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There are loads of different games you can play at an online casino, from classics like roulette and blackjack, all the way through to new twists on old favourites. One game type stands out above all others though, as it is the most popular online gambling game by far – the online slot machine. These games are nearly always simple to play, and high in excitement, however perhaps their most important characteristic is this: they offer some of the biggest prizes around.

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Every casino has at least a few slots and, as you probably know, there are hundreds of casinos open to players in the UK. So, how are you supposed to cut through all the noise and marketing, and find the best slot site for you? It’s easy: just read through the rest of this page, where we’ll tell you about the best slot sites UK players can join. We won’t try to baffle you with claims or use technical jargon, but will instead tell you simply which sites are worth heading to.

We’ve not just listed the best sites below though – that would be far too easy! We’ve also gone into detail surrounding why an online casino might be considered one of the best, and how much real money you can win when you play at a casino on our list. So, once you’ve finished reading, you’ll have all the information you need to make an educated decision regarding where to play online slots in the UK!

How Are the Best Slot Sites Decided?

You might think that it’s taken us ages to identify the best UK slots sites and, well, you’d be completely right! We’ve spent days and months looking through the different best slots sites online, reviewing each one and making sure it’s perfect for UK players. There are a few things we look at when deciding on the best sites, and you can read about the most important ones below.

It goes without saying that the most important thing we look at is the slots on offer. We don’t just want to see loads of titles – although this is clearly important – but want to also see that the site offers some of the best slots around, including slots from big companies like NetEnt, Playtech and Microgaming. Essentially, we’re looking for quality and quantity. The best sites should also update their game selections regularly too, adding the latest titles to their portfolios as quickly as they possibly can.

Of course, we know that fans of slots also like to play other games as well, such as video poker, roulette and blackjack. This is why the best sites offer a wide range of games, which ensures they appeal to a wide range of different people. We also really like to see casinos with live casino games, as they are incredibly exciting and something all online gamblers should really enjoy playing.

Bonuses are also a really important thing to take into consideration, and we expect the best sites to offer loads of them to players. The welcome bonus is normally the most important, however, we also look closely at all other bonuses too, including any reload bonuses and free spins promotions. We also expect a great site to offer a decent loyalty scheme, to reward those who consistently play at the same site.

There’s also much more to consider, ranging from the site’s security through to the customer support on offer, and the banking options through to the overall look of the site. Once we’ve finished, we will have covered nearly everything, so all you’ll need to do is join the site in question and start spinning the reels! When you do, you could be just a few minutes away from winning an impressive jackpot!

What Slots Can I Play at the Best Sites?

The best sites will offer a large array of different slots, however, they can be broken down into three basic groups: video slots, classic slots and progressive jackpot slots. We’ll take a look at each type of slot in more detail below.

The most widespread type of slot is the video slot, and this makeup many of the best slots online. They are characterised by having animated reels, at least one fun bonus rounds, and multiple pay lines – some video slots have thousands of different pay lines on offer! There are absolutely loads of fantastic video slots for you to play, however some of the best includes:

  • Game of Thrones (Microgaming)
  • Planet of the Apes (NetEnt)
  • Guns N’ Roses (NetEnt)
  • Gladiator (Playtech)
  • Thunderstruck II (Microgaming)

The next slots to look at are classic slots, and these more closely resemble the fruit machines of old – simpler games with only a few pay lines and no real bonus features to mention. Some might find these slots to be incredibly boring, however, others yearn to play simple slots, without all the bells and whistles offered by the majority of slots nowadays. Some of the best classic slots are:

  • Sultan’s Fortune (Playtech)
  • Twin $pin (NetEnt)
  • Sizzling Hot (Novomatic)
  • Triple Red Hot 777 (IGT)
  • Pharaoh’s Fortune (Microgaming)

Finally, there are the progressive jackpot slot machines, and these are the ones that offer the biggest prizes. Some people have been lucky enough to win over £10,000,000 on a single spin, and the best progressive slots all have jackpots that regularly exceed the £5,000,000 mark. If you want to play one of these progressive jackpot games, some of the best are:

  • Mega Moolah (Microgaming)
  • Mega Fortune (NetEnt)
  • Age of the Gods (Playtech)
  • Major Millions (Microgaming)
  • Jackpot Giant (Playtech)

Regardless of the type of slot you prefer, you should be able to play for free before risking any of your own money. Free slots have all the same features as real money slots, including bonus round features, however, you won’t have to stake any of your own money. Don’t play for free for too long though, as you’re missing the opportunity to win a massive jackpot!

