Best Slot Sites

The best slot gaming experience can be difficult to come by when you don’t know the right place to look. Our expertise on the matter has helped us review and rank the online slot sites UK players have at their disposal.

This page provides a comprehensive guide to finding the best slot sites and insight into how we arrive at our top picks. We only recommend operators with the best games, bonuses, payment methods and other features. Licensing and security are the top priorities for any top-rated online slot platform.

  • Deposit £10+, Get 50 No Wager Spins on Big Bass Bonanza
    Use Promo Code: BBB50
    Jackie Jackpot Review
    • 1000+ Quality Games
    • Play Games in Demo Mode
    • Fantastic on Mobile
    #ad. 18+. Gamble Responsibly. Begambleaware.org. Significant T&Cs: 18+. New Players Only. Min Deposit £10. Max Bonus 50 Spins on Big Bass Bonanza. Spins expire after 24 hours. No wagering requirements. Promo Code: BBB50. Valid until 31.12.2024. BeGambleAware.org

    Welcome Bonus - 50 No Wagering Spins

    Nothing gets us hotter under the collar here at casinos.win than an opening offer of free spins with no wagering, and that’s exactly what you get with this lovely welcome bonus. Simply use the bonus code BBB50, deposit £10 and spin away. Spins must be played on Big Bass Bonanza. This opening offer is as easy to understand as ABC. There are no wagering requirements because what you win, you win. You’re welcome!

    Terms and Conditions

    • New players only
    • Min deposit £10
    • No wagering
    +
  • Deposit & Wager £25+, Get 75 Free Spins on Bonanza
    Use Code: casino75
    Rhino Casino Review
    • Sportsbook, slots, table games, Slingo and more
    • Great mix of sportsbook and casino offers
    • Simple, easy to use, website
    #ad. 18+. Gamble Responsibly. Begambleaware.org. This promotion is for new customers only. Customers must be 18+. Customers must be residents of the UK/IE. Sign Up using the promo code ‘casino75’ and make a minimum deposit of £25. Wager a minimum £25 on slots and receive 75 free spins on Bonanza.

    Rhino Casino Welcome Bonus

    Casino fans love to hunt down the best welcome bonus deals, so most will be delighted that free spins are all the rage at Rhino Casino. All you need to do to qualify for 75 bonus spins on the Bonanza slot game is deposit and wager £25 when using the bonus code, “Casino75.” As you might suspect, this deal is only open to new players making their first deposit. However, beyond these natural limitations, the Rhino Casino welcome bonus compares favourably to those offered by casinos at the top of the food chain. Winnings accrued from free spins are subject to wagering requirements. However, these demand that bonus funds are only wagered ten times before a payout claim can be made.

    Terms and Conditions

    Some offers require a substantial outlay before you see any benefit. However, this is not the way that Rhino Casino does things. The self-proclaimed “fair and transparent” outfit merely asks that you deposit and play £25 to take advantage of 75 free spins on the Bonanza slot game. That is not to say that Rhino’s welcome bonus is completely free of terms and conditions. The most noteworthy of these include:
    • The welcome bonus is open to UK customers only aged 18+.
    • To claim 75 free spins on Bonanza, players must deposit and wager £25 within 24 hours of sign-up.
    • All free spins expire 7 days after they are issued.
    • Any winnings must be wagered 10x on any slot before a payout can be claimed.
    +
  • Deposit £10+, Get 100% Bonus up to £50 + 100 Spins
    Promo Code: 100SPINS
    Kaiser Slots Casino Review
    • Blue riband provider of slots & table play
    • Paypal & paysafe deposits option
    • Recognised by the UKGC & eCOGRA
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Players Only 18+. Minimum Deposit: £10. Maximum Offer: 100% Bonus up to £50 & 100 Spins on Starburst. Players will be credited with 20 Spins per day, across 5 days. Bonus & Spins winnings must be wagered 35x before withdrawal. Spins expire after 5 days. Promo Code: 100SPINS.

    Kaiser Slots Casino Welcome Bonus

    The Kaiser gives new players a chance to get acquainted with his hospitality by offering up the opportunity to enjoy a £10 casino bonus and 10 free spins on the classic slot, Starburst, just for depositing a tenner. You will find bigger welcome deals in the marketplace, but this deal will be warmly received for occasional players. Players must use the promo code “KAISER” to take advantage when making an initial deposit of £10 or more.

    Terms and Conditions

    Due to the standard nature of the welcome bonus that Kaiser Slots Casino currently advertises, it will not surprise you that standard terms and conditions apply. Rules to look out for include;
    • Wagering requirements of 35x the bonus before a withdrawal is allowed.
    • The expiry of free spins within 24 hours of being claimed.
    • And that the offer is only open to players in the U.K. who are aged 18+.
    • The offer is open to first-time depositors who use the promo code: KAISER.
    • Wagering must be completed within 21 days, or the bonus funds will be forfeited.
    +
  • Deposit £10+, Get 100% up to £150 Bonus + 25 Spins
    Fantastic Spins Casino Review
    • Great slots
    • Popular payment methods
    • Low deposit and withdrawal amounts
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New players & 1st deposit only. Min deposit £10 with code WOW150. Deposit matched Games Bonus [“GB”] is 100% up to £150 + 25 Free Spins [“FS”]. FS must be claimed by 23:59 on day they are received and are valid for 3 days. FS valued at £0.10 per spin. FS can be used selected games only. Winnings from FS granted in Games Bonus [GB]. All GB funds must be wagered x35 before it can be cashed-out up to a value of £100. 18+. Full T&Cs apply.

