Best UK Slot Sites – Play Slots Online
There is little doubt that we are spoilt for choice when it comes to slot sites in the UK. Due to there being so many good online casinos, it can be difficult to know which to choose.
Some may be attractive because of a lucrative welcome bonus. Others will have a vast collection of slot games. Then, some might offer the payment methods that you prefer.
Do you have the time to research each one yourself? Surely you just want to play on some of the best slot sites without the research?
This is where we step in! We have tested and reviewed each of the top slot sites that legally accept UK players. Only the very best of them have made our list of recommendations.
Top Online Slot Sites – 2024
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Before we add a slot site to our list, our team tests them over a period of weeks and months to get a firm feel of what they offer.
Even then, we have a minimum set of requirements before slot sites can make our list.
They are:
- The slot sites must have a UKGC licence
- Their customer support must be of a high standard
- Plenty of payment methods should be available for players to use
- The slots sites must be mobile-optimised
And, of course, they must have an excellent selection of top-quality slot games.
There is little left for you to do other than to read our reviews. Then, sign up to your chosen slot site, and start playing entertaining slot games.
We have done the hard part for you so you can enjoy the fun part.
Benefits of Playing Slots Online
In decades gone by, playing slot machines meant you had to get dressed and make your way to a pub or land-based casino.
This is no longer the case thanks to new slot sites. Not only that, online slot sites have hundreds of excellent slot games compared to only a handful.
It’s never been easier to play online slots from desktop or mobile devices.
Another benefit of playing online is that the games have higher RTP percentages. This stands for Return To Player.
Because of lower overheads, slot sites can offer higher RTPs which in turn gives players a better payout.
At land-based casinos, slot machines will give you around 90% RTP while at online casinos, the average is 96%. It’s possible to check the online slot RTP payout percentage by searching the game’s guide.
To do so click the “?” in the bottom corner of the game screen. This can change depending on the slot provider, instead of the “?” you may see a clickable “i” symbol.
As you can imagine, it is easier to mass-produce online slot games than physical ones too. This means that you will get access to new slot games at a faster rate than you would at your local casino. In fact, new UK casinos often launch with the latest slots.
Different Types of Slots
The significant thing about playing at online slot sites is that you have a huge choice of slot games to play. Not only that, but you also have a great variety of slot types to enjoy too.
You can play classic slots, progressive jackpot games with payouts into the millions. Then there are low volatility slots that provide more frequent wins but lower payout. Or the opposite, high volatility slots giving fewer wins but higher total wins.
At the best slot sites outlined on this page, you’ll have a wide range of games to play.
Video Slots
Video slots are the most common casino game you will find at the top slot sites.
They feature fantastic graphics, cinematic sound effects, innovative game mechanics, and many bonuses.
Essentially, these are modern slots that showcase the innovative talents of software providers. They provide the best gameplay for players.
Good examples of video slots are:
- Starburst
- Gonzo’s Quest
- Bonanza
- Game of Thrones
- Book of Dead
Classic Slots
Think back to the fruit machines you used to play in the local pubs and clubs, these are your classic slots.
These usually feature 3-reels and a single payline, do not have many bonus features and are simple to play.
Of course, there are some classic slots that offer more such as Break Da Bank by Microgaming. This slot has 3-reels but also 5-paylines. Some have bonus features, as well as wilds, scatters, and mini-games.
Another way to spot a classic slot is via the symbols on the reels. Fruits, sevens, bars, and bells are the usual suspects. Generally, these slots are better suited to new players or those that like a simple way of playing.
Online classic slots include the below:
- Jackpot Jester Wild Nudge
- Lucky Diamonds
- Ace of Spades
- Wild Melon
- Mystery Joker
Jackpot Slots
You can find the biggest money when playing progressive jackpot slots at the best slot sites UK. In fact, you could win jackpots in the millions, sometimes even tens of millions.
You might have read about the player that won €14,239,532.84 playing the popular progressive slot Mega Moolah.
Other popular jackpot payouts have come on Hall of Gods, Mega Fortune, or Major Millions.
These slots can build the total prize pool to huge sums due to those jackpots being shared over a network. This differs from some slot games that have their own local jackpot.
Each time a player spins on one of these slots, it adds a percentage of their stake to that shared network jackpot. It continues to grow until one lucky player manages to scoop the lot.
The chances of winning a progressive jackpot are small but much like the lottery, you have to be in it to win it.
Branded Slots
Branded slots first emerged online in 2004 with Lara Croft: Tomb Raider by Microgaming. Since then, many slot developers have partnered with global franchises to release branded slots. These brands could be a television show, movie, music band, cartoon, or even a board game.
At the best slot sites, you are likely to find a plethora of branded slots to enjoy. Notable slots include:
- Game of Thrones (Microgaming)
- Jurassic Park (Microgaming)
- Who Wants to Be a Millionaire (Big Time Gaming)
- Guns ‘N Roses (NetEnt)
- Narcos (NetEnt)
- Planet of the Apes by (NetEnt)
- Monopoly Big Event (Scientific Games)
High Volatility
The volatility of a slot game is determined by the frequency and amounts it pays out. Volatility which is also known as variance ranges between low and high.
