The Best Online Slot Sites | Play Top UK Slots 2024

James Briscoe

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James Briscoe

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Lee James Gwilliam

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Lee James Gwilliam

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Last Updated on 15th April 2024, 02:57 PM

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We compare, rate, and share the best slot sites in the UK on this page, helping you rediscover classic slots or try your hand at progressive jackpot slots with huge prizes. Check out the best UK slot sites and claim exclusive slot bonuses below.

There's no doubt it's a crowded market out there, so you want to know you're playing in the right place. A site with a great selection of slot games, generous promos, fast withdrawals - all things you and I'd expect from any casino worth recommending. On that note, let's take a look at the best UK slot sites I've found right now. 

My Pick of the Best Slot Sites in the UK for April 2024

Slot SiteWhat I Loved
Mr Vegas🌟 170 different slot developers in the lobby
PriveWin󠀥💯 Payout percentages revealed for every slot
All British💸 Cashback whenever you lose on slots
QuinnCasino💰 Daily and weekly promos on slot games
Kwiff🎁 Free spins gifted on the regular

 

It goes without saying that casino sites each have their own strengths, so I've tried to cover all the top priorities with my recommendations here. Those who like their slot game lobbies well-stacked are best heading to Mr Vegas in my view, where you'll find quite literally thousands of games. Meanwhile, ongoing promos at All British, Kwiff and QuinnCasino make these three sites an excellent pick if you're looking for a site to stick around at. I round off my top five for now with Privewin, who earn props for me for making the payout percentages on each game as clear as day. 

These are but a snapshot of the best slot casinos in the UK right now, and the truth is, there's plenty of quality sites to play at. You can find active promos for a whole host of them below, with every site we list having been rigorously tried and tested by our expert reviewers. From game selection to bonuses, customer service, payment speeds, and mobile compatibility, I'd only ever recommend a site to you provided it delivered in all areas. So which do? Let's take a look.

More Top Slot Sites in the UK Right Now:

Affiliate disclosure: At Casinos.com, we want to ensure that players are matched with the right casino and sportsbook offers for them. For this reason, some of the recommended site links are affiliate links. This means that if you visit a website through our link and make a deposit, Casinos.com will receive a commission payment at no extra cost to you.
  1. 1
    Mr Vegas Bonus 100% Welcome Bonus Up To £200 + 11 Wager Free Bonus Spins
    All Casino Games 7080 Slots 5586 Live Games 619 Minimum Deposit to Qualify £10.00 Payment providers VISA MasterCard PayPal Trustly Wager Requirement 35x Maximum Bonus £200.00 % Match 100%
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. The Welcome Bonus is only available to newly registered players who make a minimum initial deposit of € 10.
  2. 2
    PriveWin Bonus 100% Welcome Bonus up to £100 + 20 Extra Spins
    All Casino Games 1023 Slots 973 Live Games 9 Free Spins icon-yes Payment providers VISA Neosurf Paysafecard MuchBetter Maximum Bonus £100.00 Value per Free Spin £0.10 Wagering Multiplier 50x
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Wager from real balance first. 50X wager the bonus. Contribution varies per game. Selected games only. Wager calculated on bonus bets only. Bonus valid 30 days / Extra spins valid 7 days from receipt. Max conversion: 3x the bonus amount or from extra spins: £20. Withdrawal requests voids all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply
  3. 3
    All British Bonus 100% Welcome Bonus up to £100 + 10% Cashback
    All Casino Games 1293 Slots 1176 Live Games 44 Minimum Deposit to Qualify £20.00 Payment providers Paysafecard NETELLER Skrill MasterCard Wager Requirement 35x % Cashback 10% % Match 100%
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Maximum bonus is 100% up to £100 | Min. deposit is £20 | No max cash out | Wagering is 35x bonus | Maximum bet with an active bonus is £5 | Eligibility is restricted for suspected abuse | Cashback is cash with no restrictions | Skrill & Neteller deposits excluded | Cashback applies to deposits where no bonus is included.
  4. 4
    Fitzdares Bonus 100% Welcome Bonus up to £100
    All Casino Games 816 Slots 720 Live Games 58 Minimum Deposit tmaxo Qualify £10.00 Payment providers VISA MasterCard Wager Requirement 40x Maximum Bonus £100.00 % Match 100%
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Minimum deposit £10. Get a Casino Bonus matched to your first deposit, up to £100, after you stake £20 on slots, credited within 48 hours. Bonus expires in 7 days and has a 40x wagering requirement. Additional T&Cs apply. Please bet responsibly.
  5. 5
    LeoVegas Bonus Welcome Bonus up to £100 + 50 Bonus Spins
    All Casino Games 2700 Slots 2028 Live Games 127 Minimum Deposit to Qualify £10.00 Payment providers VISA MasterCard PayPal Apple Pay Wager Requirement 35x Maximum Bonus £100.00 % Match 100%
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Opt in & deposit £10, £25 or £50 within 7 days & further 7 days to wager cash stakes 35x to unlock reward (£50 on 2 deposits). 3 day exp. Wagering/game contributions vary. 25 wager-extra spins x10p to be added to Big Bass Splash with each qualifying deposit, 3 day expiry.
  6. 6
    Betgoodwin Bonus Deposit £25 Play With £50!
    All Casino Games 583 Slots 510 Live Games 56 Wagering Multiplier 1x Payment providers VISA MasterCard Visa Electron Maestro Start Date on Bonus January 12th, 2024 Opt In Required icon-yes Offer Minimum Deposit 10
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. 18+. Deposit a minimum of £10.Turnover initial deposit x1 on slots to qualify, upon qualification initial deposit will be matched with free slots funds up to £25.Bonus funds to be credited into account next day.The promotion is only valid for players living in the United Kingdom who are 18 years or over.Valid for players who register on or after 12/01/2024.In order to be eligible for this promotion and receive the welcome casino bonus, customers must deposit a minimum of £10 or more.This offer is valid for a player's initial deposit only.BetGoodwin Terms and Conditions apply.
  7. 7
    FruitKings Bonus 100% Welcome Bonus up to £50 + 100 Bonus Spins
    All Casino Games 895 Slots 866 Live Games 22 Minimum Deposit to Qualify £10.00 Payment providers VISA MasterCard Maestro Skrill Wager Requirement 40x Maximum Bonus £50.00 Value per Bonus Spin £0.10
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Min £10 deposit & wager. Extra spins on Book of Dead (50 spins on day 1, 25 on day 2, 25 on day 3) 1p coin size. 40x wagering applies. Max cash out £250. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. Full T&Cs apply.
  8. 8
    Double Bubble Bonus Play £10, Get 50 Bonus Spins
    All Casino Games 545 Slots 520 Live Games 11 Minimum Deposit to Qualify £10.00 Payment providers VISA MasterCard Apple Pay Maestro Wager Requirement 1x Value per Bonus Spin £0.20 Expiry Date on Bonus December 11th, 2024
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Must opt in. Min £10 deposit & wager. 30 day expiry from deposit. Extra Spins: on Double Bubble. Spins value: 20p each. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply.
  9. 9
    Fun Casino Bonus 100% Welcome Bonus up to £123
    All Casino Games 1303 Slots 1253 Live Games 44 Minimum Deposit to Qualify £10.00 Payment providers MuchBetter Paysafecard NETELLER Skrill Wager Requirement 50x Maximum Bonus £123.00 % Match 100%
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. 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.
  10. 10
    Pub Casino Bonus 100% Welcome Bonus up to £100
    All Casino Games 2200 Slots 1997 Live Games 220 Minimum Deposit to Qualify £10.00 Payment providers MasterCard VISA Trustly Skrill Wager Requirement 40x Maximum Bonus £100.00 % Match 100%
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. #Min deposit £10, wagering 40x, 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.
  11. 11
    Regal Wins Bonus 100% Welcome Bonus up to £300 + 50 Bonus Spins

