Best Online Slots UK

Looking for the best slots sites UK players head to?  You’ve come to the right place.  While you may think going to a site with the most appealing deals and bonus codes is the best course of action to take, there are plenty of factors and features you’re going to need to bear in mind.

There are thousands of different games out there in April 2021 – how do you know which sites have the best online slots features?

Best Slot Sites

From our research, this is a list of the best slot sites:

  • Buzz Bingo Slots

    Buzz Bingo Logo
    This is a top-rated slot site on the web, with plenty of games and features.

    First depositors only. Deposit & Stake £20 on Midnight Wilds slot game: Get 110 Bonus Spins on Midnight Wilds slot at 5p (5 lines x 1p) per spin. Jackpot cannot be won when using free spins. Customers will also be eligible for existing standard sign up bonuses if they stake an additional £10 on Bingo, see T&Cs for details. £5 min. withdrawal on winnings. 18+ Please play responsibly. Full T&C's Apply

  • The Sun Vegas

    The Sun Vegas Logo
    100% BONUS UP TO £300
    A well-known tabloid with the very best slot games across the web.

    New Customers Only. 100% Deposit Match up to £300. Min deposit £10. 50x Wagering applies to the Bonus + Deposit amount, playable on selected slots only. Bonuses must be accepted within 72 hours and are valid for 30 days and wagering requirement must be completed in this time. Bonus amount can't be withdrawn. Max bet restrictions apply. Not all games contribute equally to wagering requirements. Deposits made with Neteller and Skrill are not valid for this promotion. 18+ Full T&C apply. Please Gamble Responsibly. Full T&C's Apply

  • Wizard Slots

    Wizard Slots Logo
    500 FREE SPINS
    Looking for a site full of top games? Wizard Slots has a range of great slots.

    New Players Only, Min Deposit £10, £8 Max Win Per 10 Spins, Max Bonus Conversion Equal To Lifetime Deposits (Up To £250), 65X Wagering Requirements. Full T&C's Apply

  • Slots Baby

    Slots Baby logo
    Play the very best slot features on this website today.

    New Players Only, Min Deposit £10, £8 Max Win Per 10 Spins, Max Bonus Conversion Equal To Lifetime Deposits (Up To £250), 65X Wagering Requirements. Full T&C's Apply

  • Slots Racer

    Slots Racer Logo
    If you are racing to find the best slots game, you might want to check out this site!

    New Players Only, Min Deposit £10, £8 Max Win Per 10 Spins, Max Bonus Conversion Equal To Lifetime Deposits (Up To £250), 65X Wagering Requirements And Full T&Cs Apply. Full T&C's Apply

  • 888 Casino

    888 Casino Logo
    If you are thinking about spinning the roulette wheel and playing slots, why not try this top rated site?

    No Deposit Offer: New players only. 30 Free Spins (FS). FS must be claimed within 48 hrs of receiving the email and expires after 14 days. FS wins are credited as bonus and capped at £15, exc. JP win. Welcome Bonus Package: £20 min deposit. 1st deposit immediate 100% up to £100 bonus. 2nd -5th deposits must be done and wagered 3 times within 7 days of the 1st deposit, to receive 30% up to £350 bonus per deposit. Bonus wins are capped at £500. To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days. Wagering req. vary by game. This offer may not be combined with any other offer. Deposit balance is available for withdrawal at any time. General withdrawal restrictions apply. Full T&C's Apply

  • mFortune Casino

    mFortune casino Logo
    This is one of the best-rated slots sites on the internet. Why not give it a try?

    18+. New players only. 20x wagering requirement. Expires after 7 days. Max withdrawal from bonus winnings £50. T&Cs apply, Full T&C's Apply

  • Mr Spin

    Mr Spin Casino Logo
    If you are looking to spin the fruit machine, this is one of the best slots site to choose from.

