The best online slot sites UK

From land-based machines to online games, slots have been many casino enthusiasts' favourite options. Due to their popularity, most online casinos in the UK provide a vast collection and variety of slots. Here are some of the top online casinos offering the best slots in their gaming libraries. By Lucy Wynne, Senior Casino Editor

Age of the Gods
Age of the Gods

Playtech

Buffalo Blitz
Buffalo Blitz

Playtech

Cat Wilde and the Pyramids of Dead
Cat Wilde and the Pyramids of Dead

Play'n GO

Diamond Doggies
Diamond Doggies

Red Tiger

Gerard's Gambit
Gerard's Gambit

Play'n GO

Gonzo's Quest
Gonzo's Quest

NetEnt

Great Blue
Great Blue

Playtech

Mythology Games
Age of the Gods
Age of the Gods

Playtech

Cat Wilde and the Pyramids of Dead
Cat Wilde and the Pyramids of Dead

Play'n GO

The best casinos to play slots

  • Videoslots
    Videoslots Review
    4.8/5
    • 100% up to £25
    • + 50 Chances to become a millionaire
    VISIT SITE
    • Huge gaming library with over 8500 games
    • Gigantic live casino with 680+ titles
    • Interesting extra features such as the jackpots list
  • Mr Vegas
    Mr Vegas Review
    4.8/5
    • Deposit £10
    • Get 100% up to £200
    VISIT SITE
    • Over 7100 game titles
    • Attractive welcome bonus
    • 24/7 customer support channels
  • Mega Riches
    Mega Riches Review
    4.8/5
    • Deposit £10
    • Get up to £200 + 50 FS
    VISIT SITE
    • Massive library with almost 6000 games
    • Extensive list of payment methods
    • Can filter by providers game mechanisms and payout
  • Lottomart
    Lottomart Review
    4.1/5
    • 100% Up to £200
    • + Stake 20 & Get 100 FS
    VISIT SITE
    • Over 3200 games
    • Three welcome bonus options
    • Provides lottery scratchcards and instant play
  • Betrino
    Betrino Review
    4.5/5
    • Deposit £20
    • Get 200% up to £50
    VISIT SITE
    • Over 2550 games available
    • Multiple regular bonuses
    • A 200% welcome bonus
  • BetVictor
    BetVictor Review
    4.8/5
    • Deposit £10
    • Get £30 + 30 FS
    VISIT SITE
    • Over 4000 games
    • No wagering free spins
    • Extensive responsible gambling efforts
  • Bally Casino
    Bally Casino Review
    4.7/5
    • Despoit £10
    • Get 30 FS no wagering
    VISIT SITE
    • High-rated mobile apps for Android/iOS
    • Several ‘My Reward$!’ loyalty bonuses
    • Wager-free sign-up free spins
  • Casimba
    Casimba Review
    4.7/5
    • Deposit £20
    • Get 100% up to £200 + 50 FS
    VISIT SITE
    • Over 2800 games
    • Double welcome bonus of bonus cash plus free spins
    • Daily promotions
  • Double Bubble Bingo
    Double Bubble Bingo Review
    4.7/5
    • Deposit £10
    • Get 50 bingo tickets or 50 FS
    VISIT SITE
    • The reward points offers a fun and fair way to award cashback to players
    • Offers bingo and Slingo titles as well as traditional casino games
    • Runs free-to-play tournaments
  • NetBet
    NetBet Review
    4.7/5
    • Deposit £10
    • Get up to 500 FS
    VISIT SITE
    • Multiple bonuses and promotions
    • Over 3900 casino games
    • User-friendly site

How to choose an online slot site

Slots are very popular among casino players, which is why so many great online casinos provide a collection of top-quality slots. If you’re having difficulty choosing one go-to site, follow the criteria below to find the best option for you.

Bonus offers

Most online casinos offering slots provide welcome bonuses and ongoing promotions for their players. As they can be competitive, we recommend you compare the bonuses to ensure they complement your play style. Additionally, look out for offers that have ‘no wagering’, as that means you get to keep 100% of your free spins winnings.


Deposits and withdrawals

Check how the casino processes payments, whether or not there are fees attached to your transactions and how long withdrawals will take.


