Best Online Slot Sites UK (Top 20)

  • Bally Casino logo
    1

    DEPOSIT £10 AND CLAIM 30 FREE SPINS

    Visit
    Bally Casino

    3.8 / 5

    New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. 18+. Free Spins: on Secrets of the Phoenix Megaways. Spins value: 20p each. Game availability & restrictions apply T&C Apply, 18+
  • FruitKings Casino logo
    2

    CLAIM 100% UP TO £50 + 100 FREE ROUNDS

    Visit
    FruitKings Casino

    3.8 / 5

    New players only. Min £10 deposit & wager. Free spins on Book of Dead (50 spins on day 1, 25 on day 2, 25 on day 3) 1p coin size. 40x wagering applies. Max cash out £250. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. Further Terms Apply. T&C Apply, 18+
  • Playsunny Casino logo
    3

    CLAIM 100% UP TO £50 + 50 FREE ROUNDS

    Visit
    Playsunny Casino

    4.0 / 5

    18+. New players only. Min £10 deposit & wager. Free spins on Big Bass Bonanza 1p coin size. 40x wagering applies. Max cash out £250. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. T&C Apply, 18+
  • Lottomart logo
    4

    COLLECT 100% UP TO £100

    Visit
    Lottomart

    4.0 / 5

    £10 min deposit. £100 max match. 50x wagering. Game eligibility & contributions vary. 10p to £5 bet range. £500 max redemption. New players only. Limited time offer. Valid 7 days T&C Apply, 18+
  • Luck.com Casino logo
    5

    DEPOSIT £10 AND COLLECT 100 SPINS

    Visit
    Luck.com Casino

    3.5 / 5

    18+. Available for new registered accounts only. Up to 100 Free Spins (FS) after complete registration (10p). Max win post wagering (WR): £10. Up to 100 Free Spins (FS) for the 1st dep of min £10. 50% Bonus up to £100 for the 2nd dep of min £10, received in as an instant Bonus format. Up to 25 Free Spins (FS) for a 3rd dep of £10+. FS value: 10p. Wheel of Fortune (WOF) will appear as a pop-up. Available to claim for 7 days. Prize not guaranteed. Prizes and wins from free spins are credited to your Bonus Account, and available for 7 days. 35x wagering. Max win post Wagering: £100 per deposit bonus. Players who fail to select the bonus upon deposit are not eligible. BeGambleAware.org. T&C Apply, 18+
  • Casushi Casino logo
    6

    CLAIM 100% UP TO £50 + 50 FREE ROUNDS

    Visit
    Casushi Casino

    3.8 / 5

    New players only. 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Book of Dead slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply T&C Apply, 18+
  • Monopoly Casino logo
    7

    DEPOSIT £10 AND CLAIM 30 FREE SPINS

    Visit
    Monopoly Casino

    4.1 / 5

    New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Free Spins: on MONOPOLY Paradise Mansion. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. T&C Apply, 18+
  • Betfred Casino logo
    8

    DEPOSIT £10 AND PLAY WITH 200 ROUNDS

    Visit
    Betfred Casino

    4.1 / 5

    New Casino customers only. £/€10 min transfer & stake on Casino slots within 7 days. Max bonus 200 Free Spins on selected games. Free Spins expire after 7 days. iOS app restrictions may apply. E-Wallet & Pre-Paid card restrictions apply. SMS validation may apply. Not available in NI T&C Apply, 18+
  • Virgin Games Casino logo
    9

    DEPOSIT £10 AND PLAY WITH 30 SPINS

    Visit
    Virgin Games Casino

    4.4 / 5

    New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. 18+. Free Spins: on Double Bubble. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. Current Jackpots are across selected games. T&C Apply, 18+
  • Fitzdares Casino logo
    10

    CLAIM 100% UP TO £100

    Visit
    Fitzdares Casino

    4.0 / 5

    New customers only aged 18+. Minimum deposit £10. Get a Casino Bonus matched to your first deposit, up to £100, after you stake £20 on slots, credited within 48 hours. Bonus expires in 7 days and has a 40x wagering requirement. Please bet responsibly. T&C Apply, 18+
  • Barz Casino logo
    11

    COLLECT 100% UP TO £300 + 50 FREE ROUNDS

    Visit
    Barz Casino

    4.1 / 5

    18+. New players only. Min. deposit £20. Max. bonus bet £5. 100 bonus spins on Book of Dead (No deposit required) on registration and 100% match bonus up to £300 plus 50 Bonus spins on Starburst on your 1st deposit. Winnings from all spins credited as bonus funds and capped at £20. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus & cash. Only bonus funds contribute towards wagering requirement. Bonus funds must be used within 30 days, spins within 72hrs. Affordability checks apply. Please gamble responsibly. BeGambleaware.org T&C Apply, 18+
  • Lottoland Casino logo
    12

    DEPOSIT £20 AND PLAY WITH 100 FREE SPINS

    Visit
    Lottoland Casino

    4.1 / 5

    18+, New customers only, register, deposit and stake £20 on Big Bass Bonanza within 7 days, and claim 100 Free spins on Big Bass Bonanza. Free spins expire 30 days after credited. Ends 30/06/24 at 23:59 GMT. Full T&Cs Apply. begambleaware.org. T&C Apply, 18+
  • Dragonbet logo
    13

    DEPOSIT £10 AND PLAY WITH 20 FREE SPINS

    Visit
    Dragonbet

    3.8 / 5

    Min £10 Deposit to Qualify T&C's Apply T&C Apply, 18+
  • Jackpotjoy Casino logo
    14

    DEPOSIT £10 AND GET 30 ROUNDS

    Visit
    Jackpotjoy Casino

    4.1 / 5

    New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Free Spins: on Double Bubble. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. T&C Apply, 18+
  • JackpotCity Casino logo
    15

    COLLECT 100% UP TO £100 + 100 FREE ROUNDS

    Visit
    JackpotCity Casino

    3.6 / 5

    New UK based customers only. You must opt in (on registration form) & deposit £20+ via a debit card to qualify. Offer valid 7 days from registration. Welcome Bonus: 100% match up to £100 on 1st deposit. 50x wagering applies (as do weighting requirements). Free Spins: Awarded on Gold Blitz once you have staked £20 on any Games Global game. Spin value = 10p. No wagering requirements on free spin winnings T&C Apply, 18+
  • MadSlots Casino logo
    16

    COLLECT 100% UP TO £200

    Visit
    MadSlots Casino

    3.6 / 5

    18+. Available for new registered accounts only. Get up to 100 Free Spins (FS) immediately after complete registration locked (10p). Max win post wagering (WR): £10. 100% Bonus up to £200 for the 1st dep of min £10, received in an instant Bonus format. Up to 100 Free Spins (FS) for a 2nd dep of £10+. Up to 100 FS for the 3rd dep of £10+.FS value: 10p. Wheel of Fortune (WOF) will appear as a pop-up. Available to claim for 7 days. Prize not guaranteed. Prizes and wins from free spins are credited to your Bonus Account, and available for 7 days. 30x wagering. Max win post Wagering: £ 100 per deposit bonus. Players who fail to select the bonus upon deposit are not eligible. T&Cs Apply. BeGambleAware.org T&C Apply, 18+
  • MrQ Casino logo
    17

