnings must be wagered 40x before withdrawal. Games Bonus win cap: £100 + original bonus amount. Wagering contribution varies by game. We reserve the right to deny promotional offers based on abusive bonus activity across sites operated by the Company. Deposit balance available for withdrawal at any time (UK only). General withdrawal restrictions & full T&Cs apply. Valid until 31.12.2021

Captain Spins

520 Book of Dead Spins
On Your First 4 Deposits


Big Time Gaming, Play n Go, Microgaming, NetEnt, Blueprint, Leander, Quickspin, Rabcat, Merkur, Thunderkick, Elk Studios, Lightning Box

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players only. One welcome package per player. Max bonus bet £5, Min deposit £20 1st deposit: get 100 bonus spins, 2nd Deposit: get 120 bonus spins, 3rd deposit: get 140 bonus spins, 4th deposit: get 160 bonus spins. All spins are on slot game Book of Dead only. Bonus funds must be used within 30 days and bonus spins within 7 days. Max winnings from bonus spins are equivalent to the number of spins awarded. Spins winnings credited as bonus. Bonus funds separate to Cash funds, and are subject to 35x wagering and withdrawal requirements.

Mr Q Casino

30 Bonus Spins on TED Slot
Bonus Code: TED30


NetEnt, Quickspin, High5 Games, Eyecon, Thunderkick, Microgaming, Blueprint, Skywind

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY First deposit only. Min deposit & spend £10. Max 30 spins on TED at 20p per spin. Spins credited upon spend of £10. Ts and Cs apply.


Wager £10 on slots
Get 100 Free Spins


Evolution, Play ‘N’ Go, MicroGaming, NYX, Yggdrasil and Netent

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY 18+ new customers only. £/€10 stake within 30 days of registration. Spins on Book of Dead. £/€1,000 max win. Full T&Cs apply.

Kassu Slot Site

100% Bonus Up To £300
Plus 300 Bonus Spins on Selected Slots


NetEnt, Microgaming, Big Time Gaming, Thunderkick, Quickspin, Play n Go, Evolution, Yggdrasil, NYX

Significant Terms:

#Ad. 18+ FULL T&C'S APPLY New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on preselected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms -

UK Slot Sites


The editorial staff at TheSlotBuzz have experience as both slot players and operators in the online casino industry.

Our writers have worked in CRM, VIP and customer support teams at top tier online gambling operators in the UK. We have also spent time and money over the years playing slots at many of the numerous online casinos available to players in the UK.

This experience puts us in a great position to provide the right kind of information to help you decide where to play online slots at the best online slot sites in the UK.

We know that the priorities for a seasoned slot player are fast withdrawals without the frustration and anxiety of a 48-hour pending period, slick and friendly customer services where the agents and VIP managers know their jobs, a game suite packed with titles from all your favourite providers, that little edge that favourable playthrough requirements can give, and everything else that goes into making a great casino experience.

That is why our reviews are amongst the most informative and comprehensive you will find anywhere. We ask you to take the time to browse our listings and read more about each site before you pick where to play next.

There are hundreds of online slots sites licensed in the UK and it is our mission to find the best ones for our readers. Our writing team has voted for their top 10 slots sites for 2021 with the results shown below.


  1. Leo Vegas – The best online slots site in the UK today
  2. Casino Lab – A massive array of online slots with reasonable wagering requirements
  3. Skol Casino – The latest addition to the White Hat Gaming Casinos portfolio
  4. Duelz Casino – Stellar reputation across Europe – 100% Welcome Bonus
  5. Griffon Casino – The premier UK slot brand from Aspire global
  6. Lotto Mart – A eye-watering brand that combines the best online slots with lotto games
  7. Casigo – Perfect for Megaways™ fans
  8. Casushi – A crazy Anime themed casino that encompasses Kawaii perfectly
  9. Casino Planet – The best UK casino site for spins promotions
  10. Slotnite – A Fortnite-inspired casino for fans of the game


Those are the top 10 slot casinos as chosen by our experienced team. But what about the slot games? Before we tell you a bit more about how we rate each of the sites we feature, a word about the online slots themselves. There are 1,000s to play, each with different themes, features and payouts, so to help you find the best UK online slots, our editors have also voted this list of their current favourites. If you are new to this side of online gambling then these are a great place to start:

  1. Bonanza by Big Time Gaming
  2. Dead or Alive 2 by NetEnt
  3. Immortal Romance by Microgaming
  4. Fat Rabbit by Big Time Gaming
  5. Book of Shadows by Nolimit City
  6. Pink Elephants by Thunderkick
  7. Book of Dead by Play n Go
  8. 300 Shields by NextGen
  9. Book of Ra by Novomatic
  10. Raging Rhino by WMS

Check our slot site reviews to find out if your next casino offers these games.  These titles are all available to players from the UK and Europe. For Canadian players, we also recommend this guide to Canada online slots.


