The Best Slot Sites for 2021

Today’s UK slot players have hundreds of great casinos to choose from. Hundreds of sites host thousands of games. Many offer great bonuses and promotions. Most deliver fast and secure payouts.

Variety is great – but it complicates the task of finding the very best site for playing online slot games. To help you make a decision you won’t regret, we’ve evaluated the best slot sites in the UK, highlighting the pros and cons so you can decide which is right for you.


Numerous promotions

State-of-the art platform

Helpful customer support

18+, New Customers Only, First 3 Deposits Only, Minimum Deposit £10, Max Total Bonus £500 + 150 Spins, 30x wagering (deposit + bonus), 30x on spins, 5x conversion, selected slots only. Ts and Cs Apply.


Generous welcome offer

Licensed by UKGC

Accepts Paypal

New Players Only, 100% Match on 1st Deposit, Min Deposit £10, Max Bonus £100 and 100 Spins, 30x Wagering (Dep and Bonus), 30x on Spins, 4x Conversion, Selected Slots Only. Ts and Cs Apply.


Fantastic selection of games

Generous loyalty program

Fast withdrawals

18+ Full T&C’s Apply. New 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. Always refer to Bonus Terms –


Trusted website

Top-notch customer support

Fully licensed

18+. New players only. One welcome package per player. Max bonus bet £5, Min deposit £20 1st deposit: get 100 bonus spins, 2nd Deposit: get 120 bonus spins, 3rd deposit: get 140 bonus spins, 4th deposit: get 160 bonus spins. All spins are on slot game Book of Dead only. Bonus funds must be used within 30 days and bonus spins within 7 days. Max winnings from bonus spins are equivalent to the number of spins awarded. Spins winnings credited as bonus. Bonus funds separate to Cash funds, and are subject to 35x wagering and withdrawal requirements. Terms Apply.


Fast withdrawals

Stacked with game titles

Well-designed platform

18+, New customers only. Register with code GAMES100. Deposit using debit card only and stake £10 or more on slots to receive 100 Free Spins on Starburst. Free Spins credited within 48 hours. Free Spins are valid for 7 days. SMS validation may be required. Ts and Cs Apply, BeGambleAware.


Generous bonuses

Great customer support service

Games from leading software developers

18+, New players only,New customers only. Free spins are valid on the games : Highlander, Game Of Thrones 243 Ways, Immortal Romance, Jurassic World. Bonus split over first 3 deposits. £20 deposit minimums. 30X wagering on deposit + bonus. Slots only. Some slots not allowed. Wagering contributions vary by game. Moving from low to high wagering slots not allowed. Max bet: £5. €5000 max winnings.


Well-optimized for mobile users

Numerous payment option

Licensed by the UKGC

18+, New players only, Maximum bonus is £123, Max bet with bonus is £5, No max cash out, Wagering is 50x – Skrill & Neteller excluded, Eligibility is restricted for suspected abuse, Cashback is cash, so no wagering, Cashback applies to deposit where no bonus is included. Full T&C’s apply.


24/7 Customer Support

UKGC license

Plethora of promotions

18+, New Players Only, Extra Spins Are Available on Lights From NetEnt, Min Deposit £10, Wagering 45x Bonus, Max Bet £5 With Bonus Funds, Live Casino Play Excluded With Bonus. 100% Up To £100 on 1st Deposit, 50% up to £200 on 2nd Deposit, Welcome Bonus excluded for players depositing with Skrill or Neteller. No Max Cashout on deposit offers. Eligibility is restricted for suspected abuse. Terms apply.


Great VIP program

High tournament prizes

Generous welcome bonus

Full T&Cs apply. 18+. New players only. One bonus offer per player. Minimum deposit £20. Max bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £300 on your 1st deposit, 25% match up to £800 on your 2nd deposit, and 50% match up to £400 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements. Terms apply.


Top-notch customer support

Fantastic bonuses

Rich library of games

18+, Welcome Bonus for new players only, maximum bonus is 100% up to £100, Min deposit is £20, No max washout, Wagering is 35x bonus, max bet whilst playing with a bonus is £5, eligibility is restricted for suspected abuse, cash back is cash with no restrictions, Skrill and Neteller deposits excluded, Cashback applies to deposits where no bonus is included. Terms apply.

