Gambling Deals

Best Slot Sites UK – 2019

Are you looking for the best UK slot sites? Well, look no further. Here at GamblingDeals.com, we search far and wide for the best slot sites online, finding you the online slot sites that are packed full of the most amazing slot games and welcome bonuses. To get started, check out our top slot sites list now. 1000s of slot games, sky-high jackpots, and the best slot sites are only a few clicks away. Rather hear more? Check out our slot sites guide to find out everything you need to know when it comes to joining, enjoying, and getting the most of your online slot sites experience.

Bonus Bonus £400

Spins Spins 50

Wagering

Bonus 35x Bonus

Casino Benefits
  • 100% Matched Bonus Up To £400
  • 50 Bonus Spins On Sign Up
  • 2nd Deposit 40% Match, 3rd Deposit 60% Match

Bonus Bonus £0

Spins Spins 50

Cashback Cashback 0%

Wagering

Spins 0x Spins

Bonus 0x Bonus

Casino Benefits
  • 50 Free Spins on 1st Deposit
  • Amazing Live Casino
  • Win Insane Prizes

Spins Spins 100

Cashback Cashback 10%

Wagering

Spins 10x Spins

Casino Benefits
  • 100 Bonus Spins On Book Of Dead
  • 10% Cashback Up To £1000 On Thursdays
  • Win Omnia Coins To Buy Real Items

Bonus Bonus £500

Spins Spins 50

Wagering

Spins 35x Spins

Bonus 35x Bonus

Casino Benefits
  • 100% Bonus Up To £500
  • 50 Bonus Spins On Sign Up
  • £2000 Bonus + 150 Spins On 2/3rd Deposit

Bonus Bonus £0

Spins Spins 80

Cashback Cashback 0%

Wagering

Spins 0x Spins

Bonus 0x Bonus

Casino Benefits
  • 80 Wager-Free Spins On Sign Up
  • 700 Slot Games Available
  • Amazing New Casino Site + Great UX

Bonus Bonus £250

Spins Spins 100

Cashback Cashback 0%

Wagering

Bonus 45x Bonus

Casino Benefits
  • £250 Welcome Bonus
  • 100 Free Spins
  • 400+ Games Available

Bonus Bonus £1000

Spins Spins 120

Cashback Cashback 0%

Wagering

Spins 40x Spins

Bonus 40x Bonus

Casino Benefits
  • £1000 Welcome Bonus
  • 120 Free Spins
  • Thousands Of Slot Games

Bonus Bonus £100

Spins Spins 200

Cashback Cashback 0%

Wagering

Spins 35x Spins

Bonus 35x Bonus

Casino Benefits
  • £100 Casino Bonus
  • 200 Free Spins On Sign Up
  • Exclusive Mr Green Slots And Games

Bonus Bonus £200

Spins Spins 200

Cashback Cashback 0%

Wagering

Bonus 35x Bonus

Casino Benefits
  • Deposit £10 Get £40 Casino Bonus
  • 1000s Slot Games On Offer
  • Leading Sports Betting Site

Bonus Bonus £100

Spins Spins 3

Cashback Cashback 5%

Wagering

Spins 25x Spins

Bonus 25x Bonus

Casino Benefits
  • 100% Up To £100 Bonus
  • 3 EPIC Wheel Spins
  • 5% Cashback Sat-Sun

Bonus Bonus £0

Spins Spins 50

Cashback Cashback 0%

Wagering

Spins 0x Spins

Bonus 0x Bonus

Casino Benefits
  • 50 Free Spins
  • No Wagering Requirements
  • 100s Of The Best Slot Games And Jackpots

Bonus Bonus £400

Spins Spins 100

Cashback Cashback 0%

Wagering

Bonus 35x Bonus

Casino Benefits
  • £400 Casino Welcome Bonus
  • 100 Free Spins On Sign Up
  • 1000s Slot Games, Live Dealer, Sports Betting

Bonus Bonus £100

Spins Spins 120

Cashback Cashback 0%

Wagering

Spins 30x Spins

Bonus 60x Bonus

Casino Benefits
  • 100% Bonus Up To £100
  • 120 Bonus Spins On Sign Up
  • 1000's Slot Games Available

Bonus Bonus £99

Spins Spins 99

Cashback Cashback 0%

Wagering

Spins 40x Spins

Bonus 40x Bonus

Casino Benefits
  • 50% Welcome Bonus Up To £222
  • 22 Free Spins On Sign Up
  • Lighting Fast Withdrawals

