Best Paying Online Casino Slots for UK Players in 2021

If you’ve been looking for the best payout online slots UK has ever seen, look no further. This is the page that will tell you all about online slots with the best payouts and more. Here you’ll find the explanation of the term “best-paying slot”, as well as a list of games you can start playing right away.
Top 1
9.5

100% up to £100 + 10% Cashback (No Wagering)

T&C's Apply
  • New customers only
  • Min deposit £20
  • Wagering 35x
  • Max bet £5 with bonus funds
  • Max bonus is 100% up to £100
  • Welcome bonus excluded for players depositing with Skrill or Neteller
  • Cashback is cash with no restriction
  • Full T&C’s apply

  • Proven fair casino
  • PayPal payments
  • Great first deposit bonus

2
9.0

100% up to €/$/£100 +10% Cashback

T&C's Apply
  • 18+ New customers only.
  • Min deposit £10. Wagering 40x bonus.
  • Max bet £5 with bonus funds. 100% bonus up to £100.
  • Eligibility is restricted for suspected abuse.
  • No max cash out on deposit offers.
  • Welcome bonus excluded for players depositing with Skrill or Neteller.

  • Cachback 10% always
  • Hosted over 2000 games
  • Various banking options

3
leoveages casino
8.8

Welcome bonus £100 + 20 Bonus Spins

T&C's Apply
  • No deposit required & new players only.
  • Claim from “My Offers” within 3 days of registration & 3 day expiry.
  • 10 free spins worth £0.10 each on Book of Dead, winnings paid as cash.
  • New players only across two deposits.
  • Cash rewards: 7 days from registration to opt-in from “My Offers” page & each with 7 days wagering.
  • Deposit £10, £25 or £50 & wager 35x.
  • Only cash stakes qualify & wagering contributions vary.

  • Instant play casino
  • Hosted over 700 Netent games
  • Live dealer room available

Casino
Rating
Bonus
Features
OS
Play Now
4
8.6
Up to £50 bonus + 50 spins
T&C's Apply
  • 100% bonus on first deposit up to £50 plus 50 Free spins.
  • Free spins are playable on Starburst and will be credited in increments of 10 spins per day for 5 days following the first deposit.
  • Min. first deposit £20.
  • Max bonus £50.
  • Max bonus bet £5.
  • Max bonus cash-out £500.
  • Wagering requirement of 40x to cash out.
  • Game restrictions apply.
  • Optimised for mobile devices
  • Works with world-class game software companies
  • Fast withdrawals
5
8.5
150% Welcome Bonus
T&C's Apply
  • 18+
  • A £15 bonus will be awarded for every £10 deposited on your first purchase. 
  • The maximum bonus is £150.
  • The bonus is to be used within 7 days of qualification.
  • Only deposits made by players using a Debit Card
  • Live dealer game offering
  • iOS downloads available
  • £10 deposit casino
6
8.5
200% Match Bonus Up to €500 + 50 Free Spins On Your First Deposit
T&C's Apply

Terms apply. Please gamble responsibly. www.Gamblingtherapy.org

  • 18+ New Players Only.
  • 1 bonus offer per player.
  • Min. deposit €20. Max. bonus bet is €5.
  • Extra Spins on selected games only and must be used within 10 days.
  • Winnings from Extra Spins credited as bonus funds and capped at €20.
  • Bonus funds expire in 30 days, unused bonus funds will be removed.
  • Welcome Offer is 200% match up to €500 plus 50 free spins on your 1st deposit, 25% match up to €800 plus 25 free spins on your 2nd deposit, and 50% match up to €500 plus 20 free spins on your 3rd deposit.
  • Bonus funds are separate to Cash funds, and are subject to x40 wagering the total bonus money, deposit and Extra Spins.
  • Only bonus funds count towards wagering contribution.
  • Hosted over 1200 games
  • Worlds biggest jackpots
  • Premium quality type website
7
8.2
Deposit £10 Get 50 Sign Up Bonus Spins
T&C's Apply
  • 50 free spins on first deposit.
  • After your first deposit you may claim your 30 Extra Free Spins by visiting the Kicker Section.
  • Offer is only available for first time depositors.
  • Min deposit is £10.
  • 50 Free Spins on Book of Dead. (Spin Value: £0.10).
  • All wins paid in cash
  • Bonus With No Wagering Requirements
  • £10 minimum deposit
8
8.2
Up to £150 Welcome Bonus + 100 FS
T&C's Apply
  • 18+
  • New UK Customers only
  • Min deposit £10
  • 100% bonus up to £150
  • 15 Free Spins on Book of Dead spin value=£0.10 +85 Free Spins on Aloha Christmas spin value=£0.10
  • Min 35x wagering
  • Bonus code: NOVIXMAS100
  • Skrill & Neteller deposits Excluded
  • Bonus & Free Spins Valid for 30 days
  • Please gamble responsibly.
  • Over 1,000 Games
  • Perfect For VIP Players
  • Withdrawals are unlimited
9
8.0
100% Welcome Bonus up to £200 + 100 Extra Spins
T&C's Apply

