Best Slot Sites for 2020

Slot Sites are in an abundance now more than ever before and with so many different UK slots sites to choose from, it can be a tricky task to pick one which is right for you. The online slot machine has been a staple of many internet casinos over the years and as the gambling industry has changed and evolved over the years, slot games have retained their top spot place as the most popular game for punters to play.

Best UK Slot Sites for 2020


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100% Deposit Bonus

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1st time depositors only. Min Deposit £10. Max bonus £100. To withdraw bonus & related wins, wager x35 the amount of your Deposit+Bonus funds. 25 Free Spins [FS]. FS are valid on Reel Rush, for 7 days


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Get £150 Bonus

No Deposit Bonus

First 3 deposits only. Min dep £10 1st an 2nd deposit, min £20 3rd. Max cumulative bonus £150 + 150 spins. Bonus match amount varies per deposit. Spins awarded on one of four chosen games. 30 x wagering on deposit + bonus. 50 x on bonus spins. 10 Max bonus conversion. £5 max bonus stake. Full T&C's apply.


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Up to £850 welcome Bonus

No Deposit Bonus

New customers only. First deposit only. Min Deposit £50. 10% Cashback on losses up to £200 for 24 hours from the first deposit.


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£100 Deposit Bonus

No Deposit Bonus

Deposit min. £10. Applies to first deposit to Casino only. Max. bonus £100. 15x wagering (game weighting and max. bet rules apply) on deposit and bonus to make the bonus balance withdrawable. Time limits and T&Cs apply.


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Get £500 Bonus

No Deposit Bonus

New Customers only, +18, Verification needed for UK players. No deposit, Max bonus £5. Valid on: Shamrock N Roll, Mayan Marvels and Candy Swap. Wagering x100, Max winnings capped at £20 T&C's apply.


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Live Roulette & Blackjack 100% up to £100.

No Deposit Bonus

New customers only. First deposits only. Min deposit £10. Max 50 Bonus Spins on Selected Slots only. 2x Conversion. 20x Wagering. 20% Cashback on losses up to £200. for 48 hours from first deposit. T&Cs apply. Please play responsible | 18+


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£500 Bonus

No Deposit Bonus

New Customers Only. First Deposit only. Min Deposit £10. Max 50 bonus spins on selected slots only. 2x Conversion. 20x Wagering.


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£500 Bonus

No Deposit Bonus

First 5 deposits only. Min Dep £25. Max bonus £500 + 200 spins on Starburst. Selected slot games only. 5x Conversion. Wagering and T&Cs apply


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No Deposit Bonus

New players only. Min deposit £10. Max bonus £500 + 100 spins on Cleopatra. 40x wagering dep+bonus+spins. 4x conversion. 18+. T&Cs apply


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No Deposit Bonus

New customers only, Min Dep £10, Max Bonus £50, 200% Match, Selected Slot games only, 4x conversion, 40x wagering (dep + bonus).

Things you should consider when choosing an online slots site

When talking about online slots, you’ll find that these games have so much diversity, it’s pretty much down to your unique preference as to which games you’ll play and the sort of experience you’ll have.

Why play online slots?

When you’re playing at a slot site, you’ll be able to choose and play anything they have on offer, giving you the option to choose games based on graphics, gameplay, themes and progressive jackpots.

What sort of features can I expect from a slot site?

Choosing a strategy is the key to being successful when playing slot games. This is mainly down to you, the player, to decide but there are also some additional features you’ll find at casinos which will improve your overall experience.

Free Play Game Modes:

Having the chance to try a mobile slot game which has caught your eye for free is a great way of being able to tell whether you’d like to play the slot for real money. If you’ve already decided you like the game, being able to practice play for free will also help you hone your skills for when it’s time to play for real money.

Free Spins & Spins bonuses:

Slot sites will often entice players both new or existing by offering casino bonuses for you to claim. These could be in the form of free spins or even cash bonuses, which you can then use on some of your favourite online slots.