    Welcome Bonus - 100% Bonus up to £150 Plus 25 Free Spins

    This fantastic opening offer is available to new players in the UK and comes with lower-than-average wagering requirements. All you need to do is deposit anywhere between £10 and £150, and the casino will match it. When first depositing, you will need to use the bonus code WOW150. Then, all you have to do is wager through your deposit and enjoy your bonus cash. The bonus amount must be wagered x35 before you can withdraw any winnings. In an industry where x40 is the average, this represents good value. Any wins from free spins will also need to be wagered x35 before you can withdraw. There is a cap on winnings of £100 plus your winnings from free spins, but overall, this is a very good opening offer.

    Terms & Conditions

    • New players only
    • Min Deposit £10
    • Promo Code WOW150
    • X35 wagering requirement
    • Cap on bonus winnings of £100
    +
  • Deposit & stake £10+, Get 100 free spins on Big Catch Bass Fishing
    The Pools Casino Review
    • Claimable on your first-time deposit
    • No cap on free spin winnings
    • FS winnings are wager-free
    #ad. 18+. Gamble Responsibly. Begambleaware.org. 18+, UK only. New customers only. Full T&Cs apply.

    Welcome Bonus - 100 Free Spins No Wagering

    The Pools offers new players a very tempting 100 free spins when they sign up via this limited offer. And it couldn’t be simpler to understand. All you have to do is sign up, deposit and spend £10 on casino slots and the next day your free spins on Big Catch Bass Fishing will be waiting for you. This opening offer is low risk because there’s no wagering requirement on wins from free spins! What you win, you keep. And the cherry on top is that, unlike other casinos, there’s no upper cap on what you can win. This is a very good opening offer, but it’s time limited, so you’ll need to jump on it now.
    Terms & Conditions 
    • New UK players only
    • Free spin value £0.10
    • Spins must be played on Big Catch Bass Fishing
    • No wagering
    • Seven day expiry
    +
  • Deposit £20+, Get 100% up to £150 + 50 Free Spins on Big Bass Bonanza
    Use Promo Code: BONANZA100
    Jackie Jackpot Review
    • 1000+ Quality Games
    • Play Games in Demo Mode
    • Fantastic on Mobile
    #ad. 18+. Gamble Responsibly. Begambleaware.org. Significant T&Cs: 18+. New Players Only. Min Deposit £20. Max Bonus £150 +50 Spins on Big Bass Bonanza. Spins expire after 24 hours. Wagering requirements apply 25x. Promo Code Bonanza100. Valid until 21.12.2024. BeGambleAware.org

    Welcome Bonus - 100% Bonus up to £150 plus 50 Free Spins

    This tasty opening offer comes with lower than average wagering and free spins! What more could you ask for? Jackie Jackpots looks to attract new players in the UK with a 100% matched deposit bonus up to £150 plus 50 free spins on Big Bass Bonanza. Simply, sign up using the promotional code BONANZA100 and deposit anywhere between £20 and £150 and Jackie will match it. You will need to wager any wins from free spins and your bonus x35 before you can withdraw any winnings. But in an industry where x40 is the average, this is good value. For example, if you deposit £20 and get £20 free, then your wager needs to be £700 to be able to cash out.

    Terms and Conditions

    • New players only
    • Min deposit £20
    • X35 wagering bonus and free spin wins
    • Games contribute differently to wagering requirements - check before you spin
    +
  • Deposit £20-£25, Get 100% Bonus + 25 Spins
    Greenplay Casino Review
    • Mega Moolah progressive jackpots
    • More than 900 games
    • Slots, table games and live dealer
    #ad. 18+. Gamble Responsibly. Begambleaware.org. Terms and Conditions apply. 18+. New Players Only. Min Deposit: £20. Max Bonus: £125 + 25 Spins. Spins expire after 24 hours. Wagering requirements apply 35x.

    Welcome Bonus - 100% Matched Deposit up to £25 plus 25 Free Spins

    Your friends will be green with envy when they hear you've bagged this opening offer. Greenplay's opening salvo to attract new players is a lovely £25 matched deposit plus 25 free spins. Why is it so attractive? It comes with a wagering requirement for the bonus of just x35! In an industry where the average is x40, that's good value. In other words, if you deposit £20 and get £20 free, you will need to wager and win £700 to cash out. Your 25 free spins will be available on select games, and you'll also need to wager any wins on these x35. This mix of matched deposit and free spins make this a very nice opening offer.

