🎰 Best Online Slot Sites UK

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100% Match Up To £100 Free Bonus + 10% Cashback For Life
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. Full T&C’s 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. Full T&C’s apply.
5.0 rating
100% Up To £123 + Monthly Tournaments
Full T&Cs Apply
#AD New players only, Maximum bonus is £123, Max bet with bonus is £5, No max cash out, Wagering is 50x - Skrill & Neteller excluded, Eligibility is restricted for suspected abuse. Full T&C’s apply.
#AD New players only, Maximum bonus is £123, Max bet with bonus is £5, No max cash out, Wagering is 50x - Skrill & Neteller excluded, Eligibility is restricted for suspected abuse. Full T&C’s apply.
4.5 rating
Up To £100 Free + 100 Extra Spins
Full T&Cs Apply
Terms and Conditions apply. Offer valid upon 4 deposits. New players only. 18+. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies.
Terms and Conditions apply. Offer valid upon 4 deposits. New players only. 18+. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies.
4.5 rating
Up To £100 Match-Bonus + 100 Lucky Spins
Full T&Cs Apply
Terms and Conditions apply. Offer valid upon 4 deposits. New players only. 18+. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies.
Terms and Conditions apply. Offer valid upon 4 deposits. New players only. 18+. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies.
5.0 rating
100% Up To £100 Bonus + 50 Free Spins
18+ Full T&Cs Apply New UK Players Only. £10 Min Deposit. £5 Max Bet using Bonus. Max Bonus £100. 40x Wagering Req. Issued Bonus valid for 14 days. 50 Spins credited instantly upon qualifying deposit on pre-selected game(s). Credited Free Spins valid for 72 hours. Max Free Spin winnings £100. Ewallets excluded. www.begambleaware.org
Spin the Mega Reel to win up to 500 free spins on Starburst.
Full T&Cs Apply
New players only, £10 min fund, £8 max win per 10 spins, max bonus conversion equal to lifetime deposits (up to £250) to real funds, 65x wagering requirements and full T&Cs apply.
New players only, £10 min fund, £8 max win per 10 spins, max bonus conversion equal to lifetime deposits (up to £250) to real funds, 65x wagering requirements and full T&Cs apply.
4.8 rating
121% First-Deposit Bonus up to £300
Full T&Cs Apply
18+. New players only. Min deposit £10. Bonus funds are 121% up to £300. Bonus funds are separate to cash funds and subject to 35x wagering requirement. Only bonus funds count towards wagering contribution. £5 bonus max bet. Bonus funds must be used within 30 days, spins within 10 days. Affordability checks apply. Terms Apply. BeGambleAware.org
18+. New players only. Min deposit £10. Bonus funds are 121% up to £300. Bonus funds are separate to cash funds and subject to 35x wagering requirement. Only bonus funds count towards wagering contribution. £5 bonus max bet. Bonus funds must be used within 30 days, spins within 10 days. Affordability checks apply. Terms Apply. BeGambleAware.org
4.8 rating
100% Deposit-Match Bonus Up To £50
Full T&Cs Apply
Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 30x Deposit Plus Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Spins must be used and/or Bonus must be claimed before using deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.
18+. T&C's Apply. BeGambleaware.org. Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 30x Deposit Plus Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Spins must be used and/or Bonus must be claimed before using deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.

At OnlineGaming4u, our online slots guide has been one of the most consistent and reliable resources in the UK for all things slots. We assist players in finding the best online slot sites to play at for free. With expert recommendations for slot software providers and top games.

Our team is constantly striving to build the biggest database of sites for video slots, along with game videos and strategies, in order for players to maximise their winnings and take their experience to the next level.

Ultimately, we help players keep up to date with the congested world of slots to make finding top sites to play at easier and straight-forward

In fact, we have a dedicated slots team that are avid slot machine enthusiasts and are always keen to find exciting sites to play the latest game releases at.

What’s more, all of the top slot sites and games that we recommend are tried and tested to ensure that they can be trusted by our visitors and that the operator offers the best possible fair gaming experience.

So whether you are looking for slots games with the highest RTP to increase your chances of winning, or progressive jackpots for that huge win, be sure to check out our slot site recommendations and see where other slots fans are playing.

Play today at real money slot sites

Real Money SlotsOur team of slot experts looks to update our slot pages on a regular basis, ensuring we cover all the latest and best slot sites for UK players, including new entrants to the market.

