Sign Up & Claim Your Slots Welcome Bonus

James Briscoe

Updated by James Briscoe

Editor

Lee James Gwilliam

Fact Checked by Lee James Gwilliam

Senior Vice-President

Last Updated 23rd Dec 2024, 09:50 AM

What's more fun than playing the best slot games around? How about betting on slots with an online slots bonus that could boost your bankroll or even give you extra spins?

All UK casino sites worth your time will offer promos like these, especially to new players. On this page, I'll run you through my top sites for a slots bonus. I'll also show how to claim slots bonuses, in case you're new to it, and there's our handy wagering calculator below to help you compare offers.

The Best Slots Bonus Sites in the UK

Some slot sites really know how to cater to slots fans, and this table previews a few of them. These casinos offer exciting slots bonuses that we think you'll love. 

To sign up and get a slot bonus, just click the casino's name in the table!

Casino SiteBest For
Duelz Casinoāš”ļø Unique 'Duel' Mode to Compete Against Other Slots Players
Dream VegasšŸ’° Big Rewards for High Rollers
888 CasinošŸ“± Top Quality Experience Playing Slots via Mobile
Party CasinošŸŒŸ Exciting New Games Sections Highlights Top Releases
Mr VegasšŸ¤© Substance over Style: More Than 6,000 Slots

More of the Best Slot Bonuses:

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
    Mr Vegas Bonus 100% Welcome Bonus Up To Ā£200 + 11 Wager Free Bonus Spins
    Casino Games 8000+ Slots 7500+ Live Games 680+ Value per Free Spin Ā£0.10 Payment providers VISA MasterCard PayPal Trustly Minimum Deposit to Qualify Ā£10.00 Wager Requirement 35x Maximum Bonus Ā£200.00
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. The Welcome Bonus is only available to newly registered players who make a minimum initial deposit of ā‚¬ 10.
  2. 2 Duelz
    Duelz Bonus 100% Welcome Bonus up to Ā£100 + 100 Bonus Spins
    Casino Games 2600+ Slots 2500+ Live Games 60+ Minimum Deposit to Qualify Ā£20.00 Payment providers VISA MasterCard Skrill NETELLER Wager Requirement 30x Maximum Bonus Ā£100.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min deposit: Ā£20. Max Ā£100 bonus. Max bet with active bonus: Ā£2. Wagering required 100% match bonus: 30x deposit + bonus. Max win from welcome bonus: Ā£500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row. Max Free Spins winnings: Ā£100. Free Spins winnings credited as bonus money with 45x wagering & 3 days expiry. Deposit bonus & Free Spins wins are forfeited 30 days after bonus is credited if the wagering is not met. Game weighting and restrictions apply.
  3. 3 PlayOJO
    PlayOJO Bonus Get 80 Free Spins on your 1st Deposit (No Wagering Requirements)
    Casino Games 5500+ Slots 5000+ Live Games 300+ Wager Requirement 0x Payment providers Bank Transfer MasterCard VISA Apple Pay Value per Bonus Spin Ā£0.10 Minimum Deposit to Qualify Ā£10.00 Winnings in Cash or Bonus Cash
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. First deposit only. This offer is only available for first time depositors. Min deposit is Ā£10. 80 Free Spins on Big Bass Bonanza. Spin Value: Ā£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. OJOā€™s Rewards and Game Play policy applies.
  4. 4 Slots Magic
    Slots Magic Bonus 100% Welcome Bonus up to Ā£50 + 50 Free Spins on Book of Dead
    Casino Games 4500+ Slots 3800+ Live Games 440+ Value per Free Spin Ā£0.10 Payment providers VISA MasterCard Apple Pay PayPal Maximum Bonus Ā£50.00 Wagering Multiplier 30x Minimum Bet/Deposit to Qualify Ā£10.00
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Max. Bonus Ā£50. Maximum amount of Free Spins is 50. Game: Book of Dead, Spin Value: Ā£0.10. WR of 30x Deposit + Bonus amount and 60x Free Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min Ā£0.10) of the free spin winnings and bonus amount or Ā£5 (lowest amount applies). Spins must be used and/or Bonus must be claimed before using deposited funds. Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonuses do not prevent withdrawing deposit balance. Bonus Policy applies.
  5. 5 BetStorm
    BetStorm Bonus 100% Welcome Bonus Up To Ā£100 + 20 Bonus Spins
    Casino Games 1104 Slots 1065 Live Games 24 Minimum Deposit to Qualify Ā£10.00 Payment providers VISA MasterCard PayPal NETELLER Wager Requirement 50x Maximum Bonus Ā£100.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Wager from real balance first. 50x wager the bonus. bonus valid for 30 days. Free spins valid for 7 days. Max conversion: 3x the bonus amount or from free spins Ā£20.
  6. 6 Coral
    Coral Bonus Ā£50 Bonus & 1000 Coral Coins When You Play Ā£10 on Casino
    Casino Games 3600+ Slots 3400+ Live Games 120+ Maximum Bonus Ā£50.00 Payment providers VISA MasterCard Visa Electron Maestro % Match 100% Minimum Deposit to Qualify Ā£10.00 Wagering Requirement 40x
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Deposit req (certain types excluded). Bet Ā£10+ on qualifying games to get Ā£50 Bonus (selected games, 40x wag req, accept within 14 days, valid for 30 days) & 1000 Coral Coins.
  7. 7 Spin and Win
    Spin and Win Bonus 100% Welcome Bonus up to Ā£250 + 100 Free Spins
    Casino Games 2100+ Slots 2000+ Live Games 50+ Minimum Deposit to Qualify Ā£10.00 Payment providers Visa Electron VISA MasterCard Paysafecard Wager Requirement 30x Value per Bonus Spins Ā£0.10 Maximum Bonus Ā£250.00
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min dep (Exc. PayPal) Ā£10. 100% Bonus up to Ā£250 + 100 free spins valued 10p, playable on selected slots. 30x wagering applies to bonus and wins generated from spins, valid 7 days. Max win capped and vary.
  8. 8 Dream Vegas
    Dream Vegas Bonus 100% Welcome Bonus up to Ā£300 + 150 Bonus Spins
    Casino Games 3010 Slots 1421 Live Games 19 Minimum Deposit to Qualify Ā£20.00 Payment providers Entropay NETELLER Paysafecard Skrill Wager Requirement 35x Maximum Bonus Ā£300.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. One offer per player. Max bonus bet Ā£5. Offer: 100% bonus match on 1st deposit + bonus spins. Value of bonus & number of spins depend on deposit amount: Ā£20-Ā£100: max Ā£100 bonus + 50 spins on selected games; Ā£101-Ā£200: max Ā£200 bonus + 100 spins on selected games; or Ā£200+: max Ā£300 bonus + 150 spins on eligible NetEnt Games. Winnings from spins credited as bonus and capped at Ā£100. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute to wagering requirement. Bonus funds expire within 30 days; bonus spins within 72hrs. Affordability checks apply.
  9. 9 Magical Vegas
    Magical Vegas Bonus Deposit Ā£10 & Get Ā£30 Bonus + 50 Free Spins

