The online slots sector has witnessed substantial growth in recent years as players in the UK increasingly indulge in playing casino games from the comfort of their own homes.

For seasoned players and newcomers alike, key considerations for an online slot site typically include security and an extensive selection of high-quality and engaging games. Using methodological analysis, BestCasinoSites.net has reviewed 10 online casinos available in the UK that offer a great, all-round slots experience.

Gambling involves risk and you must not gamble with funds you can’t afford to lose. It should not be undertaken as a solution to any financial difficulty. It is worth remembering the phrase: the house always wins. All gambling sites and guides are 18+ only. Please gamble responsibly.

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If you suffer from a gambling problem or suspect somebody you know does, then call the National Gambling Helpline at 0808-8020-133 to talk with an advisor for help and to make gambling safer for you or your loved ones, or visit the following free gambling addiction resources: www.gamstop.co.uk, www.begambleaware.org and www.gamcare.org.uk

10 online slot sites available in the UK

  • Duelz – A great choice for an overall slots experience
  • Ladbrokes – Offers an extensive slots games catalogue from popular software providers
  • Mr Mega – Known for providing a great experience all round for mobile slots players
  • Coral – Offers a great selection of promotions and offers
  • William Hill – A polished gaming experience from an established giant in the industry
  • Casumo – Exceptional customer support with rapid responses to customer queries
  • Betiton – Wide selections of deposit options available
  • Monopoly Casino – Offers an exclusive selection of slots games including many Monopoly-themed slots
  • Rainbow Riches Casino – Ideal for new players looking for low wagering requirements
  • Grand Ivy Casino – Provides a range of exclusive offers and promotions through their VIP programme

Online slots tried and tested

All gambling sites and guides are 18+ only

BestCasinoSites.net has worked hard to bring you helpful information about these popular slot sites. The casino review team at BestCasinoSites.net has reviewed every important factor, from the welcome bonuses, game variety, choice of payment options, and licensing and security. Here are the findings from their testing of each slot site listed above:

Duelz

Duelz excels across the board when it comes to online slots. The site is dually licensed by the Gambling Commission of Great Britain (GC) and the Malta Gaming Authority (MGA). This casino offers over 1,000 slot titles to play on both desktop and mobile! Plus, over 100 jackpot slots. What we really like about Duelz is its singular focus on the online slots experience, with rapid loading times and a flawless user interface that makes trying out new games a breeze.

Ladbrokes

Ladbrokes is a name that many people will recognise from the high street, and their online casino doesn't disappoint. The high-quality platform comes with games and thousands of slots, including some of the popular progressive slot titles. One of the biggest plus points of Ladbrokes is the sheer number of online slots games available to play. With over 1,850 slots available to UK players from the likes of NetEnt, Playtech, Evolution, IGT, Microgaming and many more, Ladbrokes offers a very broad and exciting choice of games for slots players.

Mr Mega

This casino is relatively new and offers hundreds of slots on both desktop and mobile. At Mr Mega you will find big name slots like Starburst and Immortal Romance. Plus, this is a great venue for high rollers looking for progressive slots, such as Beast of Wealth from Play'n GO. The site also offers a highly intuitive mobile casino app, which makes playing slots on your Apple or Android device a breeze.

Coral

Coral is another big name in the gambling industry, and they focus more on quality rather than quantity when it comes to slots. They currently have over 450 slots including big names such as Gonzo's Quest, Mega Joker and Age of the Gods. The minimum deposit for many payment methods is £5, making Coral a good destination for those with smaller budgets. Complimenting the range of low deposit options is a huge selection of online bonuses making Coral a fantastic choice for new players trying their first online slots experience.

William Hill

William Hill is one of the most recognisable names in the gambling business. With the company's long-standing reputation and extensive experience in the gambling industry, it's no surprise that they offer a great slots site too, which has licenses from both the GC and MGA.

For players who have regularly experienced slow loading times, laggy and slow game play, and games producing errors at just the wrong moment, William Hill makes a refreshing change. With a propriety slots loading system, the site manages to provide a very polished slots game experience.

Casumo

Casumo is a bright and colourful online slot site that promises fun the moment you enter the homepage. This online casino offers a very user-friendly experience, and it's easy to see that the company keeps things fresh by regularly offering new bonuses, promotions, and games. Although a relatively new player in the online slots space, Casumo offers excellent customer service with fast responses to player enquiries.

Betiton

Next on the list is Betiton, and this is a casino that understands the importance of offering a variety of convenient payment options to players. The slot collection is also epic, with many classic fruit slots sitting alongside some of the latest modern titles. There's sure to be something to suit most players' tastes. The site also has a range of deposit options available. Betiton accepts PayPal, Trustly, debit cards, Paysafecard and several other popular deposit methods.

Monopoly Casino

Fans of the classic and sometimes ruthless board game are sure to be intrigued by Monopoly Casino. It has hundreds of slots in its library and even some exclusive games too. Monopoly slots games have been popular with UK casino players since first launching way back in the 90s!