    18+. New players only. Up to 50 (20p) free spins on Reel Royalty only. Winnings paid as bonus credit with a 20x wagering requirement. Bonus expires 7 days after registration. Up to 100% deposit match of the first deposit, decided by lobby game. Max £100 awarded as bonus credit. 7 days expiry once claimed. Max withdrawal from bonus winnings £50. Withdrawing Unspent Qualifying Deposit will exclude the player from these promotions. T&Cs apply Full T&C's Apply

  • BGO Casino

    BGO Logo
    BGO is a well known brand in the casino industry and the site offers the greatest slot games.

    UK only. Win up to 500 spins from Mega Wheel on 1st deposit. 24-hour expiry. Max bet £2.50, Max Spins win £8 per 10 spins, Max Bonus win £150, selected games & 65x wagering on winnings. Min deposit £10. No Neteller/Skrill. Full T&C's Apply

  • 32 Red Slots

    32Red Slots Logo
    GET A 150% BONUS UP TO £150
    Enjoy one of the best slots sites out there when you play at 32Red.

    New accounts only. Min. £10 deposit, debit/credit card and PayPal only. 50x wagering, game contributions vary, max. stake applies, 7 day expiry. See full terms. Full T&C's Apply

  • Unibet Slots

    Unibet Slots Logo
    DEPOSIT £10 GET £40
    Did you know that Unibet has some of the great slots games available?

    New customers only. 18+, Min deposit £10. Money back as bonus. Wagering requirements: Sportsbook 3x at min. odds of 1.40 (2/5), Casino 25x. Only one bonus can be used at a time, Sportsbook bonus must be wagered before using the Casino, unless the bonus has been forfeited. Bonus will expire after 7 days of opt-in. Full T&C's Apply

  • Slotzo

    Slotzo Logo
    If you would like to play the best slot games, try this site out.

    New players only. 18+. Min. deposit amount £20. Max wins from extra spins £100. Wagering requirements applied on all bonuses x35. 50 extra spins will be credited on first deposit, 50 extra spins on second deposit and 50 extra spins on third deposit. T&Cs Apply. Full T&C's Apply

  • Slots Magic

    Slots Magic Logo
    If you are ready for some exciting games, make sure you try out this top casino and slot site.

    First Deposit Only. Min. deposit: £10, max. Bonus £50. Game: Rich Wilde and the Book of Dead, Spin Value: £0.10, Max Extra Spins:50. WR of 30x Deposit + Bonus amount and 60x Extra Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the extra spin winnings and bonus amount or £5 (lowest amount applies). Extra Spins must be used before deposited funds. Bonus Policy Applies. Full T&C's Apply

  • Pots of Luck

    Pots of Luck Logo
    Feeling lucky? This is one of the best slot sites on the web, so why not give it a try?

    New players only. First deposit only. Min deposit £10. Min 100 bonus spins, max 300 bonus spins on selected slots only. 30x wagering. 4x conversion. Full T&C's Apply

  • All British Casino

    All British Casino Logo
    100% WELCOME BONUS UP TO £100 + 10% CASHBACK
    Here you can play many of the best slots and casino games.

    New customers only, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C's Apply

  • CasiGo Casino

    CasiGo Casino Logo
    CasiGo is top rated casino site that has a lot to offer both new and existing players!

    New Customer Offer. T&Cs Apply. 18+. Please Gamble Responsibly. Full T&C's Apply

  • Jonny Jackpot

    Jonny Jackpot Review
    Jonny Jackpot is a great online casino site that has some amazing deals!

    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 75 bonus spins, 3rd deposit: get 125 bonus spins, 4th deposit: get 50 bonus spins, 5th deposit: get 150 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. Spins winnings credited as bonus. Bonus funds separate to Cash funds, and are subject to 35x wagering and withdrawal requirements. Terms Apply. Full T&C's Apply

  • Captain Spins

    Captain Spins Logo
    If you are looking for a fun online slot website, we recommend having a look at Captain Spins!

