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Best Online Slots Sites

The best online slots sites deliver endless action. With our list of the top slot sites in the UK, you will find amazing games to enjoy. New and exciting games are always being added, so watch for new slots releases in 2021.

Start playing at the best slot sites and be sure to check out our recommended sites below.

20+ Top UK Slots Sites for 2021

  • 1

    Get Up To €/$100 + 50 Free Spins
    • A variety of fun promotions and the chance to win a car
    • The VIP Club offers great prizes.
    • A variety of payment options

    18+ BeGambleAware®. New players only. T&C’s Apply. Please Gamble Responsibly. See official website for details.

  • 2

    Deposit £5, Get £5 Bonus + 20 Free Spins. Use Promo Code:

    BE1
    • Nice selection of games
    • High value promotions
    • Mobile accessibility

    First-time depositors only (+18). Valid until further notice. Min Deposit: £5. Max Games Bonus: £5. To withdraw games bonus & related wins, wager x40 the amount of your bonus. 20 Spins (FS). FS are valid on specific game for 7 days. FS wins cap: £2. FS wins are granted in games bonus after all FS are used and must be wagered x40. Games Bonus wins cap: £100 + the initial bonus amount. Wagering req. vary by game. UK only: Your deposit balance (defined as Transaction Balance under our Withdrawal Policy) is available for withdrawal at any time. Country restrictions apply. T&Cs apply

  • 3

    Get Up To 50 Free Spins – No Wagering Required
    • No wagering requirements for the bonuses
    • An impressive collection of games
    • A long list of industry-leading game providers

    18+ BeGambleAware®. New players only. T&C’s Apply. Please Gamble Responsibly. See official website for details.

  • 4

    100% Bonus, up to £25 & 25 Free Spins. Use Promo Code:

    BAZAAR
    • Loyalty Programme offering up to 15 Daily Free Spins
    • Exclusive Daily Offers and Promotions
    • New Globalcom Slots site on the Dragonfish network

    18+ BeGambleAware®. First-time depositors only (18+ UK Only – excluding players based in Northern Ireland). Min Deposit £10. Max Offer: 100% Bonus up to £25 Bonus Plus 25 Free Spins. Promo code: BAZAAR Bonus winnings must be wagered 60x Games bonus winnings will be capped at £100+ original bonus amount. Free Spins are valid for 7 days. Free Spins winnings are credited as bonus funds with 40x wagering. Free Spins winnings are capped at £2.5. Wagering contribution varies by game. We reserve the right to deny bonuses based on abusive bonus activity across sites operated by the Company. The deposit balance is available for withdrawal at any time(UK only). Odds of winning vary between players depending on gaming and deposit activity. General withdrawal restrictions & full T&Cs apply. Valid until 31/12/2021

  • 5

    100% Bonus, Deposit £10 & Get up to £30 and 25 Spins. Use Promo Code:

    POWER
    • A great variety of slots and exciting scratch cards games
    • Only the most reliable payment methods are available here
    • A very beneficial welcome offer on your first deposit

    18+ BeGambleAware®. First-time depositors only (18+ UK exc. NI). Min Deposit £10. Max Offer 100% Bonus up to £30 & 25 Free Spins [Game of our choice]. Free Spins winnings are capped at £2.50 and credited as bonus funds with 40x wagering. Bonus funds must be wagered 60x before withdrawal. Slots Bonus funds winnings are capped at £100 + original bonus amount Free Spins expire after 7 days. Promo code: POWER. We reserve the right to deny promotional offers based on abusive bonus activity across sites operated by the Company. Deposit balance available for withdrawal at any time (UK only). General withdrawal restrictions & full T&Cs apply. Valid until 31/12/2021

  • 6

    Get 30 Free Spins No Deposit Required on Signup
    • Up to £100 bonus & 30 free Spins
    • Multiple banking options availble
    • Offers free spins on Starburst

