The Home for Slots Lovers – We Review the Best  Online Slots UK for You

If you need expert advice and guidance on anything do with playing online slots — whether it’s games, bonuses, or where to find the best overall gaming experience, then JustSlots has all you need to know. Here, our team of expert reviewers will give you fair, honest and transparent advice about the best games and sites to play.

This Week's Hot New Slot
Dark King Forbidden Riches

Dark King Forbidden Riches online slots game 2020 from NetEnt. Are NetEnt still Lord of the Slots? Why not play this latest release from them and see if it’s so?

Game of the Month
1 Million Megaways BC

A new online slot game released by Iron Dog Studio with help from Big Time Gaming and the 1X2 Network.

Casino of October 2020
The Sun Vegas

The Sun Vegas provides a wide variety of top-quality games with a large number of progressive jackpots.


More New Online Slots are Just One Click Away!

What You Can Find on JustSlots

We review all of the best UK slot sites

We understand that finding the best slot sites UK can be a difficult task. The members our team all devote a considerable amount of time to playing online slots, and we are always on the lookout for new and established sites that not only offer an enjoyable gaming experience, but also provide professional levels of customer service, a good range of payment options, and a quality mobile gaming platform as well.

Our aim in doing this is to share our experience and knowledge with fellow players, and so we are in the business of reviewing online slots UK sites so that you can save time, money and energy by not having to do all of this research for yourself.

Reviews written by online slots UK players

When we review an online casino, you can be sure that you are getting a real online slots player’s perspective, and that the information we include will be relevant, helpful and written from the point of view of the player.

We’re always fair, but we’re also honest, and so we highlight the best features of a site, as well as the areas in which we think they could improve. Reliability and integrity are our goals at JustSlots, and everything that we do is geared towards finding the very best casino site and online slots UK players can enjoy. We cover it all so that when you’re choosing a slots UK site at which to play, you’ll be able to make a fully informed decision. Online slots sites regularly change the structure of their bonuses, undertake a redesign, or change the supplier and range of their games, so we like to check back in at sites regularly to see what’s new, and to ensure that our reviews remain up-to-date and relevant.

Players Favorites – October 2020

Casino Bonus Let's Go!

Spend £20 & Get 110 Bonus Spins Terms & Conditions
Buzz Bingo Review
*18+. First depositors only. Deposit & Stake £20 on Midnight Wilds slot game: Get 110 Bonus Spins on Midnight Wilds slot at 5p (5 lines x 1p) per spin. Jackpot cannot be won when using free spins. Customers will also be eligible for existing standard sign up bonuses if they stake an additional £10 on Bingo, see T&Cs for details. £5 min. withdrawal on winnings. T&Cs apply. Please game responsibly and if you need further support, reach out to BeGambleAware for confidential help.

Always 10% Cashback No Strings Attached! Terms & Conditions
No Bonus Casino Review
*18+. New customer offer. Min Deposit, Wagering Requirements & Further Restrictions May Apply. See website for full terms and conditions. Please game responsibly and if you need further support, reach out to BeGambleAware for confidential help.

2,400 slots with daily promotion Terms & Conditions
Slots Million Review
Terms & Conditions

New Online Slot Sites on

Casino Bonus Let's Go!

100% Up to £100 + Always 10% Cashback Terms & Conditions
Race Casino Review
18+. New players only. 40x wagering requirement. Bonus valid for 30 days. Max bet £5 per spin. Offer not valid for Skrill or Neteller deposits. Cashbacks can only be claimed if the account balance is below £10. T&Cs Apply Please game responsibly and if you need further support, reach out to BeGambleAware for confidential help.

100% Bonus Up to £100 + 100 Free Spins* Terms & Conditions
Aspers Casino Review
*18+. New players only. Min deposit £20, Max bonus £100. 50x WR, 100 Free Spins - 10 batches of 10 Free Spins Daily - No WR - Max Win £10 per batch. T&Cs Apply Please game responsibly and if you need further support, reach out to BeGambleAware for confidential help.

2,400 slots with daily promotion Terms & Conditions
Slots Million Review
Terms & Conditions

JustSlots gives you honest reviews of the best slot games

As well as our reviews of slots UK sites, JustSlots also features comprehensive reviews of hundreds of individual slot games. We think this is invaluable advice, and as most players have a style of game that they prefer, we give our readers a detailed analysis of all the gameplay and special features in a game so that it’s quicker and easier to find the the sorts of slots that you like.

