Best Slot Sites in 2024 - UK Online Slots

Last Updated: 10/10/2024

Looking for the best slot sites in the UK? Explore top UK online slots featuring generous free spins, huge game libraries, and exciting progressive jackpots. From bonuses to gameplay, this guide has everything you need to start your journey into online slots.

Best Slots Sites in the UK

Every player has unique preferences, which is why some UK online slot casinos may appeal to you more than others. Our list of the best slot sites is organised into key categories that matter most to players. Explore our top picks below and find the casino that perfectly matches your personal gaming needs.

Quinn Casino – Best Slot Site for Free Spins

You can grab 50 free spins when you register with Quinn Casino, a generous amount considering there is no wagering requirement on the bonus. Quinn Casino also offers a paradise for slot players, with 2,000+ games ready to play. Pick slots, including 50+ jackpot games, from providers such as Pragmatic Play, NetEnt, Playtech, and Gaes Global.

NRG – Best New Slot Site

NRG Casino debuted in the UK in 2024, making it one of the best new slot sites. The site welcomes slot players with 80 free spins to use on Big Bass Bonanza from Pragmatic Play. There are over 1,800 slots in total to choose from, including Drops & Wins and Megaways. NRG also has a slots club where if you bet £250 on set games, you receive 50 free spins.

Barz Casino – Best Slot Site for Game Variety

Barz is one of the best slot sites if you want as much flexibility as possible. You can pick from over 3,500 slot games, including progressive jackpots, Megaways, and Drops & Wins. To ensure the most dynamic game portfolio possible, Barz Casino works with over 100 different software providers.

QuinnCasino – Best Slot Site for Progressive Jackpots

QuinnCasino’s outstanding list of progressive jackpot games stands out among our top online slot sites.There are 2,000 total slots, 50 of them jackpot titles. What impresses us most is the number of iconic jackpot slots, like Games Global’s beloved Mega Moolah series, the company’s WowPot Network, Playtech’s classic Age of the Gods franchise, and Power Play Jackpot slots.

Types of Online Slots

While the core gameplay of slots remains consistent, the best slot sites featured on this page offer a variety of game variants. Each slot type comes with unique features and nuances worth exploring before you play. Below are the most popular slot variants you’ll encounter at UK online casinos:

Free Slots 

Most online slots can be played for free. Software providers have demo versions that you can play to practise the game, test new slots, or just play for fun without risking your money.

Real Money Slots 

On the flip side, all slot games on UK casino sites are real money games. What this means is that you can bet your own money and risk it to potentially win a payout from the slot.

Classic Slots 

This type of slot mirrors the old-school appearance and gameplay of mechanical slots, typically fruit machines. The gameplay is simpler, with no features or modifiers such as free spins.

High Volatility Slots 

High volatility slots are games that are more likely to deliver big payouts but may not trigger wins often. This means you may need to be patient and have a bigger bankroll.

Multi-Reel Slots 

As the name suggests, a multi-reel slot is a game that uses more than one reel spinning and landing symbols. Most standard slots have three reels, but a multi-reel game may have up to six.

Progressive Slots 

Progressive slots have a jackpot that grows by taking a portion of every bet from every player. The prize pool continues to grow until someone wins, when it will reset to a base amount.

Video Slots

Modern online slots are also known as video slots, and they offer video-game-like visuals and exciting features like free spins, multipliers, expanding wilds, bonus rounds, falling reels, respins, and more.

Daily Slots

Perhaps the most flexible type of online slot, daily games have features and gameplay that change from day to day. Users get a fresh experience and new ways to win the game.

Drops & Wins Slots 

Created by Pragmatic Play, Drops & Wins is a type of slot that features a random payout that can “drop” at any time during gameplay. It uses a random number generator (RNG) to find a winner.

Top Online Slot Themes

Immersive graphics and thrilling gameplay are all part of the best UK online slots games. Whether it's exploring an ancient tomb or plundering treasure on a pirate adventure, slots come in many different themes. We will only scratch the surface below, but let’s look at some of the most popular slot categories:

Irish Slots 

Irish-themed slots, inspired by the Emerald Isle and leprechaun folklore, are a popular choice. These slots often feature playful designs, rich in green hues and shimmering gold coins. One of the most iconic examples is Rainbow Riches by Barcrest, a standout in the Irish slot genre.