    18+ BeGambleAware®. UK players only. New players. Register & get up to 30 Free Spins [FS]. 10 FS*3 on selected slots over 3 days (10 FS per day upon log in). Must be claimed by 23:59 on day of grant & valid for 7 days once claimed. FS wins granted in bonus after all FS used; wins set at £1–£4 (per 10 FS). Reg bonus wins capped at £100 exc. jp. wins. Deposit min £10, get 100% Bonus (max £100) + 30 FS (must be claimed within 7 days & valid for 7 days once claimed). FS available on specific games; wins granted in bonus after all FS are used. Bonus wins capped at £400 exc. JP wins. Wagering req. apply: 30x bonus funds (vary by game); T&Cs Apply

  • 7

    Deposit £10 Get up to 300 Spins
    • Allows you to play instantly
    • Available for all platforms
    • Live Chat

    18+ BeGambleAware®. New players/fist-deposit only (18+ UK exc. NI). Min deposit £10. Min offer 100 Spins. Max offer 300 Spins. Wagering 30x. Max conversion 4x. Valid on selected slots only. Withdrawal and Full T&C’s apply. Valid until further notice.

  • 8

    10 Free Spins No Deposit Required
    • Very generous welcome offer
    • Loyalty programme for all customers
    • Vast selection of online casino games

    18+ BeGambleAware®. Registration Offer: UK players only. Register to get 10 Free Spins [FS] on Irish Luck. Must be claimed by 23:59 & valid for 7 days once claimed. FS wins granted in bonus after all FS are used; wins set at £0.1-£5. Reg bonus wins capped at £100 exc. JP wins. Welcome Offer: 1st time depositors only. Min deposit £10, get 100% bonus (max: £100) plus 100 FS (granted in sets of 10 every 3 days) on specific games; each FS set is valid for 48 hours from granting; wins set at £1 – £10 per 10 FS. Bonus wins capped at £100 exc. JP Wins. General: Bonus valid on specific games only. Wagering req. apply: 30x bonus funds (vary by game); Full T&Cs apply.

  • 9

    200% Bonus, up to £24 & 24 Free Spins. Use Code:

    WARM
    • 300+ Games Available
    • Mobile friendly website
    • SSL Encrypted site so player information is always kept private

    18+ BeGambleAware®. First-time depositors only (18+ UK Only – excluding players based in Northern Ireland).Min Deposit £10. Max Offer: 200% up to £24 Bonus Plus 24 Free Spins. Promo code: WARM Bonus winnings must be wagered 60x Games bonus winnings will be capped at £100+ original bonus amount. Free Spins are valid for 7 days. Free Spins winnings are credited as bonus funds with 40x wagering. Free Spins winnings are capped at £2.4. Wagering contribution varies by game. We reserve the right to deny bonuses based on abusive bonus activity across sites operated by the Company. Deposit balance is available for withdrawal at any time(UK only). Odds of winning vary between players depending on gaming and deposit activity. General withdrawal restrictions & full T&Cs apply. Valid until 31/12/2021

  • 10

    Get 10 Free Spins No Deposit Required. Use Code “KING10”.
    • No deposit free spins for new players
    • Powered by Microgaming
    • Loyalty Programme available

    18+ BeGambleAware®. New players only. Wagering occurs from real balance first. 50x wagering the bonus or any winnings generated from free spins, contribution may vary per game. The wagering requirement is calculated on bonus bets only. Bonus is valid for 30 Days/ free spins valid for 7 days from issue. Max conversion: 3 times the bonus amount or from free spins: $/£/€ 20. Excluded Skrill deposits. Full Terms Apply.

  • 11

    Get £5 Free No Deposit Bonus
    • A very trustworthy brand
    • Extremely generous welcome bonus offers
    • Super-fast payouts with many payment methods

    18+ BeGambleAware®. Welcome Offer: 1st time depositors only.Min Deposit £10.Max Games bonus £50.To withdraw games bonus & related wins, Wager 30x (deposit + bonus) and 30x free spins winnings.100 Free Spins [FS] will be granted equally across 4 days. FS are valid on specific games, for 14 days from granting date. FS wins are granted in games bonus after all FS are used. FS wins are set at min £1. FS wins cap: £25. Games Bonus wins cap: £400 + the initial bonus amount.Wagering req. vary by game.Deposit balance is available for withdrawal at any time. General withdrawal restrictions & T&Cs Apply. | Sign Up Offer: 18+ new players only. Offer valid until further notice. Valid payment card details required. Max win capped at £2.50 games bonus funds. Wagering requirement is 30x free spins winnings. Contribution varies by game. Max bonus conversion to cash capped at £100. General withdrawal restrictions & T&Cs Apply.

