2024's Best Slot Sites UK & Top UK Online Slots with High RTP

Navigating through the myriad of online slot sites in the UK can be daunting. To simplify your search, we’ve compiled a comprehensive guide to the best slot sites known for their high RTP (Return to Player) and numerous winning lines. Our recommendations are based on direct experiences with these sites, ensuring they offer top-notch slot games, attractive bonuses, and swift payouts.

Looking for the top UK slot sites that payout real money? Our top picks for the highest payout RTP slots include Vic, Barz, Rialto, bet365, and Mr.Play. What are the best winning slots of 2024? We selected: Blood Sucker, Book of Ra Deluxe, Mega Joker – along with leading titles from NoLimit City and NetEnt.

Best Online Slot Sites in the UK (2024):

Which are the ultimate sites for online slot gameplay in the UK? Our top recommendations include Spin Rio, bet365 slots, Grosvenor, Amber Spins, and the new Vic site (grab new games with bonus code VICGMBLR).

Disclaimer: Please note that RTP can vary and is subject to change; we are not responsible for updates or modifications made by third parties.

Slot Site
Bonuses for UK
Play High Payout Slot Games
  • Spin And Win Casino
    4.8 rating based on 1 rating
    Spin & Win Casino £250 Deposit Bonus + 100 Spins. Use code SPINGMBLR

    1st dep offer Code SPINGMBLR. Minimum 1st dep of £10 to get £100% up to £250 on selected match slots & 100 Free Spins (FS) on Blueprint slots at 0.20P. Deposit Bonus Playable on selected Slots. 40x wagering requirement (Dep + Bonus) & MCR x5 for Bonus. FS and FS winnings are playable on Blueprint slots only, FS: 50xWR & Max win £50. Full T&Cs apply.


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  • The Vic Casino
    4.9 rating based on 1 rating
    New Vic Casino Bonus: up to £200 + 100 free spins. Use code VICGMBLR
    New players only. Code VICGBMLR required on a minimum deposit of £20 for up to £100 bonus + max 20 Free Spins valid for 7 days. Bonus playable on *selected slots*. Wagering requirements on bonus is 50x (deposit+bonus), max convertible rate from bonus is 5x. Free spins & winnings playable selected *Lady’s Charm Deluxe*, wagering requirements on free spins is 35x, maximum convertible amount from free spins is £30. 18+ only. Valid until further notice. Full T&C’s apply.
    Read The Vic Casino Review
  • Grosvenor
    5.0 rating based on 1 rating
    Grosvenor Casinos Bonus: Deposit £20, Play with £50

    New customers only. Min deposit £20 (exc PayPal). Max bonus £30, bonus amount non-withdrawable, playable on selected games only. 30x wagering for £30 bonus. Expires within 30 days. Max win £2,000. *T&Cs apply.

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  • Rialto Casino
    5.0 rating based on 1 rating
    Rialto Casino: 100% match bonus up to £300 + 200 free spins for slots
    Welcome bonus package on first 3 deposits 1st Dep. Min £20. USE CODE RIALTOGBMLR. Max bonus £100. 40x wagering (bonus & deposit). max bonus to cash 5x. Free Spins: 50 Free spins. 25x wagering. Max bonus to cash £25. Claim once. See full T&Cs for 2nd & full T&Cs for 3rd Deposit offers. Full T&Cs apply.
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  • Casushi Casino
    4.9 rating based on 1 rating
    Casushi Casino UK: Get 100% Deposit Bonus up to £50 + 50 Spins

    New accounts only. Minimum first deposit of £20 required to participate. Maximum promotion amount per player is £50 Bonus and 50 bonus spins (30 spins on day 1, 10 spins after 24 hours and a further 10 spins after 48 hours). The welcome offer is not available on pre-paid cards or e-wallet (Neteller and Skrill) deposits. The maximum cash out from any individual bonus is £250. Any cash out over this amount will be adjusted manually down to £250. Casushi bonus spins will expire 48 hours after being credited. Full terms apply.