Bonus Bonus £100

Spins Spins 10

Cashback Cashback 10%

Wagering

Spins 0x Spins

Bonus 0x Bonus

Casino Benefits
  • Deposit £10 Get £100 Bingo Tickets
  • 10 Free Spins On Sign Up
  • Promo Code: IDOL

Bonus Bonus £100

Spins Spins 300

Wagering

Spins 40x Spins

Bonus 40x Bonus

Casino Benefits
  • 100% Welcome Bonus Up To £100
  • 300 Free Spins On Sign Up
  • 1300 Slot Games On Offer

Bonus Bonus £200

Spins Spins 100

Cashback Cashback 0%

Wagering

Bonus 35x Bonus

Casino Benefits
  • £200 Welcome Bonus
  • 100 Free Spins On Sign Up
  • Exclusive VIP Club For High Rollers

Bonus Bonus £100

Spins Spins 10

Wagering

Spins 0x Spins

Bonus 0x Bonus

Casino Benefits
  • Deposit £10 Get £100 Bingo Tickets
  • 10 Free Spins + No Wagering Requirements
  • Promo Code: DABBER

Bonus Bonus £150

Spins Spins 30

Cashback Cashback 0%

Wagering

Spins 35x Spins

Bonus 25x Bonus

Casino Benefits
  • 30 Energy Spins No Deposit Bonus
  • £150 Welcome Bonus + 50 Energy Spins
  • £150 Reload Bonus + 50 Energy Spins

Bonus Bonus £0

Spins Spins 0

Cashback Cashback 10%

Wagering

Spins 0x Spins

Bonus 0x Bonus

Casino Benefits
  • 10% Cashback Up To £500 Per Week
  • 1000's Of Slot Games
  • Earn Rolla Riches - VIP

Bonus Bonus £70

Spins Spins 10

Wagering

Spins 0x Spins

Bonus 0x Bonus

Casino Benefits
  • Deposit £10 Get £70 Bingo Tickets
  • 10 Free Spins On Sign Up
  • Promo Code: QUEEN

Bonus Bonus £100

Spins Spins 200

Cashback Cashback 0%

Wagering

Spins 20x Spins

Bonus 20x Bonus

Casino Benefits
  • 100% Welcome Bonus Up to £100
  • 200 Free Spins On Sign Up
  • Massive Progressive Jackpots

Bonus Bonus £200

Spins Spins 200

Cashback Cashback 0%

Wagering

Bonus 40x Bonus

Casino Benefits
  • 100% Welcome Bonus Up To £200
  • 200 Free Spins On Starburst Slots
  • 100s Of Slot Games

Bonus Bonus £300

Spins Spins 300

Cashback Cashback 0%

Wagering

Spins 40x Spins

Bonus 40x Bonus

Casino Benefits
  • 100% Bonus Up To £300
  • 300 Free Spins On Sign Up
  • Over 1000 Slot Games

What Do The Best Slot Sites Have In Common?

Certain things stand out at all of the best slot sites in the UK. Whether it is the welcome bonus on offer or the quality of their mobile site, slot sites that put you at the centre of their offering are the slot sites you should join. To make your life easy, we have compiled a list of all of the best traits UK slot sites have focused on to hit our top sites list. If you’re ready, let’s dive in and take a look. Otherwise, find new slot sites via our separate guide!