    DEPOSIT £10 AND GET 30 FREE ROUNDS

    Visit
    MrQ Casino

    4.1 / 5

    First deposit only. Min deposit & spend £10. Max 30 spins on Big Bass Bonanza Megaways at 20p per spin. Spins credited upon spend of £10 T&C Apply, 18+
  • Megacasino logo
    18

    CLAIM 100% UP TO £66 + 33 FREE SPINS

    Visit
    Megacasino

    4.0 / 5

    Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £20, max. Bonus £66. WR of 30x Deposit Plus Bonus amount (Slots count 100% and any other game 10%) within 30 days. Spins Game: Starburst. WR 60x free spin winnings amount (only Slots count) within 30 days. Max Spins:33 . Spin value: £0.10. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies).Bonus must be claimed before using deposited funds. Bonuses do not prevent withdrawing deposit balance. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies T&C Apply, 18+
  • Winomania Casino logo
    19

    GET 100% UP TO £100 + 100 FREE SPINS

    Visit
    Winomania Casino

    4.3 / 5

    1st deposit only. Min deposit £10. Max bonus: £100. X40 wagering. Bonus Spins valid for selected games only. X40 wagering on bonus spins winnings. Expire within 24 Hours T&C Apply, 18+
  • Rhino.bet Casino logo
    20

    DEPOSIT £25 AND GET 75 FREE ROUNDS

    Visit
    Rhino.bet Casino

    3.9 / 5

    New customers only. Min Deposit £25. Wager £25 minimum on slots and get 75 free spins on Bonanza. Free spins will expire 7 days after issue. x10 wagering on Free spins. BeGambleAware.org. Bet The Responsible Way. T&C Apply, 18+
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Compare Top 20 Online Slot Sites UK

With countless online slots sites today, finding one that fits your preferences is tough. Our KingCasinoBonus.uk experts identified and categorized the leading UK slot sites based on key criteria. Our highest-rated picks deliver great slot libraries and jackpots, and feature the finest software providers.

Dive into our breakdown of the UK’s finest slot sites, tailored just for you! We explore the ultimate online slots sites for every type of gamer. With his hefty seven years in the UK’s online casino industry, our CEO, Ionut Catalin Marin has curated a selection of sites that hit the mark for both newbies and old hands.

RankCasinoRatingSlot GamesMin. DepositPayout Time
1Bally Casino logoBally Casino3.8430£101 day
2FruitKings Casino logoFruitKings Casino3.81000£102 days
3Playsunny Casino logoPlaysunny Casino4.01450£102 days
4Lottomart logoLottomart4.02005£11 day
5Luck.com Casino logoLuck.com Casino3.550£51-2 days
6Casushi Casino logoCasushi Casino3.8750£102 days
7Monopoly Casino logoMonopoly Casino4.11300£101 day
8Betfred Casino logoBetfred Casino4.11000£5under 1 hour
9Virgin Games Casino logoVirgin Games Casino4.4960£101 day
10Fitzdares Casino logoFitzdares Casino4.01127£101 day
11Barz Casino logoBarz Casino4.12000£202-3 days
12Lottoland Casino logoLottoland Casino4.11961£51 day
13Dragonbet logoDragonbet3.8175£11 day
14Jackpotjoy Casino logoJackpotjoy Casino4.1750£101 day
15JackpotCity Casino logoJackpotCity Casino3.6400£51 day
16MadSlots Casino logoMadSlots Casino3.61000£51-2 days
17MrQ Casino logoMrQ Casino4.1800£10under 1 hour
18Megacasino logoMegacasino4.05000£10under 1 hour
19Winomania Casino logoWinomania Casino4.3600£102 days
20Rhino.bet Casino logoRhino.bet Casino3.9600£202 days
Bally Casino logo

1. Bally Casino Review

Bally Casino Rating

Rating3.8 / 5
Look & Feel
4.5 / 5
Payout Speed
4.1 / 5
Slot Games
4.0 / 5
Live Games
5.0 / 5

Bally Casino is one of the best UK slot site, and what makes it the crown jewel of UK slot site is its collection of 430+ games from renowned providers like Pragmatic Play and NetEnt. Slot variety spans themes and features, from the latest video slots to classic three-reel games. While the number of titles may seem quite low, the collection is diverse, and the slots offer high-quality play. Despite the smaller number, our experts liked the library of slots at Bally Casino. However, this is why the site falls short of first place.

If you are a mobile player, you can rest assured. With a great mobile optimization common to the best Gamesys sites, you can enjoy all your favourite titles on the go. Bally Casino also carries the rare progressive jackpots, as well as Slingo titles, which are a combination of slots and bingo.

Pros:

  • Leading software providers, like Pragmatic, Gamesys, and NetEnt
  • Optimized gaming on all mobile devices
  • Jackpots, Slingo, classic and video slots available

Cons:

  • Smaller game selection than some sites
  • No phone support available for users in need of help

Alternatives:

The best alternatives to Bally Casino include BetUK (no wagering free spins on Big Bass Splash and no monthly maximum cashout) and Lottomart (2005+ slots, up to £100 bonus and 20 Free Spins on Big Bass Bonanza).

FruitKings Casino logo

2. FruitKings Casino Review

FruitKings Casino Rating

Rating3.8 / 5
Look & Feel
4.0 / 5
Payout Speed
3.9 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

With a choice of over 1000 slots, is a top contender where you can always find a suitable slot at FruitKings Casino and never play the same game twice. You can’t play slots from a downloadable app but can access them on any desktop and mobile browser.

UK players can use the ‘Search’ bar to find a particular game or provider. Unless you register on the platform, you cannot access the titles.

Pros

  • You can explore a catalog of hundreds of more than 1000 slots
  • Browse innovative slots from leading developers like Yggdrasil, NetEnt, Red Tiger, and more

Cons

  • Not all the slots have the autoplay feature.
Playsunny Casino logo

3. Playsunny Casino Review

Playsunny Casino Rating

Rating4.0 / 5
Look & Feel
4.5 / 5
Payout Speed
4.1 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

Play Sunny emerges as a top slot site for fans of classic slots, with over 30 three-reel titles alongside its modern selection. Across over 1400 total games, Play Sunny brings a good amount of fruit and 7s slot games, which we appreciated. If you want to go from the classics to the other titles, know that you will find anything you’d like: video slots, megaways, as well as progressive jackpots.

