Best UK Online Slots – Complete Slots Sites Reviews 

Slots BetPlay comprises full reviews of the best UK online slots and complete evaluations of the casinos and slot sites where you can play them for real money. While deciding which website contains the best bonuses and payment methods, test the online slots for free here on Slots BetPlay.

Play the Best UK Online Slots

Big Bass Bonanza Slot Review
5.0/5
Big Bass Bonanza Slot Review
Book of Dead Slot Review
5.0/5
Book of Dead Slot Review
Dead or Alive 2 Slot Review
5.0/5
Dead or Alive 2 Slot Review
Hot Fiesta Slot Review
5.0/5
Hot Fiesta Slot Review
Immortal Romance Slot Review
5.0/5
Immortal Romance Slot Review
Jammin Jars 2 Slot Review
5.0/5
Jammin Jars 2 Slot Review
Starburst Slot Review
5.0/5
Starburst Slot Review
The Dog House Slot Review
5.0/5
The Dog House Slot Review

If you are not feeling too adventurous, it might be worth checking the best online slots in the UK. They are played at least a dozen times more often than other games on slots sites, and that is not without reason. Some of them have a high RTP, while others hide an impressive jackpot. Take a minute to discover more about them by reading the reviews of the best UK slots.

New UK Online Slots

Agent Jane Blonde Slot Review
4.0/5
Agent Jane Blonde Slot Review
Dr Wildshock Mad Loot Lab Slot Review
5.0/5
Dr Wildshock Mad Loot Lab Slot Review
Gates of Valhalla Slot Review
5.0/5
Gates of Valhalla Slot Review
Kiss Reels of Rock Slot Review
5.0/5
Kiss Reels of Rock Slot Review
Magician’s Secrets Slot Review
5.0/5
Magician’s Secrets Slot Review
The Bandit and the Baron Slot Review
5.0/5
The Bandit and the Baron Slot Review
Tombstone RIP Slot Review
5.0/5
Tombstone RIP Slot Review
True Grit Redemption Slot Review
5.0/5
True Grit Redemption Slot Review

The industry of online slots is evolving like never before, and that results in increasingly exciting innovations among the new slots in the UK. Check out the newest features and in-game bonuses, get impressed with the increasing number of lines, and we will not mention how the design turns every single game into a full experience.

The Best UK Slots Sites

After testing the free slots, you will want to find a reliable slot site to deposit, get your free spins, and play knowing your money is safe. With a mix of reputable and new UK slots sites, we have selected the 10 best sites to play online slots in the UK based on our own experience. After testing, playing, and withdrawing, our verdict includes:

Up to £200 + 100 Free Spins
5.0

T&C Apply 18+ only. Applies only to new depositing players. Min deposit £20. Wagering requirement apply 35x. Offer valid on first deposit. Full terms apply
100% bonus up to £200 + 11 WAGER-FREE SPINS
5.0