New online slot reviews

With so many new game producers coming into the market, this has also meant that new online slots are being released at a faster rate than we have ever seen before. Keeping up with what’s new and hot can be a daunting task, so we do what we can to lighten the load.

Our contacts and experience in the online gaming world mean that we get early notification of imminent game releases, and so can play and review them before just about anyone else. This makes JustSlots the most reliable and informed source for reviews of brand new slot games, enabling you to be ahead of the pack when it comes to new releases from both the major developers and the smaller, boutique producers as well. If you would like to know more about us, you can learn more here.

Slots from all producers

Just as our slot site reviews cover all operators, our game reviews look at the games produced by a whole range of developers. This includes the biggest names in the industry, such as Microgaming, NetEnt and Playtech, the emerging stars like Yggdrasil, Thunderkick, Quickspin and NextGen Gaming, plus a variety of smaller producers who are beginning to make their mark in the online gaming world.

While all game producers have a range of different games types in their collections, there are nevertheless styles and varieties of games in which each of the major developers excels. For instance, when it comes to progressive jackpot slots, Microgaming has the biggest network with the largest payouts, and its games like Mega Moolah regularly pay out jackpot wins worth millions of pounds. Playtech is generally considered to have the biggest and best range of superhero themed slots, producing a large number of games based on Marvel and DC Comics characters. NetEnt, on the other hand, is noted for its themed slots based around big names from the music industry, like Guns N’ Roses, as well as their innovative approach to visual design and gameplay.

Find the best UK slot games

Check out the list below that features reviews of some of our favourite online slots games. The list includes games in a variety of styles from a range of different producers, so no matter your gaming tastes, we are confident that you will be able to find a game you can enjoy.

We review the smaller game developers as well

However, we don’t limit ourselves to only reviewing slots by these major players, and we make a point of covering games by all producers, regardless of their size or reputation. Our aim is to find the best online slots games out there, and so we look at every possible slot title, no matter who has developed it.

Ideally, when you have read one of our slot game reviews, you should almost feel as though you have played the game yourself. That’s why we cover everything in our reviews, including the gameplay, the theme and design, the bonus rounds, the RTP and the range of coin sizes and wagers on offer.

We review every type of slot game

Our reviewing team also makes sure that our coverage includes slot games in all categories, so as to provide our readers with the most comprehensive guide possible. This means we review 3 reel slots, 5 reel slots, ways-to-win slots snd progressive jackpot slots, and highlight the best (and worst!) features of each.

We also like to make sure that games featuring all of the most popular online slots UK themes are covered. If you’re into games set in the ancient world, slots with a fantasy theme, games featuring superheroes, or slots based around smash hit TV shows or films, then JustSlots has what you’re looking for. Our reviewers’ tastes cover every possible angle, so matter where or when the slot games you prefer are set, you will find games in that category have been reviewed by a member of our team.

What is the gameplay like?

Fully understanding every aspect of the gameplay is crucial to being able to get the maximum amount of enjoyment out of an online slots game, so our game reviews cover this in great detail. For instance, our reviewers will go through each of the symbols, giving you their value and how they contribute to a win e.g., what the payout is for 3x, 4x or 5x of a particular symbol. We also describe what the symbols look like, and the contribution the design and artwork makes to the overall appearance and feel of the game.

In a themed slots game that is based on a film, TV show or video game, we will also give you the characters’ names who are featured on symbols, as well as the payout rates when you hit them on a line, and whether they trigger a bonus or a special feature.

We also go to some lengths to explain the paylines in every game that we review, and highlight any special features e.g., games where the payouts run right to left, as well as left to right, or games where the paylines are in unusual combinations, not just straight across or up and down. Knowing how the paylines work is crucial both to the enjoyment of a slot game as well as for getting the best value from your wagers, which is why we place so much emphasis on reviewing this aspect of a game.

