We picked the UK's best online slots websites based on game selection, sign-up bonuses, high RTPs, and overall user experience.
From brand-new titles to classic slot games and daily drops 'n' wins, there's something for everyone on our list of the best online slots in the UK.
Like you, we love high-octane action when spinning those reels. This is why our experts have been hard at work testing the latest slots sites in the UK to help you decide where to sign up.
We've tested a range of online casinos for their slot games, as well as their bonuses and other casino games. And while MrQ stands out as the best slots site overall, we've got a further 19 for you to take a look at.
Best Online Slots in the UK
All British Casino (Book of Dead): Best mobile slots
Mr Play (Primate King): Best welcome bonus
888 Casino (Cash ‘n Riches): Best variety of slots
PokerStars (Tomb of Ra): Best progressive jackpot slots
Sun Vegas (The Sun Branded Megaways): Most unique slot games
Casushi (Hot Chilli): Best design
Grosvenor (Cash Melon): Most reputable UK slots site
BetUK (Cleopatra): Great high RTP slots
PlayZee (Zee Strike): Best bonus spins promos
1. MrQ (Starburst) ― Best Online Slots in the UK Overall
18+ | Bonus spins on first deposit only | Spins only available for Fishin' Frenzy The Big Catch, valued at 10p per spin | 48hr expiry | All winnings uncapped and credited to account as real money | Note that full T&Cs apply.
Pay by phone payment option
Welcome bonus could be more exciting
You might be confused as to why one of the best UK bingo casinos is also the best slot site for UK players… but don't worry, we'll clear all that up:
Slots and bingo had a baby. That baby is named Slingo and it's awesome.
MrQ is a perfect example of doing a lot with a little. Slots, bingo, and Slingo. Everything else feels superfluous. We enjoy their website's layout and pop art graphics as well.
Selection of Slot Games - 4.9 / 5
With roughly 300 titles, primarily slots, MrQ manages to hit all the right notes. They seem to have cherry-picked the top titles from the top providers, so you'll find all the video slots classics like fan-favourite slot games Big Bass Bonanza and Starburst or the vampiric Immortal Romance. Not to mention their respectable selection of jackpot slots.
However, the real reason we had to include them in our top 5 is their slots game variety, including the selection of over 25 Slingo slots machines.
Our favorite is the Shark Week Slingo game. With medium volatility, a multi-rung prize ladder, and a chance at winning 790 times your stake all wrapped up in a stylish underwater aesthetic, we feel that Shark Week does everything you want in a Slingo title.
MrQ's welcome bonuses (at the time of writing) are not the most generous out there, but there's no reason anyone should turn up their nose at them.
First-time deposits of £10 or more will get 20 bonus spins to use on Fishin' Frenzy The Big Catch. Each spin is worth 10p, but the beauty of it is that MrQ has no wagering requirements. This means you get all winnings from those bonus spins credited to your account provided that you meet all the terms.
MrQ accepts deposits by debit card, Paypal, bank transfer, and Pay by Mobile. All deposit options have a minimum £10 deposit and your withdrawals vary in time from a few hours (Paypal) to 3-5 days (debit cards).
Whether you're looking for a straightforward slots experience, or an exciting dance with a Slingo machine, we recommend signing up to MrQ.
Related: Best online slots UK
2. All British Casino (Book of Dead) ― Best UK Online Slots for Mobile
New players only | Maximum bonus is 100% up to £100 | £20 minimum deposit | No max cash out | 35x wagering | Max bet with an active bonus is £5 | Cashback is cash with no restrictions | Skrill and Neteller deposits excluded | Cashback applies to deposits where no bonus is included | Note that full T&Cs apply.
Casino exclusive to the UK
When it comes to the best slot sites online, any Brit worth their salt knows that the All British Casino ranks near the very top in most categories.
Established almost a decade ago, they have gained a reputation as one of the premier casino sites for reputability, game selection, and top-notch slot tournaments.
Additionally, we love their 10% cash-back offer. If you make a deposit and hit a stroke of bad luck, dropping your account balance down to under £10, they'll give you 10% cash back provided you file within 24hrs of the deposit. This is huge, especially for those of us who like the high-volatility online slot games.
Selection of Slot Games - 4.7 / 5
All British Casino boast a massive collection of games ― over 1,500 in all. The good news is that over 1,300 of those titles are some of the best slot games in the UK. The only real complaint we have about their library is the way they're broken down under the tabs.