    Terms & Conditions

    • New players only
    • Minimum £20 deposit
    • X35 wagering of bonus
    • Free spin expiry is one day
    • Max cap on wins from free spins of £100
    • X35 wagering on free spin wins
    • Free spins on select games
    +
  • Deposit £20+, Get 100% up to £100 + 100 Spins on Big Bass Bonanza
    BZeebet Review
    • A phenomenal range of sports and casino games
    • Great payment methods
    • Quality customer care
    #ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New Players Only. Min Deposit £20. Max Bonus: £100. 100 Spins on 1st deposit. Spins Wins and Bonus Wagering Req. X35. Spins Expire after 24h.

    Welcome Bonus - 100% Matched Deposit up to £100 PLUS 100 Free Spins

    BzeeBet offers new customers in the UK a choice of sign-up offers for either sports or casino. Sports fans can choose a “bet £10 to get a £10 free bet” opening offer. Casino fans can plump for a 100% matched deposit offer up to £100 plus 100 free spins. Your free spins must be played on Big Bass Bonanza and, just like Cinderella, will expire at midnight the day you receive them. So play them quickly! You will need to wager/play through the deposit amount and bonus x35 before you can withdraw any winnings. Any wins from free spins will also need to be wagered x35 before you can revel in a spot of profit. The minimum deposit to redeem this offer is £20.
    +
  • Deposit £10+, Get 100% Up to £50 Bonus + 20 Spins on Book of Dead
    Peachy Games Review
    • Brilliant Bingo
    • Quality Progressive Jackpots
    • Great Payment Methods
    #ad. 18+. Gamble Responsibly. Begambleaware.org. " New Players Only, Minimum £10 Deposit and Wager, Free Spins on Book of Dead, x40 Wagering Requirement, Max Cash Out £250, 30 Day Expiry, Bonus Spins Two Day Expiry "

    Welcome Bonus - 100% Matched Deposit Bonus up to £50 Plus 20 Free Spins

    This fruity opening offer promises plenty of punch when joining Peachy Casino. New players can enjoy a 100% matched deposit bonus of up to £50 plus 20 free spins. The minimum deposit to redeem this offer is £10, and you will need to wager your deposit first. Wins from free spins and the bonus have a wagering requirement, or play-through, of x40. In other words, if you deposit £50 and receive a bonus of £50, you will need to play through and win in excess of £2,000 before you can withdraw any winnings. A x40 wagering requirement is bang on the average button when it comes to online casino offers. However, there is also a cap on winnings of £250 for both the bonus and free spins. On the plus side, Bingo counts x10 to your wagering requirement. In other words, if you played exclusively on bingo games with your bonus, the wagering requirement is reduced to just x4.

    Terms & Conditions

    • New Players Only
    • Minimum £10 Deposit and Wager
    • Free Spins on Book of Dead
    • x40 Wagering Requirement
    • Max Cash Out £250
    • 30 Day Expiry
    • Bonus Spins Two Day Expiry
    +
  • Deposit & Spend £10+, Get £20 Bonus & 30 Free Spins
    Gala Spins Review
    • Great Bonuses
    • Nice Welcome Offer
    • Good Game Selection
    #ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New customers only. Min deposit & spend £10 to get £20 bonus (40x wagering, selected games). 30 Free Spins (value £0.10 each, selected games). Bonus & Free Spins valid for 7 days. Payment restrictions & T&Cs apply.
    Players in the UK are treated to a special Gala welcome gift of £20 plus 30 free spins when they join. Best of all, you won't need a degree in mathematics to understand this opening offer. It's as simple as they come. Simply deposit and play through £10 on any slot and receive your bonus cash. You'll then need to wager and win 40x the bonus amount to withdraw your winnings. In other words, you will need to play through your bonus amount to the tune of £800 before being able to withdraw. There's a list of select games to choose from when you play. Free spins must be played on the slot Starburst, but on the flip side, they come with no wagering requirements. Deposits via Envoy, Neteller, PayPal, Apple Pay, MoneyBookers, Paysafe or Skrill are not eligible. A 40x wagering requirement is pretty much bang on the nose when it comes to casino offers, so discount this opening offer at your cost.
    +
  • Deposit £1+, Get 80 Chances To Win The Mega Moolah Jackpot
    Zodiac Casino Review
    • 80 Spins on Mega Moolah slot
    • Part of the Casino Rewards Group
    • Great Progressive Jackpots
    #ad. 18+. Gamble Responsibly. Begambleaware.org. Welcome Offer is for New Customers Only. The 80 chances are credited as £20 welcome bonus and players can spin 80 times at £0.25 on the Mega Moolah progressive slot game. The minimum first deposit required is £1, for all subsequent deposits the minimum deposit is £10. A two hundred times wagering requirement applies on all bonuses and certain games contribute a different percentage to the wagering requirement

    Zodiac Casino Welcome Bonus – 80 Chance to Win for just £1

    New players at Zodiac Casino have 80 chances to be an instant millionaire for just £1. Once you’ve signed up, your initial £1 deposit will give you 80 spins on the progressive slot – Mega Moolah. The 80 chances are credited as a £20 welcome bonus and players can spin 80 times at £0.25. But that’s not all! A further four deposits could see you enjoy a matched deposit offer of up to £480. The minimum deposit to redeem these matched deposit bonuses is £10. Here’s how it works:
    • First Deposit – 80 Spins on Mega Money for £1
    • Second deposit – 100% Match Bonus up to £100
    • Third deposit – 50% Match Bonus up to £80
    • Fourth deposit – 50% Match Bonus up to £150
    • Fifth deposit – 50% Match Bonus up to £150
    Sounds good, doesn’t it ? But there’s a big but coming. But you will need to wager/play through your deposit bonuses 200x before they can be converted to withdrawable cash. In other words, if you deposit £100 on your second deposit, you will need to win and wager £20,000 before you can take out any winnings. In an industry where 40x is a good average, this is steep, to say the least.