Payment methods

See what you can use to fund your account and withdraw your winnings. Make sure they have one of the methods available that you like to use, to avoid any inconveniences.


User experience

Try navigating the site and/or app to see if you have trouble loading the pages. You can also check how easily you can browse the game collection and whether it runs well on your device.


Customer service

Check the support channels' availability and test them firsthand to see how quickly they respond to your queries. Additionally, a 24/7 human-functioned live chat is always the best customer service widget to have on-site, to sort out issues promptly; so always look out for this.


Games selection

Browse the casino’s gaming library to ensure it’s up to date and has enough variety. You may also check the gaming provider list if you have specific preferences.


Mobile and desktop compatibility

Most online casinos are optimised across devices. For better accessibility, try accessing the site on multiple devices to know how they work on your mobile, desktop, or tablet.


VIP programmes and loyalty rewards

See how the casino operator rewards, or doesn’t reward, loyal customers. Some VIP programmes can also be invitation-only.


Security and fairness

Established online casinos will protect their players transparently, mainly with a licence of the region they’re operating in. You might also spot the operator’s fairness certificate for the games they feature. Furthermore, any integrity or game testing partnerships are always a good sign that you’re playing at a safe and fair online casino.


Responsible gambling features

Licensed online casinos provide responsible gambling tools that give users more control over how they use their casino accounts, which shows that they care about their players.


Pros & cons

Once you have assessed all of the above criteria, consider the casino’s strengths and weaknesses to see if it’s the right casino you can use for a long time.



The best slot sites, reviewed

Videoslots
Videoslots Casino Review UK
4.8/5

If you’re looking for one of the biggest slot selections in the UK, this is your place. With over 9,100 slots available, you will never be short for choice at Video Slots!

This casino was launched in 2011 and has built up its collection over the past decade, to amass a gigantic slots library filled with hundreds of the industry’s top providers.

Here you will find jackpots aplenty, with over 860 available at your finger tips and this casino also has a dedicated jackpots bar signalling the current highest jackpots with their values attached. Within the jackpots bar you will find a variety of the notorious Mega Moolah jackpot slots, as well as Playtech’s Jackpot Giant and Pragmatic Play’s Wolf Gold Power Jackpot being among the highest jackpots on the site.

For those Megaways fans, you won’t be short of options either. There are 340+ Megaways titles here, including popular titles such as Bison Rising Megaways and Big Bass Bonanza Megaways. Furthermore, for those who like the Jackpot King and Megaways combo, you’re in luck, as titles such as Fishin’ Frenzy Megaways Jackpot King and Eye of Horus Megaways Jackpot King are available.

With regards to navigation, there are plenty of filters that help you to find your favourite features, as well as your favourite games; so if it’s sticky wilds you’re after, multipliers or a particular provider you’re looking for, it’s incredibly simple to find.

Read our full Videoslots Casino Review UK

Mr Vegas
Mr Vegas Casino Review UK
4.8/5

At this devilishly-tempting City of Sin-themed casino, you will find an outstanding 8,300+ slot titles from over 195 providers in the industry. Mr Vegas was launched in 2020 and is owned by VideoSlots Ltd, hence why it has so many slots available - they are operated by good stock!

Due to them being owned by VideoSlots, you will come across many similar titles, as well as their established progressive jackpot list; showing you the jackpots topping up every second until it’s triggered.

Mr Vegas is one of our highest-rated casinos overall, as well as for slots, thanks to its multiple payment options, vast games selection, menu filters, mass amount of providers on-site and quick withdrawals taking up to 48 hours.

Here, you will find both Megaways, jackpot and Jackpot King (JPK) titles, as well as combination titles of JPK and Megaways, with renowned slots such as Mighty Griffin Megaways Jackpot King being available on-site, as well as new titles being added regularly.

As well as your filter, refining games by features, you can also access other tabs that refine by new, hot, featured or popular to help guide you on the way to finding your new favourite slot game.

Read our full Mr Vegas Casino Review UK

Mega Riches
Mega Riches Review UK
4.8/5

With its high RTP of 96.78% and over 5,800 slots to be played, Mega Riches offers its players plenty of ways to win; backed by a solid RTP.