    Promo Code: REGAL

    All Casino Games 1142 Slots 1094 Live Games 27 Minimum Deposit to Qualify £20.00 Payment providers Paysafecard PayPal Visa Electron VISA Wager Requirement 50x Maximum Bonus £300.00 Value per Bonus Spin £0.10
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. 1st dep. of £20-£300, max bonus £300 on selected slots; 50x wagering on the sum of deposit & bonus applies. Max convertible 5x bonus amount received. Extra Spins: Use code: REGAL when depositing in the cashier. 5 Batches of 10 FS Daily. Winnings capped at £10 per batch. Full T&Cs apply.
  12. 12
    Virgin Games Bonus Play £10 + Get 30 Bonus Spins on Double Bubble
    All Casino Games 600 Slots 430 Live Games 18 Minimum Deposit to Qualify £10.00 Payment providers VISA MasterCard Maestro Apple Pay Wager Requirement 1x Number of Bonus Spins 30 Value per Bonus Spin £0.01
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Must opt in. Min £10 deposit & wager. 30 day expiry from deposit. Extra Spins: on Double Bubble. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. **£10 lifetime deposit for Daily Free Games.
  13. 13
    Kwiff Bonus Get up to 200 Bonus Spins
    All Casino Games 400 Slots 487 Live Games 36 Minimum Deposit to Qualify £20.00 Payment providers MasterCard VISA PayPal Payz Wager Requirement 10x Value per Bonus Spin £0.10
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Wager £/€20 on slots and Get 40 Cash Extra Spins for five consecutive days.* £/€20 stake on slots each day within 5 days of 1st deposit to qualify. £0.1 Spins on Book of Dead. £/€250 total max withdrawal.
  14. 14
    PlayOJO Bonus Get 80 Extra Spins on your 1st Deposit (No Wagering Requirements)
    All Casino Games 1666 Slots 1510 Live Games 306 Wager Requirement 0x Payment providers Siru Mobile Entropay Cubits Trustly Value per Bonus Spin £0.10 Minimum Deposit to Qualify £10.00 Winnings in Cash or Bonus Cash
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. First deposit only. This offer is only available for first time depositors. Min deposit is £10. 80 Extra Spins on Big Bass Bonanza. Spin Value: £0.10. This offer cannot be used in conjunction with any other offer. This offer is only available for specific players that have been selected by PlayOJO. If you have arrived on this page not via the designated offer via PlayOJO you will not be eligible for the offer. OJO’s Rewards and Game Play policy applies.
  15. 15
    PokerStars Bonus 200% Welcome Bonus up to £300 + 100 Bonus Spins

    Promo Code: BONUS300

    All Casino Games 641 Slots 574 Live Games 58 Minimum Deposit to Qualify £10.00 Payment providers Maestro MasterCard VISA PayPal Wager Requirement 5 redemption points per £1 Maximum Bonus £300.00 Value per Bonus Spin £0.10
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Min. deposit £10 with code ‘BONUS300’. Debit card only. Wagering requirements apply. Selected Slots only. 5 redemption points per £1 to clear bonus. Game contributions vary. 7-day expiry.
  16. 16
    100% Welcome Bonus up to £200
    All Casino Games 427 Slots 400 Live Games 209 Minimum Bet/Deposit to Qualify £10.00 Payment providers VISA MasterCard PayPal Skrill % Match 100% Maximum Bonus £200.00 Wagering Multiplier 65x
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. New players only, £10 min fund, £200 max bonus, max bonus conversion equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply.
  17. 17
    Buzz Casino Bonus Deposit £10 & Get 200 Bonus Spins
    All Casino Games 1091 Slots 820 Live Games 118 Minimum Deposit to Qualify £10.00 Payment providers VISA Visa Electron MasterCard Maestro Wagering Requirement 20x Welcome Offer icon-yes Value per Bonus Spin £0.10
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Deposit & stake £10 on slots get 200 x 10p Fire Blaze™: Blue Wizard Megaways™ spins (x20 WR).
  18. 18
    888 Bonus 100% Welcome Bonus up to £100
    All Casino Games 2766 Slots 2238 Live Games 528 Minimum Deposit to Qualify £10.00 Payment providers Trustly PayPal Skrill NETELLER Wager Requirement 30x Maximum Bonus £100.00 % Match 100%
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. 1st time depositor at 888casino only • £20 min deposit • Claim within 48 hrs • Valid for selected games • Bonus wins capped at £500 • 30x wagering – req. vary by game • Bonus expires within 90 days • Payment method & country restrictions apply • Withdrawal terms & T&Cs apply.
  19. 19
    Spin and Win Bonus 100% Welcome Bonus up to £500 + £7

    Promo Code: WELCOME

    All Casino Games 1050 Slots 900 Live Games 70 Minimum Deposit to Qualify £10.00 Payment providers Visa Electron VISA MasterCard Paysafecard Wager Requirement 40x Maximum Bonus £500.00 Bonus Code WELCOME
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. 1st dep only (min £10), Dep Code WELCOME must be entered, 100% slots bonus up to £500 + £7, valid 7 days, on selected slots; 40x wagering on the sum of deposit & bonus applies. Max convertible to real is 5x bonus amount received bonus & wins for selected slots only. Full T&Cs apply.
  20. 20
    QuinnBet Bonus £25 Cashback Bonus + 10 Extra Spins
    All Casino Games 2452 Slots 1943 Live Games 178 % Cashback 50% Payment providers VISA MasterCard Revolut Minimum Bet/Deposit to Qualify £10.00 Value per Free Spin £0.10 Wagering Multiplier x5
    #ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. To activate this promotion, you must deposit and stake a minimum of £10. You must place a minimum of 5 rounds during the qualifying period and 4 of these rounds must be at least half the value of your highest placed wager. T&Cs apply | 18+ New UK Customers Only | BeGambleAware.org | Gamble Responsibly
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Guide to Choosing the Best Slot Sites in the UK

