Best UK Slot Welcome Bonuses

Hey there! So, you've heard about these slot bonuses, right? They're pretty cool because they let you try out online slot games without spending loads of your own cash. Plus, if you're lucky, you might even pocket some winnings. Let's dive into what you need to know to find the perfect one for you.

Top Slot Bonuses

Casino
Play OJO
Wager
0x
Bonus

80 Wager Free Spins

This offer is only available for first time depositors. Min deposit is £10. 50 Free Spins on Book of Dead. Spin Value: £0.10. After your first deposit you may claim your 30 Extra Free Spins by visiting the Kicker Section. The Prize Twister awards a random prize of either cash or free spins. For Free Spins the general free spins terms apply. No min withdrawal. 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.

Wager
35x
Bonus

100% Up to £200 + 11 Free Spins

18+ New Players only! The Welcome Bonus is only available to newly registered players who make a minimum initial deposit of £ 10. Wagering 35x. T&C Apply

Wager
35x
Bonus

100% Up to £100 + 10% Cashback

New customers only, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. 18+ Please Gamble Responsibly. Click ‘Get Bonus’ to view the full terms and conditions.

Casino
21Casino
Wager
35x
Bonus

121% up to £100

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

Wager
35x
Bonus

100% Up To £100 + 100 Free Spins

Terms & Conditions apply. New players only. 18+. Min Deposit £10. Wagering requirement apply 35x. Offer valid for 72h `£100 bonus/100 spins includes 3 deposit.

Casino
Mr Vegas
Wager
35x
Bonus

100% up to £200 + 11 Free Spins

18+, UK residents. New players only. Min deposit £10. 30 days to claim bonus. 35x wagering within 60 days. Max bet £20 or 20% of balance. T&Cs apply.

Wager
30x
Bonus

100% up to £50 + 50 Free Spins

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Max. Bonus £50. Maximum amount of Free Spins is 50. Game: Book of Dead, Spin Value: £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 £0.10) of the free spin winnings and bonus amount or £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.

Wager
45x
Bonus

100% up to £100 + 10% Cashback

18+ New players only, min deposit £10, wagering 45x, max bet £5 with bonus funds, 100% up to £100 bonus on 1st deposit, 50% up to £200 on 2nd deposit. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Full T&C’s apply T&Cs Apply

Wager
50x
Bonus

100% up to £100 + 10% Cashback

18+ New players only, min deposit £10, wagering 45x, max bet £5 with bonus funds, 100% up to £100 bonus on 1st deposit, 50% up to £200 on 2nd deposit. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Full T&C’s apply T&Cs Apply.

Wager
40x
Bonus

100% up to £100 Welcome Bonus

New customers only, 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. Full T&C’s apply. +18, Please Gamble responsible. BeGambleAware.org. T&C Apply

Casino
Mr Rex
Wager
30x
Bonus

100% up to £200 + 100 Free Spins on Starburst

SIGN-UP Terms and Conditions apply. New players only. 18+. Min deposit £10 The wagering requirement is 30x. The offered spins are valid for 24hr on Starburst. Free spins issued over 3 days. Min deposit 1st day £10, 2nd & 3rd day £20. T&C Apply

Wager
35x
Bonus

100% up to £50 + Free Spins

Terms and Conditions apply. New players only. 18+. Minimum deposit £20. Wagering requirement 35x. Offer valid for 72h

Wager
60x
Bonus

100% up to £50 + 50 Free Spins

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 60x Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Bonus must be claimed before usage of deposited funds. Bonuses do not prevent withdrawing deposit balance. Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. T&C’s Apply, BeGambleAware 18+

Casino
WildSlots
Wager
35x
Bonus

100% up to £50 + 50 Free Spins

Terms and Conditions apply. New players only. 18+. Minimum deposit £20. Wagering requirement 35x. Offer valid for 72h