Mega Riches is a very new casino, having just launched in 2024, however as it operates under the Videoslots banner you can expect to find a wealth of games here from an outstanding number of providers.

Megaways rules at this casino, with over 220 Megaways titles available to play and there’s also a handful of jackpot slots for those interested too.

A large library can often be hard to find your favourite titles, but at Mega Riches they have a very convenient filter that allows you to search via game mechanics, so whether you’re after walking wilds, branded games or slots with bonus games, they have made it easier than ever.

Here at Mega Riches you will also find their loyalty programme, which will reward you XP as you play and as you go through the levels you will earn trophies which can be exchanged for a spin on the Wheel of Riches which will award you the chance to win one of three jackpots. The fun doesn’t stop at Mega Riches!

Read our full Mega Riches Review UK

Lottomart
Lottomart Casino Review UK
4.1/5

Lottomart is the ideal casino for those who truly want a bit of everything, as well as slots you can also access live casino, RTP table games, scratchcards, bingo and lottery games all in one place.

This casino was founded in 2017 by Maple International Ventures ltd and has the highest RTP among our top five slots casinos. Overall, you will find over 3,200 slots here, but for those Slingo lovers you will be glad to know there are over 45 Slingo titles available to be played, on top of the slots collection.

As well as the Slingo titles, you will also find over 345 jackpots here and a whopping 210 Megaways titles too. Whether you’re into seasonal themed slots, provider series, or the newest arrivals, Lottomart has it all. Furthermore, you’re in luck at this casino as its RTP is much higher than the industry standard; at 97.5%!

For those Pragmatic Play Drops & Wins fans, you can find 50 titles here. And for those who struggle to choose which game to play, Lottomart refreshes its ‘editor’s picks’ regularly and currently you have 53 suggested titles to choose from, making it easier to find your next favourite game.

Furthermore, the new arrivals section is updated from the games released in the last 30 days, so you are getting the latest titles as soon as they come out; so if you’re looking for the next Rich Wilde title or the next series installment from NetEnt’s Starburst, Lottomart will be one of the first casinos to get ahold of it.

Read our full Lottomart Casino Review UK

Betrino
Betrino Casino Review UK
4.5/5

This ProgressPlay-owned casino was launched in 2020 and stands proud in our top list thanks to its many slots and slots-related bonuses on offer.

Betrino, formerly known as BritainBet, has over 2,300 slots in its arsenal with over 192 jackpots available and 118+ Megaways titles at your fingertips.

For seamless play, Betrino offers 24/7 support via live chat and email as well as providing a loyalty programme for those seeking one. The VIP programme consists of levels which unlock when you fulfil various missions, you can use the points to purchase free spins in the rewards shop.

Betrino offers speedy withdrawals, with Skrill, Neteller and instant bank payment withdrawals becoming available within one business day. Furthermore, minimum withdrawal is just £5 at this casino, which is a huge perk for those low-ballers.

However for the high rollers, you will have a plethora of offers available to ensure you’re getting the most value out of your buck. Betrino offers a ‘Golden Harvest’ bonus which rewards up to £1,500 in bonuses and up to 360 free spins, as well as ‘cashback weekends’ ‘Saturday Spinners’ and ‘Sunday=Funday’ offers where loyal players are all rewarded.

Read our full Betrino Casino Review UK

The top casinos for slot games


As well as sorting out which casinos offer the best slots, we also compare our top five casinos and their slots offering to see who comes out on top! We compare the RTP of the slots at our top casinos, the amount of slots, jackpots, Megaways available, as well as the number of providers on-site.

Average RTP 94.00% 94.56% 96.78% 94.60% 97.50%
Slots 9,100+ 8,300+ 5,800+ 3,200+ 2,300+
Jackpots 860+ 660+ 35+ 345+ 200+
Megaways 340+ 300+ 220+ 210+ 120+
Providers 195+ 195+ 150+ 70+ 75+

Best free slot games

What slot bonuses can you claim in the UK?


As slots are often the most common game that the majority of casinos have, it’s not hard to find a bonus you can use to play slots. Here are some of the most common bonuses in UK casinos.


  • No-deposit bonuses

    A bonus that doesn’t require deposits to claim. It may give a small amount of cash or free spins applicable to slots.