  • 12

    Win up to 500 Free Spins
    • Up to £600 in bonus cash.
    • Get more free spins and free money
    • Easy deposit and withdrawal terms

    18+ BeGambleAware®. 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 HERE

  • 13

    Get up to £400 Welcome Bonus + 175 Free Spins
    • Over 400 casino games from the top providers
    • 24 Hours fast customer support
    • Weekly exclusive promotions

    18+ BeGambleAware®. New players only. First deposit only. Min Deposit £10. Max 50 bonus spins on selected slots only. 2x conversion. 20x wagering. Cashback on losses up to £200 for 48 hours from the first deposit. T&Cs apply

  • 14

    Get 30 Free Spins Bonus, Use Promo Code “V30”

    • Trustworthy operator
    • Zero Wagering
    • Top-notch bingo games

    18+ BeGambleAware®. New players only. First deposit only. Min deposit & spend £10. Max 30 spins on VALHALLA at 25p per spin. Spins credited upon spend of £10. Full T&Cs apply.

  • 15

    20 Free Spins on Starburst! No Deposit Required!

    • Stellar customer support provides seamless casino experience
    • Game selection exceeding 500!
    • Progressive jackpots offer big win capabilities

    NEW PLAYERS ONLY, NO DEPOSIT REQUIRED, VALID DEBIT CARD VERIFICATION REQUIRED, £8 MAX WIN PER 10 SPINS, MAX BONUS CONVERSION £50, 65X WAGERING REQUIREMENT, FULL T&CS APPLY HERE

  • 16

    Up to £10 Free Welcome Bonus, No Deposit Needed!
    • Up to 200% first deposit bonus + 100 free spins
    • Great selection of proprietary games
    • Availability of live games

    18+. New players only. 20x wagering requirement. Expires after 7 days. Max withdrawal from bonus winnings £50. T&Cs apply, BeGambleAware.org

  • 17

    Get Up To £10 Free Bonus + 200 1st Deposit Match
    • Up to £10 Free Bonus
    • £5 bonus for referring a friend
    • Optimized for mobile device users

    18+. New Players Only. Up to £10 bonus credit and up to 200% first deposit match available via Feature Game. Deposit match available after first deposit. Max bonus £100. 40X wagering requirement. £10 bonus credit 7 days expiry. Deposit bonus 30 days expiry. Max withdrawal from up to £10 bonus winnings is £50. T&Cs apply, BeGambleAware.org

  • 18

    Get Up To £10 Free Bonus + 200 1st Deposit Match
    • New player no deposit bonus
    • Plenty of banking options
    • Huge selection of slots games

    18+. New players only. No deposit required. Up to 50 locked free spins (FS18p) on sign up, usable on Rainbow Slots only. Expires 7 days after registration. All winnings paid as bonus credit. Bonus credit has 40x wagering requirement. Max withdrawal without depositing is £50. You may withdraw the funds in your cashable credit account. T&Cs apply, BeGambleAware.org

  • 19

    20 No Deposit Free Spins on Wolf Gold

    • Huge bonuses up to 500 free spins.
    • Amazing theme with lots of functionalities.
    • Wide range of bingo and slot games.

    NEW PLAYERS ONLY, NO DEPOSIT REQUIRED, VALID DEBIT CARD VERIFICATION REQUIRED, £8 MAX WIN PER 10 SPINS, MAX BONUS CONVERSION £50, 65X WAGERING REQUIREMENT, FULL T&CS APPLY HERE

  • 20

    Get 20 Free Spins on Fruit Party, No Deposit Asked.