    Promo Code: MV50

    Casino Games 2215+ Slots 2165+ Live Games 70+ Minimum Deposit to Qualify Ā£10.00 Payment providers PayPal Maestro MasterCard VISA Wager Requirement 30x Maximum Bonus Ā£30.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min dep (Excl PayPal) Ā£10 for 30 slots bonus and 50 free spins. Game restrictions apply. Free Spin value @10p/spin. Free spins and Bonus Wagering 30x and Maximum winnings to cash is 5x.
  10. 10 Bet365
    Bet365 Bonus Deposit and Play with Ā£10 and get 100 Bonus Spins
    Casino Games 2000+ Slots 1600+ Live Games 60+ Minimum Deposit to Qualify Ā£10.00 Payment providers Cheque Bank Transfer Paysafecard PayPal Wager Requirement 0x Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Deposit and stake Ā£10 on eligible Casino games to get 100 Free Spins. Time limits and game restrictions apply.
  11. 11 Fun Casino
    Fun Casino Bonus 100% Welcome Bonus up to Ā£123
    Casino Games 2500+ Slots 1200+ Live Games 90+ Minimum Deposit to Qualify Ā£10.00 Payment providers MuchBetter Paysafecard NETELLER Skrill Wager Requirement 50x Maximum Bonus Ā£123.00 % Match 100%
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Maximum bonus is Ā£123. Max bet with bonus is Ā£5. No max cash out. Wagering is 50x. Skrill & Neteller excluded. Eligibility is restricted for suspected abuse.
  12. 12 Grosvenor
    Grosvenor Bonus Deposit Ā£20, Play With Ā£50
    Casino Games 1200+ Slots 1000+ Live Games 150+ Minimum Deposit to Qualify Ā£20.00 Payment providers PayPal MasterCard Visa Electron VISA Wager Requirement 30x Maximum Bonus Ā£50.00 % Match 150%
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min Deposit Ā£20. Max Bonus Ā£30, Bonus Amount non-withdrawable, Playable on Selected Games Only. 30X Wagering for Ā£30 Bonus. Expires Within 30 Days. Max Win Ā£2000.
  13. 13 Regal Wins
    Regal Wins Bonus Deposit Ā£10 & Get Ā£20 Bonus + 100 Free Spins