In addition, slot bonuses are a particular area of interest, with over five different types of slot bonus available at real money sites, including welcome offers, free spins, bonus spins, no deposit deals and deposit-match promotions.

As slots fans ourselves, we are constantly online researching, playing and testing any new slots site that pops up on the UK scene.

When we find a site that grabs our attention, we then put the provider under a stringent testing process to test and vet it before adding it to our rankings and giving our visitors a new recommendation.

Although real money slot-machines have been around for decades, playing video slots online and on mobile devices has become the norm for many players all around the world, including in the very competitive UK market, making it one of the most congested and lucrative.

Popular slots websites for UK players – Tried and tested

Every day, online gambling operators work closely with software developers across the globe to bring more slot games to the forefront, and introduce players to new game releases on a regular basis.

This helps maintain the sites reputable status and ensures that it remains on top of the competition as a leading provider.

Games are sources by casinos from some of the most active slot game developers in the iGaming industry, including Pragmatic Play, Red Tiger, NetEnt, BGaming, Wazdan and Yggdrasil Gaming, all of which supply our slot sites with new titles regularly.

One of the core reasons why some slot sites are more popular than others, is due to the fact that they provide free slots to play alongside their real-money offering. This gives players the chance to play games for free without any risk, and try out new games before wagering.

Why modern online slot sites are in high demand

Modern Online SlotsToday’s slot games primarily consist of 3 or 5 reel slot machines with multiple paylines.

Older games tend to have 3 reels and 1 to 5 paylines, whereas newer slot games can have as many as 10+ reels and up to 50 paylines on average.

In fact, some titles, particularly those that are built on the Megaways mechanic, offer up to 117,649 ways to win!

These games offer some of the biggest rewards and win-potential in the business, especially games that are part of progressive jackpot slots.

Progressive games often provide a minimum of £1,000 win, up to anything between £100k and £1million!

When we look at the slots world from the inside, we see hundreds of UK providers vying for business and looking for ways to get the edge on their competitors through the use of unique games, thrilling mechanics and quirky themes.

Although a huge percentage of custom oftens comes from the sites that can afford the biggest advertising campaign, you can use comparison sites to your advantage and grab yourself some excellent bonus deals including free spins, welcome deposit-match bonuses and free-play games without financial risk.

At OnlineGaming4u, we are not pressured or influenced by any outside gaming company. So all our reviews are impartial and allow us to operate freely without forcing ads down your throat or trying the hard-sell!

In light of this, we understand that one of the main highlights of playing slots online is that it is fun and easy to win money without knowledge or skill. Therefore, we believe that you should receive the most impartial information on UK slot sites that puts your interests first.

Discover more slots casinos than ever before

Hand on heart, there has never been a better and more lucrative time to play slots at the various available sites.

So many games are now available to play for real money across an array of devices, which leaves you truly spoilt for choice.

Games such as Starburst, Family Guy, Rainbow Riches, Da Vinci Diamonds, Big Bass Bonanza, Book of Dead and Siberian Storm, are all big hitters in the slots world. All of which are part of a growing catalogue of thousands of games available to players that live in the United Kingdom.

Additionally, there is also a more flexible range of payment methods available that allow you greater control over deposits and faster cash-outs.

The most popular payment methods used at slots sites include; PayPal, Neteller, Skrill and of course Visa and MasterCard.

More over, some casinos even provide options for mobile players to pay using their phone credit or bill as a method of depositing, with winnings being withdrawn directly in to a bank account.

Online slot sites Vs Slot machines at land-based casinos – How they compare

One of the big selling points of slots is that they have huge lifespan.

Slot games are known for keeping players entertained for longer periods of time and have a lot to offer gamblers, with the biggest pros being huge payouts, jackpots, bonuses, convenience and free spins.

Take a look at the comparison chart below to see how they compare with traditional slot machine terminals:

Online SlotsSlot Machines
More convenientBetter atmosphere
Bigger selection of slotsWinnings paid instantly
More payment optionsSocial interaction
Higher RTP ratiosNudge and Hold features
Play anytime, anywherePlayed with physical cash
No waiting for other players
More slot bonuses

Advantages of playing at UK slot sites

UK Slot Site Advantages Do you find yourself constantly searching for the best slot sites?

The word best is crucial in slots because each player has their own opinion of what makes a good site.

Some people prefer a large collection of games, whereas others want regular free spins bonuses.

At OnlineGaming4u, our mission is to help you decide what criteria you are looking for and find you a site that tickles your fancy.