Can I Use Bonuses to Play Online Slots?

Bonuses are hugely important, and all the best online slots players use them as much as they possibly can. Bonuses aren’t good to use with some games, such as blackjack, as these games don’t count towards the rollover requirement, so you’ll never be able to withdraw any winnings. There’s no such problem with online slots though, as they count fully towards the rollover. So, when you get a bonus, we’d recommend using it to play slots with!

The most important bonus at most sites is the first deposit bonus, and this can nearly always be used to play slots. Welcome bonuses also often feature another type of bonus too, as they sometimes allow you to have a free spin or two on selected slot machines. These can be a fantastic way to play for free and learn how to play the game, while also still giving yourself the chance to gather some winnings at the same time – something you can’t do when you use the free play feature.

Online slots are also a great way to increase your loyalty points at a site, as the fast gameplay allows you to build up these points quickly. You can then exchange these points for a variety of different prizes, such as free bonus funds and enhanced promotions. Every site’s loyalty system works slightly differently though, so look at the terms and conditions before you start collecting points.

Are the Jackpots High at the Best Slots Sites?

The jackpots aren’t just high – they are sometimes astronomically huge! The biggest prizes are found at the progressive slots, with the two largest usually being Mega Moolah and Mega Fortune. The reason these jackpots get so high is simple: the jackpots keep rising as more and more people play them, and this happens until one lucky player hits the jackpot. All progressive slots will have a counter showing the current jackpot amount, so you should pick the one with the biggest jackpot at the moment.

When it comes to progressive jackpots, it doesn’t matter which site you play at, as the progressive jackpot game is linked across all sites. This means that you don’t have to head to the same casino as everyone else, but can instead head to the casino you think is best, and still have the chance to win a massive sum of money.

But how can you give yourself the best chance possible of winning a jackpot? Well, the best online casinos will publish the RTPs of each and every slot they offer, and these are expressed as a percentage. The higher the percentage, the more chance you’ve got of winning. So, if a slot has an RTP of 98%, you should expect to get back, on average, £98 for every £100 you spend. This means that this slot is clearly better than one with, for example, a 95% RTP. So, check out the RTPs before you start spinning the reels and watching the symbols land in place.

Can I Play Slots with a Mobile Device?

You certainly can – in fact, a site won’t make it onto our list of the top UK slots sites if it doesn’t have a really strong mobile offering. The best mobile slots Uk sites adapt the screen to fit any mobile device, and the mobile casino should also allow you to control everything using your device’s touchscreen. You won’t find quite as many slots on a mobile site, however, the selection should still be large, and encompass the three different types of slots mentioned further up this page.

Mobile gamblers should also find that they have access to the same features as desktop players. So, you’ll still be able to use your preferred payment method while gambling with your mobile, and will also be able to contact customer support. You’ll be able to play at nearly all mobile sites by accessing the site using your mobile browser, and some sites even offer a mobile casino app, which makes gambling with a mobile easier than ever. So, if you own a smartphone or tablet, you’ll definitely be able to pay at the best online casinos in the UK.


Are online slots completely fair?

When you play at a site we recommend, you can be sure that the slots are all completely fair. This is because we only recommend sites that have had their games verified by an external company, and that is also regulated by the UK Gambling Commission.

What is the best site for slots in the UK?

If you’re looking to find the best slots UK gamblers can play, there are many choices. If you scroll up this page though, you’ll see the site we currently think is the best. This list changes regularly though, so check back often!

How much money can I win playing slots?

This really depends on the slot in question. Progressive jackpots, such as those at Mega Moolah and Mega Fortune, can exceed £10,000,000 though and are won approximately once every 2 – 3 months. Video slots and classic slots will tell you how much the jackpot is on the paytable.

What is the UK’s most popular slot?

There are quite a few popular slots in the UK, however, the most popular is Mega Moolah – the slot from Microgaming with a massive progressive jackpot. Most games by Microgaming, NetEnt and Playtech are popular though – you’ll have to play a few to pick your favourite!

Is it legal to play online slots in the UK?

Yes, it is completely legal to play slots online in the UK, providing you are 18 years of age or more. The relaxed gambling laws in the UK are one of the main reasons why UK gamblers are some of the most avid in the world.


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