    Terms and Conditions

    • New players only
    • Seven-day expiry
    • All deposit bonuses have a 200x wagering
    • The 80 chances are credited as a £20 welcome bonus and players can spin 80 times at £0.25 on Mega Moolah
    • Only Slots and Parlor Games contribute 100% to wagering requirements
    +
  • Deposit £20+, Get 100% Casino Bonus up to £200
    Fafabet Casino Review
    • Brilliant bonuses
    • Fantastic gameplay
    • Sportsbook and Casino
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New players only, X35 wagering on bonus, 7 Day expiry, Minimum deposit £20, Winnings capped at £250

    Welcome Bonus - 100% Casino Bonus up to £200

    Fafabet welcomes new players in the UK with a fantastic casino matched deposit bonus of up to £200. This new player reward is as simple to understand as a walk in the park. Deposit anywhere between £20 and £200, and the company will match it. You then need to wager through your bonus x35 before you can withdraw any winnings. Alternatively, because this casino is also a sportsbook, you can choose from a £50 cashback on your first day of losses plus a £20 casino bonus. But choose wisely; you’ll only get one.

    Terms & Conditions

    • New players only
    • X35 wagering on bonus
    • 7 Day expiry
    • Minimum deposit £20
    • Winnings capped at £250
    +
  • Deposit £5, Get £25 Slot Bonus
    Captain Cooks Casino Review
    • Plenty to Entertain and Enjoy
    • Great slots by Microgaming
    • Points make Prizes at this Casino Rewards Casino
    #ad. 18+. Gamble Responsibly. Begambleaware.org. Welcome Offer Is For New Customers Only. The Minimum First Deposit Required Is £5, For All Subsequent Deposits The Minimum Deposit Is £10. The 100 Chances Are Credited As A £25 Bonus And Players Can Wager 100 Times At £0.25 On The Mega Moolah Slot Machines. A Two Hundred Times Wagering Requirement Applies On All Bonuses And Certain Games Contribute A Different Percentage To The Wagering Requirement. See Full Terms And Conditions Here.

    Captain Cooks Welcome Bonus – 100 Chances to Become a Millionaire for just £5

    If a nautical-themed online casino floats your boat then Captain Cooks Casino could be right up your mast! Named after the explorer who first charted New Zealand back in the 18th Century this online casino has been around a long time. So, is it still as fresh as a newly launched frigate or does it have barnacles on its hull. It certainly says “all aboard everyone is welcome” with an interesting sign up offer. On your first deposit of just £5, you’ll receive 100 chances to win big on the progressive Jackpot Mega Moolah. The 100 chances are credited as a £25 welcome bonus and can be wagered 100 times at £0.025 on the Mega Moolah slot. But that’s not all! There are also four matched deposit bonuses after that. Here’s how it works:
    • First Deposit – Deposit £5 Get 100 Chances to Become a Millionaire on Mega Moolah
    • Second Deposit – 100% Matched Deposit Bonus up to £100
    • Third Deposit – 50% Matched Deposit Bonus up to £150
    • Fourth Deposit – 25% Matched Bonus up to £125
    • Fifth Deposit – 100% Matched Deposit Bonus up to £100
    That’s a whopping £475 in matched bonuses if you match the maximum. There are a couple of things you need to know first before you start spinning. The minimum deposit – after the first £5 offer – is £10. However, and this is a big however, all deposit bonuses will need to be wagered 200x before you can withdraw any winnings. In an industry where 40x wagering is considered average that’s a big ask!

    Terms and Conditions

    • New Players Only
    • 200x wagering all matched deposit bonuses
    • Minimum deposit £10 after initial £5 deposit
    • The 100 chances are credited as a £25 welcome bonus and players can spin 100 times at £0.25 on Mega Moolah
    • Only Slots and Parlor Games count 100% towards wagering requirements
    +
  • Deposit £10+, Get 150% up to £50 Bonus + 25 Free Spins
    Cherry Wins Casino Review
    • Slots provided by Magnet Gaming
    • 90-ball and five line available
    • Known for large welcome bonuses
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New players only. Valid until further notice. Min dep £10. 150% games bonus [GB] max £50 + 25 Free Spins [FS] on selected games (FS valid for 3 days respectively; Max win cap 0.25p). FS wins granted in Games Bonus [GB] & valid on selected games only. WR: 35x (Games Bonus); 35x FS wins. GB wins cap: £100 + initial bonus. UK: deposit balance can be withdrawn at any time. Country restrictions apply. 18+. Full T&C apply. Full T&C apply.