    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. Full Terms Apply Full T&C's Apply

  • Spin Rider

    Spin Rider Logo
    Ready to try out the slots? Spin Rider is one of the greatest slot sites out there.

    18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100 match up to £300 on your 1st deposit, 40% match up to £1000 on your 2nd deposit, and 80% match up to £500 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. Full T&C's Apply

  • WatchMySpin

    WatchMySpin Logo
    UP TO £350 + 200 SPINS
    If you are searching for something a bit different, WatchMySpin might be the best slot site for you.

    First 3 deposits only, min deposit £10. Max total bonus £350 and 200 bonus spins on selected slots only. 40x wagering (deposit + bonus). 40x on spins, 4x conversion. Full T&C's Apply

About Online Slots

Background of stadium with podiums and Danger High Voltage, Queen of Riches logos and question mark holding trophy. Blue/white square with text to left "Best Online Slots UK", CTA below and BoomtownBingo logo under that.
Check out Best Online Slots UK on BoomtownBingo!

If you don’t know where to get started, then check out our list of the best sites and you don’t go far wrong playing any of these.

One of the great things about playing slot machines online is that unlike other casino and bingo games, it translates incredibly well. In fact, many of the new slots games you are playing online are powered by the same software that is powering the games on the casino floors.

Why Choose the Best Slot Sites to Play?

Playing slots online in 2021 is a lot of fun.  Therefore, plenty of people will be looking for big, colourful titles which are well-reviewed by industry experts and seasoned gamers alike.  However, a lot of the time, finding the best slots sites online is all about feeling your way around.

You can take on plenty of slot games in April 2021 at the best sites for free, which means you’ll never have to pay in your own cash until you’re ready to do so. Check out some of the latest online slots too if you’re interested in the new software.

In this guide, we’ll be looking at some of the best brands around for slot players, and will be considering what you’ll need to bear in mind during your own search.

We’ve made it easier on players across the UK by setting up guides and reviews of great games and slots sites available for you to play at right now.  Don’t just be swayed by an attractive deal.  Look a little deeper at how a site works, how they treat their customers and regular players.

Remember – you can sign up at multiple slot sites and online casinos!  You don’t have to be tied to any one brand.  Therefore, do take a look at our guide and play your way across the various catalogues and titles available.  Let’s dive in and take a look at what you’re going to need to bear in mind.

  1. Buzz Bingo Slots
  2. The Sun Vegas
  3. Wizard Slots
  4. Slots Baby
  5. Slots Racer
  6. 888 Casino
  7. mFortune Casino
  8. Mr Spin
  9. BGO Casino
  10. 32 Red Slots
  11. Unibet Slots
  12. Slotzo
  13. Slots Magic
  14. Pots of Luck
  15. All British Casino
  16. Spin Station
  17. Spin Rider
  18. Temple Nile

What is RTP for Slots?

The best online slots games are those which, many would argue, pay well.  This is measured by something called the RTP, or Return to Player ratio.

This measures how often or how much a game will pay out over its whole lifetime.  It may not be an accurate measure of how much you stand to win overall throughout your plays, but it will give you an indication of how generous a game can be.

Best Slot Sites UK With Exciting Bonus Offers

RTP aside, there are plenty of factors we bear in mind when it comes to rounding up the best slot sites UK players love to head to.  Here is just a brief breakdown of the factors we feel you should always keep in focus.