    Promo Code: RW100

    Casino Games 2200+ Slots 1935+ Live Games 75+ Minimum Deposit to Qualify Ā£10.00 Payment providers Paysafecard PayPal Visa Electron VISA Wager Requirement 30x Maximum Bonus Ā£20.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min dep (Excl PayPal) Ā£10 for 20 slots bonus and 100 free spins. Game restrictions apply. Free Spin value @10p/spin. Free spins and Bonus Wagering 30x and Maximum winnings to cash is 4x.
  14. 14 Playzee
    Playzee Bonus 100% Welcome Bonus up to Ā£300 + 100 Bonus Spins
    Casino Games 2000 Slots 1672 Live Games 57 Minimum Deposit to Qualify Ā£20.00 Payment providers PayPal Paysafecard NETELLER Skrill Wager Requirement 35x Maximum Bonus Ā£300.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min Dep Ā£20 Max Bonus Bet Ā£5 Offer: 100% of 1st deposit up to Ā£300 + 100 Zee Spins on Starburst (first 10 credited on 1st deposit; rest credited at 07:00GMT at 10/day) + 500 Zee Points. Spins expire after 23:59GMT on day theyā€™re credited. Winnings from each 10 spins capped at Ā£50 & credited as bonus. Bonus funds expire after 30 days, are separate to Cash funds, & subject to 35x wagering of bonus + deposit amounts. Affordability checks apply.
  15. 15 Lucky VIP
    Lucky VIP Bonus Deposit Ā£20, Play with Ā£30
    Casino Games 2200+ Slots 2000+ Live Games 55+ Minimum Deposit to Qualify Ā£20.00 Payment providers PayPal MasterCard VISA Paysafecard Wager Requirement 20x Maximum Bonus Ā£30.00 Multiple Deposit Bonus icon-no
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min Deposit Ā£20 - PayPal Excluded. Max Bonus, Wager requirement & Max win Ā£2,000 Apply. Play on selected games.
  16. 16 888
    888 Bonus Get a 200% Bonus up to Ā£200
    Casino Games 1300+ Slots 950+ Live Games 300+ Minimum Deposit to Qualify Ā£10.00 Payment providers Trustly PayPal Skrill NETELLER Wager Requirement 30x Maximum Bonus Ā£200.00 % Match 200%
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. First-time depositors ā€¢ Min deposit Ā£10 ā€¢ Claim within 48 hours ā€¢ Expires in 90 days ā€¢ 30X wagering ā€¢ Valid on selected slots ā€¢ UK and Ireland only
  17. 17 Party
    Party Bonus Get a 100% Bonus up to Ā£100
    Casino Games 1500+ Slots 1200+ Live Games 120+ Minimum Deposit to Qualify Ā£10.00 Payment providers Paysafecard Skrill NETELLER Maestro % Match 100% Maximum Bonus Ā£100.00 Wagering Multiplier 30x
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. UK & ROI. Deposit minimum Ā£10/maximumĀ£100 to receive a 100% bonus up to Ā£100 (30x wagering, selected games, valid 30 days). Certain deposit types are excluded.
  18. 18 Casumo
    Casumo Bonus 100% Welcome Bonus up to Ā£25 + 20 Bonus Spins
    Casino Games 3700+ Slots 3500+ Live Games 120+ Minimum Deposit to Qualify Ā£10.00 Payment providers Paysafecard MasterCard VISA Apple Pay Wager Requirement 30x Maximum Bonus Ā£25.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Opt-in required. 20 Bonus Spins on ā€œSahara Riches Cash Collectā€ at 10p per spin and 100% Deposit Bonus up to Ā£25 on first deposit (payment method and play restrictions apply). Min. deposit Ā£10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. Ā£5/spin or Ā£0.50/line. 30 days expiry.
  19. 19 Pink Casino
    Pink Casino Bonus 100% Welcome Bonus up to Ā£150 + 50 Bonus Spins
    Casino Games 1200+ Slots 1000+ Live Games 110+ Minimum Deposit to Qualify Ā£10.00 Payment providers VISA MasterCard PayPal Apple Pay Wager Requirement 35x Maximum Bonus Ā£150.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. 7 days to claim offer and deposit a min of Ā£10 with a further 7 days to wager 35x. Cash stakes only and wagering contributions vary. Max reward Ā£150. 50 wager-free spins 0.10p each on Big Bass Splash awarded after wagering complete, winnings paid as cash. 3 day expiry.
  20. 20 SpinYoo
    SpinYoo Bonus 100% Welcome Bonus up to Ā£250 + 100 Bonus Spins
    Casino Games 1750 Slots 1675 Live Games 31 Minimum Deposit to Qualify Ā£10.00 Payment providers VISA Trustly MasterCard Maestro Wager Requirement 35x Maximum Bonus Ā£250.00 Value per Bonus Spin Ā£0.10
    #ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min Dep Ā£20. Max Bonus Bet Ā£5. Offer: 100% of 1st deposit up to Ā£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 theyā€™re credited. Winnings from each 20 spins capped at Ā£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.
Showing 20 of 65