Coin sizes and wagering

Related to this, we also include in our reviews all of the coin sizes on offer, including the minimum and maximum cost of spins, so that you can see in advance whether this is a game that is suited to your bankroll and your personal playing limits. Knowing how to bet is the best way to ensure that you are getting the best value from your wagers, and so our detailed analysis means that you can be sure that you’re always playing in the optimum way.

Slot game RTP

Importantly, we also provide you with information on each individual slot game’s RTP, which is the average amount a player can expect to receive back when playing a game for an extended period of time, and which is usually expressed as a percentage. Most of the online slots UK that we review will feature a RTP in excess of 95%, which is considerably better than you get when playing slots in a land-based casino or club (the only exception to this is progressive jackpot slots, where the lower-than-average RTP means bigger jackpot payouts).

We couple this with an assessment of a game’s volatility, so that you have a clear picture as to whether it’s going to be a style of game that suits you. Some players prefer a low volatility slot, with more regular payouts that are proportionally smaller, while others like games where the payouts don’t come as frequently but tend to be larger. Each approach has its merits, and in the end it is a matter of personal taste, but we think having this sort of information in advance makes it easier for players to choose which games to play.

Bonus rounds and free spin features

Bonus rounds and special features are an integral part of online slots gameplay, and so our reviews always examine these in detail. For instance, we look at how bonus spins are triggered, how free spin rounds operate, and the sort of payouts you can expect.

If a game has a special bonus feature, where you get taken to separate screens and a whole new game for instance, we give you a complete run down on how this aspect of the game is trigged and played, and what sort of wins are on offer.

All of this means that if you like games where there are many different elements to the gameplay, or you prefer a more straightforward, conventional sort of slot game, after reading our reviews you’ll be able to decide for yourself whether or not a particular game is for you.

Highest Free Spins Offers

Casino Bonus Free Spins Let's Go!

Spin the Wheel to Win Up to 777 Spins on Starburst Terms & Conditions
Vegas Spins Review
New players only. Valid until further notice. Min deposit £10 for 1 spin on Vegas Spins's Wheel. Wheel odds vary between prizes. Prizes on Vegas Spins’s wheel vary and include 777 Free Spins [FS] , £50 Games Bonus, 100 FS or 75,000 Coins. FS wins granted in Games Bonus [GB] after all FS used (FS valid for 3 days). GB valid on selected games only. Wagering requirements [WR]: 85x GB funds. WR vary by game. GB wins cap: £100 + initial bonus amount. UK: deposit balance can be withdrawn at any time. 18+.

Win Up to 500 Free Spins on Starburst Terms & Conditions
Great Britain Casino Review
* New players only. Min deposit £10, £8 max win per 10 spins. Max bonus conversion equal to lifetime deposits (up to £250). 65x wagering requirements and full T&Cs apply here. *18+ only. Please play responsibly.

Up to 500 free spins for Starburst Terms & Conditions
Incredible Spins Review
* New players only. Min deposit £10, £8 max win per 10 spins. Max bonus conversion equal to lifetime deposits (up to £250). 65x wagering requirements and full T&Cs apply here. *18+ only. Please play responsibly.
More Free Spins Offers

How to find the best UK slot bonuses

When you’re deciding whether or not to play at a slots UK site, the quality and value of the welcome bonus can often be the factor that makes the difference. Signup bonuses now come in a variety of forms and a range of values, and so determining which sort of offer is best going to suit you and your playing style can be difficult, particularly when there are so many to choose from.

We give you full and complete information on the signup bonuses at all of the sites we review so that you can decide which sort of bonus will make the most sense when you consider your bankroll, how often you play, and the type of games you like to play. As bonuses come in a variety of styles, we cover all the main types of signup offers available at our featured sites.

In addition, we make sure that we only recommend introductory offers that we think give players good value, in terms of deposit matches, bonus spins and, perhaps most importantly, the wagering requirement attached to the welcome bonus. As the team at JustSlots are all serious slots players, we know better than most the difference between a good value welcome bonus and one that doesn’t provide players with any real incentive to sign up, so you can be sure that any introductory offer that we feature will be worth your while to investigate further.

What are wagering requirements?

Almost all welcome bonus offers at the slot sites we feature here will come with wagering requirements, which you might also find referred to as the playthrough or clearing the bonus. In essence, the wagering requirement is the amount of money you have to wager before you can cash out any bonus money you receive, or any winnings you make when playing with bonus money.