    • Over 600 games
    • The offers are pretty fun and generous
    • You don’t have to download anything

    NEW PLAYERS ONLY, NO DEPOSIT REQUIRED, VALID DEBIT CARD VERIFICATION REQUIRED, £8 MAX WIN PER 10 SPINS, MAX BONUS CONVERSION £50, 65X WAGERING REQUIREMENT, FULL T&CS APPLY HERE

  • 21

    20 No Deposit FS on Diamond Strike

    • Responsive customer support
    • Cash back available
    • Fully licensed site

    NEW PLAYERS ONLY, NO DEPOSIT REQUIRED, VALID DEBIT CARD VERIFICATION REQUIRED, £8 MAX WIN PER 10 SPINS, MAX BONUS CONVERSION £50, 65X WAGERING REQUIREMENT, FULL T&CS APPLY HERE

Finding the Best Sites for Slot Action

In 2021, you will find hundreds of operating sites that present a huge assortment of slot games. You will want to take some time to find the best online slots sites in the UK. With many licensed and regulated sites operating, there are outstanding opportunities to play and win some of the best games online.

Slot sites all have something different to offer, and you will want to know what to watch for. When you are choosing the top slots site, different things can enhance your experience. Below, you will find a list of things that you should consider when selecting where to play.

  • Software used to power the site
  • Variations of slots, including progressive jackpot games
  • Sites that routinely audit games and provide verified payout rates
  • Bonuses for slot play
  • Slot tournaments
  • New games added on a regular basis

By taking time to watch for these things, you will be able to find a trusted UK slots site that will meet all of your gambling needs. Check out our list of recommended sites and signup for a new account today. You can quickly begin spinning the reels on some of the most popular games in the industry.

Best Online Slots

Popular Developers of UK Slots

Software providers play a key role in your online slot experience. At the best UK casinos, you will find trusted software being used. With leading providers, there are always new and exciting games being offered. As a new player, you will want to become familiar with the different developers offering today’s best slots.

  • Microgaming – This is the leading developer of slot games online, and you will find hundreds of titles available. Since 1994, Microgaming has been powering the best online slots sites and offering popular titles. The company is known to offer the largest selection of games and the highest paying progressive jackpot titles.
  • NetEnt – Almost as popular as Microgaming, NetEnt features instant play games and award-winning titles. Founded in 1996, NetEnt provides games with innovative bonus rounds, excellent themes, and the best animations and graphics. Progressive fans will enjoy a wide assortment of titles. NetEnt’s Mega Fortune is listed in the Guinness Book of World Records for offering the largest single spin win of €17 million.
  • Playtech – Playtech has been offering online slots since 1999 and is known for the offering of Marvel comic slots. There are also amazing progressive titles like Beach Life and Gold Rally, offering the chance to win millions. You will enjoy a diverse portfolio of titles at our recommended Playtech sites.
  • NextGen – NextGen slots stand out in the industry as being the most visually appealing. The games are known to have some innovative features like Slide-a-Wild and Up Wilds. With top-rated games like Merlin’s Millions and Doctor Love, you will find everything you need to meet your slot needs at a NextGen site.

These are the most popular providers used at UK online casinos, but you will also find slots from other developers. Watch for sites that use multiple software providers to deliver a portfolio of over 1000 games.

If you are a true slots fan, you will also want to check out titles from BetSoft, Realtime Gaming, Play’n Go, IGT, Williams Interactive, Yggdrasil, and Rival.

Types of Slot Games to Enjoy

The best slots sites in the UK in 2021 will offer you a huge assortment of slot games. The actual titles that are supported will depend on what software developer is powering the site. No matter where you choose to play, you will find popular games and titles that offer some outstanding payouts.

Before you start placing any wagers on slot games at any of our online casinos, be sure to understand the difference between the types of slots. Some players have different preferences and bankrolls. You will want to know what types of games are featured at sites.

Below, you can learn more about the popular variations of slot games and will quickly be able to get started spinning for some great payouts.