My Top Sites with Slot Bonuses

Most online casinos have some sort of welcome offer. However, if itā€™s just online slot games youā€™re interested in, then you can find specific slot welcome offers.

Here at Casinos.com it's our business to find the best slot sites in the UK with the best promotions. And what's more, every casino we feature is licensed by a reputable gambling regulator, so you know theyā€™re legit.

Below are some of my favourite sites for the best slots bonuses in the UK:

Best Overall Slot Bonus: Crystal Slots

  • Features: spin the Mega Reel to claim up to 500 free spins on the slot game Sweet Bonanza when you sign up and deposit Ā£10.
  • Wagering requirements: x65
  • Need to know: when you sign up at Crystal Slots and deposit at least Ā£10, you get to spin the Mega Reel, with potential prizes including Amazon vouchers, and 500 free spins on Sweet Bonanza. Then, after every deposit of Ā£20 or more, you get another spin of the Mega Reel.
  • Our view: a bunch of 500 free spins is a great way to get into the swing of things and get to know the casino better. And while the wagering requirements to withdraw your bonus funds as cash are high, it's cool that you can spin the Mega Reel after every Ā£20 deposit.
Crystal Slots Bonus Deposit Ā£10, Get up to 500 Bonus Spins on Sweet Bonanza
#ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Ā£10 min fund, Free spins won via mega reel, 65x bonus wagering requirements, max bonus conversion to real funds equal to lifetime deposits (up to Ā£250).

Best Free Spins Slot Bonus: NetBet

  • Features: a 500 free spins slots sign up bonus when you use the code NBWELCOME500 and deposit Ā£10. 
  • Wagering requirements: any winnings with the free spins are converted into bonus money and this must be wagered 40 times before you can withdraw any cash.
  • Need to know: you get 50 free spins as soon as you make your first qualifying deposit and then you get the remaining 450 free spins in batches of up to 75 spins within six days. Skrill, Neteller and prepaid card payment options are not included in this slots welcome bonus in the UK. 
  • Our view: this is a healthy chunk of free spins to start enjoying slots online, and we appreciate the relatively low first deposit amount needed. 
NetBet Bonus Up To 500 Bonus Spins Promo Code: NBWELCOME500
#ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Ā£10+ deposit, no e-wallets/prepaid cards, up to 500 Free Spins, 40x wagering on Free Spins winnings, Ā£5 max bonus stake.

Best Cashback Slot Bonus: No Bonus Casino

  • Features: 10% cashback on your deposits when you lose all the money you deposited in a single day, forever.
  • Wagering requirements: no wagering necessary.
  • Need to know: the cashback bonus is available for 10 days after you made the associated deposit. Your balance must be below Ā£10 to activate a cashback withdrawal.
  • Our view: we like No Bonus Casino's cashback deal, because it softens the blow of losing bets. What's more, the fact you don't need to wager the bonus makes it very straightforward. We also like how this slot bonus is so different to 99% of others out there. It also means you can get something out of best payout online slots, which are often excluded with other promos. 
No Bonus Bonus Always 10% Casino Cashback
#ad. 18+. Gamble Responsibly. GambleAware.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 Ā£10. Gameplay is monitored.