RTP/Slot Stats:

Each game has been designed with a certain return to player rate in place. The casino will normally not advertise this but there are ways of finding out how often the game pays out. This will give you a good indication of which games are worth playing for high volatility payouts and which games you might want to avoid.

Mobile Casinos:

Many casinos have now extended their site to become a mobile casino, whether you’re playing through your device’s browser or app. You might not get the full range of slots that the site provides on the mobile format, as not all games are optimised to work from on the small screen.

Our Recommended Slot Games

If you’ve made it this far you’d be well aware by this point that the range of video slots you can find at UK casino sites is hugely diverse. Choosing a game that reaches out and speaks to you can be difficult if you don’t know what you’re looking for. To help you decide whether or not you’d like a game before you try it for real money, we’ve reviewed all the top online slots, so you can read real opinions from real players with years of experience.

We are always looking to include more titles and are constantly adding new games to the list, so keep checking back regularly to find newer titles. With these tools and prior knowledge it should make finding the game you’re looking for easier, or at least give you an idea of something you want to play!

Different types of online slot games

When it comes to picking an online slot game, having variety is never a bad thing and it’s unsurprising that you feel spoilt for choice. Our advice is to have a game plan, so you have a great oversight of everything available.


When joining a new slot site, it’s important to be aware of the sort of software you’re likely to find. The best slot sites will often have a range of top-rated game developers providing software to their players. This gives you a chance to play a bigger selection of games spanning across different types of themes. Some casinos will only provide software by one developer, such as NetEnt. This might feel limiting, but it could mean that you’ll get to play new games early, before other sites.

Progressive Jackpots

Jackpot slots are casino games that have a bonus which stretches over multiple casinos and a small percentage of each wager goes towards the progressive jackpot amount. These slots entice players due to their high volatility, which means they pay out larger amounts but less frequently. Jackpot slots are usually more basic in terms of features and their aesthetics, but they are improving as of recently.

Video Slots

These games are the most common that you’re likely to find at top slot sites. These games have more regular payouts but aren’t nearly as much jackpot slot games. Video slots are associated with having many ways to win, often between 10 and 25, although some are known for having over 3000 different paylines. If it’s bonus features that you’re looking for, these can be found across hundreds of games, giving you the chance to play through incredible mini-games, win free spins bonuses. Video slots come in all shapes and sizes, you can find all sorts of themes, from underwater aquatic game styles, all the way to horror films and everything in between.

Classic Slots

When picturing a slot machine that you’d find in a brick and mortar casino, we think of that classic one-armed bandit and this is what plenty of classic slots are based on. By rule of thumb, you’ll find less paylines and a much simpler style of gameplay. So, if you’re tired of bonus rounds and over the top animations, these might be more up your street.

3D Slots

These types of slots are constantly pushing technology boundaries, providing scintillating bonus rounds and splendid animations which adds a level of immersion you won’t find on other games. 3D slots like Betsoft’s “It Came From Venus” and Netent’s “Gonzo’s Quest” are well worth checking out.

Fruit Machines

Back when physical slot machines were first introduced in casinos, they were typically themed around fruits, hence the name “Fruit Machine”. Although they aren’t nearly as popular as online slots, game developers still include fruit symbols. If you’re feeling nostalgic, games like Cash Stax and Call of Fruity will certainly deliver.

What else can I play?

Lots of players who enjoy online slots also try their hand at video poker. The best slot sites will have plenty of video poker titles available for you to partake in and there are plenty of different types to try from online roulette wheels to multi-hand blackjack.

When browsing casino games, if you cast your attention to the “other games” section. This section is full of games that don’t fit the bill of regular casino entries. Online scratchcards have risen in popularity in recent times, scratchcards are normally based on a popular slot game or theme for you to enjoy. Some top slot sites will even go as far as providing electric horse racing games for you to play, displaying that there truly are no barriers when it comes down to the types of games available.