Pros:

  • 20+ beloved classic physical-reel slots
  • 1400+ additional modern games
  • Mega Moolah titles are available

Cons:

  • Dated web design lacks visual appeal
  • Slow payout processing speed of 2 days

Alternatives:

PlaySunny is optimized for mobile play, but we’ve seen better iOS casino apps in April 2024, such as Kwiff Casino.

Lottomart logo

4. Lottomart Review

Lottomart Rating

Rating4.0 / 5
Look & Feel
4.5 / 5
Payout Speed
4.0 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

UK bettors can play 2000 slot titles at Lottomart, and multiple software developers like NetEnt, Microgaming, and Red Tiger provide these games. Some of the most popular slots you should look at are Rainbow Riches, Mega Moolah, Starburst, and Fishin’ Frenzy Megaways.

Moreover, you can play over 50 progressive jackpots on the site.

Pros

  • Many slot games – 2000
  • Multiple top providers
  • Different game categories

Cons

  • The titles do not have a demo version.
Luck.com Casino logo

5. Luck.com Casino Review

Luck.com Casino Rating

Rating3.5 / 5
Look & Feel
5.0 / 5
Payout Speed
3.3 / 5
Slot Games
3.0 / 5
Live Games
3.0 / 5

Slots Review

Luck.com Casino has a small slot collection with 50 games. On the other hand, you will be able to access a high-quality selection. Here, you can play the UK punter’s favorite game types, including megaways. The bets start at £0.10 and can go up to £100.

If you want to try jackpot variations, this operator does not have such titles.

Pros

  • Skywind and Slot Factory provide high-quality slots
  • You can play megaways, classic slots, and video slots

Cons

  • Only 50 games are available.
Casushi Casino logo

6. Casushi Casino Review

Casushi Casino Rating

Rating3.8 / 5
Look & Feel
4.5 / 5
Payout Speed
3.9 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

Casushi Casino secures the silver spot in our UK slot site rankings, thanks to its hefty +750 slots from the crème de la crème of developers like NetEnt, Microgaming, and Red Tiger. Casushi is a playground of variety, covering everything from timeless classics to the latest video slots, megaways, and jackpots.

Dive into the Mega Moolah series for a shot at its progressive jackpots, now towering over £5 million. And while the new UKGC rules mean no bonus buy slots, there’s still plenty to explore, including about 50 megaways titles with 1000s of paylines.

Pros:

  • 750+ games from major software developers, like Microgaming
  • Intuitive mobile optimization for flawless slot play
  • Classic titles alongside new video slots, megaways, and jackpots

Cons:

  • Withdrawal times are slower than some sites
  • Few progressive jackpot options

Alternatives:

See what Casushi’s sister sites have in store for you.

Monopoly Casino logo

7. Monopoly Casino Review

Monopoly Casino Rating

Rating4.1 / 5
Look & Feel
5.0 / 5
Payout Speed
4.0 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

With a staggering selection of over 1300 games, Monopoly Casino is the undisputed best slot site for variety. Experience the most sought-after slots from giants like Pragmatic Play, NetEnt, and Microgaming. Newbies, rejoice: land 30 wager-free spins as a welcome treat, perfect for exploring the Monopoly-themed slots.

The site promises silky-smooth mobile gameplay and top-notch customer support, ensuring a premium slot experience for all. But, traditionalists be warned: the classic three-reel slot selection is on the lean side.

Pros:

  • Massive 1300+ game library from top providers
  • Great optimization for mobile slots play
  • No wagering welcome bonus available on the Monopoly slot series

Cons:

  • Selection can feel overwhelming for some
  • The number of classic slots is quite limited

Alternatives:

Check out Monopoly Casino sister sites like Virgin Games or JackpotJoy.

Betfred Casino logo

8. Betfred Casino Review

Betfred Casino Rating

Rating4.1 / 5
Look & Feel
5.0 / 5
Payout Speed
4.6 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

Betfred Casino stands out as the top slots site for fans of NetEnt slots, boasting a vast array of titles from the acclaimed developer. Dive into the heart of British slot culture with all-time favorites like the Starburst series and Gonzo’s Quest. Beyond the NetEnt galaxy, Betfred offers a rich selection of nearly 1000 games from various top-notch studios, with NetEnt leading the pack in volume.

The experience is enhanced with seamless mobile gameplay and a generous welcome offer: 200 spins. This bonus is among the most competitive in the UK scene, giving you a golden ticket to explore NetEnt’s finest with just a small investment.

Pros:

  • Extensive NetEnt selection
  • Great optimization for mobile play
  • Great welcome bonus with up to 200 spins

Cons:

  • Selection beyond NetEnt is quite bland
  • Site design feels dated to some users

Alternatives

We recommend Barz Casino for a similar variety of NetEnt slots and bonuses.

Virgin Games Casino logo

9. Virgin Games Casino Review

Virgin Games Casino Rating

Rating4.4 / 5
Look & Feel
5.0 / 5
Payout Speed
4.8 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

At Virgin Games, the slots section is very well-defined. There are 30 providers available that power more than 960 slots, amongst which there are daily jackpots, video slots, classic slots, and more.

If you click on a game, the site offers additional information, such as a description. If you are not a registered member, you cannot access the autoplay. Bets range from as low as £0.10 and up to £60.

Pros

  • More than 950 slots
  • A significant number of jackpots
  • Classic, Video, and other types of slots

Cons

  • No penny slots
  • The demo option is not available for all titles.
Fitzdares Casino logo

10. Fitzdares Casino Review

Fitzdares Casino Rating

Rating4.0 / 5
Look & Feel
4.5 / 5
Payout Speed
4.5 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

Fitzdares Casino features an extensive catalogue of slots with over 1100 games from premium providers, including Microgaming and Blueprint. You will find most types of games available, including classic, video, megaways, bonus features, progressive and regular jackpots.

Pros

  • Over 1100 slots
  • More than 10 top providers
  • Max bet of £100

Cons

  • Lack of demo mode
  • No games from NetEnt
Barz Casino logo

11. Barz Casino Review

Barz Casino Rating

Rating4.1 / 5
Look & Feel
5.0 / 5
Payout Speed
3.9 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

Review on Slots

You can play a variety of slot formats at Barz Casino with unique bonus features and top-notch graphics. The 2000+ lobby is fueled by well-known developers such as NetEnt, Microgaming and Play’n G0, ensuring a consistent supply of new titles. Moreover, the betting limits are varied, ranging from £0.10 to £100.

Pros

  • Selection of over 2000 thematic slots
  • Tiles from over 70 renowned software developers
  • Most slots have limits that you can set on the autoplay feature

Cons

  • A small repertoire of classic slots
  • No demo version is available
Lottoland Casino logo

12. Lottoland Casino Review

Lottoland Casino Rating

Rating4.1 / 5
Look & Feel
4.4 / 5
Payout Speed
5.0 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

With a whopping 100+ progressive jackpot slots, Lottoland Casino is our experts’ top pick for pooled jackpots. Beyond this, Lottoland also provides over 1000 slots in total with excellent variety, among which you can try out Big Bass Splash, Fluffy Favourites, and Rainbow Riches. Big Bass Bonanza is playable with the sign-up bonus from this top UK slot site.