UK slot sites all want your custom but it's not always obvious which are the best for you, the player. And you're not the same kind of slot bettor as everyone else. So, can we recommend the best slots to play and on what site? We certainly can!

Fortunately for you, we've scoured the web to identify the best slots sites in the UK, plus the best slots, to make recommendations based on genuine, first-person research. 

We rate and highlight the best UK slot sites for features like welcome bonuses and free spins a little further down this page.

Also, we highlight legitimate and safe slot sites and lead you away from the less trustworthy. We also present you the sites with the best bonuses, free slots, fastest payouts, and best customer service.

Once you've read this guide, you'll be armed with all the information you need to bet on excellent slots at all the best places.

How We Rate the Best Slot Sites in the UK

To rank the best slot sites, one of our slot experts assesses hundreds of leading UK slot sites based on game variety, number and quality, user experience, and bonuses. We try to keep our slot site review process the same every time for fairness and consistency. This is how we rate a slot site:

Step 1: we open an account at each site and judge the simplicity of the sign-up process and the security provided.

Step 2: we also test and compare online casino bonus offers among sites.

Step 3: we make deposits using different payment methods and play the site’s games, testing them for fairness, speed, and graphics.

Step 4: we also make withdrawals to assess payout times, and contact customer support to see how competent and friendly they are.

Step 5: what’s more, we consider which sites have something special. For instance, 888casino has a great slots selection but it also has one of the best online poker sites on the same platform, plus a no deposit free spins welcome offer.

The best online slots sites in the UK work well on desktop, Android and iOS devices, while providing great bonuses and convenient banking methods.

We also pay attention to new slot sites UK players can join, so we'll alert you as soon as they launch. Plus, we track established sites to make sure they haven't rested on their laurels.

Three of the Best: Top Slot Sites in the UK

Luckily, there are hundreds of excellent UK slot sites for UK players to choose from. But the downside to having so many options is that it can be difficult to choose which one to play at. In this section, we take a detailed look at some sites that specialise in various categories.

Our Best UK Slots Site for Bonuses is SpinYoo

SpinYoo gives newly-depositing players a welcome offer of 100% of your first deposit up to £250 to play on slot games, plus 100 free spins or 'Yoo Spins' on some of the biggest slot names; Starburst, Big Bass Bonanza, Fire Joker, Book of Dead, and Gonzo's Quest. It's the only welcome bonus we're currently aware of that gives you free spins on such a range of top slots. 

Other promotions on offer at SpinYoo include daily free spins when you deposit at least £50, 10% of weekly losses back up to £50, and up to £100 in bonus funds monthly in exchange for loyalty points.

There's a bonus for live casino players too - 100% of your first deposit up to £100. It's unusual for an online casino to provide a live casino welcome offer.

  • Need to know: with the slots welcome bonus, you get 20 Yoo Spins on each of the mentioned slots, with one batch per day. The minimum deposit needed to get this welcome bonus is £20.
  • Our view: there's plenty of interesting slots promos here, even the welcome deal alone which lets you test some of the most popular slots available.
SpinYoo Bonus 100% Welcome Bonus up to £250 + 100 Bonus Spins
#ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Min Dep £20. Max Bonus Bet £5. Offer: 100% of 1st deposit up to £250 + 100 Yoo Spins on Starburst, Book of Dead, Fire Joker, Gonzo's Quest, & Big Bass Bonanza respectively (first 20 credited on 1st deposit; rest credited at 07:00GMT at 20/day). Spins expire after 23:59GMT on day they’re credited. Winnings from each 20 spins capped at £50 & credited as bonus. Bonus funds expire after 30 days, are separate to Cash funds, & subject to 35x wagering of bonus + deposit amounts. Only bonus funds contribute to wagering requirements. Bonus funds can only be used on slots. Full Terms Apply.