    Cherry Wins Welcome Bonus – 150% Bonus + Free Spins

    Be still my beating heart! Cherry Wins offers a heart-thumping opening offer of a 150% matched deposit up to £50 PLUS 25 Free Spins. It’s a pretty low entry as well, with just £10 needed to be deposited to trigger the bonus offer. Both the bonus and free spins come with a 35x wagering requirement which is slightly below the industry average of 40x. Winnings for the bonus are capped at £100 plus the initial bonus. But these aren’t the only terms and conditions involved, and even though we’ve summarised them below, we’d always recommend checking them out on the host website to make sure nothing has changed since we reviewed the casino.

    Terms and Conditions

    • New Players Only
    • Free Spins are valid for three days
    • No Win Cap on Free Spins
    • 35x wagering requirement for bonus money and free spins
    • Matched deposit win cap is £100 plus the initial deposit
    +
  • Deposit & Play £10, Get £20 Bonus + 30 Free Spins
    Gala Casino Review
    • Great Ongoing Bonus
    • Respected Opening Offer
    • Game Shows Galore
    #ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New customers only. Spend £10, get £20 bonus (40x wagering, selected games) + 30 Free Spins (value £0.10 each, selected games). Bonus & Free Spins valid for 7 days. Restrictions and T&Cs apply.

    Gala Casino Welcome Bonus – £40 Bonus plus 50 Free Spins

    You can join the gang at Gala Casino with a lovely welcome offer of £40 plus 50 free spins. And best of all, it’s pretty straightforward. You simply need to deposit £20 and play through that amount on any game. Then, simply claim your bonus in the “Promotions” tab. Your £40 bonus will need to be wagered 40x times before you can withdraw any winnings. In other words, you will need to play and win £1,600 before you turn any profit from this opening offer. Only slots, jackpot slots and scratch cards contribute 100% to wagering requirements. The brilliant news is that any wins from free spins do not have a wagering requirement – what you win, you win. Free spins are available on Big Bass Bonanza. Deposits made via Neteller, PayPal, Paysafe, Skrill or via any pre-payment card will not qualify for this Welcome Bonus. This is a really nice opening offer. It’s as clean as a whistle and comes with lower-than-average wagering requirements for a sign-up offer.

    Terms and Conditions

    • 18+ years
    • New customers only
    • Deposit and spend £20, get £40 bonus +50 Free Spins
    • Valid on selected games
    • 40x wagering on bonus
    • 0x wagering on Free Spins winnings
    • Seven days to claim and wager
    +
  • Deposit £10+, Get 121% Welcome Bonus Up to £100
    21 Casino Review
    • A slot paradise of variety and quality
    • Royalty loyalty scheme
    • Regular promotions for players
    #ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New players only. Min deposit £10. Bonus funds are 121% up to £100. Bonus funds are separate to cash funds and subject to 35x wagering requirement. Only bonus funds count towards wagering contribution. £5 bonus max bet. Bonus funds must be used within 30 days, spins within 10 days. Affordability checks apply. Terms Apply. BeGambleAware.org

    21 Casino Welcome Bonus – 121% Matched Deposit up to £100

    New customers at 21 Casino can enjoy a lovely 121% matched deposit bonus when joining up to £100. This is a lovely opening offer. It’s not as big as some out there, but all that glitters isn’t always golden. Many big opening offers require the bonus and deposit to be wagered a certain number of times. At 21 Casino, you will just need to wager the bonus money 35x before you withdraw. In an industry where the average is 40x, that represents good value. Plus, you don’t need tonnes of cash! The minimum deposit to redeem this offer is just £10. As always, with opening offers, there are some terms and conditions you will need to abide by. We’ve listed the main ones below, but it’s always worthwhile taking the time to read them yourself.

    Terms and Conditions

    • New Players Only, 18+
    • Bonus funds must be wagered 35x
    • Games contribute differently to wagering contributions; check before playing
    +
  • Deposit £10+, Get £40 Bonus + 50 Free Spins
    Mecca Games Casino Review
    • Bingo provider with new casino venture
    • 200 top slots to take on!
    • Approved by the UKGC as safe and fair
    #ad. 18+. Gamble Responsibly. Begambleaware.org. Min dep £10. Claim once. Bonus on Premier Collection only. 30x WR on bonus. 5x MCR. 50 free spins and winnings playable on Fishin Frenzy only. 10x WR on free spins. 5x MCR. T&Cs apply.

    Mecca Games Welcome Bonus – Deposit £10 Get £40 Bonus Plus 50 Free Spins

    We do love an upgrade at casinos.win, and this opening offer is certainly just that! Mecca isn’t mucking around with a matched deposit offer. Instead, they’ve gone big with a fantastic deposit £10, get £40. You simply register, head to the cashier section and select the welcome offer, then deposit £10 and enjoy £40 on their Premium Collection of games. Free spins are playable on Fishin Frenzy. There are, however, a couple of “buts” that come with this offer. It’s a great offer, but you will need to wager the deposit and bonus 30x before withdrawing any winnings. It’s a good offer, but winnings have been capped at 5x. The free spins are great, but they come with a 10x wagering requirement on any winnings. In fairness, nearly all casino welcome offers come with terms and conditions, and it’s not uncommon to see them at 40x and above. That means, in terms of competition, this is a lively offer with potential.