    Read Casushi Casino Review
  • Mr Play
    4.9 rating based on 1 rating
    Mr Play Casino Bonus: Get 100 Free Spins + £200 Deposit Bonus

    Only UK players. After first deposit made, customers will get + 20 Spin for the next 4 days: 1st day after First Deposit: 20 Spins of Finn and the Swirly Spin 2nd day after First Deposit: 20 Spins of Book of Dead 3rd day after First Deposit: 20 Spins of VIP Black 4th day after First Deposit: 20 Spins of Aloha! Cluster Pays Winnings won with spins that require deposit, have to be wagered 35x. Bonuses that require deposit, have to be wagered 35x.

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  • Spin Rio
    4.8 rating based on 1 rating
    Spin Rio Casino: Get up to £200 + 100 Free Spins

    New depositing UK players only. Min. deposit £10. max bonus of £200 in 3 deposits, valid 21 days, on selected slots; 35x wagering on the sum of deposit & bonus applies.  Country Restrictions and Full T&Cs apply. Code: BGRIO

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  • Magic Red Casino
    4.9 rating based on 1 rating
    Magic Red Casino Bonus: Get up to 35 GBP Match Bonus + 50 Spins

    New Players Only. Spins are given as follows: 50 Spins upon a first deposit of minimum £10. Spins may only be used in specific games. The game allowed: Book of Dead. Wagering Requirement: 35x. Spins expire after 24 hours. Promotion available for 72 hours. Maximum winnings from spins: £100. Terms and Conditions apply.

    Read Magic Red Casino Review
  • Lucky VIP
    4.9 rating based on 1 rating
    LuckyVip Casino: Up to £100 Bonus + £7 on Live Casino. Use code: LVGMBLR

    Minimum 1st dep of £20 to get £100% up to £100 on selected match slots; 40x wagering requirement (Dep + Bonus) & MCR x5 for Bonus + Guaranteed Live bonus wheel up to £7. Live Bonus and Live Bonus Winnings are playable on selected Live Games. 20x WR, convertible to real cash x5 bonus amount. Full T&C’s apply.

    Read Lucky VIP Review
  • Bet365
    5.0 rating based on 1 rating
    Bet365 Casino: Stake £10, Get 50 Bonus Spins. Promo Code “365GMBLR”

    The Bet365 sign up code is 365GMBLR . New customers only. Min deposit £10. Bet Credits available for use upon settlement of bets to value of qualifying deposit. Min odds, bet and payment method exclusions apply. Returns exclude Bet Credits stake. Time limits and T&Cs apply. The bonus code 365GMBLR can be used during registration, but does not change the offer amount in any way.

    Read Bet365 Review
  • FruitKings Casino
    4.8 rating based on 1 rating
    Fruitkings Bonus: up to £50 + 100 free spins

    New Players Only. 100% Bonus On First Deposit Up To £50 & 100 Bonus Spins (50 Spins On Day 1, 25 On Day 2, 25 On Day 3) For Book Of Dead Slot Only. Min First Deposit Of £10. Max Bonus £50. Max Bonus Bet £5. Max Bonus Cash-Out £250. 40x Wagering Requirements. Bonus Expiry 30 Days. Bonus Spins Expire After 48 Hours. Game Restrictions Apply. Further Terms Apply.

    Read FruitKings Casino Review
  • All British Casino
    4.7 rating based on 1 rating
    All British Casino: 100% Deposit Bonus up to £100 + 200 Free Spins

    Welcome bonus for new players only. Maximum bonus is 100% up to £100 + 200 free spins. Min. deposit is £20. No max cash out. Wagering is 35 x bonus. Max. bet with an active bonus is £5. Eligibility is restricted for suspected abuse. Cashback is cash with no restrictions. Skrill & Neteller deposits excluded. Cashback applies to deposits where no bonus is included. T&C’s apply.