There is a huge choice for online slot players right now. So many sites and games to choose from. It helps to be informed. That is why at The Slot Buzz we don’t just look at the headline welcome bonuses offered by each casino, we research and present all the key features, including the following:

  • Bonuses and Promotions – New Customer 1st deposit Welcome Bonus Offers, Existing Player Promotions and VIP club.
  • Bonus Terms and Conditions – What are the wagering requirements? is the bonus redeemable? What are the maximum bets and the maximum wins with a bonus? Are any payment methods excluded for deposit bonuses?
  • Games Catalogue – Which casino games supplier works with each slot site and which of their games are on offer?
  • Site Usability and Games on Mobile – Is the site easy to use and how does it look on mobile and tablet? Can you sign up and deposit with ease?
  • Cashier – Which payment options are available for deposit and withdrawal and are there any fees? How much can I deposit and withdraw at one time?
  • Account Verification – What is the process and how long does it take?
  • Progressive Jackpot Wins – What is the procedure to withdraw a jackpot win and how long does it take? Can I withdraw all my winnings in one go from progressive jackpot games?
  • Customer Support – What is the reputation of the slot site for customer services and how accessible are the team through phone and live chat?
  • Security and Licensing – Under which jurisdiction is the site licensed? What kind of protection does this give the customer and what kind of scrutiny does this put its casino games and services under?
  • Awards and Accreditations – Does the site have any awards or has it been accredited by one of the industry’s watchdogs?

These questions form the basis for all our slot site reviews and the answers lead us to award a score out of five for Game Catalogue, Payment Options, Withdrawal Times, Customer Support, Licensing, and Overall Service.

With all this information available in one place, and with our ‘At a Glance’ information boxes, we hope you find our site reviews helpful, informative and easy to use.


If you play slots online regularly, you will understand the many benefits compared to the good old fashioned brick and mortar casino sites. Firstly the simple comfort of wagering at your home, at any time of the day, no dress code, and no expenses such as travel or accommodation. This may seem obvious, but the ease to play at the best slot sites in the UK is often overlooked. Let’s quickly break down some other key advantages of playing online slot games in the United Kingdom.

On The Go Gaming – At The Slot Buzz, we enjoy playing the latest online slots no matter where we may be. Whether that is taking a stroll, chilling on the couch, or even in transit. Thanks to mobile slot sites in the UK, this is all possible. Fully optimised mobile sites and even apps are now the norms in the online slots world. This has ensured slots fanatics never miss a chance at winning big from anywhere with an internet connection or data.

Choice of Slot Sites – The abundance of online slots sites differing in themes, special features, gamification is astounding. With a constant stream of new slot sites being released each year, you can be sure to find something to your fancy within a couple of minutes.

Variety of Slot Games – Imagine the fuss of installing a massive slot machine into a land-based casino. This task is thankfully not necessary for online casinos releasing a new slot game, and in turn, large volumes are added to catalogues monthly from video slot games to progressive jackpot games and more. This provides you with more choice than ever, from popular slot games to funky new releases.

Better RTP – RTP rates are the figures that indicate the return we are expected while wagering on slots. Of course, you can win or lose at any given moment, so they are not literal figures to go by. In the case of slots, the higher, the better with RTPs. Luckily, due to the large volume of online players, the highest RTP rates are within online sites. Take note of high RTP slots reviewed here at The Slot Buzz, every little helps.

Lucrative Slots Bonuses – Bonuses are one of the most significant differences between land-based and brick and mortar slot sites. Whether you desire a 100% welcome bonus or even free spins for promoted games, the choice is yours! Let’s further dive into the many slots bonuses available at the best slot sites in the UK.

Finding the Best Welcome Bonuses

Bonus Terms and Conditions
Bonus Terms and Conditions

The first feature of any slot site to grab your attention will most likely be the welcome bonus package. Making sense of it isn’t always that easy. Here is a quick guide to the most important things to look out for when weighing up each bonus

  1. How Is The Bonus Triggered?

Consider what the necessary actions are to trigger the bonus, and decide if you are comfortable meeting them. Almost every casino will gift a bonus of some sort on the first deposit made, but you should always check the minimum deposit required to trigger the bonus. Usually, this will be £10 or more. Remember, depositing £5 twice will not qualify you. Also, look for the maximum bonus amounts and remember that if you deposit in excess of the maximum amount, your bonus will be capped.

