Online Slots Bonus Guide 2021: UK Promotions for Slot Games

Looking for the best slots bonus to play with? This is the site for you, then!In the following article you will learn everything about the top online slots bonus offers in the UK:

The Best Slots Bonus Offers for UK Players

✅ Slots Casino 🎁 Slots Bonus 💳 Min. Deposit ⭐ Rating
Casino.com Up to £100 + 10% Cashback £20 5.0/5
BGO Up to 500 Free Spins Each Worth 50p £10 4.9/5
Casimba Up to £500 + 50 Bonus Spins £20 4.8/5
Betway Up to £50 Welcome Bonus £20 4.7/5
Fun Casino Up to £123 + 10% Cashback £10 4.6/5
NetBet Up to 500 Free Spins On 1st Deposit £10 4.6/5
Gala Casino £40 + 20 Free Spins £10 4.6/5
The Grand Ivy Up to £1500 + 100 Bonus Spins £20 4.5/5
Playzee Casino Up to £300 + 100 Zee Spins £20 4.5/5
PlayOJO 50 Free Spins £10 4.5/5

The Top 10 Online Slots Bonus Offers in the UK for 2021

  • 🥇 Casino.com ✪ Up to £100 + 10% Cashback (Best Online Slots Bonus in the United Kingdom)
  • 🥈 BGO ✪ Up to 500 Free Spins Each Worth 50p (Recommended Slots Site for Free Spins Bonus)
  • 🥉 Casimba ✪ Up to £500 + 50 Bonus Spins (One of the Top Sign Up Casino Promotion for UK Players Among Casino Sites)
  • 🏅 Betway ✪ Up to £50 Welcome Bonus (Among the Top Slot Casinos for Offers and Payment Methods Variety)
  • 🏅 Fun Casino ✪ Up to £123 + 10% Cashback (One of the Best Slots Bonus Offers and Great Games Selection)
  • 🏅 NetBet ✪ Up to 500 Free Spins On 1st Deposit (Top Choice for Game Diversity and Various Slots Bonuses)
  • 🏅 Gala Casino ✪ £40 + 20 Free Spins (Trusted UK Casino Site with Reliable Deposit Methods and Good Promotions)
  • 🏅 The Grand Ivy ✪ Up to £1500 + 100 Bonus Spins (Best Slots Welcome Bonus Offer in the UK)
  • 🏅 Playzee Casino ✪ Up to £300 + 100 Zee Spins (Excellent Site with Great Customer Support and Nice Slots Bonus UK)
  • 🏅 PlayOJO ✪ 50 Free Spins (Superb Online Casino with Good No Deposit Offers for Regular Players)
Greetings to the United States!Check Out the Best Online Slots Bonuses for July, 2021
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Last Updated on 28 Jun 2021 by Chief Editor Aidan Howe