Best Weekly Slot Bonuses: LeoVegas

  • Features: 30 10p free spins on Big Bass Bonanza every Thursday and 10 20p free spins on Rich Wilde and the Book of Dead every Monday.
  • Wagering requirements: 4 x wagering on casino games for the Thursday free spins and 3 x wagering on casino games for the Monday free spins. 
  • Need to know: to get the Thursday free spins on Big Bass Bonanza, log in and get your offer card between 09:00 and 23:59, before making your deposit of at least Ā£25. For the weekly free spins on Book of Dead, log in between Monday at 09:00 and Wednesday at 23:59, get your offer card, and deposit at least Ā£25. You can also get slots deposit bonuses on new and promoted games like 25 free spins worth up to ā‚¬1 each on The Bounty Hunter Unchained.
  • Our view: LeoVegas has great slots bonuses, including these two weekly offers, and even if these deals are eventually removed, we can imagine them being replaced by other cool bonuses. Book of Dead is one of the most common casino video slots included in slots deposit bonuses, however, giving players free spins every week is pretty rare.
LeoVegas Bonus Welcome Package up to Ā£200 + 100 Bonus Spins
#ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Opt in & deposit Ā£10+ in 7 days & wager 1x in 7 days on any eligible casino game (excluding live casino and table games) for 50 Free Spins. Wagering contributions vary. Free Spins worth 10p each on Big Bass Splash. 3 day expiry.

How to Find the Best Slot Bonuses in 2024

Slots are the most played games at casino sites, so it's no surprise many operators try to attract you with an online casino bonus on slots.

There's one obvious reason why slots are so popular. If you're lucky, you can win big jackpots from modest stakes. For instance, a UK player won Ā£16 million from just 25p! This kind of jackpot size and win is rare though ā€” there's perhaps a one in 34 million chance of winning a Ā£16 million slot jackpot. 

Another big attraction to slots is bonuses. You can get a 100% match bonus to sign up at a casino, and existing players can also grab a slots deposit bonus.

We aim to bring you all the top slots bonuses on brand new online slots in the UK. The market is constantly changing, so instead of testing hundreds of casinos yourself, we do that for you.

Finding the Deals: Online Slots Bonus Offers

When seeking the best offers, most of our time is spent within the T&Cs of slots bonuses. Itā€™s only once weā€™ve studied these that we can assess if a bonus is worth promoting.

We want to make sure you get the right slots bonuses for the games you want to play, but we wonā€™t push a site based on reputation alone.

Some casinos make you work harder than others to unlock your bonus, and weā€™ll let you know which offer the best value for the time and effort required.

How to Sign Up for the Best Slots Bonuses in the UK

  1. Choose a casino āœ… | Select from our list above and see which one offers the best slot bonus UK players can claim. Note that free spins bonuses let you play a few free online slots and find a game you love.
  2. Open an account šŸ“ | To play online bonus slots, players first need to create an account with that casino site.
  3. Check the terms and conditions šŸ“„ | Although most bonuses come with similar terms, it makes sense to check them before making a deposit.
  4. Activate an online slots bonus šŸŽ | Some bonuses, such as no deposit bonuses or free spins, can be activated simply by opening a new account. Some require a promo code ā€“ if youā€™re unsure, contact customer support for help.
  5. Make a deposit šŸ’° | Most of the biggest bonuses require money to be paid into your account before your bonus can be used. Minimum deposits are usually at least Ā£10 but often Ā£20. Remember, many e-wallets are excluded from claiming bonuses, but you can still find PayPal casinos online that will give you a bonus.
  6. Start spinning! šŸŽ° | Once you have your bonus, start using it to play slots! If you win using bonus spins or credit and have fulfilled the wagering requirements, youā€™ll be able to withdraw your funds or keep betting.

Types of Slot Bonuses in the UK

Online casinos are ever-changing and bonuses evolve too. Any two offers are rarely the same, but plenty have a similar theme. Below, we highlight a range of bonuses that you can access at several online casinos.

UK Slots Sign Up Bonus

These bonuses welcome new players to the casino. The welcome bonus is the most common type of bonus that you can get as itā€™s part of a casinoā€™s strategy to get you to sign up.

Free Spins Bonuses

Free spins are a nice taste of the casinoā€™s slots section, allowing you to get to know the casino and perhaps win cash too. You can get these offers on their own or with another offer, like a matched deposit bonus.

The number of casino free spins you get will vary but the winnings will usually need to be wagered before you can withdraw any real money. This means betting the value of the bonus one or more times. These bonuses could also be called bonus spins, extra spins, and super spins.