When we discuss wagering requirements in our slot site reviews, this will be shown as a multiple e.g., 40x, 50x, etc. This is the number of times you have to wager the bonus sum you received before you can make a withdrawal (new players should be aware that this is the total amount you have to wager, not how much you have to lose, which is a common misconception).

As an example, if you get a £200 signup bonus that comes with a 40x playthrough requirement, you need to wager a total of £8,000 before you can cash out any of the £200 bonus or winnings made by playing with the bonus (40 x £200). If you make a withdrawal before you have wagered £8,000, you will forfeit any of the remaining bonus and not be able to continue playing with it. You will also not be able to continue playing with, or cash out, any of the winnings you made from the bonus sum.

In some cases, our review will state that the wagering requirement applies to the deposit + bonus. In this scenario, if you receive a 100% match bonus deposit of £100, you will have a £200 bankroll and the wagering requirement will apply to this total bankroll amount rather than just the bonus received. If this deal were to come with a 30x wagering requirement, for instance, you would have to wager a total of £6,000 (30 x £200) before you were able to withdraw any of the £100 bonus or winnings made playing with it.

It therefore pays to look closely at our review’s description of a welcome bonus, to be clear as to whether the playthrough applies to just the bonus, or to the deposit + bonus amount.

How do you meet the wagering requirement?

At our featured slots UK sites, you will find that different games will contribute to meeting the wagering requirement at different rates. In most cases, online slots will contribute to clearing the bonus at a rate of 1:1, which means that every £1 you wager on slots counts as £1 towards the playthrough. However, there can be exceptions to this — particular slot games, for instance, may only contribute at a lower rate, while it varies from site to site as to whether progressive jackpot slots make a contribution to the wagering requirement. We recommend that you read each site’s T&Cs before you sign up so you can be sure of its policy regarding slots and clearing the bonus.

You will also find that most other casino games do not help you to clear the bonus at a 1:1 rate. Again, the rates that games like blackjack, roulette, table poker and live dealer games will vary at each of our recommended slot sites, but we will always give you these details in our reviews. We also suggest checking out the T&Cs, so you have as clear a picture as possible.

Casino Bonus Wagering Let's Go!

£10 Bingo Bonus, 5 Free Bingo Tickets & 20 Free Spins Terms & Conditions
Dinky Bingo Review
*18+. First-time depositors only. Min deposit: £10. Max offer: £10 Bingo Bonus, 5 Free Bingo Tickets (on Big Bang) & 20 Free Spins (on a game of our choice). Bingo Bonus can be used in any room. Bingo Tickets and Free Spins are valid for 7 days. Bingo Bonus & Bingo Ticket winnings come with 4x wagering. Free Spins winnings are credited as bonus funds with 40x wagering and are capped at £2.00. Bingo Bonus win cap: £400 + the initial bonus amount. Wagering requirements vary by game. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & full T&Cs apply. Valid until further notice.

£30 bonus + 30 Fluffy Favourites spins Terms & Conditions
Mighty Jackpots Review
18+. New bingo players. Code BINGO is required for the Bonus and spins. Min Deposit £10. Max Bonus £30. Max Spins Fluffy Favourites. 5x Wagering 4x Conversion applies. Free Room available from the day after your first wager. T&Cs apply

Get the Ball Rolling. 50% Up to £100 Bonus + 25 Spins Terms & Conditions
10Bet Review
New Customers only; Min. deposit £15 (no Skrill/Neteller); Wager bonus 40x within 15 days; Max winnings = 10x bonus; Free spins validity: 7 days; Free spins max. winnings = £100. Stake contribution as per eligible games; See full terms; Terms apply; 18+
Find more Low Wagering Slot Sites

What sorts of welcome bonus do our sites feature?

There are a range of different signup offers available at our recommended online slots UK sites.

No deposit free spins bonus

This is a form of bonus that is increasingly being offered at UK online casinos, and it very often comes paired with a deposit match welcome bonus as well. With a no deposit bonus, you receive a small bonus, usually in the form of free spins, when you sign up and register for a new player account, but without being required to make any deposit (although you may nevertheless be asked to provide debit card details when you register).