A high variance slot will payout less frequently than low variance slots but bigger wins when they do. The ability to land bigger payouts makes this type of slot one of the most sought by players. These are a particular favourite for high rollers.
You need patience and a large bankroll to stand a chance of success. But when those big payouts land, the rewards can be huge. High variance slots typically have lower RTP percentages, so take this into account.
The best examples of high volatility slots include:
- Book of Ra (Novomatic)
- Dead or Alive (NetEnt)
- Book of Dead (Play’n Go)
- Immortal Romance (Microgaming)
Low Volatility
On the flip side, a low volatility slot will pay out more frequently but payouts will be more modest.
They will give you lots of action and entertainment as you will never wait too long for your next payout. This type of slot will suit smaller budgets and those that want to play for longer to enjoy the gameplay.
One of the most popular slots at the top slot sites in the UK is a low volatility slot. Often considered the best slot release of the last decade is Starburst by NetEnt. All slot sites have Starburst due its popularity even if it is over a decade old now.
It has 5-reels, 10-paylines, and a win-both-ways mechanic. Due to these features, this slot offers some of the best fast-paced action around.
Other notable low volatility slots include:
- Thunderstruck II (Microgaming)
- Wild Scarabs (Microgaming)
- Bloodsuckers II by (NetEnt)
- Enchanted Garden II (Real Time Gaming)
Slingo
Slingo is a game type that is a hybrid of slots and bingo. Gaming Realms acquired the Slingo intellectual property in 2015. Since then they’ve expanded the number of games and these can now be played at online slot sites.
Generally, Slingo games have one spinning reel and a 5×5 grid with numbers on it that you have to match, like bingo. You need to complete as many rows and columns as possible to reach a prize and bonus game. Along with this, there is the addition of wilds, super wilds, and extra spins like what you find on slots.
Games from Slingo Originals have been a popular hit with UK players. This comes as no surprise as the UK population enjoys both slots and bingo.
We’ve written a full guide on the best Slingo sites and games. Make sure to check it out if you’re curious about this game variant.
Online Slot Providers
Behind every great slot game at all the best slot sites is a slot developer.
These companies are responsible for the thousands of slot games that you’ll find at online casinos. Some providers are better than others. At UK slot sites, you will get to experience some of the best developers in the industry.
Each software developer has their own unique style. Make sure to check if the online casino has your favourite slot providers before registering.
NetEnt
Without a doubt, NetEnt is one of the biggest names in the iGaming industry. Founded in 1996, NetEnt has developed over 200 casino games and won many awards for some of them. You’ll be able to find their games at all the top UK casino sites.
NetEnt is known for innovative bonus features, fabulous graphics, and some of the most popular titles. They rarely let players down.
As well as the top slot games and progressive jackpots, NetEnt also offers RNG table games.
Our NetEnt slot recommendations:
- Starburst
- Dead or Alive 2
- Narcos
- Gonzo’s Quest
- Mega Fortune Dreams
- Hall of Gods
Microgaming
Another software developer that has been around since the year dot is Microgaming.
Microgaming has proved to be prolific at developing entertaining, well-designed slots.
In total, Microgaming has developed over 600 games with half of those being online slots.
You can expect a broad spectrum of Microgaming slot games too. Everything from classic slots, video slots, and progressive slots. These slots differ when it comes to varying themes, reel formats and bonus features.
Our Microgaming slot recommendations:
- Game of Thrones
- Mermaids Millions
- Mega Moolah
- Thunderstruck II
- Break Da Bank
Red Tiger Gaming
Compared to Microgaming and NetEnt, Red Tiger is a relatively new software developer.
That said, it has not taken them long to establish themselves as one of the best in the industry. Found at many of the best slot sites in the UK, Red Tiger games are usually among the most popular.
Red Tiger adopts a quality over quantity approach, so their portfolio is not the biggest. But, you can expect their slot games to be innovative, entertaining, and have a superb animatic experience.
They’re probably best known for there daily jackpots network. You can find some of their games at casinos that have hourly, super and daily drop jackpots.
Our Red Tiger slot recommendations:
- Rainbow Jackpots
- Three Kingdoms
- Mega Jade
- Puss N Boots
- Jingle Bells
Big Time Gaming (BTG)
Big Time Gaming has made some big moves in the industry in recent years, even though being founded in 2011. Most notably since launching the MegaWays slot mechanic. This win-any-way mechanic has revolutionised slot games.
It’s great to see their success and ability to challenge long-established names such as NetEnt and Microgaming.
Especially popular in the UK, you will find the entertaining slot games from Big Time Gaming at dozens of top slot sites.
You’ll see many Megaways slots developed by other slot providers too. This is because since 2018 BTG are now licensing out their trademark game mechanic.
Our Big Time Gaming recommendations:
- Bonanza
- Extra Chilli
- White Rabbit
- Star Clusters
- Royal Mint Megaways
Play’n GO
Play’n GO is a Swedish developer that has been around since 2007. Since then it has become one of the leading software developers in the industry.