Wager
35x
Bonus

100% up to £50 + 50 Free Spins

Terms and Conditions apply. New players only. 18+. Minimum deposit £20. Wagering requirement 35x. Offer valid for 72h

Wager
60x
Bonus

100% up to £50 + 50 Free Spins

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 60x Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Bonus must be claimed before usage of deposited funds. Bonuses do not prevent withdrawing deposit balance. Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. T&C’s Apply, BeGambleAware 18+

Casino
Betmorph
Wager
50x
Bonus

100% up to £200 + 50 Bonus Spins

New players only, no deposit required, valid debit card verification required, 65x wagering requirements, max bonus conversion to real funds equal to £50, T&Cs apply

Casino
Tebwin
Wager
50x
Bonus

100% up to £200 + 50 Bonus Spins

New players only, no deposit required, valid debit card verification required, 65x wagering requirements, max bonus conversion to real funds equal to £50, T&Cs apply

Casino
777Tigers
Wager
50x
Bonus

100% up to £100 + 10 Bonus Spins

18+, New Customers Only, Play Responsibly, T&C Apply.

Wager
50x
Bonus

100% up to £100 + 50 Free Spins on Fire Joker

New Players Only. 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 / Free spins valid 7 days from receipt. Max conversion: 3 times the bonus amount or from free spins: €20. Withdrawal requests void all active/pending bonuses. Full Terms apply

Casino
SpinGenie
Wager
0x
Bonus

100% up to €100 + 50 Free Spins on Fire Joker

New Players Only. 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 / Free spins valid 7 days from receipt. Max conversion: 3 times the bonus amount or from free spins: €20. Withdrawal requests void all active/pending bonuses. Full Terms apply

Wager
60x
Bonus

100% up to £50 + 50 Free Spins

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 60x Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Bonus must be claimed before usage of deposited funds. Bonuses do not prevent withdrawing deposit balance. Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. T&C’s Apply, BeGambleAware 18+

Casino
Lord Ping
Wager
60x
Bonus

100% up to £50 + 50 Free Spins

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 60x Bonus amount (Slots count 100% and any other game 10%) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Bonus must be claimed before usage of deposited funds. Bonuses do not prevent withdrawing deposit balance. Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. T&C’s Apply, BeGambleAware 18+

Casino
Kwiff
Wager
0x
Bonus

Wager £20 for 5 Days and Get 200 Free Spins

Grab up to 200 Free Spins on Book of Dead! Wager £20 on slots and Get 40 Free Spins for five consecutive days. 18+ new customers only. £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. Full T&Cs apply

Casino
NetBet
Wager
40x
Bonus

Up to 500 Free Spins

New players, £10+ deposit, no e-wallets/prepaid cards, up to 500 free spins, 40x wagering on free spins winnings, Terms apply

Wager
35x
Bonus

Welcome Offer up to £66 + 66 Extra Spis

18+. New players only. Min deposit £20. Max bonus 100% up to £66 on 1st deposit. 66 spins on Big Bass Bonanza on 2nd deposit. 35x wagering applies, within 21 days. Max wins from spins £100. Spins expire after 24 hours. Full T&Cs Apply.

Casino
Playgrand
Wager
35x
Bonus

100% up to £100 + 30 Bonus Spins

18+. New players only. Min deposit £10. 100% up to £100 + 30 Bonus Spins on Reactoonz. Bonus funds + spin winnings 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

Wager
65x
Bonus

500 Spins on Starburst

New players only, £10 min fund, 65x bonus wagering requirements, max bonus conversion to real funds equal to lifetime deposits (up to £250) full T&Cs apply

Wager
65x
Bonus

5x Free No Deposit Spins on Aztec Gems

New players only, no deposit required, valid debit card verification required, 65x wagering requirements, max bonus conversion to real funds equal to £50, T&Cs apply.