Once you complete the sign up process, you will be given a small number of free spins (usually somewhere between 5 and 20), which can be played on a specific slot game (or games). The winnings from these spins will be credited to your bonus account, and once you go on to make a first deposit into your real money account, you can continue playing with these winnings. However, you should be aware that any further winnings will then be subject to wagering requirements.

Deposit match bonus

The majority of the slots UK sites that we recommend offer a deposit match bonus as a signup deal. This can take several forms — it can feature a single deposit match, multiple matches on your first three, four or five deposits, and in some cases it will also include bonus spins as part of the deal.

With a match bonus, your deposit(s) will be matched by the casino in order to increase the size of your initial bankroll. In the case of a single deposit match, it will usually be 100%, which effectively doubles the size of your bankroll (in some instances, this first match may be worth as much as 200%).

In this sort of deal there will be an upper limit as to how much you can receive as a bonus, and in our reviews we will generally express this as “100% deposit match bonus up to £100”. There will also be a minimum amount that you have to deposit in order to be able to claim a bonus (usually between £10 to £20).

When you receive match bonuses on multiple deposits, the rate applied after the first one will generally be less than 100%, although the maximum amount you can receive will generally be greater than the amount you can claim with your first deposit. In our reviews of these sorts of welcome bonus offers, we will give you the overall match rate you receive across all of the deposits, and this will usually work out to be somewhere between 30% and 50%.

With a deposit match bonus, there will be wagering requirements applied either to the bonus sum alone, or to your deposit combined with the bonus. At our recommended slots UK sites, the playthrough will range from 30x up to as much as 60x.

Free spin bonuses

In most cases, free spins on signup will usually be offered in conjunction with a deposit match rather than as a standalone deal. You will also find that in our reviews, we tend to call them bonus spins as opposed to free spins, as a result of the requirements of the UK Gambling Commission in regard to online gambling advertising and promotion.

Our reviews will usually describe this sort of signup offer along the lines of “100% deposit match + 50 bonus spins”. Most of these sorts of deals give you bonus spins on a specific slot game or games, and any winnings from the spins will be subject to the playthrough requirements of the site.

Other types of bonuses

Our online slots site reviews also feature details of the other types of bonuses you can receive once you have signed up as a player.

For instance, reload bonuses are a popular way of incentivising players. Slot sites will often give regular players a match bonus when you make a deposit on a particular day of the week, for instance, or during special promotions. These sorts of match bonuses will generally be around 25% – 50%, although they can sometimes be worth 100%.

A form of bonus that was originally made popular at sports betting sites but has now been introduced to the online casino world is the cashback bonus. The way this sort of deal operates is that when you make a deposit on a particular day, or make a deposit and then play a specific game, you receive a proportion of your losses back in the form of a cash back bonus. An example of such a deal might be that if you make a deposit of £50 during the promotion, you get 50% of your losses back in the form of cash credited to your bonus account.

The refer-a-friend bonus is also available at many of our sites, although it is not offered now as regularly as it once was. With this sort of bonus, when you invite a friend to join the site (usually via a personalised invitation or link) and they then register and make a first deposit, then both of you are rewarded with a bonus. This will usually be worth anywhere up to £50, and will have a playthrough requirement attached.

If you play regularly and have a large bankroll, then you can usually pick up a range of VIP and high roller bonuses. In essence, the more you play and wager, the greater the potential rewards you can receive. Most of the slot sites that we feature here give VIPs special treatment in terms of personal account mangers and invitations to take part in exclusive events, as well as a host of other advantages, like regular matches on deposits and bonus spins offers.

A Safe and Secure Gaming Experience

Alongside the quality and range of the games on offer, our view is that being able to play safely is an essential part of a positive gaming experience. This is why all of the sites that we recommend are run by reputable operators and have the appropriate regulation and accreditation in place. This ensures that you can play with confidence, secure in the knowledge that games are being operated fairly, that your personal information is being stored securely, and that you have access to redress should there be a problem with how a casino conducts itself.

UK Gambling Commission licensing and regulation

Our featured slot sites are all licensed by the UK Gambling Commission, the government body that oversees all forms of online gambling. The UKGC has a number of regulations in place as to how online casinos operate and advertise, as well as the services they can offer players, and any site that is not regulated by the UKGC cannot accept players from the UK.