Where they stand out is that the core goal is not to be the biggest developer but the best developer. Still, they have over 100 titles to their name which means they have been quite productive over the years.
We’re sure you’ve played at a Book of Dead slot site before as this is the most popular title from Play’n GO. It has become one of the go-to free spins games for UK slot sites.
Our Play’n GO recommendations:
- Book of Dead
- Reactoonz
- Disco Diamonds
- Fire Joker
- Aztec Princess
Novomatic
Microgaming and NetEnt might spring to mind when you think of the oldest developers of slots. That is true when thinking of online slots, but Novomatic slot games have been around for land-based casinos since 1980.
Their online portfolio is not huge, but their extensive experience ensures each one is of a high standard.
Our Novomatic recommendations:
- Book of Ra
- Lord of the Ocean
- Dolphin’s Pearl
- Sizzling Hot
Mobile Slot Sites
Most slot sites are mobile-friendly these days. They would not last too long if they weren’t to be honest. Besides, we only feature slot sites that work well on both mobile and desktop devices. All online casinos should accommodate for mobile players, either by having a responsive product or by mobile apps.
In years gone by, online casinos didn’t have the mobile-first mentality. You would find complicated menu systems, small buttons, links, and cluttered lobbies that were designed for PC players.
These days, big buttons and no clutter is the way to go due to small screens being the preferred method.
The following are some of our recommended mobile slot sites UK:
20 Free Spins on Big Bass Splash
✔ 20 free spins on 1st deposit
✔ No wagering requirements
✔ Exclusive bingo games
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✔ 24/7 customer support
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✔ 50 Free spins on sign-up
✔ Exclusive casino games
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100% Deposit Match Up To £50 + 20 Free Spins
✔ Around since 2005
✔ Large range of live casino games
✔ Great app on iOS & Android
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✔ Zero wagering requirements!
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✔ 3000+ casino games
Best Slot Sites No Wagering
A slot site offering a huge welcome bonus does not mean it is the best online casino to choose. Online casinos usually create these bonuses to attract new players. But this does not mean it is a better casino than the next one.
In our opinion, there are more important factors in choosing a slot site. For example:
- The variety and quantity of slot games
- Quality of customer service
- Payment methods offered
- Whether the casino is mobile-friendly or not
Besides, big welcome bonuses usually means complicated and restrictive wagering requirements. Online casinos do not just hand over the money, they want to make sure you play-through that bonus. The number of times you have to play-through your bonus can be 25-65x before you can withdraw any winnings.
Luckily, some online casinos have given players some middle ground.
Rather than picking between no welcome bonus or a large bonus with high wagering, these casinos offer modest bonuses with no wagering!
PlayOJO and MrQ casino are two slot sites that have no wagering requirements. This isn’t just on their welcome bonus, but on all future bonuses too.
Generally, you’ll get a number of free spins upon making a deposit. Then, whatever you win from these spins is returned to your cash balance. You can withdraw this amount or keep playing on other slots.
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✔ Zero wagering requirements!
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Online slots with the highest payouts
We all want to win big payouts, otherwise, there would be little point playing slot sites at all. But, determining which slots payout the best is not as straightforward as you might think.
Sure, if you want the biggest payouts, you play progressive jackpot or high variance slots. These will give you the best chance at bigger single payouts but generally at the expense of a lower long term RTP.
RTP is the best way to determine which slots can make you the most money or minimise your losses over the long term.
They might not give you huge one-time payouts but you will get a better return for your money.
It’s important to remember to play slots as a form of entertainment. You should only spend what you can afford to lose.
Slot Sites FAQs
Which slot sites give free spins when joining?
You will find that most slots sites will give a welcome bonus of some kind. This could be free spins, a match deposit bonus, or sometimes even both.
You may even find some slot sites that give you free spins just for registering an account - no deposit needed. Our list of recommended slot sites UK will show the welcome bonus currently offered.
What are the top online slots to play?
There are thousands of different slots that can be played at the best slot sites. Each player has their own opinions on which are the best. But, generally, the most popular usually have amazing graphics, smooth animations, and fun bonus features.
Currently popular at the best slot sites is Starburst from NetEnt, and Book of Dead by Play’n Go. Then, any MegaWays slot game from Big Time Gaming or other providers are also very popular.
Are online slots rigged?
No, each slot on our list has a license from the UK Gambling Commission. The UKGC imposes strict rules and regulations for their licensees to adhere to.
This includes agreeing to have their games tested and audited for fairness and accuracy of RTP percentages. For those reasons, you can have the peace of mind that the slot sites we recommend are not rigged. It's also why it's important to play at UKGC-licensed casinos.
Do high-limit slots pay better?
In short, yes. Basically, the more you can wager per spin, the more you will win when you land a symbol combination. It is relative, however.
Yes, a £50 spin that lands a 1000x payout will give you more than a 25p bet on the same slot but you stand to lose more if those spins don't produce any wins.
A better way to determine how well a slot pays is through their RTP (return to player) percentage. You can expect to have better long-term success playing a 99% RTP slot than a 92% RTP slot.