Mythology Slots

Norse and Greek mythology are common, using iconic gods such as Thor and Zeus. Because of the rich inspiration, mythology slots usually have lots of features, slick graphics and video-game-like quality. If you love progressive jackpot slots, Playtech’s Age of the Gods and its Greek theme franchise is one of the best.

Egyptian Slots

Conjuring the charm and intrigue of Egyptian gods and ancient civilization, slots with an Egyptian theme are available from most software providers. Dusty tombs and sandy desert landscapes define this genre of slots. Cleopatra from IGT uses an Egyptian theme and is one of the most famous slot games.

Fruit Slots

Fruit machines were the first land-based slots, as players would win fruits instead of money. In modern online casinos, fruit-themed slots are usually classic slots with simple gameplay. Traditional symbols include cherries, grapes, oranges, melons and lemons, as well as 7s and BAR. A good example of a modern fruit slot is Fruit Shop by NetEnt.

Animal Slots 

Animals always make for excellent slot designs. Common examples include jungle or safari, North American wildlife, or individual animals such as wolves. Notable examples in this example include Buffalo Blitz by Playtech and Games Global’s world-renowned progressive jackpot slot Mega Moolah.

Pirate Slots

These games are often filled with symbols like treasure chests, coins, maps, pirate ships, and rum barrels. Plus, many feature rousing sea-shanty-inspired soundtracks to immerse players in a swashbuckling atmosphere. Popular pirate slot games include Playtech’s Captain’s Treasure, NetEnt’s Ghost Pirates, and Just For The Win’s Adventures of Captain Blackjack.

Online Slot Mechanics & Features

UK online casino slots are games of luck that use a Random Number Generator (RNG) to decide the outcome. When the reels spin, the RNG automatically decides where the symbols will land on the reels, meaning each spin has an unpredictable and random result. Below, we will take a closer look at slot mechanics and features.

Slot Mechanics

• Reels and Rows: Reels are vertical sections on a grid, while rows are the horizontal sections. 5 reels and 3 rows are a standard online setup, but slots come in a variety of different configurations.
• Symbols: Symbols are the icons on the reels. On most slots, you need to have 3, 4, or 5 matching symbols on a payline to win in the base game.
• Paylines: For symbols to be in a winning combination, they must appear on an active payline, which is simply the pattern they must appear in to award a payout.

Slot Features

• **Wilds: **A symbol that substitutes any other symbol to help form winning combinations. Some games have extra wild features such as paying wilds, expanding wild, and wild reels.
• Scatters: The Scatter symbol unlocks the free spins bonus when you land a certain amount on the reels. Some slots also have paying scatters, which payout in their own right during the base game.
• Free Spins: These give you extra spins without you needing to bet your own money. You usually need to have a specific number of scatter symbols to open free spins.
• Multipliers – Multipliers are common features that are active during base games and bonus rounds. They will multiply the amount you can win.
• Cascading Reels – Also known as falling reels and tumbling reels, this feature is commonly found on Megaways slots. When a winning combination lands, it falls away from the reels and allows new symbols to replace it.

Top 10 Best Online Slots

Starburst

Starburst by NetEnt boasts simple features alongside dynamic gameplay and a thrilling design. The neon space-themed game has 5 reels, 10 paylines, and an RTP of 96.09%.** **You can play this game at many leading casinos, including Winomania.

Immortal Romance

Immortal Romance by Games Global was amongst the first slots to offer the 243 Ways to Win mechanic, allowing for a potential top payout of 12,150x your stake. With bonus rounds, 5 reels, and a 96.86% RTP, you can play Immortal Romance on Lottoland.

Book of Dead

Combining Indiana Jones with ancient Egypt, Play’n Go’s slot offers potential unlimited free spins. Featuring 5 reels, 10 paylines, and a 96.21% RTP, you can win up to 5,000x your stake playing Book of Dead on Pub Casino.

Sweet Bonanza

Pragmatic Play invites you into its candy shop for the tasty treats of Sweet Bonanza. It features All Ways paylines and 6 reels, with free spins and 100x multipliers. Sweet Bonanza has an RTP of 96.49%, and you can play it on Winomania.

Cleopatra

This cult-classic online slot from IGT has 5 reels, 20 paylines, and a 95.03% RTP. With a great number of free spins and a 3x multiplier in the bonus round, there’s a lot to like. Check out Cleopatra on Winomania.