T&C Apply 18+ only. Applies only to new depositing players. Min deposit £20. Wagering requirement apply 35x. Offer valid on first deposit. Full terms apply
Welcome Bonus 100% Up to £100 + 200 Spins
5.0
18+ Full T&Cs Apply #AD New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 20 Spins on pre-selected games will be credited instantly + then 20 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Ewallets excluded.begambleaware.org
Welcome Package 100 Spins + Up to £200 Bonus
5.0
18+ T&C's Apply New Players only. 18+. Min First Deposit £10. Min Second and Third deposit: 20. Wagering requirement apply 35x. Offer valid for 72hr. Spins expire after 24hr. 100 spins includes 3 deposits. Please gamble responsibly. BeGambleAware.org
Welcome Bonus of 100% Up to £100
5.0
Full T&Cs apply #AD New customers only. Min deposit £20. Wagering 40x. Max bet £5 with bonus funds. 100% up to £100. Eligibility is restricted for abuse. No max cashout on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback applies to deposits where no bonus is included. Cashback is cash with no restrictions.
100% Up To £300 + 50 Bonus Spins
4.8
T&C Apply 18+. New players only. Min. deposit £20. Max. bonus bet £5. Bonus spins on selected game only and must be used within 72hrs. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire within 30 days. Offer is 100% bonus match up to £300 + 50 Bonus spins on your 1st deposit. Bonus funds are separate to cash funds & subject to wagering requirement (35x deposit + bonus). Only bonus funds contribute towards wagering requirement. Affordability checks apply. Terms apply. Please gamble responsibly. BeGambleAware.org.
100% Up to £100 + 300 Free Spins
4.8
18+ Full T&Cs Apply #AD New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Ewallets excluded.begambleaware.org
Welcome Package 100 Spins + Up to £200 Bonus
4.8
18+ T&C's Apply New Players only. 18+. Min Deposit £10. Wagering requirement apply 35x. Offer valid for 72hr. Spins expire after 24hr. 100 spins includes 3 deposits. Please gamble responsibly. BeGambleAware.org
100% Match Bonus Up to £300 + 150 Bonus Spins
4.5
T&C Apply 18+. New players only. One offer per player. Max bonus bet £5. Offer: 100% bonus match on 1st deposit + bonus spins. Value of bonus & number of spins depend on deposit amount: £20-£100: max £100 bonus + 150 spins on selected games; £101-£200: max £200 bonus + 100 spins on selected games; or £200+: max £300 bonus + 150 spins on eligible NetEnt Games. Winnings from spins credited as bonus and capped at £100. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute to wagering requirement. Bonus funds expire within 30 days; bonus spins within 72hrs. Affordability checks apply. Terms apply. Please gamble responsibly. BeGambleAware.org."
100% Welcome Bonus Up to £200 + 50 Bonus Spins
4.5
T&C Apply 18+. New players only. Min deposit £20. Max bonus bet £5. Bonus spins on selected game only and must be used within 72hrs. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire within 30 days. Offer is 100% bonus match up to £200 + 50 Bonus spins on your 1st deposit, and 50% bonus match up to £50 on your 2nd deposit. Bonus funds are separate to cash funds & subject to wagering requirement (35x deposit + bonus). Only bonus funds contribute towards wagering requirement. Affordability checks apply. Terms apply. Please gamble responsibly. BeGambleAware.org
Get 100% up to £100 + Always 10% cashback!
4.5
Full T&Cs apply #AD New customers only, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction.
100% Refund Bonus Up to £111 + 100 Extra Spins
4.5
Full T&Cs apply #AD New customers only, 18+, min deposit £10, wagering 60x for refund bonus, max bet £5 with bonus funds. Free Spins bonus has x40 wagering. 23 free spins on registration (max withdrawal is £100). 100% refund bonus up to £111 + 77 spins on 1st deposit. No max cash out on deposit offers. Eligibility is restricted for suspected abuse. Welcome bonus excluded for players depositing with Ecopayz, Skrill or Neteller.

Why Trust Slots BetPlay?

Slots BetPlay was created to become a sanctuary of fun and information on the best UK online slots. Every great game released by a reputable provider allowed to distribute slots in the United Kingdom will be found among our reviews. In order to make sure our readers and visitors are safe, we test the slots sites and games thoroughly and write a review of our full experience.

Since we honestly detail the pros and cons of the slots games and websites, you do not simply need to trust our word. Instead, you will understand how we reached our conclusion and make your own verdict.

How Do We Review the Best UK Online Slots?

Our team of evaluators here at Slots BetPlay are players like you, but with years of experience playing both online and at land-based casinos. Thanks to that knowledge, we have solid parameters to evaluate all the existing and new slots in the UK. The most important of them are detailed below, in case you are curious to know.

Providers of Slots in the UK

The provider is not an exclusion parameter since new regulated providers appear every year with high-quality games that are audited. However, some of the most reputable providers need no introduction, which means that we already know that their system and software are beyond suspicion – and we test their new games anyway.

Just out of example, some of the most reputable names you will see out there include:

  • NetEnt
  • Microgaming
  • Play’n Go
  • Big Time Gaming
  • IGT

New players will soon notice that the games produced by a specific provider always carry some specific characteristics. That is why every player grows fond of certain providers, and all their new releases are automatically their favourites.