    Terms and Conditions

    • Minimum deposit £10
    • Claim once
    • Bonus on Premier Collection only
    • 30x wagering requirement on bonus
    • Maximum win on free spins and bonus deposit is 5x
    •  50 free spins and winnings playable on Fishin Frenzy only
    • 10x wagering on free spins
    +
  • Deposit £10+, Get 100% up to £100 Bonus + 3 Mystery Gifts
    Genie Riches Casino Review
    • Owned by the Broadway Gaming Group
    • Wishes granted with magical bonuses
    • 1000+ games to investigate
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New players only. Valid until further notice. Min dep £10. 100% Games Bonus[GB] up to £100 + 3-wheel spins. Wheels prizes and odds vary & include multiple prizes. Free Spins [FS] wins granted in GB. GB valid on selected games only. WR: 35x on winnings generated from [FS]; WR: 35x on your (Games Bonus). WR vary by game. GB wins cap: £100 + initial bonus. Country restrictions apply. UK: deposit balance can be withdrawn at any time. 18+. Full T&C apply.

    Genie Riches Welcome Bonus

    Three is always the magic number where Genies are concerned, so the makeup of the Genie Riches Casino welcome bonus might not come as a surprise. New players on the Genie Riches operation, who make an initial deposit of £10, can qualify for a 100% deposit bonus up to £100 using the code FIVE. They can also benefit from three mystery gifts. These extras are decided at random and can include 25 free spins on Gonzo’s Quest, Starburst, Twin Spin, or Jumanji. As with all welcome bonuses, the true value of the reward is only revealed once the terms and conditions are investigated. In this case, players should know that bonuses should be wagered 50x before a payout request can be made and that this figure rises to 85x for free spin wins.

    Terms and Conditions

    The first thing you may notice when reading the terms and conditions of this reward is the £100 cap that has been placed on profits. A limit on wins is always disappointing, but a £100 bankroll boost is still very much worth picking up. Other rules to look out for include:
    • The bonus and 3 spins on the prize wheel are open to new players 18+
    • To qualify, players must deposit a minimum of £10
    • The prize wheel gives players a chance to win 25 free spins on either the Gonzo’s Quest, Starburst, Twin Spin, or Jumanji slot games
    • Winnings from free spins must be wagered 85x, and winnings from the deposit bonus must be wagered 50x before withdrawing.
    +
  • Deposit £15+, Get 50% up to £100 Bonus + 50 Free Spins
    Enter WELCOME10 bonus code upon deposit
    10 Bet Casino Review
    • Bursting with bonuses
    • More than 1,000 quality games
    • Superb sportsbook and live casino
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers only; Enter WELCOME10 bonus code upon deposit (no Skrill/Neteller); Wager bonus 40x within 15 days; Max winnings = £500; Free spins validity: 15 days; Free spins max. winnings = £100. Stake contribution per eligible games; See full terms; Terms apply; 18+

    10 Bet Casino Welcome Bonus

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    What an opening offer! You’d have to be mad not to read on to find out more about MadSlots’ Welcome Bonus because it is a phenomenal 300 free spins plus a matched deposit bonus of up to £200. Best of all, your first 100 free spins require no deposit whatsoever. The rest plays out across your first three deposits. Here’s how:
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    • Deposit 1 - Deposit anywhere between £10 and £200 to have your deposit 100% matched
    • Deposit 2 - Deposit £10 and receive 100 free spins on Big Bass Splash
    • Deposit 3 - Make up your own offer. For every £1 you deposit, you will receive one free spin on Rich Wilde and the Book of Dead slot up to a maximum of 100 free spins.
    Bonuses and free spin wins have a relatively low wagering requirement of x35. The average for new casino sign-up offers is typically x40. The maximum win to be transferred to the cash balance after completing the wagering requirements for either bonus or free spins is £500 for the welcome pack offers, £100 for deposit offers and £50 for all no-deposit offers.

    Terms & Conditions

    • New players only
    • Seven-day expiry
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    • Max win varies depending on whether it is a deposit or no-deposit offer
    • X35 wagering bonus and free spin wins
    • £5 max stake
    +

Author:

Anne Ifeanyi

Last Updated:

22/12/2023

Table of Contents

How We Choose the Best Slot Sites

Some online slot sites offer a great experience for players. Others, less so. There are so many different sites on the market, and you can’t tell the difference at face value. Usually, novice players will have to jump ship multiple times and have many bad experiences before finding a good casino that’s worth their time. As experts, we have a secret recipe for assessing the best online sites. For any site we recommend, we perform several inquiries. Only those that pass are quality slot sites, and the absolute best slot sites will be a cut above the rest.

Is the site licensed?

There’s no way to over-stress the importance of licensing for online casinos. Unlicensed and unregulated online slot sites are often blacklisted for their lack of compliance and proper regulation. They are not safe, and you have no guarantee of security for your personal details and money. That is why our first step is to check if there’s a licensing certificate displayed at the site’s footer.