At the dead centre of the screen, you see "Slots" but that only brings up 9 titles modeled after your standard real-world slot machines. 3 spaces over you find "Video Slots" which has what you (or at least we) were looking for. But once we got over that hurdle, we were stoked.
Everything looks great, all of the game thumbnails have been edited to match All British Casino's theme ― which does make it a little hard to recognize familiar titles immediately, but it just looks so clean.
Their small selection of jackpot titles, however, does not display how big their current pot is, which we feel is a missed opportunity.
As far as welcome bonuses go, All British Casino is fairly competitive.
A 100% match up to £100 with a 35x playthrough requirement is solid. With so many titles to choose from, it should be easy to make those bonus funds count.
When you consider this welcome bonus alongside their 10% cash back, we are big fans of the All British reward system. You're sure to feel the same.
All British Casino keep up with most UK online casinos when it comes to payment options. They accept payments from debit cards as well as several e-wallet options including Skrill, Neteller, Paysafe, and Trustly.
If you're ready to play All British Casino's slots, use this link to find the best bonuses.
3. Mr Play (Primate King) ― Best Welcome Bonus of any UK Online Slot Site
Applies only to new depositing players. Minimum deposit for 1st deposit bonus: £10. Welcome Package split over 3 deposits. Minimum deposit for 2nd & 3rd deposit bonus: £20. 3 100 spins splits to 20 spins a day for 5 days. Spins credited in eligible casino games. Spins expire after 24 hours. Wagering requirements apply to spins and deposit bonuses. Note that full T&Cs apply.
100 bonus spins + deposit bonus up to £200
Filtering options could be better
Mr Play rounds out our top five with a great welcome bonus spread over your first three deposits.
Wrap that up with a solid slot selection, a ton of table and game shows in their live casino, and their Drops and Wins slots tournament, and they've quickly become one of our favourite UK slot sites.
If you're curious to dive deeper and see what's under Mr Play's moustache (that we have to admit reminds us of Pringles a bit), read on.
Selection of Slot Games - 4.4 / 5
Mr Play sports several hundred of the best slots titles out there. Gonzo's Quest. Immortal Romance. Big Bass Bonanza. It's like a greatest hits album, but for mobile slots. Oh yes, didn't we mention? This slot site runs perfectly on your mobile devices.
We were super excited to find the Game of Thrones online slot buried among their titles. With 243 ways to win across 5 reels, iconic GoT music, and an extra spin system based around the various Westeros houses, resulting in some potentially massive payouts up to 20,250 x your stake.
Mr Play is surprisingly also one of the best online sportsbooks and their live casino is worth scrolling through if you want to take a break from spinning the reels.
You'll find a great, 3-tiered welcome bonus at Mr Play. Your first deposit will see a 100% match deposit bonus up to £50 while your second and third deposits will see a 50% deposit bonus up to £75. These all come with 35x wagering requirements, which is on par with the best slot sites in the UK.
And, because we're all about those slots bonuses, you'd be happy to know you'll get 20 bonus spins a day for 5 days, starting on the day of that deposit:
Day 1 - 20 spins on Starburst
Day 2 - 20 spins on Finn and the Swirly Spin
Day 3 - 20 spins on Book of Dead
Day 4 - 20 spins on VIP Black
Day 5 - 20 spins on Aloha! Cluster Pays
This is a pretty sweet way for Mr Play to sweeten the pot and we like that it includes some of the most popular slots for United Kingdom players.
These bonus spins don't count towards the £6,500,000 prize pool for the Drops and Wins Slots Tournament, however. To get into this monthly tournament, you'll have to wager real money on Pragmatic Play branded slots. We like the Buffalo King slot machine's US Prairie aesthetic for this purpose.
Keeping up with the UK online slot casino industry standards, Mr Play accepts debit cards, bank transfers, and PayPal, as well as a number of other e-wallets for deposit.
If you're ready to play slots online at Mr Play, click here to claim your welcome bonus.
4. 888 Casino (Cash ‘n Riches) ― Best Slots Variety of any UK Slots Site
First-time depositor only | £20 min deposit | Must be claimed within 48hrs | Valid for select games | 30x Wagering | Bonus capped @ £500 | 90-day bonus expiry | Note that full T&Cs apply.