Applies only to new depositing players.
Min deposit €10. 18+.
Wagering requirement apply 35x.
Offer valid for 24hr.
100 spins includes 3 deposit.

  • € 7000 per month of withdrawal limit
  • Different currencies
  • More than 500 games
10
8.0
£500 + 10% Cashback
T&C's Apply
  • 18+
  • Standard Welcome Bonus: New customers only.
  • Minimum deposit $/£/€20.
  • Maximum bonus $/£/€500.
  • Max Bonus win £150,
  • Wager 20x before withdrawing.
  • High Roller Welcome Bonus: New customers only.
  • Min deposit £10.
  • Fast withdrawal times - no fees
  • Instant play platform - no download needed
  • £20 minimum deposit
Table of content

    Best Payout Casinos

    Best Payout Casinos

    Fast Payout Casino

    Fast Payout Casino

    Low Wagering Casinos

    Low Wagering Casinos

    Best RTP Slots UK and Their Winning Chances

    Any player who has taken off on a journey to find slots with the best RTP can tell you how difficult that job can be. Furthermore, if you’re trying to discover which online game offers you the best chance of winning, you’ll soon be lost in so much information that you won’t know what hit you.

    So, before you even start looking for the game you can easily win at, you first have to learn what makes a slot the best in terms of payout.

    What Makes a Best Payout Slot?

    It’s no surprise that every player would rather choose the best paying online slots UK instead of the low-paying ones. However, for a game to be regarded as the best-paying, a few of its characteristics must be at the top level. These include:

    RTP

    RTP stands for “return to player.” It’s displayed in percentages, and it’s intended to show you how much a slot will give back to players in a certain period. For example, a slot with the 95% RTP will pay out $95 on every $100 you feed it with. Nevertheless, this won’t happen instantly, as these calculations are done based on thousands of rounds.

    Also, bear in mind that the outcome of slots depends on random number generators that have to make sure a particular machine is due to throw a payment randomly, so you can never know when it’s going to happen.

    Hit Frequency

    Hit frequency is another important thing that can tell you which slot machines pay the best. In essence, hit frequency is supposed to tell you how often a slot machine is likely to generate a winning combination compared to the losing one. Nevertheless, you shouldn’t rely solely on this feature when it comes to winning real cash, as hit frequency can form a winning combination, but the combination itself won’t always be the highest-paying one.

    For instance, you invest $2 per spin, and a winning combination appears on the grid saying that you’ve won $1. Although this is counted as a win, you’ll have $1 less in your account, and that won’t help your overall budget.

    Payouts

    Nowadays, you’ll often see online casinos posting information about their latest payouts. They’ll mostly let you know which game was played, how big the payout was, and which player took it home. However, this doesn’t always mean that you’ll win money playing that same slot game. Remember, slot outcomes are random, meaning that a single slot may reward two players in a row and then don’t pay out a dime for days.

    However, there’s one aspect of payouts you should concern yourself with, and that’s the speed. Whenever you can, go for casinos that offer instant payout slots so that you can withdraw your winnings right after they land on your account without any delays.

    Volatility

    Slot volatility, also known as variance, combines the frequency of winning and the size of the prizes. The two sides of this category you’ll come by are high volatility and low volatility slots. With the first one, you may not be seeing a winning combination on your screen that often, but once you do, it’ll be the one bringing in a huge prize. For the other one, you’ll be getting your payouts a lot more frequently, but they won’t be as big as those offered by high volatility slots.

    Best Payout Slots UK by Providers

    While the payout is believed to be random, online gambling experts on this topic will tell you that slots coming from selected software providers may tend to throw a win more often than the rest. Here are several game developers that top the list of the most rewarding online slots.