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  • Casimba Casino
    4.7 rating based on 1 rating
    Casimba Bonus: £200 deposit bonus + 50 bonus spins

    New players only. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £200 plus 50 bonus spins on your 1st deposit, 50% match up to £50 on your 2nd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Affordability checks apply. Terms apply. Please gamble responsibly.

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  • Monopoly Casino
    5.0 rating based on 1 rating
    Monopoly Casino Offers 30 Free Spins or £50 on Free Bingo

    New members only, must opt-in. Min £10 deposit & wager. 30 day expiry from deposit. Free Spins: on MONOPOLY Paradise Mansion. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply.

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  • PlayFrank Casino
    4.6 rating based on 1 rating
    PlayFrank Casino Bonus: Get £100 Deposit Match + 50 Free Spins

    UK customers only. The PlayFrank bonus is valid for new players only without an expiration date. The Welcome Bonus can only be claimed only once. No promo code is required. The first Welcome Bonus is a 100% Bonus up to £100 and 50 Bonus Spins. To claim the PlayFrank casino. Bonus you need to make a min deposit of £20. Deposits made via Skrill or Neteller are not eligible for the Bonus offer. The Bonus Spins will be credited on Big Bass Bonanza. The Free Spins will be credited instantly. The Bonus needs to be wagered 35 times before the Bonus Balance can be converted to your real money balance. Maximum bonus bet amount is £4.00.

    Read PlayFrank Casino Review
  • WinOMania
    4.4 rating based on 1 rating
    WinOmania Casino: Get 100 Free Spins + up to £100 Match Bonus

    New UK players. 1st deposit only. Min deposit £10. Max bet with bonus £2. Max bonus £100. x40 wagering. Bonus spins valid for selected games only. x40 wagering on free spin winnings. Expire within 24 hours. User Agreement & T&C apply.

    Read WinOMania Review
  • Bally Casino
    4.6 rating based on 1 rating
    Bally Casino UK Bonus: Play £10 Get 30 Spins
    New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. Free Spins: on Secrets of the Phoenix Megaways. Spins value: 20p each. #Ad.
    Read Bally Casino Review

Are you in search of the highest return, or perhaps the thrill of chasing the largest jackpots appeals more to you?

For some, the appeal lies in the aesthetics — games that offer the best graphics, soundtracks, and immersive experiences. Regardless of your preferences, there’s certainly a slot game that suits your taste.

The best online slots in the UK, renowned for their high RTP (Return to Player), can be categorized into four main types: 3-reel classics, multi-reel, video slots, and progressive jackpot slots. These games feature diverse paylines, ranging from 25 to 100, and come packed with bonus features, 3D animations, and more.

At the core of the gaming experience are value and excitement. Let’s explore 10 of the top online slots known for their exceptional RTP percentages, providing top payouts. All of these high-paying real money games are available across desktop and mobile platforms, compatible with both iOS and Android devices.

Best Slot Sites UK

Explore the Best UK Slot Sites for Highest RTP and Top Bonuses

Discover the top UK casinos offering slots with high RTP and generous promotions, from 100 free spins to up to £500 in deposit bonuses. Here’s where to find the best payout slots and exciting bonuses:

Slot SiteHigh Payout SlotsBonus Offer
Vic UK Casino“Vikings Go Berzerk”, “Mustang Gold”Up to £200 + 100 free spins. Code: VICGMBLR
bet365 Casino“Book of Dead”, “Starburst”50 Bonus Spins. Promo Code: “365GMBLR”
Rialto Casino“Rialto Reels”, “Casino Royale”100% match up to £300 + 200 free spins
Spin & Win Casino“Gonzo’s Quest”, “Fire Joker”£250 Deposit Bonus. Code: SPINGMBLR
Mr Play“Legacy of Dead”, “Mega Moolah”Up to £200 + 100 free spins
Casimba“Thunderstruck II”, “Avalon II”100% welcome up to £500 + 50 spins
All British Casino“Bonanza”, “White Rabbit”100% match up to £100 + 10% cashback
Dream Vegas“Immortal Romance”, “Mega Fortune”100% deposit up to £400 + 50 spins
Magical Vegas“Double Bubble”, “Secrets of the Phoenix”100% match up to £300. Code: MVCGMBLR

Win more with top slot bonuses — Discover up to 1500+ free spins from our curated list of top 20 sites.