Not as many promotions for regulars
888 Casino's amazing interface makes it easy to get around and find the perfect slot title, whether you're chasing huge jackpot slots or a classic pub-style fruit machine.
Selection of Slot Games - 4.9 / 5
With over 1,000 slots titles, even the most discerning video slots fanatic will feel right at home. 888 has also done a great job with its website navigation, making it easy to find slots by provider, number of paylines, and theme.
Do you like wolf-themed slots? They've got you covered. Aztec themes? Rock and Roll? Hollywood? They have everything from popular mainstays like Book of Dead to the gruesome A Nightmare on Elm Street, a 30-payline jackpot slot with plenty of chances to earn extra spins. UK players will not want to sleep (hah!) on this title.
Outside of slots, 888 has a modest ― but respectable ― selection of roulette, blackjack, poker, and even baccarat and instant-win scratch cards.
888 Casino offers a handsome 100% match deposit bonus on your first deposit up to £100. This deposit comes with a 30x wagering requirement, so you'll have a little work ahead of you before winnings are made available, but with a little bit of luck, you should play through that in short order.
They also offer 88 no deposit bonus spins valid on select games. Please note that full T&Cs apply to all the promos you can claim here.
As with all the best slot sites in the UK, 888 is happy to take your deposits in a variety of ways.
Debit cards, online bank transfers, and a variety of e-wallet options like PayPal, Neteller, Apple Pay… it's well worth checking out, as they offer so many. We're actually very impressed with the selection.
If this all sounds good to you, click here to take advantage of 888 Casino's bonuses and get started.
5. PokerStars (Tomb of Ra) ― Best UK Slot Site for Progressive Jackpot Games
New casino players only | Minimum deposit £10 with code CASINO150 | 7-day expiry | Selected slot titles only | Debit card only | Note that full T&Cs apply.
150 bonus spins for new players
Also one of the best poker sites in the UK
Could add more categories to filter slots titles
Unsurprisingly, PokerStars does poker. Great poker. But did you know they are also one of the most well-rounded slots sites the UK has to offer?
With some of the hottest progressive jackpot titles and tons of bonus spins, playing online slots here will attract any high rollers.
Selection of Slot Games - 4.5 / 5
With hundreds of slots titles on deck, PokerStars has you well-covered ― no matter whether you like fruits-and-sevens classic slot games or you prefer the excitement of high-volatility titles like Buffalo King Megaways with its 6 reels and absurd 200,704 paylines.
But what makes them one of the best online slots sites is PokerStars' progressive jackpot slots collection. With 100 titles to choose from, we had trouble deciding where to begin.
Ultimately, we went with the PokerStars exclusive jackpot title "Tomb of Ra" as we were feeling adventurous. This simple 10-playline slot has a 96% RTP and plenty of chances to score bonus spin. At the time of writing, this jackpot was sitting at a whopping £1.5 million.
Unfortunately, we didn't win this time, but hey― it was nice to dream (and tons of fun!).
Playing slots online is great. Playing slots online with bonus spins is greater still.
PokerStars has one of our favorite welcome packages for bonus spins. While they don't offer any match bonus with your first deposit, the sign-up bonus features 150 extra spins with an initial deposit of £10 or more. This bonus credit can be used on all qualifying games and must be used within 7 days.
PokerStars supports a wide range of payment methods, ranging from debit cards to bank transfers and a whole slew of e-wallets. If you don't already use something supported by PokerStars, it's likely that all of your transactions occur with coloured rocks.
Click here to explore the latest bonuses at PokerStars.
How Did We Choose the Best Slots Sites & Online Slot Games in the UK?
If you're looking to play slots online, it's not enough that the online casino has a lot of titles – some of them might not be worth your time. So, we made sure that every one of our online slot sites had a collection of casino games that are not just beloved by us, but by players like you. They need to feature big-name providers who don't just provide stunning visuals, but fun and rewarding gameplay.
When online casinos compete for our attention, we all win. One of the biggest points of competition has become the welcome bonus. The best online slots sites offer generous bonuses, but we know better than looking at their size. We make sure to analyse the fine print and terms and conditions so we only single out those casinos that offer the best casino bonuses with fair terms.
These days there are nearly as many payment methods as there are casino game types (not quite, but it feels that way sometimes). And while all of them are more or less created equal, it's important to know whether a particular online casino will accept more than just a debit card. We've tried to bring you a collection of the best online casinos not just in terms of casino games or bonuses, but in accepted payment methods.
