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Best Payout Slots - Top Payout Online Slots UK

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TopRatedCasinos.co.uk is dedicated to helping customers find the best place to play online. Your safety and well-being is a priority, which is why all of our expert casino reviews are 100% honest and unbiased, and we highlight the key terms and conditions of every casino bonus we advertise. Whilst we accept commission from the casinos on our list of recommendations, and this may affect where they’re positioned on our lists, we only recommend casinos that we truly believe are safe and fair.

TopRatedCasinos.co.uk is dedicated to helping customers find the best place to play online. Your safety and well-being is a priority, which is why all of our expert casino reviews are 100% honest and unbiased, and we highlight the key terms and conditions of every casino bonus we advertise. Whilst we accept commission from the casinos on our list of recommendations, and this may affect where they’re positioned on our lists, we only recommend casinos that we truly believe are safe and fair.

When it comes to online casinos, slots are known to offer the highest potential winnings of all games. We’ve lined up a list of the very best slots to play for high payout percentages—otherwise known as high RTP—so you can easily locate the most generous games on the market. 

 

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A few lucky players turn low-stakes spins into big wins, but progressive jackpot games aren’t the highest paying slots by frequency. 

We’ve also covered exactly what it is that makes a high paying slot, as well as how to identify them so that you can easily find and enjoy the highest payout slots at online casinos.