Besides the great slot collection, you can enjoy a great banking policy. The minimum deposit and withdrawal amounts are very low, at £5, catering to players of smaller budgets as well.

Pros:

  • 100+ progressive jackpot titles from top studios
  • 1500+ additional slots for variety
  • Low £5 minimum deposit and withdrawal amounts

Cons:

  • No mobile apps for additional convenience
  • Restrictive max cashout limit on bonuses

Alternatives: 

If you want to try out similar £5 minimum deposit casinos, our experts already reviewed them and highlighted the best ones on the UK market. We highlight Electric Spins and Luck.com as top alternatives to Lottoland Casino.

Dragonbet logo

13. Dragonbet Review

Dragonbet Rating

Rating3.8 / 5
Look & Feel
5.0 / 5
Payout Speed
4.7 / 5
Slot Games
3.8 / 5
Live Games
5.0 / 5

Dragonbet Casino features a relatively limited yet highly qualitative collection of around 175 slots. All games are supplied by three developers: Pragmatic Play, Blueprint and LEAP. The selection encompasses most slot types, including classic, video, special features and megaways, with bets ranging from £0.10 to £100.

We would like to see the addition of more games and top providers to make the catalogue suitable for even more British gamblers.

Pros

  • Most games come from premium providers, Pragmatic Play and Blueprint Gaming
  • Most types of slots are available, including classic, video and megaways
  • Great maximum bet of £100 on specific titles

Cons

  • Under 200 slots
  • Only 2 providers
Jackpotjoy Casino logo

14. Jackpotjoy Casino Review

Jackpotjoy Casino Rating

Rating4.1 / 5
Look & Feel
5.0 / 5
Payout Speed
4.0 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

Jackpotjoy Casino offers British punters a good collection of around 750 slots from well-known providers, such as Microgaming, NetEnt, Gamesys, and Eyecon. There are multiple slot types, such as classic slots, five and 6-reel video titles, jackpots, and progressive slots, which are rare.

Pros

  • Popular providers such as Play’n Go, NetEnt, Microgaming, and Gamesys
  • Daily jackpot games and progressive slots are available
  • players can access mobile slot games on the go

Cons

  • No penny slots available.
JackpotCity Casino logo

15. JackpotCity Casino Review

JackpotCity Casino Rating

Rating3.6 / 5
Look & Feel
4.8 / 5
Payout Speed
4.5 / 5
Slot Games
4.5 / 5
Live Games
4.2 / 5

Review on Slots

There are around 500 slot games available at JackpotCity Casino. Players can choose from Classic slots, Drops & Wins, Megaways, and Jackpots, all separately categorized on the platform. Developers like Pragmatic Play, Games Global, or 1X2 Gaming provide the slot titles. Some popular titles include Big Bass Bonanza, Gates of Olympus, Power of Thor, and more. Bets range from as low as £0.1 and up to £50 and maybe more for some titles.

Pros

  • 500+ slot titles are available
  • Popular titles like Big Bass Bonanza
  • Titles from well-known providers like Pragmatic Play

Cons 

  • No progressive jackpots
  • No penny slots
  • The demo option is not available
MadSlots Casino logo

16. MadSlots Casino Review

MadSlots Casino Rating

Rating3.6 / 5
Look & Feel
4.5 / 5
Payout Speed
3.6 / 5
Slot Games
5.0 / 5
Live Games
3.5 / 5

Slots Review

MadSlots Casino’s slot catalog is quite diverse, and it holds 1000 titles from well-known providers, such as Play’n Go, Relax Gaming, Microgaming, and Pragmatic Play. The games have various themes and a wide range of features, such as cascading symbols, wilds, and clusters.

Once you create an account on the site, you can play the games in the demo mode and find out more details about each title by pressing the ‘info’ button.

Pros

  • The slot collection has 1000 titles
  • Popular providers, such as Pragmatic Play, Play’n Go, and Relax Gaming

Cons

  • No jackpot slots are available on the platform.
MrQ Casino logo

17. MrQ Casino Review

MrQ Casino Rating

Rating4.1 / 5
Look & Feel
5.0 / 5
Payout Speed
4.2 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

We consider that MrQ Casino is one of the best sites for Microgaming, with one of the largest selections of titles from the software provider. Within this game collection consisting of 800 titles, you will also find Microgaming hits like Immortal Romance and Thunderstruck II. Another area we liked at this casino is the expansive 90+ jackpot selection.

However, the customer support at MrQ is where we had to draw some points. No phone support is available, which we typically recommend for urgent matters. Moreover, the live chat support is not available around the clock.

Pros:

  • 800 slots in the collection, including Microgaming titles
  • Solid additional selection from other providers
  • 90+ jackpot options are available

Cons:

  • Site navigation can feel unintuitive
  • Customer support is not available 24/7

Alternatives:

The best Microgaming slot site alternative with a 24/7 customer support is LeoVegas. Other noteworthy options are NetBet and Pokerstars.

Megacasino logo

18. Megacasino Review

Megacasino Rating

Rating4.0 / 5
Look & Feel
4.0 / 5
Payout Speed
4.0 / 5
Slot Games
5.0 / 5
Live Games
5.0 / 5

Megacasino boasts an impressive collection of over 5000 slots, and top iGaming developers like Pragmatic Play, NetEnt, Play’n Go, and Microgaming provide most of the titles. British players cannot test the slots beforehand in the demo mode.

That said, some jackpots on the platform have outstanding pots of around £2000000, even if you won’t find any progressive such games on the platform.

Also, Megacasino packs some of the most popular and in-demand games, such as Gonzo’s Quest, Starburst, Bonanza, and Book of Dead.

Pros

  • An outstanding collection of over 5000 slots
  • A few jackpots have £2000000 pots, which is impressive

Cons

  • No progressive jackpot options
  • There is no demo version of the games.
Winomania Casino logo

19. Winomania Casino Review

Winomania Casino Rating

Rating4.3 / 5
Look & Feel
4.0 / 5
Payout Speed
4.1 / 5
Slot Games
4.0 / 5
Live Games
5.0 / 5

Winomania Casino’s library does not provide many slot options but only around 600 titles from a few game developers, like Microgaming and NetEnt. However, players can choose from various themes and styles, and the minimum bet is usually around £0.1.

Experienced gamblers may still not consider registering as no progressive jackpots are available.

Pros

  • Various slot types, including 5-reels, video slots, megaways, and jackpots.
  • Reliable game developers, like Microgaming, NetEnt, and Big Time Gaming.
  • Gamblers can set autoplay limits.