Get the most out of your slot site experience

Tournaments might feel like a daunting idea; however, they are a superb way to enjoy your favourite slots and gain an even more competitive edge. Slot tournaments have thousands of players sometimes competing at the same time for the grand prize. Mr Green Casino & Cassava Casinos is one of the more prolific online slot sites who love putting on a good tournament for their players.

Finding the best slot sites UK

As we mentioned above, slot sites have hundreds upon hundreds of online slots to play. The best casinos will normally have games which are available across multiple sites. If the game crops up on a few different slot sites, you can be certain that it’s a great game and a quality casino to join.

In some cases, you might stumble upon a casino that has games you’ve either not seen before or aren’t available elsewhere. Some slot sites will have their own selection of games which are entirely unique. If this is the case, you can apply the following criteria to check whether the site is worth joining.

  • Ensure the site you’re choosing has a variety of jackpot games and video slots to play
  • Pick a slot site which has games with low stakes, high stakes and free play options.
  • Pick a casino with a selection of bonuses that you can then use on a selection of slots.
  • Netent, Microgaming and Nektan are all prolific slot game developers, these are great software providers to look out for when picking the best slot site.
  • Choosing a casino with muliple ways to pay is the key. Casinos which accept PayPal deposits are extremely likely to genuine and reliable because PayPal is one of the most trustworthy banking options. Boku is another recommended deposit option, as it enables you to deposit by phone bill.
  • Lastly, look for a site that has some progressive jackpots. Games with £100,000+ jackpots are certainly worth keeping your eye on.

How to play online slots

Due to the number of online slots there are, you might think some might be complicated to play but this usually isn’t the case. Slots are some of the easiest games to play and it’s just as simple as making a bet and spinning the reels. If that sounds too difficult, some games even have an autoplay feature, so the reels will simply spin by themselves for the allotted number of games you’ve decided.

Early slot machines – Where it all started

The earliest known record of a slot machine dates back to the 1880’s where these gambling games ran with mechanical spinners, on three reels. As these games began to gain attention from all over, you could argue that it was Charles Fey who basically sparked a gaming revolution which is still alive and bigger than ever, today.

Back in 1963 was the inception of the first ever digital slot. The creators of this important predecessor to online slot games was Money Honey and before you knew it, fruit machines took off and could be found in everywhere from pubs to police station break rooms, all over the United Kingdom.


Are slots fair?
All the sites on our list are fair places to enjoy your favourite gambling games. All the slots listed here are fair and have been checked and audited by the UK Gambling Commission to ensure the correct regulations.
What is the most popular slot game in the UK?
The United Kingdom has some incredible slot games to offer and there are a few fan favourites which you’ll find across various slot sites. Netent’s Starburst has been a fan favourite since it was released in 2012. Another developer to look out for is Microgaming. Their progressive jackpot network has been making a lot of noise and recently hit over a total €1Billion paid out in jackpots.
Is playing slots a good way to make money?
You can absolutely make money from playing slots. Most games have a return to player rate of 90% or above. This means in theory that for every £100 you spend; you get £90 or more back. This isn’t always the case and in some examples you might win a lot more, but on the other side of the coin, be left with much less.

Can I play online slots from my mobile?
Most slot sites offer a mobile option and this has helped online slots become accessible to a much wider audience as technology has moved forwards. All casinos, at Mobile Casino Kings offer a mobile platform where you can enjoy your favourite slots on your phone.
Which site is the best to play slots on in the UK?
There’s no simple answer to this question and can depend on what sort of experience the player is looking for themselves. We recommend you try out a couple of different sites to get a feel for what you like and you an find some player favourite casinos by scrolling up the page and looking at what we offer.
Are slots legal in the UK?
Slots are completely legal in the UK as long as you’re over the age of 18. The United Kingdom has quite relaxed laws when it comes to online gambling.

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