Best Slot Sites in the UK in November 2023

Last modified: 24 November, 2023, 3:15 pm

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Play the best online slots in the UK. With tens of thousands of slot games available, it's important to only choose from the very best as laid out on this page by the Scotsman's expert casino team.
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How We Rank the Best Slot Casinos

Because practically every single online casino in the UK has some form of slots available for players to use, it can be a challenge to find the best platforms for slot games. Here’s 6 key factors we look at when it comes to ranking them.
Casino bonus

Game Providers

Whilst there are thousands of slots, there are only a handful of top tier game providers that create the best slots. If a casino uses game providers such as NetEnt, Play’nGO, Pragmatic Play and Microgaming then you’re off to a winning start as they are considered to be the elite in the industry.
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This stands for “return to player” and it refers to the average amount that a player is likely to win back over the long-term. It’s an important number to know though and will either help or hinder your chances on a slot machine. A slot that has an RTP of 96% will give you back £96 for every £100 wagered over time. The higher the RTP of a slot game the better. Therefore, playing at online casinos that have slots with high RTP’s is a good slot strategy to have.
Live casino

Variety of Games

The amount of slot games an online casino provides greatly impacts their ranking on our list. The more the merrier in this regard as it gives players a better chance to find slot games that they love. The best online casinos have thousands of slot games spanning a range of different themes and storylines.
Live casino


Many slot games have jackpots that can be won by players. The size of most of these jackpots are life changing amounts of money and they are very enticing for casino players. Therefore, online casinos that have a good amount of jackpot slots are much better to use as you’ll have the chance to win enormous prizes.
Live casino


These are the amount of columns that contain symbols on a slot machine. Most slots have between three and eight reels, with the most common amount being five. Online casinos that have slots that have a range of reels are typically better to use as you will have more options if you prefer smaller reel or large reel games.
Live casino


This is the number of patterns on reels that payout. The more paylines a slot game has, the better your chances of winning when you spin as there are more possibilities to get some sort of reward. Some casinos only have games with smaller paylines, whilst others have games that have a huge amount of them.

Best Online Slot Games in the UK

You’ve now seen the best casinos for slots, but what are the best slot games? We’ve researched the most played and sought after slots in the UK and have expanded on what makes them so special.

Starburst - This is one of the most popular slot games of all time. Starburst is at the front of every online casino's slots page and has cemented itself as an absolute classic. This 5-reel slot machine has low volatility, allowing players to rack up more consistent wins. Starburst also has a win both way feature on 10 paylines. Add to this, its unique theme, colourful gems and easy to understand rules and we can see why this slot is one of the most used in the UK.

Book of Dead - Travel to Ancient Egypt as you hunt for treasure. This is another 5-reel classic that has captured the hearts of casino players across the UK. With a high RTP of 96.21%, you can win up to 5000x of your wager. The immersive pyramid theme and fun bonuses make it one of the best online slot games to ever exist.

The Wolf’s Bane - This slot machine is set in a mythical land where werewolves exist. This spooky slot game is great fun for those that prefer a more adult themed game than the likes of fruit and sweets. When multiple bonus squares pop up on a spin, players are able to choose which one they want to reveal. This is an exciting way of receiving a bonus as it’s down to the player to decide. 

Gonzo’s Quest - Join Gonzo as he looks to find Eldorado. This superb slot machine has 5-reels and an incredible jungle themed layout. There are many graphics that appear throughout the duration of the game and with a solid RTP of around 96% it’s a favorite for slot players. 

Sweet Bonanza - This candy land adventure allows players to win over 21,000x of their bet as they spin this 6-reel slot machine. There is a buy feature where users can purchase 10 free spins that allow them to get tumble wins that can provide them with incredible rewards. It’s understandable why this game is so popular as it’s incredibly quick-paced and fun to play.

Rainbow Riches - This colourful leprechaun themed slot has stood the test of time. Despite being over a decade old, Rainbow Riches has always managed to be one of the most popular slot games in the UK. Players can move along the road and can win up to 500x if three wishing wells appear. There are also other games that can be played within this slot if the right symbols appear. Overall this is one of the best slot games around and it’s a very fun experience.

Try Free Online Slots

You can try all of the slots mentioned above as well as many other slot games for free. This is because the game providers that create these slots allow everyone to use a demo version of the game. This is a great feature to have as it allows you to see, understand and get familiar with the slot machine. It’s a great way to find the perfect slot game for you.
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Book of dead spilleautomat

Book of Dead

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The wolf's bane spilleautomat

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Gonzo's Quest spilleautomat

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Types of Online Slot Games

There are several types of slots available at online casinos in the UK. We’ve expanded on what exactly these slots are and how they differ from one another. Your level of casino experience and strategy will determine which of these slots you will want to use.

Video Slots

These are also classed as “regular slots” and are the most commonly found type of slot at casinos. They are themed and have video graphics both behind and infront of the reel when a win is paid out, a bonus is it or a new game is triggered within the slot. They also emit sound. The surrounding options on the screen allows players to determine their stake, how many paylines they want to include and whether they want to use the autospin option. Most slots you come across will be video slots like this.