The 10 Best RTP Slot Games - Our Picks - May 2024

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Rank Slot Game Reels Paylines VARIANCE RTP Claim Bonus
1
Reels
3
Paylines
5
VARIANCE
High
RTP
99%
Claim Bonus
at All British Casino
Developed by NetEnt, and with an incredible return to player (RTP) rate of 98.9%, Mega Joker is comfortably one of the best payout slot games for UK players. The 98.9% RTP rate is well above the industry average, and it's a video slot with low variance. Payout rates are frequent, but the prizes tend to be small when they land. Mega Joker has a 3x3 playing grid, five paylines, and a maximum win of £30,000. Mega Joker slot review.
AVAILABLE AT:
2
Reels
10
Paylines
100
VARIANCE
Medium
RTP
98%
Claim Bonus
at 32Red
RTP rates on Barcrest’s Rainbow Riches Reels of Gold vary according to how bold players are in their wagers. Any bet under £2 is considered conservative by this video slot, generating an RTP of 92%; wagers higher than this mark steadily raise the RTP to 96%, while the bravest wagers will push the RTP up to 98%. With a jackpot of 500x the stake and 100 different paylines in play, this leprechaun-themed classic is a favourite of many online casino players. Rainbow Riches Reels Of Gold slot review.
AVAILABLE AT:
3
Reels
5
Paylines
15
VARIANCE
High
RTP
97.04%
Claim Bonus
at Play Frank
NetEnt’s Steam Tower comes with five reels, 15 paylines, and an RTP of 97.04%, making it one of the best paying slot games in the UK. Bet limits range from £0.15 to £150, with the biggest jackpot win paying out at 2,000x the stake. During the free spins bonus round – triggered by stacking Wild icons – all bet lines are subject to the in-play multiplier, which updates prior to each free spin and according to the level players are on. Steam Tower slot review.
AVAILABLE AT:
4
Reels
5
Paylines
243
VARIANCE
High
RTP
96.86%
Claim Bonus
at Play Frank
In recent years, Microgaming’s Immortal Romance has been one of the best slots for winning. There are 243 different ways to win on this 5x3 video slot, producing an RTP rate of 96.8%. Wagers range from 30p to £30, with a jackpot payout of 12,150x the stake. Immortal Romance is a high variance slot – big wins are extremely hard to come by, and players should expect frequent but smaller payouts instead. In fact, Immortal Romance’s hit frequency of 31.21% means that on average, players will find a winning combination almost every three spins.
Immortal Romance slot review.
AVAILABLE AT:
5
Reels
6
Paylines
10
VARIANCE
Medium
RTP
99.07%
Claim Bonus
at Spin Rio
Playtech’s Ugga Bugga is a 2013 slot with a massive RTP rating of 99.07%. Although this RTP is way above the average, Ugga Bugga is a low volatility slot, meaning that payouts are frequent but small. This slot game has a unique layout, with icons appearing on a 10x3 grid, generating a maximum payout of 1,000x the stake. With a wager range of £0.10 to £250, this means players can stand to win a max jackpot of £250,000.
AVAILABLE AT:
6
Reels
5
Paylines
10
VARIANCE
Medium
RTP
99%
Claim Bonus
at All British Casino
2015’s Ooh Aah Dracula by Barcrest is a ten payline, medium volatility slot that takes place on a 5x3 grid. Players wager coins rather than cash in this game, with betting ranges stretching from 0.01 to 50, and a max win of 250,000 coins. The game incorporates two RTP rates: for the base game this stands at 96%, but if players sink their fangs into the High Roller bonus, the RTP is bumped all the way up to an impressive 99%. Ooh Aah Dracula slot review.
AVAILABLE AT:
7
Reels
3
Paylines
5
VARIANCE
High
RTP
98.9%
Claim Bonus
at Barz
NetEnt’s Jackpot 6000 is a nostalgic nod to the fruit machines of the past, seemingly taking place in a physical casino. Released in 2014, this is a high volatility slot with five paylines and a base RTP rate of 95%. Betting limits are strict, with a maximum bet of £2 and a maximum payout of 6,000 coins. If players want to make use of the slot’s Supermeter mode, they’ll raise the RTP to 98.9%. Jackpot 6000 slot review.
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8
Reels
5
Paylines
9
VARIANCE
Low
RTP
98.1%
Claim Bonus
at Play Frank
The Catfather aligns Garfield with Don Corleone in this unusual slot by Pragmatic Play. The game was released in 2016 to much acclaim, with players enjoying the quirky theme and high RTP rate of 98.1%. The Catfather is a low volatility slot with nine paylines that takes place on a 5x3 grid, where all kinds of felines look to build winning combinations. Pragmatic even had fun with the betting limits, which begin at £0.09 and rise to £45; max payouts are set at 5,000x the stake. The Catfather slot review.
AVAILABLE AT:
9
Reels
5
Paylines
25
VARIANCE
Low
RTP
98%
Claim Bonus
at Rialto Casino
NetEnt’s gothic-themed Blood Suckers is considered one of the best games in recent online casino history. Released in 2013, Blood Suckers’ strong theme and high RTP of 98% has endeared this game to slot fans. The game has a low volatility rating and there are 25 paylines on the 5x3 grid. Bets can be placed between £0.25 and £50, and there’s a maximum payout of 30,000 coins.
AVAILABLE AT:
10
Reels
5
Paylines
10
VARIANCE
High
RTP
98%
Claim Bonus
at LeoVegas
This high volatility slot from Yggdrasil is known for being one of the best payout slots available. Jokerizer features an RTP range of 88-98%, a £60,000 maximum win, and 10 paylines across its 5x3 reel structure. Hitting a win sends players to the Jokerizer mode, with the chance to land a mystery win. If you secure two joker symbols during this round, the mystery prize will drop with a potential 6,000-coin payout. Bets range from 10p to £2. Jokerizer slot review.
AVAILABLE AT:

Casinos with High Paying Slot Games - Quick Picks

💎 Best Payout Slot with Highest RTP Mega Joker
🤑 Best Payout Slot for Jackpots Ugga Bugga
🎁 Best Payout Slot for Bonus Rounds Steam Tower
🎰 Best Payout Slot for Free Spins Rainbow Riches
☝️ Best Payout Slot for High Variance Jackpot 6000
👇 Best Payout Slot for Low Variance The Catfather
👌 Best Payout Slot for Medium Variance Ooh Aah Dracula
Best Payout Slot for Paylines  Immortal Romance 

What Do We Class as a High Payout Slot?

We define a high payout slot as one with a return-to-player (RTP) percentage above 96%. In its simplest terms, this figure means players can generally expect to receive £96 back from every £100 wagered on one specific game. 96% is the average payout rate in the realm of online slots, so we classify anything above the median as being favourable to players.