Our Best UK Slots Site for Game Selection is Party Casino

Party Casino has more than 5,000 slot games and counting, including the best Megaways slots, so it’s an excellent site if you're a slots fan. Not only that but you can get a £250 bonus when you sign up and deposit.

  • Need to know: slot games count 100% to the first deposit bonus wagering requirements of 35x and you have 30 days to unlock the bonus.
  • Our view: although Party Casino doesn't have the biggest reputation of UK slot sites, it has virtually everything you could want, not least a diverse game selection, including jackpot slots.

Why not check out Party Casino's welcome bonus below?

Party Bonus 100% Welcome Bonus up to £100 & 50 Bonus Spins
#ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. Minimum deposit £10 once the offer is claimed. players will receive 50 Extra Spins (value £0.10 each, selected games, valid 7 days) and will have 30 days to release a bonus equivalent to the initial deposit up to £100 (35x wagering, selected games, valid 30 days) Certain deposit types are excluded.

Our Best UK Slots Site for Progressive Jackpot Games is Mr Vegas

Mr Vegas had, at our latest count, more than 320 progressive jackpot slots for you to choose from – that even impressed our battle-hardened reviewers. It also has a table of the latest jackpots from biggest to smallest, which features a Book of Atem WowPot of £33.3m and a Mega Moolah Lucky Bells jackpot of £6.6m. 

The casino also boasts the progressive jackpot games Mega Moolah: Goddess, Mega Fortune, Ancient Fortunes Poseidon WowPot Megaways, Immortal Romance: Mega Moolah, and Bankin’ Bacon.

You can even play slots alongside live casino games like blackjack or online baccarat casino titles at Mr Vegas.

  • Need to know: Mr Vegas has a special, social lobby called Encore, with player versus player competitions and the chance to talk to your opponents. 
  • Our view: Mr Vegas isn't the slickest-looking slot site, but it makes up for that with a quality jackpot slot selection and features like its Encore lobby.
Mr Vegas Bonus 100% Welcome Bonus Up To £200 + 11 Wager Free Bonus Spins
#ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. The Welcome Bonus is only available to newly registered players who make a minimum initial deposit of € 10.

The Best Online Slots in the UK in 2024

The best online slots in the UK are a matter of personal preference but some slots have proved universally popular over the years. They include classics like Gonzo’s Quest, Mega Moolah, Starburst, and Rainbow Riches. 

You can try demos of these classic slots, plus new online slots, by joining the casinos featured below. Just take note of the casino below each slot to know where to play those titles.

The 10 Best UK Slots in 2024

Starburst Game Logo
Software Provider NetEnt Logo
RTP 96.09%
Volatility Low
Maximum win £50,000
Book of Dead Game Logo
Software Provider Play'n GO Logo
RTP 96.21%
Volatility High
Maximum win £500,000
Sweet Bonanza Game Logo
Software Provider Pragmatic Play Logo
RTP 96.48%
Volatility Medium
Maximum win £2,110,000
Gonzo’s Quest Game Logo
Software Provider NetEnt Logo
RTP 95.97%
Volatility Medium
Maximum win £125,000
Big Bass Bonanza Game Logo
Software Provider Pragmatic Play Logo
RTP 96.71%
Volatility High
Maximum win £525,000
Legacy of Dead Game Logo
Software Provider Play'n GO Logo
RTP 96.58%
Volatility High
Maximum win £500,000
Gates of Olympus Game Logo
Software Provider Pragmatic Play Logo
RTP 96.50%
Volatility High
Maximum win £500,000
Eye of Horus Game Logo
Software Provider Blueprint Gaming Logo
RTP 96.31%
Volatility Medium
Maximum win £50,000
Fire Joker Game Logo
Software Provider Play'n GO Logo
RTP 96.15%
Volatility Medium
Maximum win £80,000
Bonanza Game Logo
Software Provider Big Time Gaming Logo
RTP 95.98%
Volatility High
Maximum win £240,000

UK Slots with the Biggest Progressive Jackpots

A progressive jackpot slot is a game where the main prize keeps growing until someone wins it and then the jackpot starts to build again. A handful of lucky UK slots players have won mega moolah by playing progressive jackpot slots at UK sites in recent years. 

One of the most famous wins came in 2015, when an English soldier called Jon Heywood won a cool £16 million playing the Mega Moolah slot. 

He staked just 25p on a spin and landed the jackpot, which saw him claim a place in the Guinness Book of World Records. A Belgian player has since topped Jon Heywood’s win, playing Mega Moolah, but many slot lovers are bidding to claim a new record each day.