Reels, Lines & Paylines

Reels and pay lines are other non-excluding parameters when it comes to the ranking of the best UK online slots. At least not in general, as they can be a good indication for players who specifically want many or just a few lines. Regular players know that the reels are the vertical columns that spin every round and that the pay lines are the number of possible combinations on those reels.


The horizontal lines are part of the game board. Their most common setup with reels is 5×3 (5 reels and 3 lines), followed by the classic 3×3 of most of the nostalgic slots. That layout does not say much about the game, only the number of symbols that might appear. It is the pay lines that dictate how crazy things can get.

Some games have 10 paylines, like the popular Book of Dead, while others can reach hundreds of thousands of paylines, e.g. Megaways slots provided by Big Time Gaming. It is even possible to reach over 10 million paylines in slot games with really big layouts, such as Jelly Reels. That only shows us how slot providers are improving the engine behind the games, and we include all those details in the reviews.

Stakes, Return to Player (RTP) & Hit Frequency

This is where the UK slots reviews get serious and determine if a game has good chances of resulting in a good return to players. First off, stakes can begin really low, like £0.10 or already start high at £10.00, which can clearly segregate players according to their available casino bankroll.

However, players are often looking for the RTP (Return to Player) and hit frequency stats when reading slots reviews. The former indicates how much the player would have back after an extremely long time playing, while the latter is its literal meaning. The higher the RTP and the hit frequency percentage, the better your chances of recovering your bets and even profiting.

On the other hand, relying solely on those stats is not a good approach for the UK online slots with progressive jackpots or many in-game bonuses. After all, those are rare occurrences and do not often impact the RTP. Take Mega Moolah by Microgaming as an example. It is responsible for the record millionaire jackpots paid to online players and has approximately 88% of RTP while the average is 96%.

Therefore, we recommend reading our UK online slots reviews for valuable insights on what each game brings to you.

Design, Audio & User Experience 

There are over two hundred slot providers out there, and not all of them are capable of developing great games, even among the ones who are reliable. Only the developers know the reason behind poor graphics in modern games, but the design, audio, and interface characteristics play an important role in deciding what to play.

Except for classic games that were revamped to adapt to the mobile experience with HTML5 technology and kept the nostalgic look, we tend to be picky when it comes to the design. Like us, you want to be looking at incredible graphics when you play. Although that does not interfere with the payback, there are many excellent games out there to compare the new ones with.

Finally, the user experience plays another important role in the UK online slots. After all, the gameplay should be easy to understand, and buttons cannot confuse the player. Reliable providers will not insert buttons that lead to misclick into spinning or activating buyable bonuses. Fortunately, all the best UK slots sites have mobile-friendly games at this point.

Mechanics & Bonus Features

Since the classic slots, which had only a couple of pay lines and a 3×3 layout without any bonuses, the newest releases of UK online slots are improving in terms of opportunities. Some of them are simple but interesting and come with some different types of Wild and free spin rounds that can be activated through Scatter. Play’n Go and NetEnt are two excellent providers that often innovate in Wild and Free Spin features.

Free Slots Online in the UK

Also called demo slots, the best online slots in the UK can be played for free here on Slots BetPlay. The demo version that we offer here is not modified in any way, except for the fictitious currency. In other words, you will have the same odds of playing the real version, and that is essential to determine whether a game is worth playing.

There are thousands of existing online slots, and using the prerogative of playing them for free for an unlimited amount of time can help you find your favourites. Along with the full details on each slot review that accompanies the demonstration version, you will find lists with the best slots sites and casinos in the UK that offer it. In some cases, we will also highlight free spins and deposit bonuses offered for new users.

Of course, there is no way of accruing winning when playing slots online for free. Therefore, it is recommended that players spend the minimum possible time enjoying the free UK online slots. Get to know how the game works, have some fun, and then move to the real fun on the best UK slots sites. That way, you will not get frustrated for achieving a fake jackpot when you could have won the real thing.