  • Free spins

    Promotions provide some spins that apply to slots chosen by the casino operator, ideally you want your free spins to come with no wagering requirements so you can keep all of your winnings.

  • Deposit match bonuses

    Receive a percentage of your deposit as a bonus of up to a certain amount.

  • Reload bonuses

    Promotions for existing players that can be claimed when they make more deposits. The bonus can be a deposit match bonus, free spins, or other bonuses.

  • Cashback

    Players receive a percentage of their losses back. Commonly offered through VIP programmes.

  • Free draws

    Mini games you can play to get random rewards. The spin-the-wheel game is the most common free draw promotion, but casinos offer free draws through a variety of innovative mini games.

What to watch out for when using slot bonuses


Casino bonuses have a lot of requirements you must fulfil to be eligible for the bonus.

Therefore, you must read the full terms and conditions of the bonuses you want to claim. By reading the terms and conditions, you’ll get more information about how to qualify for and how to use the bonus.

There’s a lot of important information within the terms and conditions. Most bonuses, especially the ones requiring deposits, have a specific minimum deposit requirement. If you fail to follow this, you won’t be able to activate the bonus. This can be crucial for welcome bonuses, which are only claimable on the player’s first deposit, as not following the requirement may cause you to lose the bonus forever.

Each bonus also has different validity periods, maximum win and wagering requirements. If you aim to withdraw the winnings you get from using the bonus, you must fulfil the wagering requirements before the bonus expires. Some bonuses might have a short validity period, such as 24 hours, but come with a high wagering requirement.

Other bonuses might be limited to specific games. The operator would usually list the games for which the bonus can be used on as well as the games that can contribute towards the wagering requirements.

Check out these fun slots now

Popular slots types to play


As slots are games that most casinos have, it’s not hard to find a bonus you can use to play slots. Here are some of the most common bonuses in UK casinos.


Classic slots

Classic slots are retro slot machines-inspired online casino slot games. They tend to have three reels and only one to five paylines; and you'll rarely encounter bonus features or complex mechanisms within this type of game.

Besides the mechanism and gameplay, classic slots are designed with retro slot elements. You'll often notice symbols used in many old slot machines, such as fruits, 7s, bars and bells.

With the development of slot games, developers have also been launching classic slots with modern twists. So now, they'll have some innovative features, more paylines, or creative designs that can compete with newer slots.

Some perfect examples of classic slots still popular among UK players include Mega Joker from NetEnt, Double Diamond by IGT and 7s on Fire by SG Digital.

Video slots

Video slots are slots that are more layered in design and gameplay. They usually have grand decorations, such as animations, mascots, fleshed-out characters, cut-scenes, and more. They're also often thematic, with a fun soundtrack accompanying the theme.

Most video slots offer features throughout the gameplay, such as bonus games or features players can find on the base game.

With developers constantly releasing creative ideas, players can enjoy new gameplay on video slots. Unlike classic slots, video slots generally have five reels across.

The most renowned video slots include King Kong Cash, The Goonies and Rich Wilde and the Book of Dead.

Progressive jackpot slots

Progressive jackpot slots are a type of jackpot slot where the pot prize amount isn’t fixed. The jackpot amount changes depending on how many players have played and bet on the slot.

When you play progressive slots, a percentage of your stake goes into the jackpot. This makes progressive jackpot slots exciting as the pot can grow into a massive one, worth tens of millions. Once a player wins the pot, the prize amount is reset to the developer’s 'seed prize,' a set starting point amount that differs for each game.

Mega Moolah and its variations are the most famous examples. However, Age of The Gods and Aztec Millions are well-liked and commonly found in many online UK slot sites.

Multi-line slots

Online slots use 'lines' or paylines to determine when the player hits a win. Some slots, like classic slots, come with a single payline, which means if the reels land matching symbols on where the line is, the player receives a payout according to the value of the winning symbol.

Multi-line slots are games with more than one payline. The number can go up to thousands, but the most common slots in the market currently have 20 to 100 paylines in play. Some slots also allow players to activate or deactivate the lines according to their preferences.