Cons

  • Only 600 slots are available.
  • No progressive jackpots.
Rhino.bet Casino logo

20. Rhino.bet Casino Review

Rhino.bet Casino Rating

Rating3.9 / 5
Look & Feel
5.0 / 5
Payout Speed
3.3 / 5
Slot Games
4.5 / 5
Live Games
5.0 / 5

With over 600 slots spanning diverse styles, themes, and leading developers, Rhino.bet delivers a varied and quality-driven slot experience. UK players will find top hits prominently featured while also discovering fresh options across video, classic, and progressive jackpot slots.

In this area, bets start at £0.10 and go up to £150.

Pros

  • A great portfolio of 600 slot games
  • You can play 40 Drops and Wins slots, a special Pragmatic Play feature that comes with random jackpots within the slot.

Cons

  • There are no 3D slots for UK players on the site.

How We Review the Best Real Money Slots Sites UK

How-we-review

 

Our experienced gaming experts manually analysed each recommended slot site. Our reviewers followed our review criteria about bonus options, specific and general terms of use, responsible gaming, wagering requirements, banking, support, and gaming content.

Security of Slots Casino Sites

We considered several variables besides the UKGC licensing to determine a slot site’s security. For instance, a factor such as popularity and reputation can signify reliability.

If an operator has high and positive ratings across several reliable online review platforms and forums, you can take it as an indicator of trustworthiness.

Essential Third-party Game Testing Certificates

Many of our recommended UK slot sites have independent third-party organisations testing and evaluating their gaming software to ensure its fairness and functionality. To ensure the gaming quality is tested, we seek approval from eCOGRA, iTech Labs, Gaming Laboratories International (GLI), and similar testing labs.

Slots Variety from Trustworthy Software Providers

A wide range of slot games can make it harder to pick a single game but gives you more range and allows you to find a game tailored to your gaming style. We promote only UK slot sites that provide licensed content from industry-leading software providers with a proven track record.

Tested Online Slots Real Money Bonuses

  • We examine the casino bonus offers and their wagering requirements
  • We sign up and claim the bonus with a qualifying deposit or code
  • We start wagering on qualifying games
  • Once all bonus terms are met, we submit a request for a withdrawal
  • Provide withdrawal verification documents (if necessary)
  • Wait for the casino to approve the withdrawal and credit the bonus/winnings

We Manually Check Payment Methods

Alongside reviewing the availability of payment methods, we check the efficacy of each payment option. A few of the banking criteria include deposit and withdrawal limits, processing of transactions, and whether the casino or payment service charges any fees. At the very least, a casino should have the following payment methods available to all UK players:

  • Visa
  • MasterCard
  • Boku
  • Skrill or Neteller
  • Pay by Phone
  • Bank Transfer
  • Neosurf
  • PayPal

Keeping up to Date With the Latest Mobile Gambling Trends

We tasted several slot games in each of the three casinos using an iPhone 14 Pro Max and a Samsung s22, and the games worked exceptionally well, with no lags, crashes, or similar issues, on both devices. Of course, you can even have an older smartphone model and still enjoy optimal game performance.

Our experience has shown that most online casino players in the UK and beyond tend to play on mobile casinos. You should seek new mobile casinos if you want to play new mobile slots on their release date.

A mobile app is not necessary, but it may appeal to many mobile players.

At the very least, we ensure the slot site is compatible for use on mobile in-browser on all major operating systems: iOS, Windows, and Android. We recommend it only after manually testing a casino’s mobile functionality relating to gaming content, payments, support, security, and user experience.

How to Choose Your Best Online Slots Sites to Play

Here’s what you should look at before you choose a licensed casino from our list of the best online slots real money UK sites:

  1. Compare casinos to find a slot site with proper game filters
  2. Look for medium-to-high volatility games
  3. Find a casino with slots from leading providers
  4. Check for slot-specific promotions, like free spins
  5. The slots should have demo (fun) mode
  6. Hit the Play button on this page when you’ve found a good slot site for your needs.

How to Sign-up on Slot Sites with a Free Bonus

Online-Casino-Slots-Sign-up-and-Bonuses-Guide

Our expert guide helps you sign-up and start playing for free. Here’s how:

How to find online slots no deposit bonuses

Look for UK slots sites with no deposit free spins. Use our filter to select sign-up no deposit slot bonuses with favourable terms.  Note that as easy as the bonus terms may seem, you still have a limited amount of time (around 7 days, on average) to satisfy the remainder of the terms before the bonus expires.

With free spins for online slots, real money games can become a much better experience, because you have the opportunity to test the online real money slots sites yourself before depositing. No wagering and no deposit free spins give you the highest chance of walking away with an early positive bankroll.

If you choose from our selection of no deposit slots bonus offers, you are ensured to play on secure slot sites with free bonuses on sign-up and explore various slot games by top providers. These offers can result in a real money payout, but the fact that it doesn’t require a deposit generates a low expectation due to the equally low value of the spins bonus itself.

How to sign-up at online casino slot websites

  1. Read our review and carefully choose your slots site
  2. Prioritize independent slots online casinos for unique bonuses
  3. Create a new account by filling the blanks correctly with your ID information
  4. Complete the KYC (Know Your Customer) procedure

Why should you prioritize independent sites? Because with sister sites, there’s a chance you may get excluded from slot bonuses if you claim the same promotion twice or more across the network.

What is the best time to play online slots at UK sites?

There is no best time to play online real money slots because all games are governed by a Random Number Generator and pay out randomly. That being said, there is no way to uncover when a slot machine will pay other than hacking into the casino providers’ servers and manipulating something there.

The only way to improve your chances in slots is to play responsibly on safe, best-rated slot sites verified by KingCasinoBonus!

How to Compare Online Casino Slots Bonuses

  • Choose UK Slot Sites With a Valuable Welcome Bonus: A valuable offer is a welcome bonuses with fair terms and acceptable wagering requirements, withdrawal limits and maximum bets. All our listed sign-up promos pass this test. For some offers, like the Barz Casino welcome bonus, the wager terms may seem slightly above average, but the bonus compensates with other favourable conditions.
  • Compare Minimum Deposits: This way, you know whether your budget qualifies for any bonus. While there are many no deposit bonuses out there, many popular casinos impose a minimum deposit for slots bonuses (between 5 to 20 pounds).
  • See Which Slot Games Qualify: Not all games will be playable with free spins, and some of the games will have different game weighting, which you should check out before playing with bonus funds (doesn’s apply with no wager bonuses).
  • Check out Online Slots No Wagering Bonuses: For a small deposit of just £10, you can claim no wager bonuses at many of our listed casino operators, but PlayOJO is renowned for being a no wagering casino all-around. Regardless of the no-wager benefit, you should know the remaining conditions.
  • Find Online Real Money Slots Sites with a Free Bonus for existing players: A casino can award you with a slots no deposit bonus for your active play, if you are a VIP member, or immediately after you create an account. The former case is to be found in any of UK’s casinos with VIP and loyalty programs. You’ll notice each of the no deposit bonuses above are cash bonuses (as opposed to free spins). But specified slot games qualify for each bonus, meaning you can play first-rate slot games and take advantage of the games’ features while redeeming your bonus at the same time.