Rainbow Riches

This is a fun casino that truly lives up to its name. Within its walls, you will not only encounter many of the renowned Rainbow Riches slots (the full collection of 20), but also an array of other slots. Prepare to be enthralled by a combination of timeless classics and modern creations crafted by excellent developers. A main feature of Rainbow Riches casino is the ability for players to access a number of free daily games. These free games are available to new players only, once they deposit and wager £10. Full terms here.

Grand Ivy

Last on the list from BestCasinoSites.net is Grand Ivy, which is a great choice for those seeking a varied assortment of slots. You'll find a selection of games from a range of esteemed software providers. There are for example a number of slots showcasing the brilliance of Microgaming and NetEnt. Prepare to be captivated by beloved titles like Immortal Romance, Twin Spin, Starburst, and the adventurous Gonzo's Quest. Grand Ivy also provides an excellent VIP programme, offering a range of exclusive offers and promotions to eligible customers.

Popular online slots bonuses for players in the UK

All gambling sites and guides are 18+ only

Welcome bonuses can play a large part in enhancing your online casino journey, and for some they are a crucial factor in deciding which site to sign up with. As some popular slot sites vie for supremacy, they know attractive bonuses are important. These offers typically take the form of deposit match bonuses, granting you for example a generous 100% match up to £100. Some also offer bonus spins to use on handpicked slot titles. This provides an excellent opportunity to explore new games without tapping too much into your own initial funds.

However, caution is key when engaging with any bonus or offer. Prior to diving in, take a look at the attached terms and conditions to avoid any unwelcome surprises. Here are some important things to keep an eye out for when looking for exciting online slots bonuses.

Eligibility – Are you eligible for the bonus? Welcome offers are only for players registering at the casino for the first time. Some sites may also require you to enter a bonus code to claim the offer and/or they may require you to 'opt-in' to the offer when creating your account.

Game restrictions – Which games can you use the offer on? Look out for this particularly when it comes to bonus spin offers, as these are often tied to a specific slot title and cannot be redeemed on others.

Wagering requirements – How many times do you need to wager the bonus amount or the bonus plus deposit amount before you can withdraw any winnings? For example, if the bonus has a 30x wagering requirement and you receive a £100 bonus, you'll need to wager £3,000 (30 times £100) before you can cash out your winnings.

Game contribution – How much do different games contribute towards fulfilling the wagering requirements? For instance, slots typically contribute 100% but table games can contribute less.

Time limit – When do you need to use the bonus funds or spins by? Most welcome bonuses have a strict validity period in which the bonus must be used, if not it expires.

Deposit requirements - How much do you need to deposit before you can claim the bonus? Unless it is a no-deposit bonus (which is becoming increasingly rare), most offers will require you to deposit a minimum amount, typically between £10-£20.

Remember to gamble safely - Approaching bonuses carefully, tracking all deposited funds and time spent gaming, setting strict limits, and avoiding "reload" bonuses, can promote safer habits. Utilising available site tools to monitor your gameplay and opting into cooling off periods when needed can also be proactive steps to gamble in a controlled, responsible manner - which should remain the priority when engaging in any gaming activity.

Payment methods at the online slot sites

All gambling sites and guides are 18+ only

When it comes to online slots payouts and funding your account, having reliable and convenient payment methods should be non-negotiable. Fortunately, the slot sites we highlighted earlier offer a range of popular payment methods, whether you prefer the familiarity of card payments, the convenience of eWallets or the flexibility of mobile payment options.

Here are some of the most used payment methods for UK slots players:

Debit Cards

It's important to note that from 2021 UK players can no longer use credit cards for online gambling. However, debit cards like Mastercard or Visa are still allowed and are a simple and secure way to make a deposit to your slots account. For many online casinos the minimum deposit by debit card is £5.

eWallets

These are an increasingly popular payment method for online gambling and are essentially digital wallets that allow users to store, manage, and transfer funds electronically. Some advantages include the convenience and enhanced security they offer compared to some other payment methods. Popular eWallets used by UK players include PayPal, Skrill and Neteller.

Prepaid cards

Another great option offered by many of the popular slots sites are prepaid cards such as Paysafecard. One of the main advantages of prepaid cards is that they offer an extra layer of security and privacy since they are not directly linked to a bank account .

Mobile payments

Mobile payments typically offer convenience and seamless transactions, making them popular for users at online slot sites. Some examples include Boku and Apple Pay. Some advantages of using these methods include speed and ease of use, as there's no need to enter card details or personal information for each transaction.

Crypto

You may be hard pushed to find this method at many online slot sites, but some out there do offer it. One of the most well-known types of cryptocurrency is Bitcoin and an advantage of this is that it allows for swift transactions.

Bank transfer

Lastly, there's always online banking. One of the main benefits is that it's widely accepted and supported by most slot sites, making it reliable and accessible. Just be aware that this method may take longer than paying via an eWallet for example.