The following free spins offers may interest you: 

Deposit Ā£10, Get Ā£40 in Bingo Bonuses + 200 Bonus Spins
Free Spins 110
#ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Deposit Ā£10, stake Ā£10 on Bingo, get Ā£30 bonus (x4 Wagering) & Ā£10 Club voucher, &/or stake Ā£10 on slots, get 200 x 10p Fishinā€™ Frenzy The Big Catch Jackpot King (x20 wagering) & Ā£5 Club slots voucher. Use winnings in cash balance/further deposit to claim both. Ā£5 minimum withdrawal.
100 Free Spins when you play Ā£10
Free Spins 100
#ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Deposit & Wager a minimum of Ā£10 on any slot game to receive 100 Free Spins on Big Bass Splash. Winnings from Free Spins credited directly to cash balance. Neteller and Skrill deposits are excluded. Free Spins expire 2 days after the deposit.
Welcome Bonus up to Ā£66 + 66 Bonus Spins
Free Spins 66
#ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min deposit Ā£20. Max bonus 100% up to Ā£66 on 1st deposit. 66 spins on Big Bass Bonanza on 2nd deposit. 35x wagering applies, within 21 days. Max wins from spins Ā£100. Spins expire after 24 hours.

Slots Deposit Bonus

The deposit bonus, or a matched deposit bonus, is very common. This is where the casino site will match the amount that you deposit up to a certain amount, e.g. you get a 100% bonus up to Ā£100.

The value of offers like this vary depending on if youā€™re a new customer or a returning one. The bigger offers are usually reserved for attracting newbies, however, existing players can also claim offers like reload bonuses.

No Deposit Bonus

These are as rare as hensā€™ teeth these days, but if youā€™re lucky, you can still grab the odd no deposit bonus for slots. As the name would suggest, this is a bonus that the casino will give you for simply registering an account, with no deposit needed to trigger the bonus.

A bonus which requires no deposit could be free spins, or on a sports betting site, a free bet. Then, youā€™ll have to wager whatever you win with the bonus. No deposit bonuses are on the rarer side these days, but for slots, we have seen 25 free spins no deposit casino bonuses. Of those I've seen recently, I know that 888casino has a free spins offer where you get 10 spins on slot game Holy Mackerel Extreme Fishing every month for no deposit and no wagering. As 888 say, 'You keep what you catch'.

New Slot Promo Offers

Some casinos promote special offers when new slot games are released. It gives players the chance to play real money slots for free.

The offers vary, but they typically include prizes like extra spins, tech gadgets, holidays, cars, and entry into lucrative slots tournaments.

Reload Bonuses

These offers are for existing players once they have made their initial deposit and usually claimed the welcome offer that goes along with this. Casinos will offer a bonus on a player's 2nd, 3rd, 4th and even up to 5th deposit at that casino.

Cashback

A cashback offer is where the casino site refunds a percentage of your losing bets or deposit from a certain day, weekend, week or month. You might need to hunt for these but they can be found, especially at newer casinos that might work harder to keep you.

Loyalty/VIP Bonuses

Many online casino sites have loyalty programmes with lucrative prizes up for grabs like holidays and cars.

A good loyalty programme will allow you to earn loyalty points whenever you bet. The more games you play, the more points you earn.

With loyalty points, you can progress to the next member level, which can give you reduced wagering contributions on bonuses, a personal account manager, and more cashback every week.

Mobile Slot Bonuses

The success and accessibility of mobile casinos in the UK and the similarity between mobile apps and desktop casinos means that mobile-only offers are now rare.

That being said, itā€™s worth noting most casinos allow you to clear a bonus by betting on mobile via your browser or their app, on Android or iOS. The only issue is that not all games on desktop are also available on mobile just yet.

Many casino sites have produced casino apps where you can play for real money, so they are worth downloading if you want to play away from home.

Bonus Buy Slots

Who doesn't love slots bonus rounds? Bonus buys slots give you the opportunity to pay in order to trigger bonus rounds in certain slot games. Unfortunately this cannot be done in the UK anymore, after the UK Gambling commission banned this featured in 2019. We introduce you to alternatives that you can play and enjoy in the UK. 

What is a No Wagering Slots Welcome Bonus?

They're hard to find but you can get no wagering slots welcome bonuses. For example, when you join a casino you might get a deposit bonus of extra spins or even cash after your first deposit. Then you get to use that bonus to hopefully win more money. 