Casino
PlayZee
Wager
35x
Bonus

100% Up to £300 + 100 Zee Spins on Starburst

18+ New players only. Min Dep £20. Max Bonus Bet £5. Offer: 100% of 1st deposit up to £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 they’re credited. Winnings from each 10 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. Affordability checks apply. Full Terms Apply Play Responsibly. BeGambleAware.org

Wager
30x
Bonus

100% Up To £50 + 50 Free Spins

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Max. Bonus £50. Maximum amount of Free Spins is 50. Game: Book of Dead, Spin Value: £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 £0.10) of the free spin winnings and bonus amount or £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.

Casino
Slotstars
Wager
30x
Bonus

100% Up To £50 + Free Spins

Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Max. Bonus £50. Maximum amount of Free Spins is 50. Game: Book of Dead, Spin Value: £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 £0.10) of the free spin winnings and bonus amount or £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. *Games are subject to availability. Bonus Policy applies.

Finding the Best Slot Bonuses

Okay, so first things first, finding a site with slot bonuses isn't too tough. Since slots are super popular, loads of sites offer these bonuses. But here's the kicker – there are so many types of bonuses out there! Maybe you're all about those free spins on a game you love, or perhaps you fancy a little boost to your slot-playing funds without having to fork out a fortune. Whatever floats your boat, just make sure you're playing on a site that's legit and safe.

Now, before you get too excited, always, and I mean always, check out the terms and conditions of each bonus. This stuff is important! You wanna look out for things like wagering requirements – that's basically how many times you gotta play through your bonus cash before you can cash out any winnings. Also, double-check if your favorite game is eligible for the bonus – you don't wanna miss out on the fun!

What We Look for in a Slot Bonus

Alright, let's talk about the experts – that's us! At, we've got a bunch of seasoned pros who know their stuff when it comes to slot bonuses. We don't just look at the flashy numbers they throw at you; we dig deep into the nitty-gritty details. We're talking about stuff like the terms and conditions, the wagering requirements, which games you can play with the bonus, and if there are any other sweet deals on offer.

Types of Slot Bonuses

Now, onto the fun part – the types of slot bonuses you can snag. There's a whole bunch of them:

  • Welcome Bonus: This one's for the newbies – it's like a warm welcome to the casino world, complete with free spins or extra cash to play with.
  • Free Spins: Who doesn't love free stuff? With this bonus, you get a set number of spins on certain games without spending a penny.
  • Deposit Bonus: You put some money in, and the casino matches a chunk of it with bonus cash – it's like getting free money!
  • No Deposit Bonus: Yep, you read that right – you get a bonus without having to put any of your own money down. Sweet deal, right?
  • Reload Bonus: This one's for the regulars – you top up your account, and the casino throws in a little extra as a thank you.
  • Cashback: You get some of your losses back as bonus cash – it softens the blow of a bad streak.

Slot Bonus Terms and Conditions

Now, let's chat about the fine print – the terms and conditions. Listen up, because this stuff is crucial! Every bonus comes with some rules you have to follow. We're talking about things like wagering requirements, game exclusions, payment method restrictions, minimum deposits, maximum bonus limits, and time limits. It might sound like a lot, but trust me, it's worth knowing.

Which Slots Are Best for Slot Bonuses

Last but not least, let's talk about the games! Most online casinos let you use your bonuses on loads of different slots, but some might not count towards meeting the requirements. Here are a few fan favorites:

  • Starburst: It's a classic with loads of chances to win big. Set in a cosmic world, it's got a 5x5 grid and an RTP of 96.09%. You can win up to 50,000x your bet with a lucky spin!
  • Fishin' Frenzy Megaways: This one's perfect for those who love a fishing-themed adventure. With a maximum of 15,625 paylines, you're in for a wild ride. Land a scatter fisherman symbol and reel in those fish for big wins!
  • Buffalo Blitz II: Sequels are rarely as good as the original, but this one might just prove you wrong. With better graphics and cool features, it's worth a spin or two. It's got an RTP of 96.96% and 4096 paylines, so there's plenty of chances to win big.