Free Slots

These are the demo versions of video slots. They are unique as they can be played for free and also without needing to sign up to a casino. This means you don’t need to give any information over and you’ll still be able to play free slots. You won’t be able to win any money from these slots, but it is a great way to try them out and get a better understanding of how different slots work.

Jackpot Slots

A percentage of every wager is added to a jackpot on this type of slot. This means that the ultimate reward gets bigger and bigger over time until a lucky player wins it all. While the chances of winning are very small, these slots are very popular with online casino players.

Mobile Slots

These are very similar to video slots, with the added feature that they can be played on mobile phones via casino apps. Most slots nowadays are mobile compatible due to software providers factoring in mobile usability when they create new slot games.

How Do Online Slots Work?

The logistics of how slots work are slightly more complicated than other casino games such as blackjack and roulette. This is because there are more moving parts than a ball spinning around a wheel or a dealer putting some cards on a table. In order to get a better understanding of online slots, we have to look at the different aspects that make up a game and find out how they individually work. 

Reels - The columns that you see on a slot game are called reels. On average there are 5 reels. Each reel has several symbols in a row that spin around the slot machine when you press the spin button. 

Paylines - The paylines on a slot machine accounts for how many different ways a player can win when they spin. Before you go to spin, you will be able to choose how many paylines you want to be eligible for. The higher the amount of paylines, the more the wager will cost. 

Symbols - These are the items that appear on reels. They look different depending on the theme of the game, but in the case of Starburst it’s a mixture of gems, the number 7 or the word bar. Each symbol has a certain value attached to it and if it’s paired with other symbols on the payline, they can reward players with various prizes.

Volatility - This reflects how much and often a slot pays out. Slots with a high volatility pay out big wins but are more rare. Slots with a low volatility pay out smaller wins but are more common.

RNG - Random number generators allow slot games to be fair. They work by ensuring that each spin is uncompromised and true to the statistics that are laid out. RNG’s are responsible for the outcome of a spin and they determine what symbols land on each reel. Random number generators must be used at licensed online casinos in the UK and the gambling commission tests them regularly to ensure that no slots are illegal.

RTP - The return to player metric is a key factor of how online slots work. The RTP  is classed as a percentage and is chosen by the game developers. Most slots range between 94%-97%. This means that for every £100 that is wagered, how much will the average player get back. Of course, to stay profitable but also to be engaging, slots have found that the £94 to £97 return rate is optimal. The higher this number, the better chances you have of winning.

Limits - This refers to the limits on wagers, paylines, spins and winnings. Each slot will be different in this regard and some of these factors can be altered by the player before commencing while some can’t.

Bonus Features - Lots of slots nowadays have several bonus features within their game that allows players to take part in decision based mini-games. For example, if multiple bonus symbols appeared during a game of The Wolf’s Bane, you would be able to choose which one you wanted to reveal and subsequently see what prize you won and what ones you missed out on. This type of feature is very common as it makes the experience more fun and enticing.

Slot Games on Mobile Casinos

One of the best parts about these slots sites is that you can access them from your mobile or tablet device. This means that if you have an iPhone, iPad or an Android phone or tablet then you will be able to access the same great slot games that you could on a laptop or PC. 

In fact many of the best online casinos in the UK adopt a mobile-first approach when they launch new games on their platform. This is because in 2023, the vast majority of casino sessions in the country are through smartphones

They give players the ability to play while they’re on the go and it’s also much easier to tap a few buttons on a phone than it is to set up your laptop somewhere. Get started today with the best UK mobile slot sites and download them now on either Apple’s app store or Google’s play store.

    Real Money Slots vs Free Slots

    When you play slot games, you can either do so for real money in which you will need to place a wager first (unless you’re playing via a no deposit free spin bonus) or you’ll be playing for free through a demo of a slot game. Here’s more information about these types of slot games.

    Real Money Slots - These can be either video slots, jackpot slots or mobile slots. However, they all have one thing in common. Players can win real money when they wager. In order to play real money slots you will need to sign up to an online casino in order to register an account and then deposit money.

    Free Slots - These are demo versions of a slot game. These can be played without any requirement to sign up to a casino or even to deposit any money. It’s a great way of testing out potential real money slots without having to risk anything. The only downside is, you will get no rewards for using free slots, apart from the experience that you gain from learning about them.

    Software on Slot Sites

    You’ll find that most of the online casinos in the UK have a similar range of slot games. This is because these slot games aren’t individually created by each casino, but instead are made by casino game development companies. Here are the best and most popular slot game providers in the UK 

    NetEnt - Some of the best slot games in the world have been designed and created by this Swedish development company. The likes of Starburst and Gonzo’s Quest are just a few of the top slots from their large portfolio. 

    Play’nGO - This is the development company that created the legendary Book of Dead slot game. Their slots are among the most played in the UK and after being founded in Sweden in 2005, they quickly rose the ranks to become a premier casino software provider.

    Microgaming - After providing their first casino software almost 30 years ago, this Isle of Man company is behind the incredibly popular Mega Moolah. This slot game holds the record for the largest online casino payout to date with a whopping £5,000,000 in 2009.

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