Broadly similar to their physical counterparts, online slots have a number of their own distinct advantages over tangible slots machines, and as a result they pull an ever broader demographic of gamers who might never otherwise consider playing at slot sites.

The most obvious advantage online slots has over slots in the physical environment is of course convenience, and local venue casinos can never rival the flexibility and freedom of gaming from home.

No matter what time of the day or night you choose to game, no matter if you’re on the move or doing many different things at once, online slots can fill that gap and provide you with the opportunity to enjoy responsible gaming from wherever you may be.

One of the major sticking points with gaming enthusiasts is that online slots offer more competitive prizes because they tend to be played by a larger number of gamers, and the house edge (RTP – the degree to which the machine is set to handicap players and as a result the percentage in profit the operator takes) is much lower in online than physical slots.

Slot jackpots and payouts – Bet small, win big

From major online gambling brands to smaller niche providers, the UK online slots market has truly blossomed. There is ample choice for those looking to bet and win big-money on a spin of the reels with progressive jackpots and huge payouts.

Often with better prizes and better prospects on offer, not to mention a broader choice of different games and themes, online slots are understandably becoming a solid draw for a number of online casino operators.

Best online slot games – GOAT (Greatest of all time) slots

Best GOAT Slot GamesFinding the best slots online is perhaps easier said than done, and most gamers will have their own opinions and feelings on the matter.

Fortunately, the internet is full of outlets for gamers and gambling fans to share their experiences on the best slots, so you can gather opinion from others that have already taken the plunge and avoid making their same mistakes.

While you might not definitively be able to proclaim the best online operator until you’ve played there yourself, taking heed of the views and ratings of others is perhaps the closest possible way of verifying the integrity of your choice.

Amongst some of the best UK slots operators are the large sites who have a big presence in both the online and the offline market.

Large high street bookmakers and online operators with a high media profile are usually considered to be fairly reputable, and at least safe places to play online.

That way, you can be sure that whatever the outcome, you’re playing a fair, honest game with providers that are interested in serving and retaining their customers.

While this isn’t a guarantee you’ll be playing the best the slots market has to offer, it is at least a guarantee of legitimacy to a certain extent, and will help you rest easy as you play out your slots gaming sessions.

Check out the table below to see the current GOAT slots, (greatest of all-time slots) and see how they fair-up with your own choices:

RankSlotDeveloperPaylinesMax BetVolatility (10)RTP (%)Win Potential (x Bet)
1StarburstNetEnt10 (Bothways)100296.09600
2Big Bass BonanzaReel Kingdom10250895.672100
3Rainbow RichesBarcrest20400595500
4Wolf GoldPragmatic Play25125696.015000
5Twin SpinNetEnt243 (Bothways)125796.551080
6BonanzaBTG11764950099626000
7CleopatraIGT201000595.710000
8Immortal RomanceMicrogaming24360596.8612150
9Primate KingRed Tiger3020994.683800
10Tomb RaiderMicrogaming15150495.22112500

Video slot volatility chart explained:

Online Slot Volatility Levels Chart

Best rated slot site software – Ranked from the top

Top Slot Site Software UKOver the past few years, the online slot landscape has evolved dramatically and the industry has been flooded with new software providers entering the scene.

With that said, this is hugely advantageous to UK players due to the increase in available slot games at new and leading sites.

In light of this, the team at OnlineGaming4u wanted to draw your attention to the current top-ranked software providers and provide more information about why this is important.

Firstly, almost every online casino gets its slots and other games from third-party software developers. These firms develop innovative games and lease them out through operator partnerships.

Secondly, the reason why casinos do this is because its easier and more efficient for them as a business, to focus their efforts elsewhere. If all they have to do is strike a deal with a software developer, they can have an influx of new games frequently without investing in game research or development.

Online slot gaming is now a super competitive market and there is a strong focus on creating new and exciting games, as well as enhancing existing titles.

However, not all developers work at the same pace and some companies struggle to keep up with demand from both players and the slot sites themselves.

For this reason, software developers are ranked based on a variety of factors that determine whether or not they have what it takes to be a major player.

In the table below, we’ve listed the top 10 ranked software developers of slots based on core credentials, including number of games, release frequency, longevity and active jurisdictions.