The 2024 jackpot slots with the biggest prizes at the time of writing are:

  1. 💰 WowPot slots - £35m
  2. 💰 Mega Moolah - £8.7m 
  3. 💰 Jackpot Giant - £6.2m 
  4. 💰 Dream Drop slots - £2.5m
  5. 💰 MegaJackpots slots - £1.1m
  6. 💰 Mega Fortune - £0.8m

Why not visit the featured online slot sites below, which have excellent jackpot slots line-ups?

Slot SiteJackpotsSlot Providers
Winlandia88540
Parimatch56264
Fantastic Spins48712

Types of Online Slots Bonus

Most sites use an online slots bonus to attract new customers. They vary and they come with different wagering requirements, so it pays to shop around for the best offers. 

No Deposit Bonuses

Some sites offer a no deposit bonus on slots when you sign up for a new account. You might find one at other times but this kind of bonus is rare. One of the few sites that provides a slots bonus where you don’t have to deposit first is 888casino, which currently offers 88 free spins when you open an account with them.

Reload Bonuses

A reload bonus is a deposit incentive and reward aimed at players who have already opened an account with a casino. As an example, a casino might give you a 50% reload bonus up to £200 when you deposit at least £30. This reload bonus is usually awarded as a non-withdrawable amount which must be wagered before it can be withdrawn as cash.

A casino might also give you cashback if you deposit a minimum amount but lose bets during a certain period. For example, if you deposit at least £20 but lose all of that in the next seven days, you could get £2 or 10% back once the week is over.

First Deposit Bonuses

Almost every slot site advertises a welcome bonus to convince bettors to join and these are usually based on your first deposit, or sometimes, up to your first four deposits.

For example, one site might offer a 100% sign up bonus for slots worth up to £500, plus 50 bonus spins. So if you deposit £500, you get £1,000 to play with and 50 extra spins.

  • One site that doesn’t provide a welcome bonus is No Bonus Casino – instead, they give you 10% on all losses, forever.
No Bonus Bonus Always 10% Casino Cashback
#ad. 18+. Gamble Responsibly. Begambleaware.org. New Customers Only. T&Cs apply. 10% Cash back without wagering the day after if the player loses all the money in the account. Min deposit £10. Gameplay is monitored.

Daily Free Spins

Some of the best slots sites even offer daily free spins to players. These can be a bonus for betting a certain amount the previous day or week, a cushion if you lose bets, or a large free spins prize that's given over several days.

Loyalty Programmes

The best UK slot sites have a loyalty programme, aka a VIP programme, where you’re rewarded for being a regular bettor. You can earn rewards like lower wagering requirements for bonuses, holiday prizes, a personal customer support assistant, and the ability to use your cash balance online and at land-based casinos. It's clear to see why these programmes are often regarded as the best high roller casino bonuses out there.

Wagering Requirements

Another important factor is the wagering requirement, also known as the rollover requirement. This refers to the number of times you need to play this bonus credit before you can make a cash withdrawal.

Imagine you're renting books from a library. The wagering requirement is like a rule that says you need to read a certain number of pages before you can rent a book, or in this case, withdraw bonus funds.

Imagine you're renting books from a library. The wagering requirement is like a rule that says you need to read a certain number of pages before you can rent a book, or in this case, withdraw bonus funds.

You keep reading (playing games) until you've read enough pages (bet your bonus money enough times) to meet the requirement. Once you do, you can ‘check out’ your winnings.

If you'd like to know more about how wagering requirements work, you should visit our slots bonus page for a detailed explanation. There, you can also use our wagering calculator.

Our wagering calculator comes in handy with understanding bonuses, and you can find three fantastic ones at the sites featured below:

Slot SiteSlotsSlot Providers
Mr Vegas3121167
Aztec Wins152031
Slot Boss200037

Types of Online Slots

The online slots world keeps growing. Players have more entertaining casino games to choose from than ever, with new themes and technology being introduced all the time. Modern slot games can be divided into several categories:

Classic Slots

These are the original online slot games and they still exist on slot sites, despite becoming dated. Classic slots often have traditional themes and are reminiscent of fruit machines at land-based casinos.

Video Slots

Playing online slots has become more exciting with the release of the video slot, which is now the dominant slot type. Their game mechanics are more evolved than in classic slots, and can feature more paylines and eye-catching bonus rounds. Their improved graphics allow for in-depth characters and themes and the overall experience is more immersive.

