Top 10 Highest RTP Slots for UK Players 2024

We have listed slot games guaranteed to give you a high payout rate and included a guide on how to play online slots and maximise RTP at regulated online casinos with a UKGC license. After comprehensive research and review, BestCasino experts found the best RTP online slots for British players.

This list is regularly updated to ensure that the games are only the highest paying in the industry.

Blood Suckers – NetEnt – 98%

Run away from vampires on the 5 reels of Blood Suckers slot and use the 25 pay lines to win up to 1, 014x your stake on each spin! You can wager £0.25 to £50 per spin, meaning the slot’s max prize is about £50,700! Bonus features in this online slot game include a vampire-slaying feature, coffin-free spins and multipliers.

Jokerizer – Yggdrasil – 98%

Play with the jester on Jokerizer, one of the most popular high RTP slots with a classic theme. There are 5 reels to spin and 10 pay lines to form wins with, but the most remarkable feature is the Mystery Win, which rewards up to 6000 coins when 3 or more jester symbols land simultaneously. You can play this game for £1 to £20 per spin.

Madame Mystique Megaways – Pragmatic Play – 98.03%

Enter the fantastical world of Madame Mystique Megaways to win up to 5,000x your stake in a round. Not only is this game amongst the most players high RTP slot machines by Pragmatic Play, but it also offers 200 704 ways to win. This 6×8 grid also comes with free spins, high volatility, cascading reels and a bonus buy.

Zeus Lightning: Power Reels – Red Tiger – 97.73%

The ancient Greek god is unleashing wilds, expanding flashes of lightning and free spins on Zeus Lightning: Power Reels. There are many reasons why this game is enlisted as one of the best rtp slots in UK casinos. From the appealing visuals to its grand prize of 5, 037x your stake per spin! What’s better, you can play for £0.10 to £20 per spin. 

Jackpot 6000 – NetEnt – 98.9%

If you are looking for more high rtp slots with a classic theme, check out Jackpot 6000 slot machine by NetEnt. While the slot has 3 reels and 5 pay lines, each spin goes for £0.10 to £10. The maximum win is 6000x your stake.

Blood Suckers Megaways – Red Tiger Gaming – 97.66%

You get another chance of playing with the vampires, with up to 117, 649 Ways to win, on Blood Suckers Megaways. Played for £0.10 to £4, this high RTP slot machine allows players to form wins with random wilds, multipliers, extra scatters, free spins and cascading reels. You could win the grand prize of 20, 521.9x your stake!

Kings of Chicago – NetEnt – 97.8%

Sleazy gangsters from the 1930s are the main characters of the Kings of Chicago slot by NetEnt. This slot’s rtp is significantly high and the bonus features are attractive as well. At £0.05 to £50 per spin, you can play with the free spins, multiplier boost and joker symbols that double your win. Above all, the max win is 10,000x your bet!

Golden Tour – Playtech – 97.71%

Take a virtual trip to a lush golf course and take advantage of the high RTP on the Golden Tour slot game. For £0.01 to £5 per spin, you get to play with golf ball wilds, the marmot, duck or catfish bonus features. Landing double golf balls on the good rewards 2000 coins, while 5 white balls on the grid give 1000 coins. What’s more, the base game rewards 2000x your stake!

The Catfather – Pragmatic Play – 98.1%

This is a hilarious slot machine about a mobster cat. You only need £0.09 to £45 to play the 5 reels, 3 rows and 9 paylines. If you are a pet lover, the different felines will have you smiling with each spin, especially if you trigger wild reels, free spins or multipliers. Most importantly, the slot awards the grand prize of 2,251x your stake.

Drive Multiplier Mayhem – NetEnt – 98%

Hold on to your seat, as this futuristic car-themed slot machine takes you on a wild ride on its 5 reels and 15 pay lines. This game is a brilliant choice for when you are in the mood to play high RTP slots with high volatility. Additionally, you get to play with multipliers, free spins, wilds and the big prize of 5,100x your stake on each spin. 

Slot GameRTPMin. BetMax. Bet
Blood Suckers98%£0.25 £50 
Jokerizer98%£1 £20 
Madame Mystique Megaways98.03%£0.20 £125 
Jackpot 600098.9%£0.10£10
The Catfather98.1%£0.09£45
Drive Multiplier Mayhem98%£0.15£75
Zeus Lightning Reels97.73%£0.10£20
Blood Suckers Megaways97.66%£0.10 £4
Kings of Chicago97.8%£0.05£50
Golden Tour97.71% £0.01 £5

99% RTP Slots (All Game Providers)

If you are looking for ways and strategies of winning more on top RTP slots, consider playing high RTP slots with a payout rate of 99%. This guarantees you a lucrative win in the base game, especially if you are playing with the max stake. 

The list below includes the best RTP slot machines at UK online casinos. Try out the games and enjoy massive payouts from your gaming sessions!