Recommended online slots games – high payouts

When looking for exciting slot games, an important thing to keep in mind is the RTP or Return to Player rate. An online casino will have an overall RTP, but individual games will also have one, so make sure you're aware of it.

RTP essentially refers to how much of the total bets paid into the slot, on average, will be returned in the form of winnings over time. Keep in mind that RTP is an average, so if the RTP is 95% it doesn't mean that you're guaranteed to get exactly 95% of your money back on every single gaming session.

Choosing a game with a higher RTP is often a good idea (the closer to 100% the better), because these games payout a larger proportion of the money staked on them when averaged out over time versus games with a lower RTP. Some payout online slots will have an RTP of higher than 96%.

Games are also audited by independent agencies such as eCOGRA to check that the RTP is accurate.

Here are 10 online casino slots with high RTPs:

  • Goblin's Cave - 99.32% RTP - This treasure-themed slot from Playtech has one of the highest RTPs and is offered by many slot sites. It's a three-reel slot with three paylines.
  • Ugga Bugga - 99.07% RTP - This is another three-reel slot from Playtech, but with a twist. Set in the jungle, it has 10 paylines and 23 possible winning combinations.
  • Mega Joker - 99.00% RTP - A classic from NetEnt, with retro fruit machine symbols and a supermeter mode, which when activated offers higher stakes and a potentially bigger payout.
  • Jackpot 6000 - 98.90% RTP - A real retro slot from NetEnt with three reels. It will likely appeal to people who want the nostalgia of a real pub fruit machine, but online.
  • Blood Suckers - 98.00% RTP - A vampire-themed game from NetEnt with five reels and 25 paylines. The game also has some fun bonus features to look out for like the vampire-slaying bonus.
  • Starmania - 97.87% RTP - This NextGen video slot has high-quality graphics and a bright theme. The five-reels, 10 paylines and special features make this an engaging game.
  • Kings of Chicago - 97.80% RTP - Another from NetEnt and a video slot with an existing twist. It combines classic slots with a poker game.
  • Devil's Delight - 97.60% RTP - This wickedly fun video slot from NetEnt is set in the fiery pits of hell. There are some great extra features such as wild symbols, free spins and the sin spins feature.
  • Couch Potato - 97.43% RTP - This game comes from Microgaming and takes things back to basics with a simple three-reel, single-payline design with a traditional fruit machine theme.
  • Alchemist's Lab - 97.32% RTP - Alchemist's Lab is a slot game developed by Playtech. It features a unique 3-reel, one-payline structure, and gives players the chance to enter the alluring world of alchemy.

High vs low volatility slots

The volatility of a slot is something important to keep in mind when deciding which game to play. It essentially refers to the degree of fluctuation in a slot game's winnings over time and the distribution of potential payouts associated with a specific game.

There are low, medium and high volatility slots.

In low volatility slots, players can expect to receive more frequent, albeit smaller, wins. These games typically have a higher hit frequency, meaning winning combinations appear more often. While the payouts may not be as substantial, low variance slots offer a relatively steady and consistent experience.

Medium variance slots strike a balance between low and high-variance games. Players can typically anticipate a mix of moderate and smaller wins, with occasional larger payouts. These slots aim to provide a balanced gaming experience, appealing to players who seek a combination of regular wins and the excitement of bigger rewards.

High variance slots are known for their infrequent but more significant payouts. Players might experience longer periods of play without winning, but when a winning combination occurs, it can lead to substantial rewards. High-variance slots are preferred by players who enjoy chasing the highest jackpot at online slots and can withstand the higher risk involved. As a general rule, slots with a higher progressive jackpot tend to have a higher level of variance.

How to play online slots

Getting started playing online slots is easy. Firstly, you need to ensure you pick a reputable and licensed operator. For players in Great Britain, the licence from the GC is the one to look out for. Online casinos need this licence to legitimately offer their services to players in Great Britain and all casinos mentioned in this article are GC licensed.

Once you've chosen a licensed casino, sign up by providing the required information. You'll likely need to provide your name, email address, and create a password. At some point, all casinos will require you to provide photo ID and/or proof of address, and if you wish to deposit over a certain threshold you may also be required to provide proof of earnings.

After creating an account, browse through the casino's collection of slot games. UK players have access to a diverse range of themes, features, and jackpot sizes, so pick the ones that pique your interest.

To play for real money, you'll need to fund your account. Slots sites typically have a choice of payment options, which can include debit cards, eWallets, bank transfers, or prepaid cards, amongst others. Make sure to check if any deposit bonuses or promotions are available for your chosen method of deposit.

If you suffer from a gambling problem or suspect somebody you know does, then call the National Gambling Helpline at 0808-8020-133 to talk with an advisor for help and to make gambling safer for you or your loved ones, or visit the following free gambling addiction resources: www.gamstop.co.uk, www.begambleaware.org and www.gamcare.org.uk