  • Leading slot bonuses for new and existing players – UK slots sites that focus on providing new and existing players with the best bonuses are well worth exploring further. We love to see slot sites offer matched deposit bonuses, as well as free spins both for new and existing players. All of our slot tables include the biggest slot bonuses online
  • Clear and concise Terms and Conditions – it’s one thing offering a great bonus, but making sure players can understand that bonus shows that a slot site can be trusted. The best slot sites leave nothing to the imagination and show you exactly what you’re getting when you sign up
  • The best online slot games – playing online slots made by the best software providers is the name of the game. We seek out the slot sites that offer slot games from leading game-makers like NetEnt, Microgaming, IGT, Playtech and more
  • Chance to win life-changing jackpots – it’s not just about playing the best games, you also want the chance to win big. The best online slot sites offer games with a wide range of jackpots, including those that run into the millions
  • Excellent customer service – we don’t like to see things go wrong for anyone, but if they do, we want to know that the UK slot site is ready to step in and help. The best sites will offer you several options when it comes to customer support; including live chat, email support and the ability to call up 24 hours a day
  • Mobile functionality – playing games at the best online slot sites is only fun if you can do it whenever you want. The best sites ensure that their slot games and jackpots are available when you are on mobile devices while out on the go
  • Wide range of deposit and withdrawal options – having the ability to deposit and withdraw funds using a wide range of payment options is the cherry on the top when it comes to enjoying the best slot sites. We expect to see traditional methods offered, like debit and credit card, alongside popular e-wallets like Paypal, Skrill, and Boku
  • Market-leading brand name  – it’s always good yo know that you can trust the site you’re playing on. Brands like LeoVegas, Casumo and Mr Green are brilliant slot sites that have established awesome brand reputations. This gives their confidence that they will get treated like kings every time they log on to play
  • Superior usability across their platforms – it’s not only mobile experience that we care about. We want to see that slot sites offer premium usability across every channel. That includes desktop, mobile, tablet and more
  • Security and licensing – it’s essential that slot sites are properly licensed. Here at GamblingDeals.com, we only show you sites that are licensed by one of the significant gambling commissions. When it comes to UK slot sites, we want to see that they hold a license with the UK Gambling Commission
  • Award-winning – finally, it’s nice to know that slot sites offer award-winning service. The best sites in the UK usually don’t take long to rack up the best awards in the industry

How do we find the best slot sites?

When it comes to finding the best online slot sites in the UK, it’s all about who you know. Finding the best slot bonuses via GamblingDeals.com ensures that you are clicking through to the best slot sites, with the best new and existing slot bonuses online. But how do you know you are getting access to the best sites?

We have a team of people here at GamblingDeals.com that spend every day searching the web for the best slot sites. Once we come across a site that we like the look of, we carry out proper due diligence to ensure that they meet the high standards that we set. The slot sites that make our top UK list are those who share a mix of the common attributes outlined above. And importantly, we only work with UK slot sites that are licensed by internationally renowned governing bodies, like the UKGC.

How do we rank and compare the best slot sites?

Ranking the best UK slot sites is not an easy process. Several important factors need to be taken into consideration before we can compile our top sites list. Here is a breakdown of the things we look at when comparing the best online slots and sites. 

Welcome bonuses and existing customer promotions

There are three different types of slot bonuses that you will find on UK slot sites. Sometimes the best sites will combine these bonuses into one easy to digest welcome package. However, some sites will base their entire proposition around one type of bonus – here’s what you need to know.

Matched Deposit Bonus

Matched deposit slot bonuses are one of the most common forms of welcome bonuses out there. When you sign up with slot sites, you will be offered a matched deposit bonus that looks something like this:

  • 100% Bonus Up To £300

This means that the UK slot site will match any funds you deposit up to the value of £300. For example, if you deposit £200 into the online slot, then you will get another £200 to play your favourite slot games. This means you have an initial betting balance of £400 to start your journey.

On top of this, some slot sites will give you even more funds to play with by increasing the matched percentage. Instead of giving you 100%, they will give you up to 300%. For example, you will be offered:

  • 300% Bonus Up To £300

In this example, if you were to deposit £200, then you will get £600 in total to play your favourite games. This is one of the best ways out there to get tonnes of free funds to bet in the best UK slot sites when you join.

Free Spins

Free spins are another great type of bonus that the best slot sites offer. When signing up for an account, you will notice that you can access free spins on certain slot games as a way for you to spin the reels without risking your own funds. For example, you might see something like:

  • 100% Bonus Up To £100 + 300 Free Spins On Book Of Ra

This type of bonus gets you 300 free spins on top of your matched deposit bonus when joining the slot site. In this instance, the free slot spins will only be available on the Book of Ra slot game. However, you will have 300 free spins to try your luck. That is absolute gold to any serious slot site player. UK sites will even give you free spin packages to use on any slot games across the site. These types of offers are certainly worth taking advantage of when you see them.

Wagering Requirements

When we evaluate the quality of a new player bonus, we always look at the wagering requirements that are stipulated. Wagering requirements are used by slot sites to ensure that bonus funds are not withdrawn from the site by new players before being used. However, some slot sites abuse their powers.

We are happy to see fair wagering requirements stipulated on new player bonuses as long as they are within reason and not designed to ensure that players have zero chance of walking away a winner when using their slots bonus.

Every slot bonus on GamblingDeals.com is shown alongside wagering requirements so that you can adequately assess the bonus before clicking through.