    NetEnt Slots

    Unless you’ve been living under a rock for years, you know that NetEnt has produced some of the best online games in the industry. Yet, the games coming from this provider aren’t only of the highest quality. They are also great in terms of payouts, which makes them very popular among casino players worldwide. Starburst and Gonzo’s Quest are two top-rated titles that have managed to stay on the top-list for years, and due to their great rewarding history, NETENT online casinos often use them in their bonuses.

    Microgaming Slots

    Microgaming is another software developing giant that created numerous top-notch titles. Some of the best picks from this content creator include Immortal Romance and Thunderstruck II, and they wouldn’t be so popular if they weren’t two of the best RTP online slots with a return rate of over 96%. However, what makes Microgaming casinos stand out from the competition is the Mega Moolah franchise, featuring several different titles that are even more rewarding than classic slots.

    Play’n GO Slots

    Play’n GO casinos also have some record-breaking titles to gloat over. One of them is the Book of Dead, which tells a story about Ancient Egypt and a famous book storing all the information about the dead. Other popular titles include games like Reactoonz and Fire Joker, and all of them fall under the category of the best payout slots online.

    Playtech Slots

    The game which made Playtech famous was Age of the Gods, featuring Greek mythology and available in almost every casino. Thanks to this creative title that appears to be quite generous, Playtech casinos have quickly made it to the top of this list of highest-paying slots providers. Not only will you have a chance to win more often, but the amount of money at stake might surprise you too.

    Top 1
    9.5

    100% up to £100 + 10% Cashback (No Wagering)

    T&C's Apply
    • New customers only
    • Min deposit £20
    • Wagering 35x
    • Max bet £5 with bonus funds
    • Max bonus is 100% up to £100
    • Welcome bonus excluded for players depositing with Skrill or Neteller
    • Cashback is cash with no restriction
    • Full T&C’s apply

    • Proven fair casino
    • PayPal payments
    • Great first deposit bonus

    2
    8.4

    Up To £100 Matched Bonus + 50 Free Spins on Starburst™

    T&C's Apply
    • New UK customers only.
    • Opt in required.
    • 1x per customer.
    • Min. £20 deposit.
    • 1st deposit only. Selected games only.
    • Max. Bonus £100 with 35x wagering
    • Free Spins and Bonus credited once deposit amount has been wagered on slots.
    • Bonus and Free Spins expire 7 days after issue.

    • Instant play platform - no download required
    • Native Apple and iOS apps available
    • Deposit £10 play with 50FS

    3
    mega casino logo
    8.1

    100% up to £50 or 100 FS on Book of Dead

    T&C's Apply
    • 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.

    • Unique selection of SkillOnNet slots
    • 24/7 assistance via live chat
    • Certified fair by iTech Labs

    Casino
    Rating
    Bonus
    Features
    OS
    Play Now
    4
    9.0
    £40 Welcome Bonus
    T&C's Apply
    • 18+ to register
    • New customers only
    • Min deposit £10
    • Wagering requirements: Casino 35x
    • Only one bonus can be used at a time.
    • Be gamble aware
    • Further T&C’s apply.
    • 15 progressive jackpot slots
    • Daily Slot Tournaments
    • Low minimum deposit
    5
    8.6
    Win up to 500 Free Spins
    T&C's Apply
    • 18+
    • New customers only. UK only.
    • Win up to 500 Free Spins from Mega Wheel on 1st deposit. 24-hour expiry.
    • Max bet £2.50, max spins win £8 per 10 spins,
    • Max Bonus win £150,
    • 65x wagering on winnings.
    • No Neteller/Skrill.
    • Min deposit £10.
    • Fast withdrawal times - no fees
    • Instant play casino - no download needed
    • £10 minimum deposit
    6
    8.5
    200% Welcome Bonus up to £500
    T&C's Apply
    • New players only
    • No Deposit Offer: Claim in 48 hrs
    • 14 day expiry
    • FP wins are credited as bonus and capped at £10, exc. JP win
    • 50x wagering
    • Deposit Bonus Offer: £20 min deposit
    • Valid for selected games
    • Bonus wins capped at £500
    • 30x wagering – req. vary by game
    • Bonus expires within 90 days
    • Withdrawal terms, No Deposit Offer terms & Deposit Bonus Offer terms apply.
    • Top-Notch Mobile Application
    • Average RTP across all games of 96%
    • Fair gaming certified through eCOGRA

    How to Find the Payout Percentage on Slot Machines

    As mentioned earlier, finding the highest payout online slots can be difficult, especially if you’re new to the world of online gaming. Still, there are a couple of tricks you can use to get this information.