  • Traditional/Classic Slots – These are the most basic of all slot games at an online casino. With these Vegas-style slots, you’ll have three reels of action. The games typically support between 1 and 5 paylines, making them an affordable option. With traditional sots, there are not too many added features, and the themes are rather basic. You may find games with a wild or a re-spin bonus feature.
  • Video Slots – Thee are the most popular games, and they offer attractive themes, enhanced graphics and bonus features. With video slots, you will be betting on 9 to 100 paylines. Some games also offer ways to win structure, which can offer 243 or 1024 ways to win. The highlights of these games come from the offering of multiple bonus features, including free spins and second screen bonuses.
  • Progressive Slots – These are the top paying games that draw the attention of many players. Progressive games can be either three or five-reel titles. These games will often require a maximum bet to be eligible for jackpot payouts.
  • Random Progressive Slots – Similar to the progressive games, these can offer a payout without a maximum bet. One of the benefits of these games is that you can win a jackpot payout after any spin on the game, no matter what you have wagered. Random progressive games are video slots, and they offer some super themes.

FAQ

Can I play slot games for free?

Yes. At any of our listed best online slots sites for 2021, you can preview a number of titles in a free play mode. While you will not win payouts while playing for free, this is a perfect way to learn how games work and discover the great features that are included.

Should I play progressive slots?

Progressive slot games can offer huge payouts, but your chances of winning are smaller. Most of these games will require a maximum bet, so make sure you have an appropriate budget. If you are looking for frequent wins, stick with standard slots. Progressive games tend to offer lower base game payouts.

Are slots available on mobile devices?

Yes. All of our recommended sites offer a mobile platform. With this, you can enjoy your favorite slot titles on the go and always have a chance at winning. You can also redeem bonuses using your mobile device.

What slots are best to play?

This will depend on your playing preference. Some players prefer the simplicity of a traditional game and others want the bonus features and enhanced technology of video slots. As a new member, try some free games to see which type of game will suit your needs.

Are payouts verified?

The majority of our casino sites that support UK slots are audited on a routine basis. This means that games are tested for fairness and all payout percentages are verified. When choosing slots, watch for games that have the highest RTP.

Do I need to learn strategies to play at the best slots sites?

The great thing about playing slots is that you do not need any special skills or strategies. There is nothing you can do to alter the outcome of the game. This makes slots a perfect choice for beginner gamblers or those that want a casual casino experience.

Top Slots Sites Bonus Offers

Our top slots sites not only provide you access to the greatest games but also feature outstanding bonus offers. As a slot player, you will want to find casino sites that have multiple promotions. These can offer you free funds to play slots and even free spins to enjoy your favourite games.

When you register at our list of the best online slots sites, you will find some great deals available. All you have to do is create an account to start taking advantage of bonus offers. Check out the types of promotions you will find and start playing today.

  • No Deposit Bonuses – These are offered right after you signup for an account. You do not need to make any deposit. The site will credit your account with funds or some free spins, and you can immediately start playing at no risk.
  • Welcome Bonuses – When you make your initial deposit at a top slots site, you will get a match bonus. This is usually for 100%, and the bonus funds can be used to play the supported slot games.
  • Free Spins Bonuses – These can sometimes be part of a welcome package or a standalone bonus. Here, the site will add a number of free spins to your account. Some sites will state specific games that can be played and others will allow you to play any supported slot, with the exception of progressive jackpot games.

With slots bonuses, you can enjoy more games and have more chances of winning. All of the bonuses will have wagering requirements. You will have to meet these before you can withdraw bonus winnings.

Watch the promotions page for new slots bonuses. Many of our sites will offer a free spin promo when new game titles are released. This is a great way to preview a new title and start earning payouts!

Notifications
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Cash Cabin Review 4.5 / 5 Get Up To $900 Bonus
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18+. New players only. Wagering requirements apply. See website for full T&Cs.

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Cyber Bingo Review 4.9 / 5 Get $20 No Deposit Bonus + 60 Free Spins
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18+ BeGambleAware®. New players only. T&C’s Apply. Please Gamble Responsibly. See official website for details.

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18+. New players only. First deposit only. Min deposit & spend £10. Max 30 spins on VALHALLA at 25p per spin. Spins credited upon spend of £10. Full T&Cs apply.

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