2. What Are The Wagering Requirements?

Always check out the wagering requirements on any bonus or the winnings from any bonus spins. You will usually be required to turn over your bonus or winnings a specified number of times before a withdrawal can be made. And when hitting these wagering requirements be careful that you don’t exceed the maximum bet value – often £5 – or your wagering will not count towards the offer

3. What  Game Restrictions Apply to the Bonus?

Further restrictions to look out for include the games that are available to play with bonus cash. Typically slot machine sites will restrict players to wagering bonus cash on popular, low volatility slots like Starburst. The chances are you won’t be spending your bonus chasing those big wins on your favourite progressive jackpot game! That said, you should always shop around because some bonuses are more flexible than others

4. Is Your Payment Option Valid for the Bonus?

For those who like to deposit using eWallet payment methods, check the terms of the sign up offers to see if your preferred option will make you eligible for the bonus. Typically, Neteller and Skrill are not valid.

5. Does the Bonus Have an Expiry Time?

Finally, if you are not planning to wager all that bonus money on day 1 then we urge you to take heed of the expiry terms of your bonus. A bonus will usually be available to claim from the time of registration for seven days or more – though some slot sites may restrict this to just 48 hours – and the bonus itself will be valid for up to 30 days before it is forefeited. So, don’t forget those bonus funds – they are there to be spent.

You can read more on our slot bonus offers pages.

Slot Sites With The Best Bonus In October 2021​

Slot SiteBonusTermsGet Bonus
Casino Gods100% Welcome Bonus Up To £300

Plus 300 NetEnt Spins

  • Min Deposit £10
  • WR: 40x bonus and free spins wins
  • Max Win: £100 On Free Spins
  • 18+, Full Terms Apply
Temple Nile Casino200% Up To £500

30 Bonus Spins

Fun Casino50% Up To £998

Plus 100 Bonus Spins

Casumo100% Welcome Bonus Up To £300

Plus 30 Wager Free Spins

Casilando100% Welcome Bonus Up To £300

Plus 90 Bonus Spins


As you can probably tell by now, it is worth spending a bit of time browsing through the bonuses on offer here to see which give the best value. In particular, you are looking for promotions where both the trigger to release the bonus – i.e. the deposit – and the wagering requirements needed to release your winnings, are low. Here is a selection of the sites offering just that.

Slots Sites With No Deposit Bonus Offers in October 2021

Slot SiteBonusWinnings Paid InWithdrawal LimitVISIT
32 Red£10 FreeCash£100VISIT
Casumo30 Free SpinsCashNo LimitVISIT
Fun Casino11 SpinsBonus Funds – 50x WR£100VISIT
Casino.com20 SpinsBonus Funds – 20x WR£100VISIT

There are a number of slot sites that offer no deposit bonuses for UK players that are not regulated in the UK. These casinos should not be trusted as they are actively avoiding UKGC regulation. The slot sites that are recommended by The Slot Buzz are all licensed and adhere to the strict policies imposed by the UKGC. We have a complete list of slots sites with no deposit bonuses here at The Slot Buzz.

Slots Sites With Low Wagering Offers in October 2021

Slot SiteBonusWagering RequirementsOther Significant TermsVISIT
Casino.com20 Free Spins on Registration20x WinningsSpins only available on Age of Gods SlotVISIT
mFortune£10 Free – No deposit needed20x WinningsMax Winnings: £200VISIT
Party Casino120 Free Spins on Starburst10x WRMin Deposit: £10VISIT
Jackpot Jones250 Free Spins on NetEnt slot games1x WRMax Winnings: 10x bonus amountVISIT
O’Reels100 Free Spins On Starburst5x WinningsMin Deposit: £20, Max Winnings: £20VISIT

Casino Bonuses, Advertising Standards and Transparency

Advertising Standards Authority
Advertising Standards Authority

The online gambling industry came under close scrutiny in 2017 following some high-profile cases that were also widely reported in the media in which advertisers were seen to be using questionable practices and socially irresponsible content to push gambling offers.

At TheSlotBuzz we aim to make the terms of all the offers listed on our site very clear and transparent and to follow all guidelines on compliance to the letter.