A long list of multi-line slots are currently popular, but Gonzo's Quest, which offers 20 paylines, is one of the most well-known titles. Rainbow Riches and Wolf Gold are also popular multi-line slots you can easily find in most UK online casinos.

Megaways slots

The Megaways mechanic was created by Big Time Gaming, now owned by Evolution Gaming. This particular mechanic allows thousands of potential payline wins, up to 117,649 ways to win, instead of the standard 20 paylines you often come across on traditional slots.

Megaways offers more ways to win inside the paylines and this feature has since been added to a lot of popular titles, enhancing gameplay on traditional favourites such as Big Bass Bonanza Megaways.

Different slot themes


Slot developers have become increasingly creative over time. Modern slots add excitement to gameplay by implementing different themes and fleshing out the storyline for the player’s immersion. Here are some developers' most commonly used themes that you might have seen in some of the UK’s best online slots.


Mythology
Mythology

Developers have been implementing rich stories and legends from various cultures, from gods and goddesses to mythical creatures, since slots came about. Greek mythology is one of the most common themes that you will spot on popular slots; enchanting players with grand designs, a storyline, wealth symbolism and beautiful characters.

Fruits
Fruits

The charm of older retro slots has never faded and fruits are the perfect theme to bring players nostalgia. Cherries are iconic to retro slots, but many fruit slots are using other fruits creatively to give players new kinds of fruit slots.

Movie and TV shows
Movie and TV shows

Some movies and TV shows have made history and influenced many other industries, including online casinos. Thanks to this development, we can now enjoy our favourite movie-inspired slots, like Jurassic Park and Jumanji.

Ancient Egypt
Ancient Egypt

Ancient Egypt has lots of mysteries that the media often used as inspiration, including slot developers. Many slots have used Cleopatra as its main character as well as other symbolism such as pyramids, sphinx, jewels, or any other item related to exploring ancient Egypt.

Outer space and sci-fi
Outer space and sci-fi

The outer space is a mysterious place many have often dreamed about visiting. This is why the theme is popular among mainstream media and inspires many online slots. From using symbols like colourful stars, planets and even extraterrestrial beings, developers find creative ways to bring the galactic experience closer to players.

Fantasy
Fantasy

Fantasy slots take players on an adventure in a magical world. Many developers use fantasy creatures like dragons, fairies, trolls, crowns and jewels. Many of them also flesh out the storyline for an even deeper immersion, such as Blueprint Gaming’s Wish Upon A Jackpot.

Top slots providers

NetEnt NetEnt
Play'n GO Play'n GO
Playtech Playtech
Red Tiger Red Tiger

Best slots for mobile play


Slot developers understand the importance of mobile experience.

This is why almost all online slot games are well-optimised for mobile browser use. The interface follows the size of your device’s screen. Therefore, even when playing on smaller screens, you can still see the symbols and comfortably use the buttons.

There's no correct answer if you’re looking for a slot that’s best for mobile play. You can browse the slots available on your chosen casino when using your mobile and try playing them to see how they run on your device.

You might also want to play at casinos that offer mobile apps, if you spend more time playing on the go. The slots featured on the apps are optimised for various mobile devices and tend to run smoother than when using browsers.

Basic tips for playing online slots


Online slots are games of chance that you can’t manipulate the outcome of, but there are some things you might want to know, to get a slight advantage, before jumping in with real money.

Practice using the demo mode

Some casinos allow you to play the slot’s demo mode after registering. By using the demo game to practice, you can check and learn the slot’s features and familiarise yourself with all it has to offer.

Start small

Place a smaller bet, at first, especially when trying new games. Once you’re comfortable with the game, freely adjust your bet with your budget in mind.

Understand the slot

Each slot offers different features and winning chances. Before you play, learn everything the slot offers by checking its game rules and paytables. Take note of the RTP, a percentage of return you can receive in the long run and the volatility, which affects the frequency and amount of payouts the slot gives.

Take advantage of bonuses

Most online casinos offer a promotion for slots. Browse these offers beforehand to see if any bonuses can boost your account before playing.

Play with your budget in mind

Some slots have low minimum bets, while others might have higher minimum bets. Set a strict limit on how much you’re willing to risk when playing and wisely adjust your bet.