Video slots online include 3-reel and the more elaborate 5-reel slots, which contain exciting features like wilds and scatter symbols, with live-action backgrounds and animations.

3D Slots

3D slots take video slots to another level. These cutting-edge games feature characters that feel like they’re jumping out of the screen, making betting on online casino slots almost cinematic. Sometimes these games feature 3D cutaway scenes as part of bonus rounds, while others are a total 3D experience.

The top 3D slots right now include The Rift, Turning Totems, Gonzo’s Quest and Jungle Jim El Dorado.

Live Casino Slot Games

Another recent creation is the live slot game. Like live blackjack and roulette online, these feature a live human dealer who seems to be inside the game, alongside the slot’s virtual character. Good examples of live slot games are Gonzo’s Quest Live from NetEnt and Safari Riches Live by Playtech.

Scatter Slots

A scatter slot is simply a slot game that features scatter symbols, which, if you land them, can help boost your win. They make games more fun and lucrative. These scatters usually tie in with the theme of the slot machine like pyramids in an Ancient Egypt-style game.

Progressive Jackpot Slots

These games are very popular as they give players the chance to win huge prizes from small stakes. Casual players have good reason to think these are the best slots to play for real money, because they stand a chance of banking a big win that previous players have helped grow.

With a progressive jackpot slot, a small portion of each player’s stake contributes to the jackpot, which rises until a player triggers it. There have been several players winning seven-figure and even eight-figure prizes lately. 

Fruit Machines

These slots mimic the machines you find in bars and arcades across the UK, featuring three reels and a payline in the middle. Symbols generally include classics like fruit, bells and the number seven. 

‘Fruities’ give you the option to hold or nudge reels, adding another layer of fun. The best fruit machine games at online slots sites for 2024 include Fruit Shop, Booming 7 and Fruit Fiesta.

Branded Slots

The trend for themed slot games has accelerated. Themed slots are similar to video slots, but they follow a narrative based on a famous movie, TV show, band or another pop culture icon. Some of the best branded slots in 2024 are A Nightmare on Elm Street: Megaways, Britain’s Got Talent, Vikings, and Guns N’ Roses.

Slot Comparison Tool

You can click the image below if you want to use our tool to contrast slots for bonus features, RTP, if they have a jackpot, and their maximum win.

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Slots RNG (Random Number Generators) and How they Affect Games

A random number generator (RNG) is used to calculate the result each time you hit spin on an online slot game. An RNG is also used on physical slots found in casinos and arcades, and is used to determine the results of online casino games like at online blackjack sites.

The random number generated goes through the game’s software and produces a tangible result, giving you a win or a loss. 

All licensed operators providing for UK players will fall under the jurisdiction of the UK Gambling Commission (UKGC), which monitors the RNG technology that online slots sites use to ensure it remains fair.

Payouts and RTP

The key concept to familiarise yourself with when playing slots online is RTP, which stands for return to player percentage. This percentage refers to the amount of money a slot is expected to return to you over a prolonged period, based on a calculated average.

It essentially refers to the house edge. If a slot has an RTP of 94.75%, it means the average the house claims will be £94.75 for every £100 staked. However, slots are games of chance, so some players will make a profit and others will make a loss. That’s just how it goes. 

The RTP gives you an idea of the average return you can expect. You should look for as high an RTP as possible. NetEnt’s Mega Joker has offered an RTP of up to 99%, while Jackpot 6000 goes up to 98.8%, making these some of the best payout online slots in the UK going off RTP.

You will be presented with a payout table when you browse the games at the best online slots sites. It will tell you the symbol values and the paylines, while explaining features and any relevant jackpot information. Payout tables also list the prizes either as a cash amount or as a multiplier. 

For example, if you see ‘100x’, it means you stand to win 100 times the size of your single line bet. It will also inform you of the online slots bonus rounds and the minimum and maximum prizes. You can use this information to determine your potential payouts on new online slots.

The Best RTP Slots in the UK

Here are some of the best RTP slots at UK online casinos:

The Best UK Slots Software Providers

The best UK slots providers compete to launch the most popular games each year and sell to the best slot sites in the UK. And the best online slot sites let you filter games by provider. It's not unusual for players to prefer one slot provider over others, because they tend to create games of a certain style. 

For example, Play'n GO creates slots with interesting stories, incredible graphics, and humour, while NetEnt makes slots, including jackpot slots, that have a certain ingredient that helps some reach legendary status. 