Advertising codes are written by the Committees of Advertising Practice (CAP) and applied by the Advertising Standards Agency (ASA). They include guidelines stating that gambling advertisements should not appeal to those under 18, promote gambling as a means to resolving financial problems, or suggest any link between gambling and sexual success.

Slot Game Software

Micorgaming Slot Software
Microgaming are one of the biggest software companies

For many of us of course, the most important feature of slots sites will be the slot games on offer. There are many different software companies out there, from industry giants like Playtech, Microgaming and NetEnt, to newer studios like Red Tiger Gaming and Thunderkick. Each will have its own graphical styles and game types, with varying volatility, RTPs and maths models.

Not every casino brand is in partnership with every software supplier so before you make a deposit you should look to see which slots you can play at each site. Some brands sign exclusive deals with one supplier – this is common in the case of Playtech and Microgaming. Others will partner-up with multiple suppliers to provide a wide range of games. For our money, the latter are the best sites to play at, offering the widest choice in their game catalogues.

You can see which suppliers are working with each slot site in our listings. To give you an indication of what each game provider is about, let’s take a brief look at the heavy hitters you will find at the best slot sites in the UK.

Big Time Gaming Slots

Big Time Gaming was founded in 2011 and has taken the gambling world by storm ever since. Most notably known for their unique random reel generator mechanism, Megaways which you can find at all the best online slots sites in the UK. Online slots such as Who Wants To Be A Millionaire Megaways and Bonanza Megaways are just some of the hit BTG titles you can expect to play at UK slot sites.

Playtech Slots

Playtech is another giant in the slots world that has been operating for over two decades. They offer an array of classic slots, video slots, live slot games, and progressive jackpot slots. Known for flawless graphics and crisp audio, it’s no wonder such high volumes of slots fans play their online slots daily. This high volume of players allows Playtech to keep RTP rates at an astonishingly high percentage which is music to UK players ears.

Yggdrasil Gaming Slots

Yggdrasil Gaming is a go-to for those who enjoy wagering at mobile slot sites. Unlike other software developers that churn out new games weekly to see a profit, Yggdrasil has ensured its customers receive a spectacle of animations upon each release. Their RTP rates are just within the industry standard, where they shine through is in bonus play in their wide range of games.

Microgaming Slots

Available at all top slot sites, Microgaming software has become a household name in the iGaming world. Think back to all the online slot sites you have played at in the past few years. Chances are that Microgaming was present in force. They produce hit games monthly, amalgamating blockbuster movies and thrilling features into their video slots.

NetEnt Slots

If you are searching for the latest online slots at the best UK slots sites, The Slot Buzz has got you covered with top-class games from providers like the one and only NetEnt. You can expect to play to titles like Starburst and Gonzos Quest. These iconic games provided by the one and only NetEnt are often at the forefront of free spin offers at many of the best slots sites in the United Kingdom. NetEnt also offers countless jackpot slots games, mobile slots, slot tournaments through online slots bonuses for their branded games.

Cashier Options at Slot Sites

There are many different ways to deposit and withdraw into your online casino account. Whilst the debit card options will always be the most popular, there are plenty of other methods to consider, each with its own merits. We recommend looking at eWallet solutions like Paypal which are very popular and allow customers to manage their gambling spend across multiple sites from one wallet safely and securely.

Check our casino payment methods pages for more information about this.

Best Mobile Slots Site

Over the past few years, we have seen a stark increase in the number of slot players who have turned their focus to playing on mobile and tablet devices. The accessibility of technology has allowed UK slot fanatics to never miss a spin on their beloved slot games. Whether that is wagering on the go, from the comfort of their own home, or even in transit. New slot games can be played within seconds of their release as software providers use the latest HTML5 to ensure players get the best experience out of mobile slots.

All of the very best slot sites in the United Kingdom play their part in producing fully optimised mobile slots sites and even dedicated mobile apps for players to enjoy. Gone are the days of travelling far and wide to a brick and mortar casino to play on a slot machine. Now, all devices from Apple, Windows and Android enable casino players to claim their 1st deposit bonus, enjoy a huge range of slot games, and have the chance to win playing online slots.

A Note About Licensing for UK Slot Sites

UK Gambling Commission
The UK Gambling Commission

All the slot sites listed and reviewed at The Slot Buzz are licensed by the UK Gambling Commission. Under the terms of these licenses, casino operators must offer a fair, safe and secure service to their customers, or they risk penalties, including fines, or in extreme cases, having their licenses revoked.