You still need to read the terms for each slots deposit bonus.

Recommended-Payment-Methods-for-UK-Players

Payment method Average casino transaction limits Withdrawal time Pros (for slots player) Cons
Debit cards £1 – No limit Instant – up to 3 days Widely accepted across UK slot sites Slowe 1-4 day withdrawals
PayPal £5 – £10,000 Instant Quick payouts of slot winnings Some bonuses restrict its usage
MuchBetter £5 – £5,000 Instant Convenient e-wallet Not available on all UK casinos
Boku £3 – £30/day N/A Best low-roller payment option Only up to 30 pounds deposit
Pay by Mobile £3 – £30 N/A Direct phone carrier billing, anonymity Credit betting concerns

We additionally create and curate lists for casinos with specific payments:

April List of Slot Sites with Low Minimum Deposits

UK players looking for the easiest way to play slots should focus on low minimum deposit casinos. These allow you to spin real money slots starting from just 10p or 20p a spin. Get started with deposits as low as £5 or £10, and get more bang for your buck. Stretch low deposits into long slot sessions with bonuses with our selection of minimum deposit casinos for slots in April 2024:

  1. Dragon Bet Casino – £1 minimum deposit casino with 175 online slots
  2. Luck.com – best slot site with a £5 minimum deposit and 100 FSND on registration
  3. Virgin Games – £10 deposit slot site with £25000 max cashout
  4. Madslots – best slots bonuses with a £10 deposit
  5. Monopoly Casino – no wagering slots with low deposit
  6. BetUK – £10 minimum deposit, slots with no wagering
  7. Voodoo Dreams – low deposit spins on Book of Dead

Top 10 Best Online Slots UK for Real Money

Rank Real Money Slots Games Best feature Provider
#1 Book of Dead Popular for bonuses Play’n GO
#2 Starburst Low volatility NetEnt
#3 Mega Moolah Progressive jackpot Microgaming
#4 Rainbow Riches Wishing Well feature Barcrest
#5 Gonzo’s Quest Tumbling reels NetEnt
#6 Fishin’ Frenzy Megaways Multi-payline slot Blueprint Gaming
#7 Sweet Bonanza Candy-crush like graphics Pragmatic Play
#8 Wolf Gold 3 different jackpots Pragmatic Play
#9 Buffalo Blitz 4096 ways to win Playtech
#10 Goblin’s Cave Classic low volatility slot Playtech

The above table lists some of the most popular slot games with some of the best features and top game mechanics.

Book of Dead – best high-volatility slot

Book-of-Dead best-high-volatility-slot

Book of Dead is our expert’s choice for the best high-volatility slot. Since UK players mainly seek this type of game, we selected Book of Dead, developed by Play’n GO, because it is packed with special features for real money players.

Book of Dead Slot Details Data
Launch Date 2016
Slot Type Video Slot
Reels 5
Paylines 10
RTP 96.2%
Volatility High
Max Win 250,000x stake

Key Features

  • Expanding Symbol – Land a special symbol that expands across the reels.
  • Free Spins – Landing 3 book scatter symbols awards 10 free spins with expanded special symbols.
  • Gamble – Double your winnings up to 5x by guessing the correct card color.

With exotic Egyptian graphics, adrenaline-pumping gameplay, and huge payout potential, Book of Dead delivers an electrifying high-variance experience. You can retrigger the bonus round, which makes this a must-play high volatility slot.

Bonus Potential

If you’re a frequent Book of Dead player, we recommend taking advantage of slot bonuses with free spins on Book of Dead, like the one from 21 Casino giving 21 free spins on this game. This lets you experience all the bonus features with an average wagering requirement of 35x.

Starburst – best low-volatility slot

Starburst best-low-volatility-slot

Starburst comes second in our top slots ranking, but it’s undoubtedly the best low-variance online slot game in the UK. Free sign-up bonuses on NetEnt’s slot make it a true classic.

Book of Dead Slot Details Data
Launch Date 2012
Slot Type Video Slot
Reels 5
Paylines 10
RTP 96.1%
Volatility Low
Max Win 50,000x stake

Key Features

  • Wild Symbol – The Starburst wild symbol appears on reels 2, 3 and 4 and expands to cover the entire reel.
  • Re-Spins – Landing a wild symbol triggers up to 3 re-spins with sticky wilds in place.
  • Bet Lines – With 10 fixed paylines, Starburst offers flexible betting options to suit all budgets.

With its cosmic theme, cascading reels and exciting re-spin feature, Starburst has cemented itself as one of the most popular low-volatility slots of all time. The vibrant graphics and synth soundtrack create an immersive, futuristic atmosphere. Frequent payouts make Starburst the perfect low-risk slot for both new and experienced players.

Bonus Potential

Regarding Starburst free spins bonuses, our expert recommends no deposit offers we tested, like the Starburst bonus at Space Wins. For a lower wagering requirement than Space Wins’ and an easier time, we believe PlanetSportBet’s bonus with a deposit of £20 is worth claiming (10x wagering).

Mega Moolah – best progressive jackpot slot

Mega-Moolah best-progressive-jackpot-slot

We chose Mega Moolah as the best progressive jackpot slot due to its popularity in the UK and beyond. Mega Moolah is a slot with multiple variations like Mega Money Wheel connected in the same network. All the games feature 5 reels, 25 paylines and the progressive jackpot slot fueled by Microgaming/Games Global.

Key Details

Mega Moolah Slot Details Data
Launch Date 2006
Slot Type Video Slot
Reels 5
Paylines 25
RTP 88.12%
Volatility Medium
Max Win Mega Progressive Jackpot starts at £1,000,000

Key Features

  • Four Jackpots – Mini, Minor, Major and Mega jackpots with various prize levels.
  • Free Spins – Landing 3 or more scatters will trigger 15 bonus free spins.
  • Wild Substitutions – The lion symbol acts as a Wild and substitutes for all symbols except scatters.

Explore the African wildlife on Absolootly Mad: Mega Moolah, the best progressive jackpot slot. Are you familiar with the record Mega Moolah has set? The game has awarded tens of millions in top prizes, including a record £17.9 million jackpot hit in 2022.

Bonus Potential 

Zodiac Casino has the most popular bonus for Mega Moolah: deposit £1 and get £20 to play the best progressive jackpot slot. Alternatively, you can check out Captain Cooks jackpot chances for £5.