Top UK Slots Online: FAQs
Is it safe to play online slots in the UK?
So long as you are using reputable online casinos – such as those we listed here, licensed by the UK Gambling Commission – it is absolutely safe to play online slots. It's important to note, however, that you should always gamble responsibly.
What are the best UK online slots to play for real money?
The best online slots for UK players right now are:
Book of Dead (available at All British Casino)
Primate King (available at Mr Play)
Cash ‘n Riches (available at 888 Casino)
Tomb of Ra (available at Pokerstars)
Cash Melon (available at Grosvenor)
Are UK online slots rigged?
Online slots games are not rigged so long as you're playing them at reputable and licensed UK slots casinos like the ones we've selected above.
How can I tell if a UK slots site is fully licensed?
In most cases, you can find an icon at the bottom of the page stating that they are fully licensed by the UK Gambling Commission, in addition to some casinos listing their actual licence number right up front. If you have any doubts at all, you can easily search for this information on your favourite search engine by looking up the casino's name plus "UK Gambling Commission Licence."
Which UK slots app is the best?
MrQ offers the best UK slots app for Android and iOS, while All British Casino has the best-optimised mobile slot site that you can access from your mobile phone browser and play all of its games on the go.
Comparison of the Top 5 UK Slots Sites Online
MrQ: If you love Bingo and slots, you're sure to love Slingo. MrQ made their way to the top not just by having a great selection of regular and jackpot slots titles, but because they have one of the best collections of Slingo games we've found anywhere. Their online casino site is clean and straightforward and their welcome bonus is great.
All British Casino: Whenever we have a run of bad luck and just can't seem to win, we're glad we're playing on All British Casino, thanks to their 10% cash back policy. With a reputation for fair play, over 1,300 slots titles, and a healthy welcome bonus, they make us all proud to be Brits.
Mr Play: Mr Play steals the last place in our top five thanks in part to their solid welcome bonus that blends bonus spins and a percentage of your first 3 deposits getting matched. We also recommend you not sleep on their gigantic monthly slots tournament.
888 Casino: This online casino took our #4 position with its stellar slots selection. With over 1,000 slots titles, a beautiful website, a great welcome bonus, and one of the broadest selection of accepted payment methods we found out there, 888 proved they are not playing around.
PokerStars: When you sit down to play online slots, you rarely imagine yourself navigating over to PokerStars… Cards, maybe. But slots? After today, though, they deserve to be in the top 5 casinos you visit for online slots. With a ton of bonus spins for new players and one of the largest selections of top-tier jackpot slots you'll find, we decided to call it SlotsStars today.
How to Sign Up to a UK Slots Site
Step 1 - Navigate to MrQ Casino using this link and click the "Get my Spins!" button and proceed to fill out your personal details.
Step 2 - Create your account by defining a username and password. Make sure to enter an email you use during this step to help you out if you forget your password as we did. Again.
Step 3 - Fill out your contact information. Addresses including postal code, mobile phone number, and bankroll currency can all be set on this page.
Step 4 - Finally, create your account and then check your email for the confirmation code to finalise the process. Once that's done you'll be able to log in, make your first deposit, and set up your welcome bonus.
Ready to Explore the Best UK Online Slots?
Now you have all the information you need to select your favourite online slot casino in the UK.
As you saw, we went with MrQ for our overall best pick, but we highly recommend checking out the other sites on our list, as each one of them has something special to offer.
Whichever slot site you end up choosing, we hope you have a ball but remember to always play responsibly.
DISCLAIMER: Gambling isn't a venture to engage in if you have financial troubles due to the risks involved. Don't forget the famous catchphrase: the house always wins.
Suppose you're struggling with a gambling addiction or know someone who does, contact the National Gambling helpline today via 0808-8020-133. There are several advisors available to help make gambling safe for both you and your loved ones.
Don't forget that gambling websites are rated 18+ only. More so, you may be unable to access the casino sites listed here, so ensure you check your local laws for online gambling and its legality. We offer reader-supported and independent reviews. While we may earn commissions for recommendations in our website guides, it won't affect our ranking method. We're committed to providing the best gaming experience for all players.
For more free gambling addiction resources, visit these organisations:
https://www.gamcare.org.uk/
https://www.gamstop.co.uk/
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