Among the reasons to at least try playing the UK slots for free, we highlight:

  • Experience the games in their entirety with real probabilities before using your money. 
  • Check out the slot design and animations to see if they please you. 
  • Read and get a sense of how the paytable and rules work. 
  • Try to activate bonuses to inspect their return. 
  • Get familiar with all the game mechanics. 
  • Experiment with the game on several different devices. 
  • Try the brand-new UK slots as soon as they are launched. 
  • No need to download the games.

How to Play Free Slots Games in the UK?

  1. Access one of the recommended slots by choosing one featured on this page or on our specific slot games web page and clicking on “Read Review”.
  2. Your game will be available there, in free mode only. Simply push the “Play” button and start having fun with the bet range of your preference.
  3. Alternatively, you can push the “Play Now” button to be redirected to the best UK slot site with that game. There, you will be able to test it for free while only a click away from depositing to enjoy the real version.

Age Verification for Playing Slots in the UK

Slot players from the United Kingdom are required to get through age verification when playing the demo slots or accessing the best slot sites. After the implementation of that obligatory verification by the Gambling Commission in May 2019, you will be required to validate your age. It will only take a few seconds and might require the verification of your UK mobile number as well.

Real Money Vs. Free Slots

Real money slots are a category that comprises all the slot games played with a money or bonus balance on one of the best UK slot sites. When playing for real money, players risk their funds in order to get the prizes that the slot offers. That is the only way to fully explore the winnings up to thousands of times the total bet, not to mention the progressive jackpots.

On the other hand, there are always new UK online slots, and betting on every single one of them would have a high cost. Also, it takes a while playing the games to actually have an idea of what they are capable of offering. In such cases, it is preferable to play the best UK online slots for free, at least for a few minutes. Since you cannot win any money from the demo version, choose a few favourite ones to play for money on the recommended sites.

Types of UK Online Slots

High-quality sites will allow you to filter their best online slots according to the provider and type. There are thousands of slots available online, and more genres are added now and then, thanks to the endless creativity of the best UK online slots providers. Therefore, it is important to know the main characteristics of each of the main genres found on online casinos.

Playing Mobile Slots in the UK

Unlike a couple of years ago, all the UK online slots are fully compatible with mobile devices at this point. They are all developed in HTML5, and even the classic titles like Cleopatra and Break Da Bank, from a time when slots were developed in Flash, are fully updated. Therefore, all the games found on the recommended sites can be considered mobile slots.

Jackpot Slots

Either with fixed or progressive jackpots, the winnings of this type of UK slot game are not limited to the best possible symbol combination. Through a special bonus, feature, or payline of specific symbols, the player achieves the highest possible prize in the game: the jackpot.

When it is a fixed jackpot UK online slot, the total prize is proportional to the bet size but never grows. That is different from progressive jackpot slots, in which case the total prize keeps rising with bets from players from all over the United Kingdom until someone gets lucky.

Aside from the already mentioned Mega Moolah, some of the most famous jackpot slots are Mega Fortune by NetEnt and Age of Gods by Playtech.

Video Slots Vs. Vegas Slots

Since every single one of the best UK online slots will remind people of Vegas, it may seem strange that there is a category named after the most popular casino city in the world. When you come across a Vegas Slots category, you will find online slots based on popular land-based machines, such as Zeus. The providers are either the original producers or licensed partners who keep their most important characteristics.

Classic Slots

A 3×3 layout, not many pay lines, and probably not a single free spin bonus in exchange for a huge jackpot. Those are common features of UK classic slots, easily found on the slot casino websites that we reviewed here on Slots BetPlay. Mega Joker is one of those, with a casino scenario that makes you feel like you are playing on a machine like in the old times.

Megaways

The Megaways system was developed and patented by Big Time Gaming, one of the top providers of UK online slots. Aside from generating random symbols for every spin, the Megaways software provides players with a random number of pay lines that range from hundreds to hundreds of thousands of them. The result is that players can rely on luck to get more combinations.