We only review fully accredited sites, but you can always check this information for yourself. Simply find the UKGC registration number of the site (usually located in the footer menu) and then go to the UKGC website, where you can enter these details to check whether a slot site’s credentials are genuine.

Gaming authority accreditation

We make sure that we only feature casinos here who operate out of jurisdictions that have a respected and creditable gaming authority that effectively regulates the activities and running of slots sites. The leading names in this field are the Malta Gaming Authority, the Guernsey Casino Gambling Control Commission, and the Alderney Gambling Control Commission, and the majority of our recommended sites operate from these jurisdictions (although there are other places that similarly provide adequate supervision and control).

The role of these gaming authorities is to ensure that sites operate fairly, that they are solvent, and that they respect players’ privacy and personal information, which is why we will only recommend to slots UK players sites that are regulated by these organisations.

Tested and audited games

The games at our recommended UK slot sites will also be tested and audited by a third party agency who specialises in the fair operation of online gaming. These independent agencies, such as eCogra, IGL and TST, test that the random number generators (RNGs) on games are operating fairly, and they publish this information, along with details of the overall RTP rates of categories of games e.g., online slots, table games, video poker, etc.

In addition, we only recommend sites where this information is easily accessible by players, so you can verify for yourself how recently the games at a site were tested, and what the results of the latest audit were.

Payment methods

An important element in determining whether or not a site is safe to play at is the range and type of payment methods that they offer. On the whole, we tend to prefer sites where you can make deposits and withdrawals using a variety of methods other than debit cards and direct bank transfer. Instead, we will generally recommend casinos where you can use alternative methods of payment. These include PayPal, Pay by Phone and Boku.

We favour these types of payment method as they don’t require you to share or store your bank account or debit card details directly with a slots site, and so there is one less place online from where your information can be hacked or stolen.

As PayPal is one of the biggest and longest established electronic payment providers, its online security is second to none, and so when you use PayPal you are at little risk of your private information falling into the wrong hands. There is also the added advantage that PayPal is one of the fastest ways around for withdrawing cash from an online casino, and your money is usually available in your PayPal account just hours after any request to cash out has been completed.

We also recommend Boku and Pay By Phone as secure payment methods, as you can make despots into your casino account and the amount is then added to your mobile phone bill or deducted from your pay-as-you-go balance. Again, this means that you are not required to share bank or debit card details with your slots site, or any other third parties. However, you do need to have an additional payment method like PayPal in place, as you can’t cash out from you casino account using Boku or Pay By Phone.

Guides, strategies and tips for online slots

We want to make the experience of playing online slots as enjoyable as possible, which is why we also feature here a range of strategies and tips to help you get the maximum enjoyment from the game as possible.

Our guides feature useful information for both newbies and experienced slots players. For instance, we explain in detail the different types of online slots games you can play, including the differences between 3 reel slots, 5 reel slots, ways-to-win slots and progressive jackpot slots. We look at examples of each type of game and explain how the different payline combinations impact on the gameplay you can experience.

As part of this, we also explain the RTP of the different varieties of slot games, as well as their expected volatility, and demonstrate how these combine to either increase or decrease the overall speed of gameplay and the rate of payouts.

We also go through the many different types of free spin rounds, bonus rounds and other special features that you will come across in online slots games, and examine which of these we think gives players the best value and gaming experience.

In addition, our reviewers also explore the range of wagering strategies and bankroll management techniques that we employ when playing different types of slots games, such as how many spins you can expect to play in an hour and what percentage of your bankroll you should aim to wager on any given spin. This advice will prove useful in helping you to make your bankroll last longer so that you get more playing time — and as a result, more opportunities to win.

Online gaming news

We are in the fortunate position of not only having a lot of experience in the online gaming industry, but also a huge range of great contacts. This means that we are always up to date with new developments, and are in the position of receiving the latest industry news before it reaches the general public.

That’s why JustSlots is such a great source of information about new casinos opening and the latest game releases, as well as more general news pertaining to online gaming, such as changes in legislation and regulations.

We would always recommend that you check back here regularly if you want to stay informed about what’s happening in the world of online gaming, and to get an early heads-up when there is a new game hitting the market or a new slots UK site coming online.