    First off, if you have already chosen your perfect online casino, your answer may be hidden on the platform itself. Some casino sites include the payout percentage of their machines in their terms and conditions, and you can find it by going through the site’s by-laws.

    In case there’s nothing about the payout percentages in the casino’s T&C, you can check with customer support and hope they have some helpful information for you. Finally, if this doesn’t seem to work either, your last chance includes consulting the web by looking up the particular game you want to play.

    Importance of Variance in Slots

    If you’ve come this far without skipping any parts of the text, you must have spotted a brief mention of variance. As mentioned already, variance can also be called volatility, and it’s perhaps one of the most important things to know about payouts.

    Simply put, this is the factor that determines the size and frequency of your payouts, and you’ll most often come across games that are either on one or the other side of the fence.

    • Low variance games — When you play a game with low variance, you can expect payouts to come by relatively often. Still, none of them will be a massive amount that will settle you for life since this type of game only throws small to medium wins. Considering the size of the payout you’ll probably get, low variance games are better suited for beginners and players with a smaller budget.
    • Medium variance games — Medium variance games are an option for online casino visitors who want to play it safe but at the same time feel the excitement that games of chance provide. However, you won’t find too many slots that belong to the medium variance group as players usually go for either safe, low variance options or highly-rewarding high variance versions.
    • High variance games — For those who are only playing to get their hands on the long-awaited jackpot, high variance games are the top pick. Although you might have to wait a bit for that jackpot to arrive, once it does, you’ll see the suspense was worth it. Still, as you’ll also have to spin those reels and spend real cash while waiting for the game to throw you a win, don’t do it unless your budget can support it.

    How to define a Loose Slot?

    A loose machine is something every player dreams of stumbling upon. This is a machine that pays out more frequently than others and also throws up higher payments. In other words, loose slots take in very little of your real money and pay a lot and often.

    While some people claim that loose slots are a myth invented by casinos to make players spend more cash, others swear that these machines exist and are worth searching for. In case you belong to this second group, here are some tips on finding them:

    • Start small and play longer — As you can’t know when the machine will throw out a prize, the best thing to do is to start with smaller bets and play for some time until you get a feel for the title.
    • Activate all paylines — Some titles require that you activate all paylines to release a big win. Once you get comfortable with a game, make sure that you go for this option too.
    • Pick fast withdrawal slots — When you see that a casino site offers fast withdrawals, it could mean that its slots are known to be generous.
    • Stick to the popular titles — Titles don’t become popular by accident. If so many other casino players have been spinning the reels of the same games for years, it must be for a good reason.
    • Check the RTP — A title with a high RTP is supposed to pay out higher amounts than one with a lower percentage, so that’s also something you should check before you start playing
    • Choose slots based on volatility — Go for high volatility titles if you like big payouts. On the other hand, choose low volatility games for more frequent payouts.
    • Look up the hit frequency — You have more chances of getting some money if a game is known to generate winning combinations more often.

    Final Thoughts

    Now that you know every little detail about the best payout slots, all you have to do is process the information from this guide and apply it to your online gaming practices. Whether you’re a beginner or an experienced player, a good payout slot is always welcome to boost your account, and after reading this text, there’s no doubt you’ll be able to spot one in the wild.

    FAQ`s about Best RTP Slots UK

    How to pick an online casino that has the best online slots payout percentage?
    You can’t find a particular casino that can promise it pays the most. This is because online casinos don’t have anything to do with the payout size. They are decided by the random number generator, which is software designed to create a random set of numbers. These numbers show up on the grid in the form of symbols, the combination of which determines your win. In other words, except for regularly testing their RNGs, casino operators have no connection to your payout amount.
    Do some online casinos offer better payouts than others?
    Once again, the results of your spins on each game in each casino are random. Therefore, the size of the payouts a casino publishes on its site has nothing to do with the casino itself.
    What titles should I play in online casinos?
    When choosing titles to play in online casinos, don’t just look at their themes and graphics. While some may look attractive on the outside, you need to look at details such as the provider, the RTP percentage, hit frequency, and volatility (or variance, as it’s also called that way). You should also pay attention to your playing style, as well as to the amount of money you’re willing to spend. Once you come to terms with all these features, you can start looking for titles that meet all your requirements.
    Are online slots worth my time and money?
    Online slots are games of chance where no one can guarantee when or how much money you’ll win. Still, if you stick to the high-paying one, you’ll be coming back for more.
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