Always review the terms and conditions of each bonus offer, as they typically require a minimum deposit and include wagering requirements. For those seeking higher stakes, consider casinos like Spin and Win, known for their high-limit slots and lucrative games.

Play slots at the best UK bonus sites with high RTP that offer good promos: from 100 spins to up to £500 in deposit bonus.

Top 10 Best Online Slots in the UK with the Highest RTP

Slot GameDeveloperRTP %Max WinPaylines
Ugga BuggaPlaytech99.07%No Jackpot10
Mega JokerNetEnt99%Bet DependentVaries
Blood SuckersNetEnt98%1,014x25
JokerizerYggdrasilUp to 98%£60,000Varies
White Rabbit MegawaysBig Time Gaming97.77%Megaways DependentUp to 240,000
Dead or Alive 2NetEnt96.82%Over 111,000x9
Thunderstruck 2Microgaming96.65%8,100x243
Buffalo KingPragmatic Play96.06%Bet Dependent4,096
Wild CauldronQuickspin96.06%Bet Dependent4,096
Book of Ra DeluxeNovomatic96%Bet Dependent10

Highlighted Features of Top RTP Slots

  • Best Megaways Slot: “Bonanza Megaways” at Monopoly Casino, featuring dynamic reels and multiple win ways.
  • Most Innovative Slot: “Gonzo’s Quest,” known for its Avalanche feature where symbols fall instead of spin.
  • Highest RTP Slot: “Mega Joker,” known for its high RTP offering better long-term payouts.
  • Best Progressive Jackpot Slot: “Mega Moolah,” known for turning players into millionaires with its jackpots.
  • Best Branded Slot: “Game of Thrones,” offering an immersive experience based on the famous TV series.
  • Best Classic Slot: “Starburst,” popular for its simple, vibrant gameplay.
  • Best 3D Slot: “Betsoft’s Slotfather,” celebrated for its 3D graphics and storytelling.
  • Best Mobile Slot: “Book of Ra Deluxe,” optimized for engaging mobile gameplay.
  • Best Fantasy-Themed Slot: “Lord of the Rings,” for an epic Middle-earth adventure.
  • Best Horror Slot: “Blood Suckers,” ideal for a thrilling, spooky experience.

Note: RTP % indicates the expected payout for every £100 wagered. Higher RTPs provide better value for the player. New slot sites like Moon Games and Vegas Spins offer high payout slots and promotions like up to 777 Free spins.

Blood Sucker

best payout slots UK
best payout slots UK

This vampire-themed classic from NetEnt boasts a 98% RTP and is a low-volatility favourite for punters everywhere. There are 5 reels and a 1,014x maximum win. Match three or more symbols across one of the twenty-five fixed paylines to land a win. The famous Vampire Slaying Round is unlocked when you land 3 of the stake and hammer bonus symbols. A gory, ghoulish giant of the genre and great value!

Ugga Bugga

UK best online payout slots

Ugga Bugga from Playtech has a crazy 99.07% RTP and has an unusual set-up. 10 sections, each with 3 symbols in them gives the game a unique feel. The only way to win is to line up 3 of the same symbols in one section. So essentially you get 10 times to win, every spin. There are chances to hold and spin, giving Ugga Bugga a pleasant retro feel. Symbols include masks, drums and hats. There is no jackpot and volatility is low, but Ugga Bugga offers new punters fantastic value and a great foot in the online casino door.