Slots come in all shapes and sizes these days: there’s an endless variety of types, from classic slots to video slots to progressive jackpots and Megaways. KingCasinoBonus experts introduce you to the most popular slot games by type, along with a variety of websites powered by the finest providers in the industry. Here are our recommendations:

Classic Slots

The original and simplest type of slot machine is the classic slot, which has three reels and symbols that remind of the classic one-armed bandit: fruits, bars, and sevens. Here are some of the best classic slots in UK online casinos and where you can find them:

  • Fire Joker by Play’n GO – play at PlayOJO with no wagering bonuses or Mr.Q/MadSlots
  • Book of Ra by Novomatic – BetFred welcomes you with 200 no wagering spins or try it at Luck casino with low wagering
  • Cleopatra by IGT –  top IGT casinos like Bally Casino, Casushi Casino host it
  • Double Diamond by IGT – Rainbow Riches has it (along with a top no wager bonus); also available at Buzz Bingo

Video Slots

Video slots have five reels and elaborate themes with cinematic cutscenes, bonus rounds, and special features. If you want to try out this type of slot, we compiled a list of top slot sites online in the UK that have them:

  • Starburst (NetEnt) – found on virtually all NetEnt casinos and at PlanetSportBet, where you get low wagering spins for 20 pounds
  • Gonzo’s Quest (NetEnt) – found at Monopoly Casinos, Luck Casino
  • Immortal Romance (Microgaming) – available at Bally Casino
  • Thunderstruck II (Microgaming) – Play at Wild West Wins casino

Progressive Slots

Slots with progressive jackpots have dynamic maximum pot sizes that increase in value as more players play until someone triggers the jackpot prize. Here are our picks:

  • Mega Moolah by Microgaming – play at Zodiac Casino or Captain Cooks
  • Divine Fortune by NetEnt – play at BetFred, Luck Casino
  • Jackpot Giant by NetEnt –  MegaCasino has it

Megaways Slots

In Megaways Slots, symbols form across up to 117,649 paylines that make the reels change constantly:

  • Bonanza (Pragmatic Play) – provided by BetFred
  • Fishin Frenzy Megaways (Big Time Gaming) – available on Buzz Bingo
  • Reel King Megaways – provided by Play Sunny Casino

3D Slots

3D slots use advanced graphics and animations to create an interactive and even more cinematic experience than video slots. Below, you can find the best examples of 3D Slots and where you can play them:

  • Jack and the Beanstalk (NetEnt)- found in Mr. Q
  • Steam Tower (NetEnt) – found at Play Ojo (no wagering free spins)
  • Gorilla Go Wild (SG Digital) – found at Lottoland Casino

Best UK Online Slots Providers

Microgaming, NetEnt, Playtech, IGT, and Play’n GO are the industry’s most recognisable and most popular providers of slots. Each brand has a rich portfolio of online slots, and with each new release, they at least match, if not surpass, the quality of earlier games.

Players receive their games well for their grand visuals, sounds, and in-game mechanics and features. Some games, like Honey Rush, deviate from the traditional game layout and provide cluster pay.

Other games like Mega Moolah and Reactoonz have huge jackpots and are part of a game series that gets better with every new release.

Rank Real money slots provider No. of slots Noteworthy games
#1 Microgaming 500+ Mega Moolah, Immortal Romance, Thunderstruck, Avalon, Wanted Dead or Alive
#2 NetEnt 200+ Starburst, Gonzo’s Quest, Aloha Cluster Pays
#3 Play’n Go 280+ Reactoonz, Book of Dead, Honey Rush, Viking Runecraft, Wild North
#4 Playtech 500+ Age of Gods, Green Lantern, Goblin’s Cave
#5 IGT 250+ Cleopatra, Treasures of Troy, Pharaoh’s Fortune, Da Vinci Diamonds
#6 Barcrest 100+ Ooh Aah Dracula, Elvis Top 20, Merry Money
#7 Eyecon 80+ Fluffy Favourites, Piggy Payout, Beez Kneez
#8 Pragmatic Play 250 Gates of Olympus, John Hunter and the Tomb of the Scarab Queen, The Dog House
#9 Quickspin 100+ Big Bad Wolf, Mighty Arthur, Eastern Emeralds
#10 RTG 182 Achilles, T-Rex, Pay Dirt!

#1 Microgaming/Games Global

Microgaming stands out as a titan in UK slot sites, with a vast array of video slot games that cater to every type of player, and record-breaking online jackpots, available at prestigious casinos like 32 Red, Grand Ivy, and Fun Casino.

Microgaming slots range from adventure-filled titles to relaxing, classic themes, whatever Microgaming casino you choose.

#2. NetEnt

A provider that consistently delivers dazzling games to UK slot sites is NetEnt. Their engaging video slots and jackpots like Divine Fortune are a mainstay in casinos like MrQ or mr.Play Casino.

The graphics, soundtracks and bonus features make NetEnt slots sites a top choice for UK players seeking premium online gaming.

#3. Play’n Go

Play’n Go revolutionized the UK slot site market with captivating TV-inspired themes and grid slots. Play’n Go slots like Book of Dead, Fire Joker, and Reactoonz have become must-plays for UK players.

Enjoy these thrilling games at the top Play’n Go casinos such as Betway, LeoVegas, and Casumo.

How to Play Slots Online Responsibly

How-to-Play-Slots-Online-Responsibly

  1. Try the game for fun (if possible)
  2. Give the game a test run with a small budget (£10-£50)
  3. Place small bets
  4. Ask a casino support assistant to help you set betting limits
  5. Don’t start placing larger bets to compensate for losses
  6. Play with a budget that you can afford to lose
  7. Set gaming sessions (if possible)
  8. Quit while you’re ahead
  9. Don’t get carried away

All Slot Sites We Recommend Are Vetted by the UKGC

All-Slot-Sites-We-Recommend-Are-Vetted-by-the-UKGC

The UKGC oversees all the best online slots real money UK sites we picked. Each operator complies with its Licence Conditions and Codes of Practice (LCCP) to ensure fair and quality gaming, player security, timely payouts, adequate player dispute resolution system, and user privacy protection.

The strict gaming and player protection standards and legal parameters the UK Gambling Commission set forth control every aspect of UK slot sites. Some operators hold multiple licenses, rendering them certified in payment security, account management, and gaming quality.

Our Verdict: What to Expect from Online Slots

Set the right expectations from playing online slots. KingCasinoBonus have one key principle: approach the games responsibly and avoid chasing your losses, and you’ll have a great time! As experts, we aim to help you understand the random mechanics of online slot machines and the best ways to play them. Slots have low minimum bets and adjustable bet sizes, enabling you to stay within your budget if practised responsibly.

UK players may choose an online UK slot site for the following reasons:

  • Custom experience: With a wide variety of themes and features, online slots can satisfy a wide range of UK player preferences;
  • Beginner-friendly gambling: New casino players should start with simple games, and online slots are the most straightforward to play;
  • 24/7 availability: Compared to their local counterparts, online slots are available 24/7;
  • Mobile convenience: As they can be accessed from anywhere, they are very convenient for mobile players;
  • New slot releases: Land-based slots are the same in every UK casino, while new online slot games are released every month;
  • Engaging special features: Online real money slots possess unique symbols and game features like expanding wilds and progressive jackpots;
  • Social ways to play: Online slots UK sites often facilitate social interactions through slot tournaments.