The reputation of the licensing body is also vital. UK-licensed sites are the best picks. Licences from Alderney, the MGA, Kahnawake and the like are also highly recognized. A Curacao licence, for instance, is weaker and will prompt closer scrutiny of the site.

What security protocols are in place?

Security protocols are crucial for any operator that aims to provide a safe gambling environment. SSL encryption is the standard safeguard against hacking and unauthorised access to your details on the website server. Other safeguards we’re happy to see include protocols for anti-fraud and money laundering activities.

Is there a good variety of quality slots?

The best slots sites should have plenty of quality slots for players to wager on. Slots are the most diverse game category, and any top site should showcase this diversity in the selection of games. We look for a good mix of classics, video slots and jackpot titles. The larger the library, the better. We go for quality over quantity any day, but there’s an insane amount of online slots on the market, so there’s no reason for the best sites not to have a sizeable catalogue.

What software providers power the library?

The software providers behind the games are also pivotal to our rankings. This is because the game developers featured can easily tell us the quality of gameplay to expect. Some of the top providers who hardly disappoint are NetEnt, Pragmatic Play, Microgaming, Playtech, Big Time Gaming, etc.

Their games often have high payout rates, exciting features and compelling graphics, and they maintain a regular release schedule. They’re also quite innovative. NetEnt invented the avalanche reels with the release of Gonzo’s Quest; Microgaming has the largest progressive jackpot slot ever made, Mega Moolah, and Big Time Gaming are behind the Megaways mechanic, a revolutionary slot engine.

Are there other casino games?

The focus of a slot site should be slots, but offering other casino games shows the operator’s drive to provide players with the best value. Frankly, it’s hard to get bored with the variety of slots the best sites offer, but it’s good to know that you can take a break from spinning the reels and bet on a hand of blackjack or take your chance with Red/Black bets at roulette whenever you wish.

Several of the top slot sites we recommend are also bingo sites where UK players can join bubbling online community chat rooms and access different variants of 90-ball, 75-ball and 80-ball bingo.

Are there free spins bonuses?

Free spin offers at a slot site are like bread and butter. They are the best slot bonuses, allowing you to spin your favourite titles at the operator’s expense. There should be free spins for new players. Existing customers should also have plenty of similar incentives. The best sites will not just aim to attract players with exciting offers but also retain customers with valuable offers on a regular basis.

How fair are the wagering requirements?

Wagering requirements are the dreaded aspect of online slot bonuses for many players. However, they’re not inherently disadvantageous. Fair wagering requirements that are easy to play through will make bonus claiming a walk in the park. We determine how valuable a bonus is based on the wagering requirement and other terms and conditions. So we check this requirement and rate sites accordingly. Reasonable wagering at slot sites is about 20x – 30x. Bonuses with higher wagering should be considered with a pinch of salt.

How fast are payouts?

A major pitfall of many online platforms is slow payouts. By default, deposits are instant. On the other hand, withdrawals are a constant headache, and many real-player reviews about mediocre sites complain of delayed or withheld payouts. So an easy way to stand out as the best site is to enable easy and fast payouts.

Withdrawals are rarely as immediate as deposits, but they can be as quick as 24 hours. We also take into consideration the diversity and quality of payment options. PayPal slot sites are among the fastest payout options. Neteller and Skrill are also secure and efficient e-wallet options. Paysafecard and PayByPhone are some other popular payment channels for gambling in the UK.

Is the customer service reliable?

Many players disregard the importance of customer service until they’re in need of support and are unable to get the relevant assistance. The quality of customer service is often a good indicator of how much the operator values its players and how invested they are in ensuring customers get the best experience.

Poor slot sites provide the bare minimum in terms of customer support, while the best sites, like those on our list, provide reliable support with knowledgeable and friendly representatives that are available round the clock via multiple contact channels (live chat, email, telephone, social media). Several sites will also curate a detailed and comprehensive FAQ section covering players’ most common questions regarding the site.

What’s the quality of the mobile site?

Mobile gaming is all the rave right now, and this isn’t a trend that looks to be dying off anytime soon. The benefits of mobile gaming are clear – increased convenience, easier accessibility, and better graphics. So it’s imperative that operators have a mobile slot site offering nowadays, and luckily most do. However, the quality of the user interface and the ease of navigation may sometimes fall short. Some mobile sites are just barely strung together for the sake of it, while others are well-thought-out with an overall quality design and usability. The latter is the better kind, and all the slot sites that we feature provide stellar mobile sites or apps or both.

Why Trust Our Recommendations

casinos.win is dedicated to providing casino players with the most reliable online casino information. Our thorough assessment process, as highlighted above, is a tested and proven method of fishing out the best online gaming platforms.

We apply the same criteria across all sites we review, so we take an unbiased approach. And we don’t promote a site as being what it’s not just for affiliate purposes. Our detailed reviews on each site will reveal both the pros and cons, and we deliver our verdict after weighing the good and the bad on a scale.