It’s important that our readers don’t overstate this favourability here. When a slot is in the testing phase, RTP percentages are calculated over millions of simulated spins, which makes it likely for individual playing sessions to deviate from this mark, sometimes significantly. After all, if players knew exactly what they’d win and lose from a slot, there wouldn’t be much point in spinning the reels.

There are thousands of slots with RTP rates higher than 96%, so to find the very best payout slots, we whittle down the list according to criteria such as themes, bonus rounds, jackpot prizes, game developers, and minimum/maximum bets. What remains is a collection of the best paying slot games.

Top UK Casinos with Best Payout Slots in May 2024

Name Slot games Bonus Score Claim Bonus Review Terms and conditions Information
Slot games :
571
WELCOME OFFER

100% up to £50 + 50 Free Spins

Our Score
8.5/10
Reviewed by James Langley
  • Launched: 2019
  • Slots: 571
  • Progressive Jackpot Slots: 20
  • Payout: 96.5
  • Wagering: 30
  • Payout Speed: Instant - 5 days
  • Payment Methods: 10
The design of the VoodooDreams casino homepage makes seeing what’s available a hassle-free experience. I found the registration process simple, and I got my 100% up to £50 bonus and 50 free spins on Book of Dead as soon as I made my qualifying deposit. There are more than enough slots here to keep even diehard slots enthusiasts happy, and I feel that most will also find the site’s unique loyalty scheme loads of fun. The program is magical-themed and involves casting spells to collect free spins and cash rewards! Instant payouts to most banking options round off the perks at VoodooDreams, leaving the only concerns the wagering requirements attached to the sign-up offer and the absence of a mobile app.

From our list of the top ten high payout slot machines on this page, VoodooDreams boasts seven of them: Mega Joker, Rainbow Riches Reels of Gold, Steam Tower, Immortal Romance, Jackpot 6000, Blood Suckers and Jokerizer.
18+ new players only. Maximum £50 bonus. Minimum deposit: £20. Deposit Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match deposit bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money without wagering requirement. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Deposit Bonus expires after 30 days if wagering requirement has not been met. Free Spins expire after 3 days. One bonus allowed per person, address, device, IP. www.begambleaware.org For full bonus terms and conditions, please read below. Responsible Gaming 18+ Please Gamble Responsibly. Click 'Claim Bonus' to view the full terms and conditions.
Voodoo Dreams games library
Pros
  • Matched deposit and free spins for new players
  • Free spins winnings paid as cash
  • Impressive selection of best payout slots
  • Unique loyalty scheme
  • Instant payouts to all withdrawal methods bar debit cards
Cons
  • Huge wagering requirements of 60x deposit and bonus
  • No mobile app available
Slot games :
1600+
WELCOME OFFER

100% up to £100 + 10% Cashback

Our Score
9.5/10
Reviewed by James Langley
  • Launched: 2013
  • Slots: 1600
  • Progressive Jackpot Slots: 17
  • Payout: 97.5
  • Wagering: 35
  • Payout Speed: Instant - 5 days
  • Payment Methods: 8
Setting out to discover if All British Casino was a good pick for UK players, I was pretty impressed by what I found. Signing up was simple, and I was able to claim the 100% up to £100 matched deposit bonus and dive into the slots collection in just a few minutes. I was wowed by the range of software providers that contribute to the library. This included the likes of NetEnt, Thunderkick and Nolimit City, so I feel confident in thinking that most players will be as pleased as I was by the choice of games. The mobile app, tested on iOS, also hit the spot, offering a smooth playing experience and access to plenty of best payout slots.