Here is a quick review of our research and reviewing process: 

  • We create an account 
  • We deposit funds
  • We play as many slot games as we can 
  • We withdraw funds
  • We write detailed reviews

How We Evaluate the Best Online Slot Sites

The gambling industry has grown rapidly in the last few years. It seems like every day we hear of a new casino – and with it, new casino slots games. There are countless slot variations and styles, so even the most experienced players can have a hard time choosing a site that has the best casino slots to play.
A site must have good games to be worthy of consideration, but that’s not all. Some have poor bonus offers, slow payouts, or unreliable service.

To help you avoid bad sites and give you the most reliable information, we conducted detailed research and put the best online slots sites in the UK to the test.

Our evaluations were based on this list of criteria:

User Experience

The first thing every player wants is a great gaming experience. For this reason, we wanted to see firsthand how much fun is to be had at each casino.

Here are our evaluation criteria for user experience:

  • Ease and speed of account setup: At some casinos it takes so long to create an account, get verified, and deposit funds that by the time you’re done there’s no time to play any games. We prefer sites that streamline registration, clear funds quickly, and let you get started in minutes, not days.
  • Good website design and functionality: There are tons of new online slots sites full of appealing designs and modern details. Some sites have specific themes and quirky conventions. They are designed to create a good gaming atmosphere and provide a pleasant environment for players. We gave top marks to sites that are modern, functional, and easy to navigate.
  • Mobile app: Today, players rely on their mobile phones. They play games, claim bonuses, and do all the necessary transactions from them. This is why many great casino sites also have mobile apps for iOS and Android users. We’ve checked to ensure that the most popular slots appear on both desktop and mobile platforms. All the sites on our list are fully optimised for mobile even if they don’t have a mobile app.

Welcome Bonus and Other Promotions

Each site on our list offers welcome bonuses to attract new gamblers. It’s important to look closely at these offers to see if they are as good as they seem.

We analysed each casino’s welcome offer, examining the terms and conditions in detail so we could let you know what to expect – and ultimately how to decide which site is for you.

Players usually look for the best slot sites with no deposit. We highlighted the sites where you can play for free and win real money, but most sites require at least a minimal deposit.

Many sites offer benefits for loyal members, including weekly promotions, free spins, and priority access to customer support agents. We gave top marks to casinos that offer big bonuses and reward players regularly.

Game Selection

If you’re looking for the best online casino slot in the UK, you’re most likely to find it at a casino with lots and lots of games. The best casino sites have thousands of slot games. There are lots of classic slots games with traditional three-reel slot machines, but there are also progressive slots and video slots with new titles introduced every single day.
According to online slots reviews, players like to experiment with new games, but they keep coming back to proven games with good return-to-player percentages.

We’ve evaluated sites that feature rich libraries of all types of slot games: three-, five-, and nine-reel slots; 3D games; jackpots; and progressives.

Support and Security

The next criterion for identifying the best slots site is customer support. Whether you are a practised punter or nervous newbie, at some point you will need the assistance of a customer representative.

We think a good representative needs to be polite, well-informed, and able to answer most questions quickly and reliably. Service should be quick and available 24/7. The fastest way to reach customer service agents is usually via live chat, so we give extra marks to sites that have this option.

We evaluated only UK slots sites with reputable licenses so you can feel safe and secure while playing. Government gambling commissions regulate all the sites we recommend. We also think every site should have the latest SSL protection, meaning your personal information and banking details are protected during transmission. We can’t recommend a site unless its terms and conditions include a promise to keep personal data safe from third parties and unauthorized access.

Banking Options

When we test casino websites, we deposit funds into our account with different payment methods to ensure that the process is secure and fast. We believe that a variety of payment methods is crucial for enabling an excellent gaming experience. Players should be able to choose between different payment methods – from traditional ones like credit cards and debit cards to popular e-wallets like Skrill and Paysafecard.