Pros and Cons of Online UK Slots Sites

Pros

  • Guaranteed game quality
  • UKGC-licensed
  • Tailored bonuses for popular slot games
  • Quick access to content from leading developers
  • Vast choice of gaming content
  • Suitable betting limits for casual players
  • You can play slots for fun
  • Claim personalised bonuses
  • Earn points and rewards by simply playing

Cons

  • Some casinos don’t offer a mobile app
  • There’s a limited number of games on mobile casinos
  • Gaming can become addictive

Online Slots UK: Glossary of Terms for Slot Players

Slots terms you should know Definitions
Paytable Slots’ paytables are charts displaying game symbols and associated multipliers and special features.
Random number generator (RNG) Random Number Generators are the algorithms slots function on. RNGs are used to generate each round’s random outcome.
Reels The reels represent the vertical alignment of symbols spinning in slots.
Rows Rows are the horizontal alignment of the spinning slot symbols.
Paylines Patterns in which symbols match on the reels to form winning combinations.
Coin Value The value of each spin in the game in increments of £0.1, £0.2 or £0.5, £2 or lower/higher.
Gamble/double feature The option to trigger a mini-game within the slot machine and risk your winnings for a chance to double or multiply them – handle with care.
Slot game bonus features In slots bonus rounds, special symbols or combinations align to trigger them. Most popular online include free spins features, re-spins, and pick-a-bonus rounds.
Autoplay You can activate a set of 10-100 automatic spins, which may stop if you land a winning payline or trigger a bonus round.
Respins Some special symbols and patterns activate one or more extra spins at no cost in certain slots like Gonzo’s Quest or Big Bass Splash.
Tumbling reels A different slot mechanic where symbols fall instead of spinning, as in Gonzo’s Quest.
Wild symbols Special symbols that replace other symbols to generate winning combinations.
Scatter symbols Scatter symbols can appear on any reel and activate various slots bonus rounds, as in Piggy Riches Megaways and many other games.
Win-both-ways feature A feature allows winning combinations to form from left to right and right to left.
Expanding wilds Symbols that cover an entire reel or row during slots bonus rounds.
Stacked wilds Wild symbols that appear stacked on top of each other on a reel.
Matching symbols feature Slots mechanic through which the game pays out when certain symbols are arranged into a winning pattern. Big Bass Bonanza, Fishin Frenzy, Pots of Gold and even any traditional fruit machine have this feature.
Classic slots The traditional fruit machine or poker machine with 3 reels and 3 rows.
Video slots Slot games developed with a narrative and more attention to graphic detail like Rainbow Riches Megaways from Barcrest, or Microgaming’s Immortal Romance.
Progressive jackpot slot Unlike their local counterparts, progressive jackpot slots share the biggest jackpot with a large network of players, and the top prize grows with each bet placed by the game rules, until it’s finally won. Some of the most  popular progressive jackpot slots include Mega Moolah and Age of the Gods.
Daily jackpot games A popular interpretation of must-hit-by progressive jackpots, which don’t necessarily have a fixed value, but only a predetermined time when a player will randomly trigger them.
Hit frequency A metric of how frequently a slot pays out, with the average value being at 20%-30%.
Volatility A metric of how risky the game is, meaning how likely it is not to return winnings in predictable short-term patterns, but overcompensate later on – only suitable for big bankrolls.

F.A.Q.

What Is the Best UK Casino Site for Slots?

It was a hard choice to make, but when choosing the best online slot casino in the UK, Parimatch Casino takes the No.1 spot. We have listed several other alternative casinos popular for their slots, mobile versatility and bonuses and lay out their key benefits and disadvantages.

Are Online Slot Casinos Reliable?

Some rogue operators may provide pirated or untested slot games, violating international gaming standards and laws. However, if an appropriate regulator licenses the site, you have no reason to doubt the games’ fairness and reliability. A casino’s licensor ensures that all licensees offer games from reliable operators and that each gaming item is tested for fairness and random number generation (RNG).

Where Can I Find Exclusive Slots?

Some top online casinos in the UK have gaming studios that produce unique, in-house slots. A few such casinos are Bonus boss, mFortune and Mr. Spin - all providing in-house Intouch games optimised to play on mobile. Other reputable operators with in-house games include 888 Casino and Grosvenor.

Are There Any 100% No Wagering Slot Sites?

Based on our research, there's more than one. For example, Play Ojo is a no-wagering requirements slots casino, i.e., the bonuses have no wager conditions. This versatile casino has over 2,000 slots, a player-friendly gaming platform, and a mobile-compatible interface. You can find many other no wagering casino bonuses on sign-up from various online casinos in the UK. Check our page linkfff in the right panel.

What is the best online real money slots site to win money on?

Mr Q has the best payment conditions, choice of online slots, and free spin promotions for customers in the UK. The no-pay and no wager spins are an ideal offer for gamblers that wish to start with the lowest possible expenses and still make a positive bankroll. Additionally, you can receive your funds within one day. With standard £10 minimum deposit and withdrawal amounts, as well as several banking options that cover all transaction essentials, Mr Q is a finalist for online slots real money gamblers.

What slots can I play online for real money?

All selected platforms have a generous catalogue of real money slots created by renowned developers. Mr Q and Coral Casino are included among the best entries of the Microgaming casinos active within the UK. Paddy Power Games, on the other hand, appears among the most popular Play’n Go casinos. You can expect to find specific online slots, real money games, and other entries from the provider. All three entries have real money slots specific to NetEnt casinos, including the famed Gonzo’s Quest franchise.

Where to Play Rainbow Riches & Pay By Mobile?

If you’re familiar with the game, but you can’t find a decent casino to play it, we would recommend Avenger Slots casino as an option. You can also use pay by mobile to fund your casino balance. You can play at the Rainbow Riches Casino, but you can only pay with Apple Pay by mobile

Can You Hack Online Real Money Slots for Guaranteed Payouts?

The results cannot be manipulated, not even by experienced hackers. Certified online slots produced by major developers are pretty much uncrackable. They use complex algorithms and RNG to produce random results on every spin.

Does Each Spin on an Online Slot Machine Produce Random Results?

Online real money slots are software-based games using random number generators that produce a unique, unpredictable outcome on every spin based on a mathematical algorithm.

Ionut Catalin Marin is the CEO of KingCasinoBonus and a trusted authority in the UK online casino scene. With +7 years of experience in the industry, he meticulously evaluates, rates and compares online casinos to provide British players with an accurate and user-focused list of the best casino sites and bonuses.
Vlad George Nita is the Lead Editor at KingCasinoBonus, bringing extensive knowledge and expertise of online casinos & bonuses. He applies his extensive industry knowledge into providing valuable, accurate casino data and dependable recommendations of bonuses strictly based on UK players' requirements.