Slot game selection

The best slot sites are brilliant at compiling the best slot games online. They partner with all of the best game builders, including Microgaming, NetEnt, Playtech, and Novomatic. They ensure that their game sections include cult classics like Rainbow Riches, Age of Gods, and Starburst. Here at GamblingDeals.com, we don’t just review the best slot sites; we also carry out comprehensive reviews of all of the best slot games online. That gives us the unique ability to assess whether UK sites are bringing you the best games.

Slot Jackpots

It’s not only the best games that we care about seeing, and we want to know that you have access to the huge, life-changing slot jackpots. The best slot sites know that you are hunting for big payouts, that’s why they offer games which give you the chance to win big. Games like Mega Moolah pay out jackpots in the millions. What’s more, some sites offer games with progressive jackpots where the jackpot builds across many different sites. When we compile our list of the best UK sites, we always ensure that you’re clicking through to play chunky jackpots.

What are the other critical factors we assess at UK slot sites

The best slot sites also offer an abundance of benefits when it comes to customer experience, player safety, and deposit and withdrawal options. When our team reviews whether a slot site is ready to appear on our top sites list, we always make sure that our review looks at these critical factors.

How do slot sites work?

If you’re not sure how slot sites bring to market such amazing games, then let us clear things up. When you click through to join slot sites, you will notice that many of the slot games available on the site are similar to those on other leading slot sites. That’s because it is slot game makers who develop the slot games, they then lease them to slot sites which offer you the chance to play. What does this mean for you when you’re trying to find the best UK slot sites to join?

Well, firstly, you need to make sure that the site offers the games that you want to play. Some sites will only provide games made by one or two providers, while others will have a much broader range. What’s more, you will need to assess all of the other things that the site can bring. For example, do they have a wide range of deposit and withdrawal methods on offer? Do they have an excellent brand reputation with fantastic customer service? If so, then they’re worth checking out and signing up with. To find out which slot providers each site works with, check out our detailed slot site reviews.

Why should you join the best slot sites?

There are three big reasons why players play online slots. The first is that slots are a great way to play for life-changing jackpots. It’s not uncommon for players to win thousands (or even millions) of pounds when hitting slot jackpots. Some of the best slot sites online often have a range of games where the jackpot has run into the millions. While it’s not easy to hit the jackpot, the thrill of chasing life-changing money is unlike anything else.

Not only is it about chasing jackpots, but it’s also fun to play online slot games and grab great welcome bonuses. Here at GamblingDeals.com, we work with slot sites all day long to bring you the best slot bonuses and to connect you with the best slot games. In the last few years, there has been an explosion of slot games coming on to the market. New games like South Park Slots, Tomb Raider Slots, and Twin Spin are just a handful of great games that you can enjoy. What’s more, having the chance to grab a welcome bonus that provides you with the opportunity to play these games for free is a real buzz.

How much money can you win at UK slot sites?

Let’s provide some context for you. When it comes to the largest ever slot site wins, there are some massive numbers to shout about. The largest-ever jackpot win online happened on the famous Betway Casino. Jon Heywood was playing the popular Microgaming slot game, Mega Moolah. Little did he know that he was about to stumble onto the biggest ever slot sites jackpot win of all time. Jon bagged himself $20m in one single spin. Can you imagine the delight?

It’s not only Jon who has won big. Several players have become multimillionaires off the back of playing at popular slot sites. For example, one lucky Finish player who chose not to be named won 17m Euros off the end of a 25c slot spin when playing online with slot site, Paf Casino. His game of choice was the famous Mega Fortune, which was developed by award-winning developer NetEnt.

What are the best slot games available at UK slot sites?

There are some brilliant slot games available on the best UK slot sites. Some of our favourites are the games offering the biggest jackpots, like Mega Moolah and Mega Fortune. However, there’s so much more to shout about.

  • Cleopatra Slots – made by IGT, Cleopatra slots can be found on many of the best slot sites in the UK. Cleopatra has an RTP of 95.02% and allows you win huge multiples on your original stake. We love Cleopatra as it’s an old classic that reminds you of the Vegas slot halls of yesteryear
  • Monopoly Big Event – based on the famous board game Monopoly, this fantastic slot game follows the same format that you’d expect to play with your family at Christmas. The RTP rate is high at 95.02%, and there is a chance to cash out with 2000x your original stake. That’s why it’s one of our favourite slot sites game
  • Gonzo’s Quest – made by NetEnt, one of the best slot game builders in the business, Gonzo’s Quest allows players the chance to win 2,500x their stake. The game is based on the Mayan’s and offers players tonnes of features and chances to win. It’s certainly up there as one of the best games at UK sites

Can you join mobile slot sites?