This means that you can feel safe that your data is well protected, your financial transactions are secure, and the gameplay at your casino is fair. It also means that should you have a complaint to raise against an online casino then you have recourse to do so. You can read more about this in our Fair Play gambling guide.

Most operators have businesses based outside the UK in other gambling jurisdictions like Malta, Alderney or Gibraltar, from which they will also have been issued with a separate license. At TheSlotBuzz we have listed information about each jurisdiction, including contact information and complaints procedures, on our licensing pages.

Error Correction at The Slot Buzz

The integrity of the information on our website is important to us. If you take issue with any of the facts presented here then please do contact us. Have fun and please gamble responsibly.


1. Which is the best online slot site?
The best slot sites have a wide variety of games on offer from all the leading slots developers. They give a generous welcome bonus package including free spins on the best slots, and high-value deposit matches with fair terms. The top casinos also support a good range of payment options, including eWallets and pay by mobile services. We rate all the slot sites in our list here. One of the best currently operating in the UK is Leo Vegas Casino.

2. Which slot site has the best odds?
Slots and casino games payout according to the metric of Return To Player (RTP) which shows how much money will be paid back in winnings from all the money wagered. This is a theoretical and average rather than an absolute value and it will change from session to session. It is similar to the odds of winning. A game with a 95% RTP will pay back £95 in every £100 wagered. Casinos sometimes publish the aggregated RTP of all their games each month. To find a casino with the best odds you should look for one which offers lots of games with a high RTP.

3. Which slot site has the biggest payouts?
The payouts of a casino are determined by the games they offer. The highest payouts come from slots that have a big win potential or offer big progressive jackpots. You can always find the payout potential of any game in the information screens that appear after it has loaded. This website reviews games with the biggest payouts, including Lil Devil by Big Time Gaming and Progressive Jackpots like Mega Moolah.

4. Can I win real money playing slots online?
Yes, it is possible to play slot games and win real money at licensed online casinos in the UK. In order to win real, withdrawable cash you will need to deposit using a debit card, or an eWallet service like Paypal. Most slots can be played from 10p up to £100 per spins (sometimes more) and offer payouts into the £1,000s. If you do win you can withdraw the money back onto the card or eWallet system you deposited with.

5. What is the best slot game?
There are thousands of online slots games to play at UK casinos. The very best ones have exciting themes and beautiful graphics mixed with thrilling gameplay and big potential payouts. Everyone has a different opinion on which is the best but the most popular include Starburst by NetEnt, Bonanza by Big Time Gaming, Mega Moolah slot and Immortal Romance by Microgaming. Our site reviews and rates hundreds of games so you can make an informed choice on which to play.

6. Can I play video slots online for free?
It is possible to play slots online for free. However, since May 2019 it is necessary to first register and verify your age at a casino before you can spin the reels. This regulation was introduced by the UK Gambling Commission to prevent under 18s from experiencing slot play before they are legally old enough to gamble with real money. When you register at a gambling site you will be required to enter your name, address, email and date of birth. This will be enough to allow the operator to verify your age.

7. Where can I play a progressive jackpot slot?
Most online casinos will have a suite of progressive jackpot slots to play. Some have small prizes and drop their jackpots weekly or even daily. Others have multi-million GBP prizes that pay out infrequently but set records when they do. One of the best is Microgaming’s Mega Moolah. We recommend playing progressive slots at a Genesis Global casino called Casino Gods.

8. Which slot sites offer free spins with no wagering requirements?
It is now possible to claim free spins offers from casinos where the winnings are paid out in cash which can be withdrawn immediately. That means no wagering requirements. These free spins will usually be available on low variance slots like Starburst. Currently, you can claim up to 50 spins when you make your first deposit at Play OJO casino with no win limit and no wagering requirements (see site for terms).

9. Are online slots fair?
Yes, online slots are fair. All online casinos taking bets from UK-based gamblers must hold a license from the UK Gambling Commission. The developers who create the slots must also be licensed. Under the terms of these licenses, all the games must be audited and tested to ensure that they are fair, safe and secure. The use of Random Number Generator (RNG) technology ensures that the outcome of every spin is totally random and cannot be affected by activity outside the game engine.

10. Can I play slots on mobile?
More than half of all wagering on online slot games is now made on mobile phones. Game developers use HTML5 technology to ensure that their products are optimised for all devices. The games look best on full-screen phones and it is possible to sign up, deposit and play entirely from a hand-held device. There are also now payment services that allow players to deposit through their mobile without the need to use a bank account. Payments are added to the customer’s monthly phone bill or deducted from their pay as you go credit balance.


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