You will most probably find Megaways UK slots that are not from that provider because it currently licenses its system to other providers due to its popularity. Some excellent examples are Gorilla Gold Megaways by Blueprint and The Fruit Shop Megaways, a remake of a NetEnt popular slot.

Bonuses and Features in the UK Online Slots

The competitive world of online slots is favourable to UK players because it makes the games better every year. Providers spend a lot of time thinking of the next great feature or bonus to add to their creations, and players get to test them for free before actually betting. If you are new to it, take a moment to understand how each of them works.

Free Spins

One of the most intuitive bonuses added to games is the free spins. Of course, some of the best UK slots sites will offer free spins upon registration or deposit, but that is a different idea. The current best UK online slots count with in-game free spin bonuses that are activated through a certain combination or a lucky random activation.

It can be anything from a single free respin to dozens of them, and nothing comes out of the player’s money or bonus balances. Once activated, the free spins assume the same bet value that was used when they were triggered. Some of the slots let you accumulate free spins if you trigger them again, which can result in great winnings.

Multipliers

Another very intuitive in-game feature from the UK online slots, the multiplier, can be activated in a wide variety of ways, and each game might have a different mechanism. In essence, it multiplies the total winnings in a round or after a free spin bonus.

Stacked, Expanding & Fixed Wilds

Wilds are special symbols that replace all other symbols in slot combinations, except for Scatters normally. In order to make the online slots even more exciting, some providers, especially NetEnt, tend to create new ways of making Wilds appealing. For example, you will find the following types of Wild when playing the best UK online slots:

  • Fixed Wilds: Once a Fixed Wild appears, it remains on the screen, and only the other symbols are drawn again.
  • Expanding Wilds: Usually expanding vertically, this type of Wild covers a broader area and, consequently, results in better winnings.
  • Stacked Wilds: Stacked Wilds are columns of Wilds that can cover up to an entire reel at once.

Bonus Buy in the UK Online Slots

Some of the websites that offer UK online slots will have a “Bonus-Buy” category of games. Since it can be tiresome to wait for a bonus round like free spins, those slots will let you buy and instantly activate it, with no guarantees of winnings. In such cases, it is possible that you might have to pay up to 100x the bet to activate the bonus.

How Do We Review the Best UK Slots Sites?

Aside from reviewing the best UK online slots, we ensure to also cover the casino websites that offer them. In order to make reliable recommendations, we test and evaluate the online slots casinos ourselves. Among the parameters that we use, these are the most important ones:

  • Safety: It is obligatory for a UK online slots casino to have a Gambling Commission license and an authority to regulate its operations. Therefore, that is the first evaluated criterion in our reviews. We also check if they have an SSL certificate and their current reputation.
  • Games: The variety and quality of the online slots are essential for us to determine if it is worth registering on that website or not. If good enough, we try the games on both computer and mobile devices to test the user experience. The selection of providers usually shows us what we need to know from the first moment we look at the games page.
  • Payments: Deposits and withdrawals should be easy and fast for a UK online slot experience to be complete. Therefore, we check all the payment methods available for the United Kingdom, the withdrawal time, and the safety of those transfers.
  • Bonuses: From no deposit bonuses and free spins to promotions that multiply deposits, we evaluate the total given bonus and the terms and conditions involved.
  • Support: Even experienced slot players from the UK might require assistance now and then, and that is why we test the live chat for every reviewed casino.

New UK Slots Sites

Aside from featuring and reviewing the new slots in the UK, we keep an eye on the newest casinos with online slots. Reviewing them is somewhat a more difficult task as there is not enough feedback to ensure a recommendation. Even so, we do our best to make sure you get access to new and quality sites to play the best UK online slots.

Now that you know everything about the UK online slots, it is time to give them a try. Play the best titles for free and sign up to the casinos where you can find them to unlock your bonuses!

Author

  • Lucas understands how each feature in all 10,000+ slots available online can determine the quality of the gameplay. As an expert user who likes to go beyond the obvious and review online slots in terms of quality, he is the one players look for when they want to know if a slot is worth playing.