Best Payout Online Slots With High RTP (up to 98%) for Better Chances to Win

We love playing slots and winning money, so we wanted to find out which slot games pay the most and more often. Our top picks for the highest payout RTP online slots (after several months of testing) include Vic, Barz, Rialto, bet365, and Mr.Play. The best winning slots include Blood Sucker, Book of Ra Deluxe, and Mega Joker – along with leading titles from NoLimit City and NetEnt.

The Best Payout Online Slot Casinos for UK Players

Which are the best payout casinos and 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).

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 (Exc PayPal) Spin and Win offer Code SPINGMBLR. 100% Bonus up to £500 on selected slots, Min deps £10, claimable once. 40x wagering on the sum of deposit + bonus applies. Max convertible 5x bonus amount received. 18+. Valid until further notice. Full T&Cs apply.


    Read Spin And Win Casino Review
  • 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.

    Read Grosvenor Review
  • Rialto Casino
    4.3 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.
    Read Rialto Casino Review
  • 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.

    Read Mr Play Review
  • 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

    Read Spin Rio Review
  • 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

    Lucky Vip code is LVGMBLR. Bonus Terms for new UK casino users: 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. Registration Required. The bonus code 365GMBLR can be used during registration, but does not change the offer amount in any way.

    Read Bet365 Review
  • FruitKings Casino
    4.7 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.

    Read All British Casino Review
  • 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.

    Read Casimba Casino Review
  • 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.

    Read Monopoly Casino Review
  • 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 searching for 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.

Best Slot Sites UK

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

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

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:

UK Slot Sites 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 Online Slots 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 winaways.
  • 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 pay lines 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 good 99.07% RTP and has an unusual setup. 10 sections, each with 3 symbols, give 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 all comers. A Super Metre Mode 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 is 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 a 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 maximum win of £60,000, and you only need 2 Jokers for the mystery win in bonus mode. A cheeky classic.

Wild Cauldron (Quickspin)

Among the best payout online slots in the UK, the Wild Cauldron game arrived in 2020 and is a 6-reel, 4-row stonker with 4,096. The RTP % of 96.06 is not 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

The 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 pay lines, this high-volatility thrill ride 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 pay lines, but it 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 more chances to win without additional stakes.

Cleopatra: Balancing Frequency & Features

Cleopatra presents a medium volatility video game, balancing frequency and size of wins. It features five reels and 20 pay lines, 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 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 117,649 ways to win across six reels. Its Return to player payout rate is a commendable 96.24%, featuring 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).

Best Real Money Slot Payouts

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:

Best Payout Online Casino FeaturesPayout 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%
Explore the newest game releases from 2024 here.

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 for its high RTP and 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 and 10bet are the best, or better to say, the highest payout casinos in the UK as of 2024. You can even check the casino’s audited payouts for the best bonus deals. Spin at an online casino where they offer an easy withdrawal process; check out these sites.

How RTPs Are Determined

Every licensed UK online casino has a payout percentage programmed into the game. This figure is theoretical and 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 casino keeps the remainder. In this case, the casino would keep £3 of every £100 bet on that particular slot. Read about some slot strategies that may help you increase your chances of winning.

The best online slot sites only feature games with high payout percentages. Bet365, Betfred, and 10Bet are among the best payout casinos in the UK. You might find bonus slots with RTPs of 98% or big-money progressive jackpots that pay out huge sums. They also offer apps, several popular payment methods and bonuses to new customers.

Best Real Money Progressive Jackpot Slots in the UK

Progressive jackpots offer slot players the chance to win millions of pounds on a single spin. Progressives are 100% legal in the UK, and the best online casinos offer a great range of games to play for real money. Discover why UK gamblers love progressive slots in 2024. We’ll even show you which great casinos offer big prizes, especially on daily jackpot titles.

Mega Moolah progressive slot

Online slots usually have a fixed jackpot, which you can win by hitting five-of-a-kind or triggering a bonus feature. Progressive slots are different—they have a jackpot that keeps climbing until one player takes it down.

Progressive real money slots are usually linked across multiple online casinos. Every time you play, a tiny fraction of your stake is added to the jackpot pool. The remainder goes towards playing the slot itself. The more casinos that share a game, the bigger the jackpot gets. Plus, some progressive jackpot slots share the same prize pool.

  • Standalone Progressive Slots: A standalone progressive is a single slot that offers an exclusive jackpot. You’ll have to play that slot at a particular casino to win the big one.
  • Progressive Slots Series: Some developers offer a series of progressive slots that all share a single jackpot. In games like Playtech’s Age of the Gods series, you can win one of four separate jackpots depending on how the bonus game pans out.
  • Age of the Gods Mystery Jackpot (Playtech)
    Games include: Age of the Gods, Age of the Gods Medusa & Monsters, Age of the Gods Epic Troy
  • PowerPlay Jackpot (Playtech)
    Slots include: Book of Kings PowerPlay Jackpot, Blazing Bells PowerPlay Jackpot, Storms of Ice PowerPlay Jackpot
  • DC Super Heroes (Playtech)
    Games include: Justice League, Batman and Catwoman Cash, Superman

Where to play top payout slots online: best sites listed (UK)

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

Online Slots FAQs

What is an RTP?

This refers to the Return-to-Player percentage, the percentage of every £100 played on the game returned to players. The higher the percentage, the better the 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 slot machines featuring fruit symbols and cherries, bars, and 7s. The game allows up to 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.