Slot GameRTPMin. BetMax. Bet
Book of 9999%£0.10£100
Mega Joker99%£1£10
Ugga Bugga99.07%£0.10£50
Ocean Princess99%£0.10 £25
Nemo Voyage99%£0.40 £200
Fruit Beats Xtreme99.08%£0.25£100
Bruce Lee; Fire of the Dragon99%  
Ooh Aah Dracula99%£0.10£500
Goblin’s Cave99.32%£0.01£2

Book of 99 – Relax Gaming – 99%

A successful fight with the Cyclops on the Book of 99 high RTP slot might see you walking away with a cash prize worth 5000x your stake. This popular online slot is playable for £0.10 to £100 per spin. In addition to the gameplay, it has some of the best RTP slot features, including free spins, expanding symbols and a cash collection bonus.

Mega Joker – NetEnt – 99%

Looking for high RTP online slots with a jester theme? Play Mega Joker and get to the Supermeter mode, where you can trigger up to 2000x your stake wins. The slot has 3 reels and 5 active paylines and is playable for £1 to £10 per spin.

Ugga Bugga – Playtech – 99%

Many high RTP slot games have an adventure theme, but Ugga Bugga pays out the most. While the game has 10 pay lines, players can choose their preferred lucky symbols and find wilds across the 6 reels. The max win is 1000x your stake.

Ocean Princess – Playtech – 99%

The minimum bet on Ocean Princess is £0.10 to £25 per spin. Still, this high RTP slot game allows players to choose symbols and hold them in specific positions on the grid to boost their payout. Above all, you can win up to 1000x your bet in a spin.

Nemo Voyage – WMS Gaming – 99%

With just £0.40 to £200 per spin, you could play Nemo Voyage and get a first-hand experience of ocean-themed high RTP slots online. There are multipliers and stacked wilds to help you fill the depth meter. Finally, players can win up to 1500x their stake on a single spin of Nemo Voyage.

Fruit Beats Xtreme – Spinmatic – 99.08%

Combine some retro tunes and high RTP slot gameplay on Fruit Beats Xtreme for an opportunity to win 500x your bet in a round. It doesn’t have many unique features, but there are multipliers and wild symbols to boost your payout.

Bruce Lee; Fire of the Dragon – WMS Gaming – 99%

Bruce Lee: Fire of the Dragon is a 60-pay line game themed after the great martial arts master and actor. It has 80 pay lines, 5 action-packed reels and up to  £200,000 in max wins per spin.

Ooh Aah Dracula – Barcrest – 99%

The famous vampire reigns on Ooh Aah Dracula, one of the highest RTP slots by Barcrest. It has innovative gameplay, free spins and a wild symbol that boosts its high RTP. Try your luck and play the slot game for £0.10 to £500 per spin, to possibly win 5000x grand award.

Goblin’s Cave – Playtech- 99.32%

Turn on your lantern and adventure to the Goblin’s Cave. If you are searching for fantastical-themed highest RTP slots online, play this 3 reel slot and its 3 pay lines. It has bet limits of £0.01 to £2 and 4 jackpots.

What Factors Influence Slot RTP

One might wonder, what is the difference between the highest RTP slot games and low RTP slots? As a seasoned player, you might have noticed that the return-to-player rate differs for all casino games. A slot machine might have basic graphics, but the RTP is high, and vice versa.

Here are some things that determine the average RTP of online slots.

The casino you choose to play

Recently, we have seen more slot providers give UK casinos the freedom to adjust the average RTP of a slot machine to a certain level. Therefore, a slot with 98.55% RTP can have 98.30% RTP in one casino and 97.99% in another gambling site. That is why BestCasino experts insist that slot enthusiasts only play at trusted UK online casino apps or sites.

If you are looking for the best online casinos to play top paying slots, check out the top slot sites featured on In addition to offering the best RTP slots, these casinos accept and process speedy payouts via a wide range of payment methods.

Slot providers

Slot game providers might even have games with similar themes but different RTP. These companies specialize in creating exciting slot games, and as expected, each site will have its unique features and payout mechanism, including the RTP. 

For instance, all the slot games in the Big Bass series by Pragmatic Play have an average rate of 96.71%. Consequently, all the Money Train slots by Relax Gaming offer a 96.2% RTP. 


Volatility refers to how regularly a slot machine paysout. High volatility slots have more spaced-out wins, but the wins are significantly huge. Most progressive jackpot slots are highly volatile. Nevertheless, low volatility slots have more frequent but smaller wins. Game developers create a balance in slot games by combining low volatility with high RTP. On the flip side, high volatility slots have a medium average RTP.

In-game bonus features

In-game bonus features are built-in slot games that give players more ways to create winning combinations. Standard features include special symbols, expanding reels, transforming scatters, free spins, respins, multipliers and cascading reels, just to name a few. 

Again, for a balanced gaming experience, developers give high rtp slots fewer special features, while lower volatile slots are packed with bonuses. 

For example, the Jokerizer has a 98% RTP and one Mystery win bonus. However, the Mental slot by Nolimit City comes with 96.08% RTP and 8 bonuses!

How is RTP Calculated?

If you are playing a slot casino game and want to know how much RTP you will get. Players can divide the general amount won from the game by the number of bets they have placed to find out the RTP of online casino slots. 