Mega Moolah

Mega Moolah from Games Global has made dozens of millionaires. It’s known for its base jackpot that starts from £2 million. A simple game with 5 reels, 25 paylines and a 93.42% RTP, you can play Mega Moolah on QuinnCasino.

Bonanza Megaways

Bonanza is the first-ever Megaways slot. Big Time Gaming unleashed its mechanic, which offers up to 117,649 ways to win. Bonanza Megaways has 6 reels, up to 7 rows and a 12,000x maximum payout. You can try this iconic slot on Luckster.

Gonzo’s Quest

One of the first-ever blockbuster video slots, Gonzo’s Quest by NetEnt has 5 reels, 20 paylines and a 95.97% RTP. With top wins of up to 37,500x and Avalanche Reels, you can play Gonzo’s Quest on Barz.

Buffalo Blitz

Playtech takes us on a tour of the savannah in Buffalo Blitz, a game that can deliver 10,000x/stake wins. Spin 6 reels and 4,096 ways to win, with an RTP of 95.96%. Why not check out Buffalo Blitz on Fafabet?

Big Bass Bonanza

Reel Kingdom’s ultimate fishing slot game has a 5x3 configuration, 10 paylines and an RTP of 96.71%. You can win up to 20 free spins in the bonus round, with sticky wilds on the reels. We recommend using Lottoland to try Big Bass Bonanza.

How We Rate the Best Slot Sites

To ensure you have access to the best slot sites in the UK, we have a month-long multi-step review process.

Licences and Security 

Unless a casino holds a UKGC licence, we will not list it on this page. We take a similarly strict approach to security, and we test each casino for measures such as SSL encryption and secure payments.

Bonus Variety 

All casinos have bonuses, but having flexible promos is important. For example, free spins bonuses cater directly to slot players, while deposit matches give you extra bankroll. We also provide details on all the T&Cs you need to know about.

Game Library 

Our review team lists the total number of slots, available categories, and software providers. Ideally, we prefer casinos that have a broad selection of slots from major software studios. Because we play games during our review, we list the best titles available.

Payment Methods 

We want our readers to be able to deposit and withdraw casino funds without any issues. For each review, we deposit and cash out winnings. Our team reports on available payment methods, transaction limits, and how long it takes to receive a withdrawal.

User Experience 

With decades of experience, our review team knows how important customer care is. That’s why we always use customer support and provide impartial feedback on connection times and how helpful support agents are.

Free Slots vs Real Money Online Slots Games

Free online slots offer risk-free entertainment, making them ideal for beginners to practise and explore different strategies. With a variety of themes, they don't require registration or downloads, though they don’t offer real money prizes, and some features may be limited.

On the other hand, real money slots bring the excitement of cash prizes, enhanced by casino bonuses, advanced games, and the chance to win progressive jackpots. However, they come with financial risk, require registration and verification, and can lead to addiction. In short, free slots are perfect for fun and practice, while real money slots provide thrilling rewards for those seeking a higher-stakes experience. Here's a quick comparison:

How To Play Top Online Slots for Real Money?

1. Choose a casino: Click the link of one of our recommended slot casinos, such as Winomania, to head directly to the site.
2. Give your details: Provide your personal information, such as name, email address, home address, phone number, and date of birth.
3. Deposit funds: Click “Deposit” and choose a payment method. Input your deposit amount, provide the details for the payment service.
4. Choose a slot game: Now your casino account has funds, head to the game lobby and choose the game you want to play.
5. Play the game: Click the game thumbnail to load the game. Adjust the coin amount and click the spin button to start.

Best UK Slots Software Providers

NetEnt

NetEnt slots are available on most UK casino sites. Formed in 1996, NetEnt is now owned by Evolution Gaming. The company is known for its innovative approach to slot development.

Top 3 NetEnt Slots

• Starburst
• Gonzo’s Quest
• Mega Fortune

Games Global

Formerly known as Microgaming, Games Global has been around since the early 90s and has over 600 slot titles. The software provider created eCOGRA, an online gambling fairness group.

Top 3 Games Global Slots

• Mega Moolah
• Immortal Romance
• Thunderstruck II

Pragmatic Play

With bold graphics and immersive gameplay, Pragmatic is also the provider behind Drops & Wins slots, games that have an extra bonus that pays out randomly.