RankSoftwareGamesTop SlotActive Countries
1NetEnt370Starburst48
2Pragmatic Play365Sweet Bonanza47
3Red Tiger240Reel King Mega44
4Microgaming520Thunderstruck 247
5Barcrest85Rainbow Riches45
6Playtech600Buffalo Blitz48
7BTG70Bonanza47
8Blueprint Gaming265Fishin Frenzy Megaways45
9IGT270Cleopatra45
10Thunderkick60Esqueleto Explosivo 244

Discover bonuses and free spins and UK slot sites

Slot Bonuses and Free SpinsThe biggest advantage of playing slots at online casinos is the bonuses and free spins that are on offer.

In all honesty, most slot sites are the same when it comes to the promotions they run, but now and again a rare casino stands out for the deals they provide new players.

In an attempt to stand out from the crowd, modern casinos tend to focus on slot offers as part of a welcome bonus package that includes a combination of free bonus spins and money.

What’s more, online slot websites are adjusting their bonus terms so that they are more attractive to new players, including low or no wagering requirements, removing the cap on bonus winnings and no deposit offers with no-strings attached.

So it is worth noting that, unlike in previous years, players rarely got free money from an online casino with no restrictions. But due to the competitiveness of the market, players can now benefit from these new-age slot deals that allow you to keep what you win.

An example of a bonus with wagering requirements versus no wagering is that there is no required play-through amount to unlock winnings.

This means that, in the past, if you got a free £100 slot bonus with 10 x wagering, you would need to play through £1000 worth of bets before being able to cash-out.

However, with no wagering slots, you can keep 100% of your profit from any bonus funds or spins with no strings attached.

On the flip-side, it is worth paying attention to any less-restrictive terms and conditions attached to slot bonuses, such as expiry time or maximum bet per spin.

Furthermore, depending on the slots website you choose to play at, you may not be eligible for a bonus based on your chosen payment method. This is because not all slot bonuses are available with specific options for funding your casino account.

Below is a list the most popular payment methods used to play slots:

RankPaymentType
1Debit CardCard
2VisaCard
3MastercardCard
4Bank TransferDirect
5PayPalE-wallet
6NetellerE-wallet
7SkrillE-wallet
8Boku (Mobile)Mobile
9PaysafecardPrepaid card
10CoinsPaid (Crypto)Cryptocurrency Transfer

Best online slot sites FAQ


Is it difficult to play slots?
No. Online slots are amongst the easiest games to play online and do not require any skill. Simply select your stake and press spin to start playing. Be sure to take note of the individual rules and instructions for each game, including bonus symbols, multipliers and paylines.

What is a progressive jackpot slot?
Progressive jackpot slots are games that are part of a pooled prize-pot, usually across a network of slots, that increases with every bet. Each jackpot increases until one lucky player triggers a winning combination of symbols.

Where can I find the newest slots?
We add the newest slots to our website as soon as they are released in the UK. Be sure to check our news and games pages for new titles as they go live. We also offer a list of new slot sites that show you where to play.

What does slots RNG and RTP stand for?
All slots operate on a RNG, which stands for random number generator, an algorithm that determines the outcome of the game each time a player presses spin. RTP is short for return to player ratio and is the percentage out of 100% that a game will payout to a player on average if played continuously over a set period of time.

Which slot site pays out the most?
Every slot site pays out the same rate and offers the same payouts, as this is based on the slots that you play and whether or not you trigger a winning combination of symbols.

Can I win real money at slot sites?
Yes. If you are playing slots for real money then in the event of getting lucky, you will win money that you can keep or use to continue playing.

What are the best no deposit slots sites?
We list a number of no deposit slots sites on our website at OnlineGaming4u.com. However, we don’t dictate what site is the best and let you judge for yourself.

Can I get a slot bonus with every payment method?
No. Each slot bonus is different and specifies what selected payment methods are allowed to claim an offer. Most e-wallets will not be eligible for a free bonus on your first deposit. So always check the terms and conditions before you join. Since credit cards were banned for gambling in the UK, debit cards tend to be a safe bet when it comes to getting a bonus.

Do I have to use the same payment method for deposit and withdrawals?
Some online casinos require you to use the same payment method for your withdrawals as your deposit in order to combat money laundering activities. However, depending on how long you have been a customer, this rule may vary. Additionally, some slot sites allow you to split your withdrawal over multiple methods, providing that at least one of them is your original funding source.

Are withdrawal amounts limited at slot sites?
Yes. Most online slot casinos have a limit on the amount you can withdraw at any one time. Sometimes the cash-out amount is also limited to a maximum weekly withdrawal amount depending on how much you have won.