Absolutely. When it comes to playing the best online slot sites, it’s vital that you can play on mobile. These days, if slot sites don’t offer you the chance to play via your mobile device, then they are not worth your time. The question instead is whether they provide you a mobile site or a dedicated mobile app. The best slot sites often allow their players the chance to download their mobile apps to play slot games on the go.

When you are looking to join your next online slot site, why not check out whether they offer a dedicated mobile app. If so, click through and get yourself signed up for an account before you download the mobile app. That way, when you click on to your iPhone or Android device to play, your mobile account will be ready and waiting for you. One of our favourite things about the best slot sites is that they always make it easy for players to play online slots while out and about and on the go.

Are slot sites safe to use?

Of course. Here at GamblingDeals.com, we only work with slot sites that are licensed by an internationally recognised regulatory body. In the UK, that body is called the UK Gambling Commission (UKGC). However, other leading institutions that slot sites are regulated by include the Malta Gaming Authority (MGA) and the Gibraltar Gambling Control (GGC) and others. Whenever you click through to join UK slot sites, or sites based overseas, make sure that they are regulated. That will ensure that they are operating in a trustworthy manner.

To ensure your safety, always click through to the best slot sites via GamblingDeals.com. That way, you will know that the slot site is adequately regulated and acting in above board.

Best slot sites UK summary

Whatever you are looking for when it comes to finding the best slot sites, make sure that you only play with those leading the market. That means sense checking their credentials against the main points we have pulled out in this review. Always make sure that the slot sites you join are trustworthy and safe to use. After that, ensure you get access to the best bonuses, market-leading games, and the very best slot jackpots available. If in doubt, check out our slot bonus tables now to find the best slot sites online. What are you waiting for?

Frequently Asked Questions

  • What are the best slot sites?

    Searching for slot sites is never easy. The best slot sites offer hundreds of leading slot games, free spins, great slot bonuses, amazing customer support, fast withdrawals, and brilliant gameplay. GamblingDeals.com compares the latest new slot sites and shows you the best slot bonuses on the market.

  • How do you sign up at slot sites?

    To sign up at the best slots sites, first find the slot sites that are right for you via GamblingDeals.com. Once you have selected your slot site, click through and create a new account. Once you’ve made the first deposit, you can spin the reels for real money.

  • What are the best online slots?

    Choosing the best online slots is down to personal preference. Some players prefer to chase huge progressive jackpots with high stakes, others prefer penny slots where spinning the reels for hours counts. To find the slot sites offering the best online slots check out our slot game guides and slot site reviews. There are 1m+ jackpots on offer.

  • What is the minimum deposit at UK slot sites?

    The minimum deposit levels at UK slot sites vary. The lowest we have seen is £1, with other slot sites offer £3, £5 and £10 options. The most common minimum deposit level is £10 which will guarantee that you will get a brilliant slot bonus.

  • Which slot sites offer free spins?

    There are loads of slot sites offering free spins welcome packages. This means that you will get free spins to use on your favourite online slots when you sign up. Find free spins slot offers via GamblingDeals.com today.

  • Are slot sites safe to use?

    Absolutely! An international governing body must regulate slot sites in order for the site to operate as an independent slot site. Here at GamblingDeals.com, we only work with the best slot sites that are regulated by international regulatory bodies like the UKGC (UK Gambling Commission). That means you’re 100% safe every time you play

  • How do you claim slot bonus offers?

    Claiming slot bonus offers is easy. Slot bonuses come in the form of matched deposit bonuses, free spins, no wagering bonus and more. Simply click through to the slot site and meet the minimum requirements of the slot bonus. As soon as you do, you’re betting balance will be credited with your slot bonus.

  • How do you play online slot games?

    Playing online slot games takes a bit of getting used to. We compare all of the best slot games on the market so that you can play with confidence. This includes how to play, how to win and what to look out for. Check out our slot guides now.

  • Can you play online slots on mobile?

    Yes! The best slot providers make all of their games accessible via mobile. All you need is an internet connection and a smartphone. It’s that simple!

  • What are the popular offers available on online slots?

    The best casino offers available on slots are free spin packages, matched deposit bonuses and no wagering bonuses. Free spin packages allow you to spin the reels for free at casinos, while matched deposit bonuses allow you to double or triple your first deposit. Look out for no wagering slot bonuses. No wagering bonuses mean that the bonus is not subject to wagering requirements. That means anything you win is yours to keep.

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