These are the top slot software providers in the industry right now:

🍀 Microgaming

The Isle of Man-based firm is one of the largest online slots providers in the UK. It supplies hundreds of titles like Mega Moolah, Game of Thrones, Mermaids Millions and Thunderstruck II.

🔷 Playtech

The Matrix, Superman, Top Gun and American Dad are some of the exciting branded casino slots that Playtech has produced. It’s also famous for making Age of the Gods and Big Bad Wolf.

♦️ NetEnt

This Swedish software supplier is responsible for some of the best online slots in the UK, including fan favourites Starburst, Gonzo’s Quest and Mega Fortune. It also makes branded video slots, such as Gordon Ramsay’s Hell’s Kitchen.

⭕️ Play’n GO

This is another Swedish company with a wealth of exciting UK online slots to its name. Play’n GO is responsible for hits, such as Troll Hunters 2, Book of Dead and Mystery Joker.

💥 IGT

International Game Technology or IGT is a multinational firm headquartered in London, with offices in Las Vegas, Rhode Island and Rome. It’s a pioneer in branded video game slots, and its biggest hits include Family Guy, Da Vinci Diamonds, Pharaoh’s Fortune, and Cleopatra.

🧿 SG Digital

The digital division of Scientific Games produces several exciting slots after purchasing other providers, NYX Entertainment and NextGen. They include Raging Rhino Megaways, Lucky Lanes, and Prisma Blast.

🌀 Novomatic 

Austrian software provider Novomatic celebrated its 40th birthday in 2020. It works with the best slot sites in the UK and releases new online slots on a regular basis. They include Sizzling Hot, Book of Ra and Lord of the Ocean.

🔲 Betsoft

This software firm is renowned for quirky releases, such as The Slothfather and Good Girl Bad Girl. It has a particular focus on slot apps and casinos and 3D slots.

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Slot Tip

You can play free demo games of the best UK slots right here by visiting our free slots catalogue.

Tournaments at UK Slot Sites

The best online slots sites often host tournaments based on a certain slot – typically a classic game or a hot new release. You can join these tournaments and bid to complete the challenges to climb the leaderboard and win prizes. Exciting prizes include cash, trips, cars, and gadgets. 

These online slots tournaments are generally hosted in collaboration with the software provider to boost the profile of a game. They allow players to earn valuable prizes and are worth finding at the best gambling sites for UK slots.

How to Sign Up to Online Slot Sites

You could visit some of the sites above or other casinos featured on this page, and then set up an account and play the best UK slots by following these steps:

  • Visit the cashier and make a deposit using your preferred payment method.
  • Select a slot that appeals to you, paying careful attention to the payout table.
  • Set your coin value, aka your bet, and set the maximum bet per line if you are playing a progressive jackpot slot. Then hit the spin button.
  • As long as you’re having fun and betting within your limits, play until you decide to make a withdrawal. Remember that all wins read from left to right.
  • Finally, you can visit the cashier to make a withdrawal. Choose your preferred withdrawal method, enter your desired or maximum amount, and confirm. Withdrawals are never instant, and wait times should be clear in the terms and conditions.

Payment Methods at UK Slot Sites

The best slots sites will offer you a wide range of payment methods for making deposits and withdrawals. Debit card payments are popular among visitors to UK slot sites and are widely accepted. 

Common online casino payment methods include e-wallets, such as Neteller or PayPal, but you probably won’t be able to claim a bonus if you opt for Neteller or Skrill as it’s difficult for a casino to track if users have claimed the bonus before.

Vouchers, such as a Paysafecard, are accepted at many new online slots sites, along with other prepaid cards.

In addition, withdrawal times vary depending on the online casino you play at and the withdrawal method you choose.

You might need to make withdrawals via the same method you used to make a deposit, as this is a licensing condition designed to stamp out money laundering.

Why not visit the casinos featured below? They're known for fast payouts.

Slot SiteSlotsAvg. Withdrawal Time
Buzz Bingo312124 hours
JackpotJoy140024 hours
Virgin Games43024 hours

Meet The Author

16 Years
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James Briscoe
James Briscoe
Editor Editor

James worked in non-league football as a press officer before copy-editing local and national newspapers from around Britain. He then stepped into the online casino world in Malta as a copywriter, and since then, he’s continued his iGaming journey as a freelance writer, and is delighted to be helping make Casinos.com content the best it can be.

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