With this bonus type, if you win more cash, you can withdraw it without having to play through it 20 or more times.

Currently, one of the best slots welcome bonuses with no wagering is Kwiff Casino's 200 no wagering free spins bonus. You just have to sign up, make your first deposit, wager at least Ā£20 on slots, and then you'll get 40 extra spins on the slot Rich Wilde and the Book of Dead. Whatever you win with those spins, up to Ā£250, you get to keep. What's great is you get 40 extra spins every time you bet Ā£20 on slots during your first five days as a member.

What's more, MagicRed has another slots welcome bonus with no wagering required, where you get a 100% up to Ā£100 match deposit bonus plus 20 extra spins. And there's no wagering on any wins you make with those extra spins. Get that offer below:

MagicRed Bonus 100% Welcome Bonus Up To Ā£100 + 20 Wager Free Spins
#ad. 18+. Gamble Responsibly. GambleAware.org. New Customers Only. T&Cs apply. Min. deposit: Ā£20. Max. bonus: Ā£100 + 20 Bonus Spins on Big Bass Bonanza. Offer valid on the first deposit. Winnings won with bonus spins that require a deposit have no wagering requirements. The match-up bonus that requires a deposit must be wagered 40x.

Deposit Bonus Slots

Some slot games like Rich Wilde and the Book of Dead and Big Bass Bonanza feature in lots of slots deposit bonuses. There's no single reason for this but these are factors:

  • These slots are famous and their names attract new bettors
  • These slots usually have an average RTP and some are highly volatile, which means on average, players won't win a fortune from the bonus, which protects the casino from huge losses. Progressive jackpot slots are usually excluded from slots bonuses for this reason.

Popular Deposit Bonus Slots

These are some of the slots we usually see in slot welcome offers and existing players rewards:

  • Rich Wilde and the Book of Dead
  • Big Bass Bonanza
  • Starburst
  • Fishin' Frenzy
  • Big Irish Bucks
  • Eye of Horus

All these slots have an RTP around 96% or lower, which means for every Ā£100 bet, the average player will get Ā£96 back. Of course, you can win much more than 96% or lose more than 4%. Your maximum win potential also depends on any bonus limits. It's important to remember free spins and other deposit bonuses are simply that thoughā€”bonusesā€”so it's best to treat them as a nice added extra.

With thousands of slot games to choose from, it can be difficult to know where to start. To help, we've put together the following list of the most popular slot games in the UK right now. These games are frequently eligible for bonuses, but always read the small print to be sure.

The 10 Most Popular Online Slots

Starburst Game Logo
Software Provider NetEnt Logo
RTP 96.09%
Volatility Low
Maximum win Ā£50,000.00
Book of Dead Game Logo
Software Provider Play'n GO Logo
RTP 96.21%
Volatility High
Maximum win Ā£500,000.00
Sweet Bonanza Game Logo
Software Provider Pragmatic Play Logo
RTP 96.48%
Volatility Medium
Maximum win Ā£2,110,000.00
Gonzoā€™s Quest Game Logo
Software Provider NetEnt Logo
RTP 95.97%
Volatility Medium
Maximum win Ā£125,000.00
Big Bass Bonanza Game Logo
Software Provider Pragmatic Play Logo
RTP 96.71%
Volatility High
Maximum win Ā£525,000.00
Legacy of Dead Game Logo
Software Provider Play'n GO Logo
RTP 96.58%
Volatility High
Maximum win Ā£500,000.00
Gates of Olympus Game Logo
Software Provider Pragmatic Play Logo
RTP 96.50%
Volatility High
Maximum win Ā£500,000.00
Eye of Horus Game Logo
Software Provider Merkur Logo
RTP 96.31%
Volatility Medium
Maximum win Ā£50,000.00
Fire Joker Game Logo
Software Provider Play'n GO Logo
RTP 96.15%
Volatility Medium
Maximum win Ā£80,000.00
Bonanza Game Logo
Software Provider Big Time Gaming Logo
RTP 95.98%
Volatility High
Maximum win Ā£240,000.00

How We Review the Best Slots Bonuses in the UK

Here at Casinos.com we do things a little differently. In fact, one of the reasons that we launched our site is to change the way casinos are reviewed. We donā€™t want to throw up a generic review and instead, we want to go deeper and be more genuine than other casino review sites.

Our Team of Experts

To do this, weā€™ve created a dedicated team for each aspect of online casino. This team is set up to find every great online slots bonus, and explain how each works and compares to the rest.