Mega Joker

best RTP online slots

Another NetEnt creation, this all-time favourite has a staggering 99% RTP. The background and general feel is camp and fun, with potted palms and vintage wallpaper added to the gaiety.  Symbols include the classic cherries, bells and watermelons. The minimum bet is anything from 1p to £2, so Mega Joker will suit allcomers. There is a Super Metre Mode that allows you to bet up to 200x your coin value per spin. 

Thunderstruck 2

UK top online slots with high payouts

This high payout slot from Microgaming has a 96.65 RTP% and is in the 5-reel, 3-row classic set-up. Bonus features like Wild Storms and the Great Hall of Spins can help you reach a maximum win of 8,100x. The theme is Norse mythology, so expect Thor to pop up and cause mayhem.

Book of Ra Deluxe

book of ra deluxe best payout slot

One of the best payout online slots by Novomatic is another for-the-ages game that pops up everywhere, with a highly-respectable 96% RTP. Design-wise it a classic 5-reel, 3-row, 10 payline set-up and punters have fallen for the Egyptian-themed design, replete with symbols of scarab beetles, pharaohs and Horus. The Bonus round contains the Expanding Symbol that can cover three symbol positions. You’ll go ga-ga for Ra. 


best payout online slots UK overview

This slot with fast payout percentage comes from the Yggdrasil stable and has an RPR of up to 98%. Carnival-based, Jokerizer comes in 22 languages and has an enhanced portrait mode for mobile devices, making it ideal for gaming-on-the-go. It is high-volatility, has a £60,000 maximum win and you only need 2 Jokers for the mystery win in bonus mode. A cheeky classic.

Wild Cauldron (Quickspin)

Among best payout online slots in the UK, the Wild Caildron game arrived in 2020 and is a 6-reel, 4-row stonker with 4,096. The RTP % of 96.06 is none too shabby either. Play the bonus round and you can expand the game to 8 rows and over 200,000 ways to win! Look out for monsters and potions in this bubbling beauty.

White Rabbit Megaways

Next fast payout slot title by Big Time Gaming is a trip into Alice in Wonderland world and has a very decent 97.77 RTP %. With potentially over 240,000 paylines, this is a high-volatility thrill ride that takes you through the looking glass. The reels are full of grinning Chesire Cats and the Queen of Hearts. Curiouser and curiouser. Here is a list of the best Megaways slot sites.

Dead or Alive 2

This is a new riff (2019) on the gunslinger classic from NetEnt, with a very decent RTP % of 96.82. It is only a 5-reel, 3-row structure with 9 paylines, but can pack an over 111,000x pay-out punch. There are scatter wins, sticky wilds and the famous High Noon Saloon and Train Heist Free Spin games. 

Buffalo King

Looking for the top payout online slots UK casinos can offer? This is another wild-west classic from Pragmatic Play. With an RTP % of 96.06, punters love the option of personalising their game, via the player interface. There are 6-reels, 4-rows and stakes can range between 40p and £60. The graphics and vividness of the background are superbly rendered and Eagles, coyotes and cougars abound in this high-volatility thriller. 

Blazing Bison Gold Blitz: High Volatility & Rich Features

Blazing Bison Gold Blitz is a high volatility video slot, providing an opportunity for massive wins, although they may be less frequent. It offers six reels with a whopping 4096 ways to win. With an RTP of 96.00%, this game provides a favourable return rate. The real attraction, however, is the game’s features. Wild symbols can substitute for other symbols to create winning combinations, and Free Spins offer the opportunity for more chances to win without additional stakes.

Cleopatra: Balancing Frequency & Features

Cleopatra presents a medium volatility videoslot game, offering a balance between frequency and size of wins. It features five reels and 20 paylines, with an RTP of 95.02%. Cleopatra video slot also offers several exciting features. Multipliers can exponentially increase your wins, Free Spins provide additional chances to win without extra bets, and Wilds can fill in for other symbols to create winning combinations. The best gambling websites for playing video slots that are on our list are: Unibet, bet365, Spin Rio, and GrosvenorCasinos.

