Slot Providers

Here at 21.co.uk, we have many fantastic slot providers that create all of the online slots our players love. Each of our slot providers is unique and has different focuses on online casino gaming in the UK. However, it is definitely worth checking out all of our fantastic online casino providers to see what they bring to the table.

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Top Slot Providers

Of the growing list of slot providers, we have picked out some of the best game providers available, along with some of the top games in their collection.


Barcrest is one of the oldest providers in the world of online casino software providers. They were founded in 1968 and became an industry leader with significant enhancements to land-based casinos and bingo halls. Barcrest is one of the most iconic casino game providers in history thanks to their popular online slot, Rainbow Riches.

Big Time Gaming

As Barcrest was being acquired by Scientific Gaming, a new gaming company were being created in the form of Big Time Gaming. Although very few could have predicted it at the time, this new company would go on to completely change the complexion of online slots in ten years. If you're unfamiliar with what we're talking about, we recommend checking out our MEGAWAYS slots history and games. The MEGAWAYS engine was a genuinely iconic introduction to the world of casino, and we believe that with Big Time Gaming's desire to provide players with never-before-seen jackpots, that we'll see a lot more from BTG in the future.

If you're looking for more of the best online games that Big Time Gaming have to offer, check out the Bonanza online slot.

Blueprint Gaming

Since being founded in 2004, millions of players have been entertained by hundreds of online slots released by this popular provider. Blueprint are a slot provider that puts a lot of focus into pop culture themes, with Rick & Morty, Deal or No Deal, Worms and Sausage Party all finding their way into Blueprint slot machines in recent years. If you play slot games in an arcade, a bar or a land casino, you'll likely have played a Blueprint slot in person. If you're looking for a Blueprint Gaming slot to play online, then we recommend checking out the brilliant Deal or No Deal MEGAWAYS.

Evolution Gaming

Evolution Gaming is one of the top live casino games providers in the world, which means their presence in the United Kingdom is nothing short of fantastic for casino players. Although many of their games are variants of the most popular casino games - Roulette and Blackjack - Evolution has also created dozens of unique games using the Dream Catcher engine. If there is a new style of live casino gaming released, Evolution Gaming is likely behind it.


Created in 1997, Eyecon Gaming was formed by a "selection of players who wanted more". This slot provider brings a more scientific approach to online casino games as they look to implement their creativity into new games. In 2017, they were acquired by Playtech and have created some fantastic slots since the two began their collaborations.

Eyecon has created some brilliant online slots, but we recommend their most popular release, which is Fluffy Favourites.


Founded in 1975, IGT is an international company that has been at the forefront of the casino industry since before a lot of players were born. Their fantastic online slots are one of a kind and are often placed at the top of any online casino in the UK. Their origins can be traced back to Las Vegas, which is typically deemed one of the homes of casino. Their success at the top of both land and online casinos demonstrates the importance and impressiveness of IGT.

Inspired Gaming

Inspired Gaming is one of the most diverse gaming providers in the world. With a plethora of online slots available for players to utilise, there are a number of different ways to play.

If you're looking for top slots from Inspired Gaming, check out Reel King MEGAWAYS.

Iron Dog Studio

IronDog may not have been in the casino industry for as long as some of the big names on this list, but they have certainly made a big impact as part of the 1x2 Network. They are responsible for a number of the new online slots on the market today. We always look out for new releases from this brand, and there is always a guarantee of high-quality gaming in whatever they release.

Looking for the newest IronDog Studio slot on 21.co.uk? Check out Blirix’s Workshop today.


Created in 2010, iSoftBet was one of the leading providers in Europe within a number of years, leading to their partnership with IGT in 2013. After getting their UK licence in 2015, iSoftBet games quickly took over the UK market and became one of the UK's top providers. In 2019, they merged with Softgaming and have released a number of impressive slots since. iSoftBet slots have commonly been popular with our fans, and one of our favourite games is the fantastic Western Gold MEGAWAYS.


Microgaming are icons of the online casino industry, creating the first online casino software in 1994 and creating mobile casino slots as early as 2004. They've created a number of unique slots in their time, and we look forward to seeing what they can create in the future. They also have one of the largest Progressive Jackpot payouts in the world, having paid out over 1.2 billion in their history. Looking for a brilliant online slot from the innovative names at Microgaming? Check out 9 Masks of Fire.