Our team includes professional casino players, game developers and casino writers. The team can cover reviews in greater detail than a one-man-band.

With each review, thereā€™s a basic guideline our team follows, however, itā€™s not set in stone. And new slot sites pop up all the time, so we try to test all the best new online casinos when they hit the market.

Assessing Bonuses

The first port of call is the bonus and the amount of money on offer. ā€˜The bigger the betterā€™ is a common misconception as wagering requirements also play a part. Working through wagering can be challenging so we make sure all the terms and conditions set out by the casino are explained clearly.

Wagering contributions include the amount needed to clear the bonus for withdrawal, the time limit on the bonus, games included, and the maximum bet allowed with bonus money.

Evaluating What Each Casino Has to Offer

Once the bonus is reviewed, we move onto the wider casino and the number and quality of slot games. This includes the number of mobile slots online that are accessible, since many of you love playing slots on-the-go.

Itā€™s worth noting that lots of casinos use the same game providers and have many of the same slots, so we give extra points for an original range of great slots. We also love it when a casino offers progressive jackpot slots and a healthy selection of Megaways slots.

Banking and customer support options are key to our reviewers too, as these can make or break your experience. The website might have the best games and bonuses in the world, but if you canā€™t get money in and out, itā€™s pointless.

We test bonuses and casinos every day, so check this page later in case we find even better slot bonuses.

Terms and Conditions: What are Wagering Requirements for Slots Bonuses?

The main concept behind wagering requirements is to make sure players donā€™t simply take the bonus money and run.

A typical offer would be based on 30x your bonus, meaning a Ā£100 bonus would need Ā£3,000 worth of wagers to clear that bonus (30 x Ā£100). 

If you can win and bet Ā£3,000 using the initial Ā£100 bonus money, then youā€™ll be able to withdraw anything else as cash. The bonus money doesnā€™t become real money until you reach this point.

Exclusions

Bear in mind that some games will be excluded from wagering ā€” usually, live casino games like blackjack arenā€™t included or they only count 10%. On the other hand, casino slots usually count 100% to wagering, although some slots are excluded.

Whatā€™s more, some payment methods can't be used to deposit and claim bonuses, and you generally have to withdraw funds with the same payment method you used to deposit with. You should also remember that most online slots bonus funds expire after a certain number of days.

Is There a Limit on How Much You Can Deposit at a Slot Site?

Yes, while many casino websites offer you the best casino payment methods, you should know each has its own deposit and withdrawal limits, and withdrawal times.

Generally, debit cards and bank transfers offer the highest deposit limits, with e-wallets and prepaid cards being lower.

Do All Slots Bonuses Require a Promo Code?

Very few bonuses come with a casino promo code these days but some still do. Just remember to keep an eye out for a bonus code, so you donā€™t miss out.

You need to enter the bonus code before making your first deposit or at the time of doing so. You wonā€™t be able to go back and add one if you forget.

Wagering Calculator

If youā€™re still confused about wagering requirements, you can try our wagering calculator (which opens in a new window when you click the image below)! This makes it easy to understand how much money you need to bet through before you can withdraw your bonus. Just type in your deposit amount, the bonus percentage on offer, e.g. 200%, the wagering requirement, and how much the game, e.g. slots or blackjack, contributes to the bonus, and you'll see how much you need to bet using your bonus money.

Wagering Calculator

Licensing Authorities & Testing Agencies

Meet The Author

16 Years
Experience
James Briscoe
James Briscoe
Editor Editor

James began working in the online casino industry in Malta as a copywriter, before writing about casinos and esports betting for new sites and affiliate companies. He then wrote casino reviews for Gambling.com before joining Casinos.com full-time and has been part of the team since. James loves making articles to help players like you.

Read Full Bio

FAQs

Can I use slot bonuses on other online casino games?
Are slot bonuses available on mobile apps?
Are progressive jackpot slots eligible for slots bonuses?
What are bonus rounds in slot games?
Where do I find slot tournaments and promotions?
Are there bonuses for new, just launched slot games?
Do new slot sites in the UK have better bonuses?
Are there no deposit slot bonuses online?
Can you buy a bonus on slots in the UK?

Ask the experts

Need expert help? Ask a question and one of our in-house experts will get back to you...

Get in touch
Get in touch
faqs

Test Your Luck
Not Your Spam Filter

Sign up to receive emails and promotions from Casinos.com

Casinos.com Email Signup Coins