  • Look at current bonus codes and deals. Do they offer you plenty of money to spend on a variety of games, or are they restricted to certain games?  What are the wagering requirements like?  Will you have to pay back more money than is worth it in the long run?
  • Mobile compatibility. Does a site work well across multiple, portable devices?  Are there free apps and programs available for you to download?  Will all the slots games work on smartphones and tablets? Visit our mobile slots page for more information on these features.
  • Developers and technology. Which software developers are on board?  Is there a live play option?  What types of games are available to play, and do they compete well with slots catalogues elsewhere?
  • What options are there when it comes to paying in and cashing out? Can you withdraw using the same method you pay in with?  Does the site accept e-wallets, or just cards and bank transfers?
  • Is the site fully secure? All good slot sites should have updated security certificates and should protect payments at all times.
  • Does the site offer plenty of questions before you start? Is the FAQs section relevant, and are you confident that you want to go ahead and play?
  • Is there plenty of customer support available? What are players and industry experts saying about the site and its games?  Is there help available when you need it?
  • Can you win progressive jackpots, and if so, what is the process for claiming? Are the terms and conditions for claiming and withdrawing generally reasonable?
  • Are there regular promotions and deals which you can take part in once you’re a loyal player?
  • Finally, do always check the licensing of a website before you get started. Most sites available to play in the UK will be fully regulated and licensed, however, it is still worth you doing the checks.  Don’t worry – we only ever list and work with sites which are adequately licensed and fully regulated.

Check out the image below for a summary of the key factors we look at to assess the best online slots brands:

What to Look For With The Best Online Slots Brands Infographic by Boomtown Bingo
6 Factors We Look At For Best Casino Sites!

This may not be an exhaustive list of everything you wish to look for in a top slot site.  However, these points form the basis for what we look for from great sites we list and review.  We think there’s more to a great slot site than just the games and deals.  Therefore, do make sure to look into all of the above before you get started.

Choosing Slot Bonuses

What makes for the best slots bonuses? These deals and offers can and will change, which means it is always worth keeping an eye on our reviews and guides to learn more.  Big deals and bonus spins on selected games pop up all the time!  Rest assured, we work to make sure the sites we partner with are always ready to splash the cash for new joiners and regular players alike.

Best Online Slots Games with Top Bonuses UK

The best slots bonuses out there in our collective opinion, however, are those which let you really dig into a wealth of different games.  While free spins deals and bonus codes will let you sample new games for free, we think the best bonuses out there match your cash when you first sign up.

Claim Your Offers

If you’re serious about signing up for online slots sites, you will likely be putting real money in anyway – so why not double or triple it?  A 100% cash matching deal will double the money you put in, and so forth.  However, you should also always keep a close eye on wagering terms and conditions.

While some of the best slot sites UK have done away with wagering completely, it is much more likely you will come across a site which will expect you to invest real money before you take any away. High wagering, particularly 80x and above, may be seen as particularly restrictive.  Therefore, it always pays to read up on that all-important fine print!

Top-Rated Slots Features

If you’re looking for the top-rated slot games online, we’re ready with lists you can depend on.  Some of the most popular slots titles are those which have high RTPs, in the sense that they will be more likely to pay out more often.  However, as mentioned, this isn’t always going to be guaranteed.

Some of the top slot games online are those which are simply a lot of fun to play.  Big titles and brands such as Rainbow Riches have expanded their remit over the years, which means there are now three or four different takes on the game which you’ll find at sites across the web.

Some of the best-rated slot games include Book of Dead, Starburst, Legacy of Ra, Siberian Storm, and those connected with Jackpot King and Party Pots.  These are progressive win titles, which give you the chance to play for thousands, even millions of pounds.  You have to be in it to win it, as they say.  Why not take a look through the best slot sites UK gamers go for and see what takes your fancy?

Are the Best Slot Sites Safe?

We only promote slot brands which are completely secure and safe to use. All the websites you find here will be fully licensed by an independent body. This means they have to follow guidelines relating to fair play and protecting your personal details.

Our aim is to find the sites which offer exciting games and promotions for players. We always check the security of these sites when it comes to payments and personal information. However, we would always recommend using a secure payment method like PayPal or Paysafecard when playing online.

We have picked out the best and most secure mobile slots sites in our full review and analysis.

Play Now

So if you want to find the latest promotions and exciting games, why not sign up to a slots site today?

If you are interested in playing the best online slots in the UK, make sure you click on the play now button next to the site of your choice to sign up. Make sure to claim their latest welcome offer for April 2021 as well as you can get the most for your money.