Here Are the UK’s Top Online Slots Sites for 2021

  1. Kerching – Up To £500 Bonus Funds + 150 Bonus Spins
  2. Pots of Luck – 100% Up To £100 + 100 Free Spins
  3. Casino Gods – 100% Bonus Up To £300 + 300 Free NetEnt Spins
  4. Captain Spins – 520 Book of Dead Spins On Your First 5 Deposits
  5. BetFred Casino – 100 Free Starburst Spins
  6. bCasino – 100% Up To £500 + 50 Free Spins
  7. Fun Casino – 100% Bonus Up To £123 + 10% Cashback
  8. Hyper Casino – 100% Up To £100 + 33 Extra Spins on Lights
  9. Grand Ivy Casino – Up to £1,500 + 100 Bonus Spins
  10. All British Casino – 100% Up To £100 + 10% Lifetime Cashback
kerching slots review
Key features

Numerous promotions

State-of-the-art platform

Helpful customer support

Licensed and regulated by the government of Gibraltar, Kerching has been one of the most popular slot sites in the UK since it was launched in 2008. Thanks to its numerous promotions and easily navigable web design, experienced gamblers and beginners are both attracted by this online venue.

Kerching’s three-part welcome bonus is one of the most generous promotions on the internet:

  • First deposit: 100% match up to £100 plus 100 spins
  • Second deposit: 50% match up to £100 plus 25 spins
  • Third deposit: 50% match up to £300 plus 25 spins

And that’s just the beginning. Kerching offers lots more promotions, including bonus spins for promoting certain games, weekly win boosts, and cash prizes.

Kerching’s easily navigable website makes it easy to play games on your PC, laptop, or mobile phone. Like other online slot sites that lack mobile apps, Kerching makes sure its games are coded with the latest technology and fully compatible with all PC and mobile platforms. You can find plenty of popular slots like Cleopatra and Pyramid at Kerching, but don’t stop there. The game library is constantly updated with new titles with some of the gambling industry’s top development shops.

Kerching’s games work perfectly, and account maintenance is a breeze. However, everyone needs help from time to time. That’s why we consider customer support a critical feature of every online slots site. Kerching has exceptional customer support that’s easy to contact. You can reach agents by phone, email, or live chat. The online slots casino phone support is available every day from 8 a.m. to midnight GMT. Unfortunately, you can’t talk to agents via live chat until you have registered an account on the website.

Kerching is an excellent choice for players who want to play games from different software companies and enjoy excellent promotions and rewards. With stellar customer service, the casino provides an excellent gaming experience for players in the UK and around the world.


Which online slots are the best?

There are numerous slot sites available, and all of them come with a rich set of games. They offer traditional three-reel varieties, as well as popular five- and nine-reel games. In the last couple of years, video slots and 3D slots have become extremely popular among UK players. There are many new slot games like Wishwood, Dragon’s Law, and Respin Rhino, to name a few.

In addition to these games from world-class developers, most casinos also feature unique games developed in-house.

Choosing the best casino slot depends on many factors. Which type of slot do you like to play? Do you want to try some new slot games? Are you looking for slot machines with free spins? These are the questions you should ask yourself before choosing a casino site. Also, there are many free UK slots and demo versions of many games that you can try before you make a deposit and start playing for real money.   

What is the most legit online casino?

We did deep research on each of the casino sites on our list to verify that all of them are legit. The UK Gambling Commission regulates the sites we reviewed, meaning that you are in a safe and secure gaming environment.

Furthermore, we listed only the UK slots sites that enable safe and secure banking solutions, and we recommend only sites where personal information is protected by technology and policy.

Which online slots pay out the most?

Triple Diamond, Wheel of Fortune, and Monopoly Big Event are just some of the slots that are known to give good payouts. Of course, there are a lot of other slots that give you a good chance of winning big jackpots. Although everything depends on luck, there are things you can do to increase your chances of winning. For example, you can check the RTP (return to player) percentage. Or you can just confine your play to the UK online slots sites that we review in this article. The sites we list here all have favorable RTP percentages.  

What should I look for in an online slot casino?

Before you start playing online slots, be sure that the casino you choose has the proper license and that it operates under a reputable gambling jurisdiction. Check out the banking options and the site’s policies about keeping personal data private. 

If all the criteria related to slot machine sites security and protection are met, check out other details. Some players like casinos with more traditional games, while others are looking for extravagant 3D slots. For some players, playing games on the go is the most important thing, so the site needs to have a mobile app or be fully optimised for mobile.

Can I play slots for free?

Yes, you can play slots for free. There are numerous free slots in the UK that provide a great gambling experience.You can go to some of the best slot sites and find free slot games there – at least for the first few days.