In a mathematical equation:

Return To Player = (sum of wins/sum of bets) x 100%

RTP vs House Edge

RTP is what the player wins from each bet. House edge is the amount the online casinos get to keep from the player’s wager. House edge is also called house advantage because the online casino still makes a profit even in a winning spin. If the house edge of an online slot is 5%, it means the RTP is 95%. 

RTP vs Payout Rate

RTP is the return to player percentage of one particular game. However, the payout rate refers to the average amount the casino pays its players for playing games in that particular category. For instance, Mr Green’s online slots have a payout rate of 96%, which means most slots have an average rate of 95.5% to 97%.

What is RTP Manipulation?

As you will see in other online slot guides at BestCasino, online casino sites can change the RTP slightly. Unfortunately, with thousands of online casinos in the UK, it is no surprise that some will try to manipulate Return To Player rates in games to increase profits.

RTP is a vital parameter for players when choosing new high RTP slots to play online. After all, it indicates what players can expect to receive on each win. For example, Money Train 4 has an average RTP of 96.10%. Therefore, a £10 bet should reward the player £96.10, while the casino takes £3.90.

Bad casino operators always try to lower the RTP of their online slot games to increase their profits. By reducing the RTP, they make huge profits at the player’s expense in a shorter period.

If you want to enjoy the best RTP slots, join and play at any of the top UK casino sites ranked by experts at BestCasino. The best online casinos are transparent about the RTP and will communicate if there are any changes to the payout rate. Most importantly, you will be able to see the actual RTP of the online slot near its paytable. 

If an online casino hides its online slots RTP, don’t be too quick to play there.

Keep in Mind Variance and Volatility

Volatility and slot variety are essential parts of all online slots. When combined with the RTP element, we get the basis of payouts in that particular game and the size of wins that players should expect.

While luck largely determines whether you win in a slot game, the variance indicates the deviation of payouts, while the volatility refers to how often a player will win. 

Note that despite these two concepts affecting payouts, there is no rule capping the volatility ratio to RTP in slot games. 

For example, a slot with a 90% RTP and a 97% RTP. If both slots had a low volatility, they would pay out more often. However, the gambler playing the slot with a 97% RTP will win more real money than the other.


What is RTP?

RTP is an abbreviation for Return To Player, and it refers to the theoretical percentage of how much online slots will pay back to players after a successful spin.

What is considered a high RTP percentage?

High RTP percentage can range between 96% and 99%. However, the highest RTP slot machines have 98% – 99% RTP.

Can RTP change over time?

Yes. Online casinos can change their RTP over time. However, gambling operators are required by the UKGC to inform players of such changes and indicate a slot’s RTP for players to see.

Are RTP percentages different for online and land-based slots?

Yes. Online slots are considered to have high RTP, as compared to land-based casino games. The highest RTP slot machines in brick-and-mortar casinos offer an average of 90% to 94%.

How is variance connected to RTP?

Your overall win from a slot after several rounds is affected by both variance and RTP.

Is RTP important for slots?

Yes. Online slots players consider RTP to be one of the most important factors affecting gameplay and real money wins of a game.

Do high RTP slots guarantee more frequent wins?

No. Low volatility guarantees frequent wins in slot machines. High RTP slots guarantee a huge payout after a winning spin in a slot.
Playing low volatility, high rtp slot games assures is one way of winning massive prizes after several rounds in the game.

The UKGC doesn’t have a minimum RTP requirement. Online casinos and slot developers have been free to implement the RTP they see fit. However, the Return to Player percentage must be displayed to the players.

How does volatility affect gameplay in relation to RTP?

High volatility means less frequent wins, but you are guaranteed to make wins more often in low-volatility games. The RTP is not affected by the volatility of a game.
Players should find high RTP slots with low volatility to enjoy the best gameplay and win more often. If you want to make bigger wins, go for a high volatility slot with a high RTP to match or play a progressive jackpot slot!

Are progressive jackpot slots considered high RTP slots?

The RTP on jackpot slots varies and is unrelated to the size of the progressive jackpots. Furthermore, the jackpots are triggered at random spins due to slot games’ random number generator mechanism.

Responsible Gambling

Playing high RTP slots is entertaining, and the winning potential is huge. Still, players should always gamble responsibly, even on the best paying slot games. The UKGC obligates all online casino apps and sites in the United Kingdom to offer players responsible gambling tools and support. 

Additionally, players are supposed to be responsible for their gambling habits across all types of games, including the best RTP slots. Here are ways players can practice responsible gambling on high rtp slot games.

  • Never wager what you cannot afford to lose, and don’t use debt money to gamble.
  • Be cautious about playing slots, even if it is the best RTP slots, when under the influence of alcohol.
  • If it is your first time, play high RTP slots in demo mode before making real money bets.
  • Choose the best RTP slots and check whether the games have enough bonuses. 
  • When you form a win on the highest RTP slot games, withdraw the wins immediately. (Check the online casino to learn the minimum withdrawal limit.)
  • Use the Stop Loss settings when playing with an active Autoplay feature in regular games and in the best RTP slots.
  • Contact support at the respective online casinos if you suspect that you have a problem with gambling.