All British Casino hosts half of the games in our list of the highest paying slots: Mega Joker, Steam Tower, Immortal Romance, Ooh Ahh Dracula and Jackpot 6000. The original Blood Suckers slot isn’t in the catalogue, but you can play Blood Suckers II (96.94% RTP) and Blood Suckers Megaways (97.66% RTP), which offers players increased payline routes to success.
#AD New customers only, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Click here for full T&Cs
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view the full terms and conditions.
All British Casino Landing page
Pros
  • 100% up to £100 welcome bonus with no winning cap
  • 10% cashback every week
  • Great selection of games
  • Mobile app available
  • Many payout requests processed same day
Cons
  • 35x wagering on bonus amount
  • Skrill and NETELLER excluded from bonus
Slot games :
700
WELCOME OFFER

100% up to £100 Bonus

Our Score
9.5/10
Reviewed by James Langley
  • Launched: 2019
  • Slots: 700
  • Progressive Jackpot Slots: 12
  • Payout: 96.5
  • Wagering: 45
  • Payout Speed: Instant - 5 days
  • Payment Methods: 11
Taking Hyper Casino for a spin proved an enjoyable experience. The sign-up process at this online casino was simple, and I was able to claim a 100% boost to my first deposit up to £100. The bonus cash on offer is a welcome treat, even though I’d prefer to see the above average 45x wagering requirement come down a bit. Despite the high playthrough demand, I had fun exploring the site, finding it well organised and nicely designed with fun space-themed graphics. The slots are sorted into different collections, making it easy to find the games you want, and I also appreciated being able to filter slots by different developers, such as Play’n GO and Elk Studios.

Among the best playing slot games in our top ten list at Hyper Casino are Mega Joker, Steam Tower, Immortal Romance and Jackpot 6000. Like All British Casino, the first Blood Suckers release isn’t available, but Blood Suckers II and Blood Suckers Megaways both make the cut.
New players only. Min deposit £10. Wagering 45x bonus., max bet £5 with bonus funds. Live casino play excluded with bonus. 100% up to £100 bonus on 1st deposit. Welcome bonus excluded for players depositing with skrill or neteller. No max cash out on deposit offers. Eligibility is restricted for suspected abuse. 18+ Please Gamble Responsibly. Click 'Claim Bonus' to view the full terms and conditions.
hyper casino website
Pros
  • Simple sign-up and matched deposit bonus
  • Lots of different games to choose from
  • Withdrawal requests processed quickly
  • ‘Hyper Fridays’ offer emailed every week
Cons
  • 45x wagering requirement on welcome bonus
  • No mobile app available
Slot games :
1002+
WELCOME OFFER

100% up to £100 + 100 Free Spins

Our Score
9.5/10
Reviewed by James Langley
  • Launched: 2018
  • Slots: 1002
  • Progressive Jackpot Slots: 42
  • Payout: 97
  • Wagering: 45
  • Payout Speed: Instant - 4 days
  • Payment Methods: 9
Duelz Casino made a good impression from the start. I found the design of the site appealing and quickly noticed several perks that would appeal to players. The welcome offer of a 100% up to £100 bonus and 100 free spins on Book of Dead is definitely one of the plus points, even if the T&Cs are a little strict. Exploring the site revealed a great variety of slots to choose from, including top titles like Gonzo’s Quest and Finn and the Swirly Spin. All the game tiles are transparent, which is something rarely seen and looks really good — in my opinion anyway! The promos also deserve a mention, with head-to-head tournaments with cash prizes starting every 15 minutes and 10% cashback every Friday.

Duelz hosts four games from our list of the best payout online slots: Mega Joker, Steam Tower, Immortal Romance and Blood Suckers. Blood Suckers Megaways is also available for more dynamic winning combinations.
New players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30x sum of deposit + bonus. Free Spins are given 20 per day on Book of Dead for 5 days in a row, log in is required. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45x. Some games may not be played with a bonus. Games may contribute differently when wagering a bonus. www.begambleaware.org. 18+ Please Gamble Responsibly. Click 'Claim Bonus' to view the full terms and conditions.
Duelz Casino homepage
Pros
  • Bonus cash and free spins for new players
  • Great variety of slots
  • Free slots tournaments start every 15 minutes
  • 10% weekly cashback
  • Instant payouts to all banking options bar debit cards
Cons
  • 30x wager deposit and bonus, plus £500 winnings cap
  • 45x wager free spins winnings, plus £100 win limit