Why Play at Online Slots Sites

There are numerous benefits to playing at online slot sites. The most obvious one is that online gaming is more convenient than driving to a physical casino establishment, and with mobile slot platforms, you can play on the go, anywhere and anytime. Online slot sites are also many and varied, meaning you have plenty of choice, and you can join multiple sites freely.

There’s also the fact that online sites hold an enormous amount of slot games, more than you can ever hope to find at land-based locations. There’s exceptional choice and variety and some of the most innovative game features. Another advantage of online slots is that they come with better RTPs. The average for online slots is 96%, while land-based slot machines are usually below 93%. This superior RTP means that you stand a chance to get more profitable returns on your bets.

The biggest advantage of playing at online slots sites is the presence of bonuses, lots and lots of them. From no deposit bonuses to deposit matches and free spins, these offers will boost any gaming experience. At the best slot sites, there are bonus deals for new players as well as existing customers.

How to Play at the Best Slot Sites

It’s pretty easy to get started at the best slot sites. We’re breaking down the process into three steps.

Begin by registering

All the best UK slot sites require players to register before enjoying any of the site’s features. You’ll need to complete a simple sign-up form. The process is quick and straightforward, and there are prompts to guide you through.

UK-licensed slot sites are required to carry out KYC verification on all registered players. So you’ll need to provide proof of identity and address. Usually, your passport or government-approved ID card and a bank statement or utility bill will suffice.

Make your first deposit

Unless you’re playing at a no deposit slot site, you must make a deposit before you begin. The minimum first deposit at the best slot sites is often quite accommodating. You can usually make a £10 deposit, £5 deposit or £1 deposit.

The trend of low deposit sites is on the rise, so you can begin your gaming experience with just a bit of spare change in your pockets. The minimum deposit is not always the same as the qualifying deposit for bonus claiming. If you wish to claim a bonus, ensure you check the qualifying deposit for the offer before you fund your account.

Claim bonus free spins

Online slot bonuses are optional, but there’s really no reason why you shouldn’t claim one unless it’s got absolutely awful wagering requirements. Fortunately, reasonable bonus wagering is one of the criteria for the best slot sites.

Free spins bonuses will boost your slot gameplay and increase your chances of winning. Slots are games of chance, and any single random bet could be the lucky one that pays out a big win or a jackpot. So each free spin is one more chance to win.

Free spins are the most prominent slot bonus because they are designed specifically for these games, but you could just as well benefit from a cash bonus. You can use both to play online slots for free.

Best Slot Sites for Winning

Sites with the highest RTP slots are your best chance at winning, theoretically. You should be looking for games with a 96% RTP at the least, and the higher the payout rate, the better. Some of the best-paying slots include Gonzo’s Quest, Blood Suckers and White Rabbit Megaways.

The biggest win at online slot sites is often from progressive jackpot slots, though. These can pay life-changing sums worth millions, but they come with lower RTPs, around the 93% mark. The low payout rate is the tradeoff that comes with the chance to win such large amounts. So it’s up to you to choose whether to play for a progressive jackpot or go for regular wins. The highest-paying slots can offer 50,000x your stake or more.

Best Slot Sites for Bonuses

Bonuses are the most attractive aspect of online slot sites. Rather than games and other offerings, bonuses are often the biggest incentive to play at a new site. The bonus amount is important because the larger the bonus, the better, but the true worth of a bonus is actually in the small print.

The wagering requirement is the bonus rule you’ll want to look for immediately. A high wagering requirement is a red flag, indicating that the bonus is not as generous as it looks. On the other hand, low wagering is excellent, and you’re more likely to profit from your bonus. Some sites like PlayOjo waive this rule entirely and offer no wagering bonuses.

You can also take your bets to no deposit slot sites, where you can claim bonus deals for free without making any deposit.

Best Slot Sites FAQs

Which slot site has the best games?

The best games are from top slot developers. You’ll be looking for a slot providers list that includes the likes of NetEnt, Microgaming, and Pragmatic Play. The best slot sites will cover slots and diversify with table games, live dealers and other options.

Can I play at online slot sites for free?

Most slot sites in the UK are real money platforms where you must make a deposit before playing. However, you may get the chance to play free slots in demo mode at some sites. Others will offer no deposit bonuses that allow you to play for free and still win real money.

Do I have to download mobile apps for the best slots sites?

Some of the best slot sites have an app. Others don’t. Mobile apps allow you to enjoy convenient gaming on the go, but a top-quality mobile site will be just as seamless and optimised.

How do free spins bonuses work at slot sites?

Free spins are a slot-specific bonus that rewards players with a number of bonus spins at the operator’s expense. For instance, you may get 50 free spins to play Starburst or on a group of selected slots. You may receive deposit free spins or no deposit free spins

Can I claim other bonuses besides free spins?

Yes, you can. Although free spins are the go-to slots bonus, you’ll find no deposit bonuses, match offers, VIP rewards and more.

Are online slot games rigged?

Fair play is part of the security features at most licensed slot sites and guarantees that online slot games are not manipulated. The best sites have their game RNGs tested by independent auditors like eCOGRA, iTech Labs, and BMMTestlabs.