Who Wants to be a Millionaire Megaways: Massive Wins and Engaging Gameplay

For those who enjoy the thrill of chasing substantial rewards, Who Wants to be a Millionaire Megaways is an excellent video slot for real money at bet365 Games. This high volatility slot offers a generous 117,649 ways to win across six reels. Its Return to player payout rate is a commendable 96.24%, and it features exciting Megaways, Scatter Feature, and Wilds.

Rainbow Riches: Medium Volatility Slot with a Taste of Luck

Rainbow Riches is a medium volatility slot offering frequent wins. With 20 paylines on 5 reels and an RTP of 95.00%, it ensures that every spin is filled with possibilities. The game also offers Free Spins as an additional feature, enhancing the gaming experience. Where to play? Visit Spin and Rio or play slots at new sites like Winomania (with free spins).

Top UK Online Casinos: Best Real Money Slot Payout Rates 2024

If you’re looking for the best slot sites where you can win real money, here’s a detailed table showcasing top online casinos renowned for their impressive payout slots and games:

Online Casino SiteFeaturesPayout Rate (RTP %)
bet365 UK CasinoBest payout slots & gamesTop industry RTP
10bet CasinoQuick withdrawals97.01%
Unibet Online CasinoHighest payout rate96.5%
Grosvenor CasinosHighest payout casinoApprox. 97%
888CasinoNotable for best payouts96.2%
32Red CasinoReliable payouts95.51%
Betfred CasinoHigh RTP slots96.5%
Betway CasinoSolid payout performance96.36%
Grand Ivy CasinoCompetitive RTPs96.5%

This guide helps you identify which online casino sites offer the best payout percentages for slots, allowing you to make informed decisions about where to play to maximize your chances of winning real money. Each site is recognized not only for its high RTP but also for other player-friendly features like quick withdrawals and reliable gaming experiences.

These sites are renowned for offering some of the best payout slots in the industry. Enjoy low house edge roulette and slots with RTPs over 96%. bet365 casino, 10bet are the best or better to say highest payout casinos in UK as per 2024. You can even check the casino’s audited payouts to find the best bonus deals around. Spin at online casino where they offer easy withdrawal process, check out these sites.

How RTPs Are Determined

Every licensed in UK online casino has a payout percentage programmed into the game. This is a theoretical figure based on millions of spins over time.

For instance, a slot with an RTP of 97% will pay out on average £97 for every £100 paid in. The remainder is kept by the casino. In this case, the casino would keep £3 of every £100 bet on that particular slot. Read about some slot strategies that may probably even help you increase your chances of winning.

The best online slots sites only feature games with high payouts percentage. bet365, Betfred, 10Bet are among the best payout casinos in the UK to play at. You might find bonus slots with RTPs of 98% or big-money progressive jackpots that pay out huge sums. They all also offer apps, a number of popular payment methods and bonuses to new customers.

best rtp casino slots
Online Slots FAQs
What is an RTP?

This refers to Return To Player percentage. This is the percentage of every £100 played on the game that is returned to players. The higher the percentage, the better value for players.

Are all the listed games safe to play?

Yes, not only are all the software companies and participating casinos licensed and registered in the UK by the Gambling Commission, they also employ the latest SSL firewall and encryption technology.

Casino games with the best RTP payout odds?

Blackjack: 99.2%, Roulette: 96.1%. Slots: 87.95% (Starburst and Book of Dead – slot games with best payouts).

What is 10 x Times Wins?

10 Times Wins Online Casino Slot, a game by Rival Gaming, is a delightful imitation of its predecessor, 10 Times Pay. It recreates the exciting ambience of a real casino with its sound effects and spinning reels, much akin to the Vegas classic. This game upholds the enduring appeal of traditional islot machines featuring fruit symbols and the cherries, bars, and 7s. The game allows a maximum of three lines to be activated, with coin sizes ranging from $0.01 to $5. Players can bet up to three coins per line, with the highest bet being $45.

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