Step-by-step guide for signing up to an online slot site


Online slots are pure-luck games that you can’t manipulate, but there are some things you might want to know before jumping in with real money.

Compare your online casino options and choose the one you like the most.
Load the casino site and click the ‘sign up’ button.
Fill in all the required fields on the registration page. You usually have to enter your full name, home address, date of birth, email, and phone number.
Some online casinos require you to choose the welcome bonus during registration. Read the bonus terms and conditions before choosing one if you’re interested in claiming.
Read the casino’s full terms and conditions before making your first deposit.
Verify your email or phone number to ensure you can deposit after registering.
Log into your new account, make your first deposit and claim your welcome bonus to start playing.

Popular payment and withdrawal methods

Debit cards

Although many new payment methods have emerged, debit cards remain among the most popular payment methods that almost all online casinos accept. Visa and Mastercard are widely accepted, but many casino sites also take Maestro and more.


E-wallets (PayPal, Skrill, Neteller)

E-wallets have become famous for UK players to deposit and withdraw money from online casinos. E-wallets act as a middleman that connects your bank account with the merchant, so you won’t have to share your banking information when transacting with e-wallets. They’re also known to be faster in processing transactions.


Neosurf

If you prefer a pre-paid voucher, Neosurf is the most commonly accepted method in the UK. You can then use the PIN on your voucher when depositing.


Paysafecard

Paysafecard is the most popular prepaid card among UK online casinos. Prepaid cards can be the best depositing method if you want to limit your spending strictly.



How do we rate slot sites?


We aim to provide a helpful and informational guide for casino players. To achieve this, we have set specific criteria when looking for the best slot sites to ensure we remain unbiased.


  • 01

    A competitive welcome offer that can be helpful for new players.

  • 02

    The overall interface and user experience of the casino site, making it easy for players to browse, navigate and find information.

  • 03

    Mobile compatibility with apps and quality across devices with various screen sizes.

  • 04

    Prompt customer service and if the channels operate on limited hours.

  • 05

    Withdrawals and deposit processing, if fees are attached to transactions, and how quickly the operator processes payments.

  • 06

    Slot variety.

  • 07

    The VIP or loyalty programmes available for existing players.

  • 08

    Overall strengths and weaknesses of the casino site.

Legal situation
with gambling in the UK

All UK residents aged 18 or older are allowed to enjoy gambling activities. The UK Gambling Commission (UKGC) regulates online gambling sites operating under the UK government's law, so choosing an online casino licensed by UKGC is better for UK players. That way, players gain extra protection in case of dispute, where they can report their complaints to the authoritative body.

When an online casino operates under the UKGC regulation, the operator must follow strict rules according to UK gambling laws and standards. The authoritative body may fine operators for not following the rules, ensuring your safety and security while gambling online in the UK.

Responsible gambling

UKGC-licensed online casinos must provide responsible gambling resources that their players can use when necessary. Operators often partner with responsible gambling charities like GamCare, GamStop and GambleAware; and most will offer extra tools that players can activate according to their preferences.

These tools allow you to set strict limits on your gambling activities and your account usage. For example, you may place a deposit, bet and playtime limit. Depending on your needs, you may also block your access to the casino site temporarily, or permanently. If you’d like to learn more about responsible gambling, read our full responsible gambling page.

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FAQs

  • Each casino site has a specific procedure for claiming its welcome bonus. Some might want you to activate it during, or before, registration or put a promo code in when making your first deposit. Check your casino’s promotions page and read the welcome bonus terms and conditions to learn more.

  • Not all online slot sites are safe and regulated. Load the casino site and scroll down to the bottom to see the casino’s regulatory body information, or read its terms and conditions to check its licensing details. Look out for a licence from the Gambling Commission, as this means the casino is regulated in the UK.

  • Video and multi-line slots are common and featured in most online casinos. You’ll also find many variations of jackpot slots, Megaways and classic slots.

  • Yes, you can win real money by playing online slots. You'll also receive a payout when you play online slots with real money and win.

  • A progressive jackpot slot offers a jackpot prize whose value can grow bigger over time. A small percentage of the player’s bet goes to the prize pot, causing it to get bigger until one player wins the pot prize.