Top 3 Pragmatic Play Slots

• Sweet Bonanza
• Gates of Olympus
• Chili Heat

IGT

IGT forged its reputation as a developer of slot machines for land-based casinos. Translating its most beloved titles online means these classics are always available.

Top 3 IGT Slots

• Cleopatra 2
• Da Vinci Diamonds
• Siberian Storm

Play’n GO

Since its launch in 2005, Play’n GO now has over 300 titles in its impressive portfolio. The developer provides games to regulated online casinos in over two dozen jurisdictions.

Top 3 Play’n GO Slots

• Book of Dead
• Reactoonz
• Moon Princess

Online Slot Tournaments UK

Online slot tournaments are competitive events where players compete against each other on specified online slot games to win the most in a set amount of time. At the end, the player with the highest score (or most amount earned) wins a prize, such as bonus funds.

For example, Winomania Casino features the popular Drops&Wins tournament by Pragmatic Play, where you can win up to £2,000,000 in rewards every month by playing selected games.

Best Online Slots Bonuses

All the best slot sites we list have bonuses for new slot players as well as promos for existing customers.

• **Free Spins: **Free spins are literally free spins on a popular slot game. Quinn Casino currently offers up to 100 free spins.
• No Deposit: While most casinos require you to deposit to claim a bonus, no deposit promos do not need you to take that risk.
• Deposit Match: A deposit match is when the casino site matches your deposit by a percentage amount. At Winomania, you get a 100% match up to £100.
• Reload: With a reload bonus, the casino will reward you with something for making a deposit as a registered player. The bonus could be free spins or something stricter.
• **No Wagering: **You won’t need to play through your bonus funds or deposit amount before withdrawing with this offer. Quinn Casino currently offers 50 free spins with no wagering, meaning whatever you win is yours to keep.

UK Slots Responsible Gambling and Regulations

The UK Gambling Commission is always looking for ways to protect players. While regulations can frustrate casino operators and even players, measures are often for the better. UKGC rules state that slots in UK casino sites cannot offer Auto-Spin or Quick Spin features. The regulator argues these tools enhance problem gambling.

Another feature you can find in other regions that is prohibited in the UK is the ability to buy your free spins. Many slot games allow players to purchase their way into a bonus feature, but the UKGC does not permit this.

Top Tips for Playing Slots Responsibly

Understanding responsible gambling can help you play slots safely, and our expert tips below can enhance your knowledge. If you feel you are struggling, you can access resources such as GamCare, BeGambleAware, and the UKGC.

• Set a Budget: Set your bankroll from disposable income that does not come from your living expenses.
• Understand the Game: Always read the slot paytable to understand betting limits and payouts.
• Free Play or Demo Slots: Try to play for free if there is a game demo. This allows you to learn a game before risking your money.
• Explore Bonus Offers: Casino promotions can help boost your bankroll and allow you to play for longer.
• Practice Bankroll Management: Do not reinvest all of your profits, and avoid chasing losses.
• Play Progressive Slots Wisely: These slots offer massive payouts, but they also have much more risk.
• Know When to Stop: If your set budget runs dry, walk away and do not dip into money you cannot afford to lose.

FAQs

What is the best online slots site?

We currently rank Winomania as our top UK slot site, but you can also choose any of our top 10 casino picks and have top-notch experience.

What is the best UK slot to play?

Starburst is the most popular slot, but in reality, there are over 20,000 slots. We recommend trying multiple games to see which titles best suit your personal taste.

What online slots have the best RTP?

Online slots with an RTP of over 96% are above average. However, there are some titles, such as Ugga Bugga, that have an RTP of up to 99%.

Can I win real money on online slots?

Absolutely. Online slots are real money games primarily. The point is for you to risk your own bankroll to try and win a cash payout.

Are online slots safe in the UK?

Yes, especially if you choose one of our recommended best slot sites. We select brands that have a UKGC licence and independent game testing to ensure fairness.

How to win online slots?

There is no magic formula for online slots, as these are completely random games. However, understanding a game paytable and betting smart can help extend your bankroll and chances of success.

Related Pages

• Free Spins No Wagering

• Free Spins No Deposit

• Casino Bonus Codes

• Slots Offers

• New Slot Sites

• PayPal Slot Sites

• Best UK Real Money Casinos

• Free Slots

• Mobile Casino Apps

• Fast Withdrawal Casinos