Best Online Slots – To find them simply choose from one of the casinos in our Top 10 UK Casinos list. Each one has over 600 slot games to play and you can get free spins for certain slots games when you make your first deposit at a new casino.

Top 10 UK Casinos

1
casino gods
4.7 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 300 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org.

2
casoola
4.6 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 200 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org.

3
kassu
4.6 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 300 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org

4
casino planet
4.6 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 200 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org.

5
sloty
4.6 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 300 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org.

6
casino lab
4.5 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 300 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org

7
casino joy
4.5 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 200 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org.

8
genesis casino
4.4 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 300 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org

9
vegas hero
4.3 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 100 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org.

10
pelaa
4.3 / 5
TOTAL SCORE

Claim £100 Welcome bonus plus 150 FREE Spins!

18+ Full T&C's Apply. New UK players Only. £10 min. deposit. £5 max. bet using Bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max. Free Spins winnings £100. Skrill + Neteller excluded. www.begambleaware.org.

Slots – The Basics

Slots in the UK are the most popular type of online casino game. They often come with fun and intuitive gameplay, offer great rewards on your investment, which can reach several million pounds with progressive slots, and some have full demo versions for you to learn more about the slot games.

Playing slots doesn’t require any skill whatsoever and anyone at any time can theoretically win with a spin. The only option for online slots players is to spin and hope that each spin is a favourable one. Slot games can also come in many varieties and have developed enormously since the early days of online casinos.

Some of the best online slots sites can be found right here in our Top 10 Casinos list. Many of whom are also offering free spins for selected slot games for new depositing customers. Why not take a look around our casinos list and see which slot bonus you like.

A Brief History Of Slot Machines

slots

The very first slot machine was created in San Fransico, in 1894, by Charles Fey, and was named ‘The Liberty Bell’. This used three spinning reels with five symbols on each. These symbols included; bells, hearts, spades, diamonds, and horseshoes.

The jackpot prize for this was the three bells which produced a payout of 50 cents. Over 100 of these types of machines were created in total. Sadly, only four survive today due to the tragic events of the 1906 earthquake and subsequent fire in San Francisco.

Fast-forward in time by approximately a century and we see the biggest advancement in the history of slots with the invention of the online casino. This would be the catalyst that would allow for a whole new generation of slot machine games to be spawned.

Slots in 2021 come in all shapes and sizes with almost every conceivable theme being used to build slot games around. Millions of people now play slots daily at online casinos.

New Slots 2021

There are thousands of slots available online for UK casino players right now, and, hundreds more are expected to be released throughout the year. Our team of casino reviewers also study the latest slot games and inform us about the ones worthy of attention.

New slots with famous brands are often an instant-hit for UK slots fans and the latest slot ‘Gordon Ramsey’s Hells Kitchen Slot’ is sure to be a success. Other notable new slot games for 2021 include; Thor’s Vengeance, Popwins, Reel Desire, Ancient Eclipse, Hand of Midas, and, Rome: The Golden Age.

We will keep you updated with regular articles about the best new slots as and when they are released. It is always exciting for us to be able to be one of the first to sample a new slot game and we’re always pleased to deliver the good news to our readers when we find a gem.

All of the casinos listed in our Top 10 UK Casinos table give you access to a number of the leading software providers. This means you will be able to play all the best new slots games at the best online casino sites right here.

Slot Games With The Highest Payouts

There are lots of great games you can choose from. Top-Quality iGaming developers, such as NetEnt, have created a rich portfolio of high-paying games. When it comes to this particular genre of games, there is hardly a better-paying studio than NetEnt, for multiple outstanding titles. 

slots

Blood Suckers is one of the most intriguing slot experiences you will find in the UK. The game comes with outstanding 98% payout, which is easily one of the industry’s highest. With low volatility, Blood Suckers will provide you with steady influx of small profits with the occasional big chunk of money coming your way.

Playtech’s Goblins Cave comes with nearly 100% in Return to Player (RTP) rates which is quite generous, to begin with. The game is slightly different than what you have grown accustomed to, but Playtech has managed to create a product that will strike home with gamers of all stripes.

slots

If you are on the lookout for the most generous slot in the UK, Goblins Cave will be an option you simply cannot turn down.

Best Slots Bonuses

When shopping around for a bonus, you will always need to check if the wagering requirements are in line with the industry’s best practices. For example, you will seldom want to play at a casino where the playthrough requirement reaches over 35x for both the deposit and the bonus funds you have been allocated.

The best casinos that sports the richest selection of games will provide you with quite the choice when it comes to bonuses. You can pick from, deposit, no deposit, free spins, and sign-up promos. There are other promos you can readily tap into as well, and they will be revealed to you as you play or by simply visiting the promotion page. 

When you acquire a bonus to use on slots, your choice may be confined to several games. Thankfully, all of these games are quite worth playing. Here are some of the best ones you can play today:

  • Starburst
  • Book of Dead
  • ThunderStruck II

The Most Popular Slots in the UK

There is an overwhelming choice of games and it is understandable that you often wonder which ones to play. Many of the most popular games in the UK have been developed by reputed studios that provide you with highly entertaining gameplay. Today, you can choose from hundreds of games that will be played for years to come, including:

  • Immortal Romance
  • Gonzo’s Quest
  • Book of Ra
  • Guns N’ Roses
  • Avalon II and others

There are many factors that determine the popularity of the game – looks, gameplay, payouts, available bonus levels – they all come together to rank the slot machine in relation to other available products on the market.

Slots UK

The UK is a magnet for the world’s best game developers. The market hosts hundreds of casinos and that automatically makes it quite attractive for some of the best-established slot makers. Recommended suppliers include Fugaso, Playtech, NetEnt, BetSoft, Microgaming, and Play N’ Go

Each studio has created a number of products that are recognisable for their unique design, storylines, and payouts. The majority of slot games today combine multiple elements of 3D games and decision-making games. Yes, it’s not just about clicking “Spin” anymore, but you can actually influence the outcome of a game by making an actual decision.

Mobile Slot Games

Any slot produced in 2021 will run smoothly on any device that you can carry freely with yourself. Your iPhone and iPad or even Android smartphone will allow you to enjoy slot games in real-time. Sometimes you can play directly in the casino via your browser, but usually you will be offered to download an app instead. The apps are quite easy to install and very easy to use. If you had to choose, we recommend that you pick an app.

The Best Slots Online

All games that are available to UK customers here today at Best Online are accomplished and they offer highly-entertaining gameplay. This can be seen in all the new and exciting bonuses and variations that you will find on the market. 

Games come with a Scatter bonus and other sorts of new symbols. You don’t have to just click the “Spin” button any longer. You can also interact with the game by shooting, jumping, making a specific choice, and more. Slots in the UK are about to get even more exciting in 2021! 18+

Slots FAQs

Every slot game has a different RTP (return to player). You can increase your odds of winning bigger bonuses by carefully choosing slots that have a favourable RTP.
Yes, as previously mentioned, slots account for the majority of online casino players in 2021. Progressive jackpot slots are particularly popular too with prizes worth millions of pounds to be won with a single spin, it is clear to see why!.
Once you have chosen your casino from our Top 10 UK Casinos list, simply click "play" and you will be sent to your chosen casino. Register your new account, deposit and your slots bonus will be automatically credited to your playing funds.
There are no expert tricks or tips to winning on slot machines. Each spin is completely random and without bias as to whether you are a casino veteran, or this is your very first spin. All you can do is click spin and hope it's a good one!.
You can claim online slots bonuses from our Top 10 UK Casinos list. Each casino listed has a fantastic welcome offer that includes a deposit bonus and free spins.