NetEnt Entertainment is one of the top online casino slot providers in the United Kingdom. A large part of their success is their fantastic release of the Starburst slot. Starburst is one of the most successful slot games in the world today. However, NetEnt isn't settled with just one of the most popular games globally, as their collaborations with Red Tiger Gaming have proven to be some of the best games they have ever created.

Looking for more games from NetEnt? Check out the fantastic Gonzo's Quest slot.

Nolimit City

Nolimit City, founded in 2013, are one of the youngest providers at 21.co.uk. However, the quality of their games has to be seen to be believed. Their team has years of experience and utilise every aspect of a game to their advantage. A good example is the Deadwood online slot, their first game on our site. This game oozes quality and is a slot we recommend to all players.

Not played a Nolimit City slot yet? Take a look at the Book of Shadows slot today.

Play'n GO

Founded in 1997, Play'n GO has grown from a "small group of computer geeks" to one of the best slot game providers in the world today. They strive to provide players with "entertaining gaming without the hassle," meaning that if you're looking for a complex game style, you're probably looking at the wrong provider. However, if you're looking for a simplistic style with tonnes of winning potential and playability, that definitely fits Play'n GO slots.

Looking to play a Play'n GO slot? You could try Book of Dead slot, which has been popular in both land and online casinos for over 10 years.

Pragmatic Play

Pragmatic Play is one of the most popular online slot providers in the world today, and rightfully so, as their games are of the highest quality, and all of their new releases have unique features that make each game playable in their own right. If you're new to online slots, then we definitely recommend checking out Pragmatic Play slots when you next get the opportunity. Pragmatic Play has released dozens of fantastic slots in the last few years, but the one that stands out the most to us is the fantastic Great Rhino MEGAWAYS.

Realistic Gaming

Realistic Gaming is a slot provider that has a primary focus on creating fantastic gameplay and unique games at every opportunity. To acknowledge this, you simply need to look at any of their games. Don't be fooled by the graphics; each game has unique features and its own opportunities to land wins.

Looking for a unique online slot to play today? Be sure to check out the Duplicats online slot for a classic example of how Realistic Gaming thrive.

Red Tiger

Despite being founded in 2014, Red Tiger Gaming is one of the new giants of the online gaming industry, and we believe that they're only going to get better in the future. After their merge with NetEnt, they began to add their own twist on some of NetEnt's greatest creations, and it is clear to see that the best of both worlds have come together and are progressing together. Their slots tend to come with very unique themes, with The Greatest Train Robbery slot a perfect example of that. If you're looking for Red Tiger slots that contain a plethora of winning potential and a unique theme behind it, then we fully recommend checking out the Vault of Anubis slot.

Relax Gaming

Relax Gaming is one of the few providers on 21.co.uk who dabble with a bit of live casino, slots and casino table games. They have their own variations of both online roulette and online blackjack alongside some of our top online slots. One thing is for sure with Relax Gaming games: it doesn’t matter what area of the casino they look to master; their games are always of high quality.

SG Digital

SG Digital are a major part of the Scientific Gaming group that covers a large part of online casino and other gambling methods. So, you can guarantee that with a wealth of experience at their fingertips, their slots provide players with a fantastic gaming experience or something completely different to what you can find elsewhere.

Slingo Originals

Slingo games are some of the most unique online slots in the world today as they combine the brilliance of slots and bingo to create one collaborative game. Players begin with a bingo card and one reel of five. Spin the reel and reveal numbers to tick off your bingo card. These games usually have a fixed jackpot prize for each game, but some games will provide players with bonus rounds such as the free spins bonus instead.

Looking for the very best Slingo games to play today? We recommend checking out the brilliant Slingo Rainbow Riches, which brings the most popular online slot in the world and combines it with the brilliance of bingo.


Yggdrasil is well known for its Viking slots. Without a doubt, their "Vikings Go To" series is one of the most popular casino slot series in the world today. Each game comes with unique elements, and there are a multitude of different ways to play. You may not find many Yggdrasil slots on-site, but you can guarantee that all of their games are of high quality.

Looking for a Yggdrasil slot today but perhaps not looking to check out the Vikings saga? You could try The Royal Family slot for a truly royal experience.

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