The Best Slots Bonuses in the United Kingdom for 2021

Slot Casino Slots Bonus Playthrough Validity Min. Deposit Bonus Rating Secure Link
Up to £100 + 10% Cashback 40x Bonus Amount 30 Days £20
5.00 ★ out of 5
casino.com Full T&Cs apply. New customers. 20 Spins for selected AOTG slots credited on reg, 180 (20 per day) following first deposit. Spins valid for 24 hours, exp in 30 days. Winnings credited as bonus funds with 20x wagering, max win £100. Min £20 dep for bonus funds. 40x wagering, game weighting/restrictions, betting limits. Casino-only bonus. Not Available on iOS app. Payment restrictions.
Up to 500 Free Spins Each Worth 50p 65x on Winnings 24 Hours £10
4.90 ★ out of 5
bgo.com Full T&Cs apply. 18+. *UK only. Win up to 500 spins from Mega Wheel on 1st deposit. 24-hour expiry. Max bet £2.50, Max Spins win £8 per 10 spins, Max Bonus win £150, selected games & 65x wagering on winnings. Min deposit £10. No Neteller/Skrill.
Up to £500 + 50 Bonus Spins 35x Bonus + Deposit 30 Days £20
4.80 ★ out of 5
casimba.com Full T&Cs apply. 18+. New Players Only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £500 + 50 bonus spins on your 1st deposit, 25% match up to £1000 + 50 bonus spins on your 2nd deposit, and 50% match up to £500 + 25 bonus spins on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Please gamble responsibly. BeGambleAware.org.
Up to £50 Welcome Bonus 50x Bonus + Deposit 7 Days £20
4.70 ★ out of 5
betway.com Full T&Cs apply. United Kingdom - *New customers only. Opt-in required. 100% Match Bonus up to £50 on 1st deposit of £10+. 50x bonus wagering applies as do weighting requirements. Debit Card & PayPal deposits only. This offer is valid for 7 days from your new account being registered. Irregular gameplay may invalidate your bonus.
Up to £123 + 10% Cashback 50x Bonus + Deposit 30 Days £10
4.60 ★ out of 5
funcasino.com Full T&Cs apply. 18+. New players only - 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 - Cashback is cash, so no wagering - Cashback applies to deposit where no bonus is included.
Up to 500 Free Spins On 1st Deposit 30x Bonus 30 Days £10
4.60 ★ out of 5
netbet.co.uk Full T&Cs apply. 18+. *New players, £10+ deposit, no e-wallets/prepaid cards, 50x wagering on Vegas Free Spins, 40x wagering on Casino Free Spins.
£40 + 20 Free Spins 30x Bonus 14 Days £10
4.60 ★ out of 5
galacasino.com Full T&Cs apply. 18+. New customers only. Deposit/spend £20, get £40 bonus + 20 Free Spins. 35x Wag on Bonus. 10x Wag on Free Spins winnings. Free Spins valid on selected games. 7 days to claim, 7 days to wager. Restrictions.
Up to £1500 + 100 Bonus Spins 35x 30 Days £20
4.50 ★ out of 5
grandivy.com Full T&Cs apply. 18+. New players only. One bonus offer per player. Minimum deposit £20. Max bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £300 on your 1st deposit, 25% match up to £800 on your 2nd deposit, and 50% match up to £400 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements.
Up to £300 + 100 Zee Spins 35x Bonus 30 Days £20
4.50 ★ out of 5
playzee.com Full T&Cs apply. 18+. New players only. Min Deposit £20. Max Bonus Bet £5. Winnings from spins capped at £50. 100 Zee Spins valid on Starburst (first 10 credited immediately upon first deposit; rest credited at 07:00 GMT at 10/day). Spins must be used by 23:59 GMT of the day on which they are credited to player account, any unused shall be removed. Bonus funds must be used within 30 days. Bonus funds are separate to Cash funds, and subject to 35x wagering (bonus + cash). Full terms apply. BeGambleAware.org
50 Free Spins 0x Wagering Unlimited £10
4.50 ★ out of 5
playojo.com Full T&Cs apply. 18+. First deposit only. 50 Free Spins on the Book of Dead slot. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. OJO’s Rewards and Game Play policy applies.

The offers you see in the table above are in accordance with the best casino sites in the UK, which are all fully licensed and regulated by the UKGC. Obviously, there are plenty of highly attractive welcome bonus offers for playing slots online, but most of these deposit bonuses can be also used on other casino games. Nevertheless, the following article is dedicated to the best slots bonus offers that you can find online, so we will focus our attention on this topic. Casino UK players are surely spoiled with choice when it comes to online slots bonus offers and can make the most of various deposit bonuses, excellent promo code bonuses, bonus rounds, and even some free spins on Starburst, which is one of the most popular slot game worldwide. So, without further ado, lets dive into the following best online slots bonus guide and look at the best deposit bonus slots together!

⭐ Best Slots Bonus Casino.com
🎁 Slots Bonus Code Casimba
🆕 New Online Slots Bonus Gala Casino
✅ Slots Welcome Bonus The Grand Ivy
📱 Mobile Slots Promotion Betway
⛔ No Deposit Slots Bonus 888casino
🎰 Free Spins Slots Bonus NetBet
⛔ No Wagering Slots Bonus PlayOJO
🌟 Starburst Slots Bonus Playzee
🌈 Rainbow Riches Slots Bonus Fun Casino

Even though the following article will concentrate on the best slots bonus offers at online casinos for UK players, we have to say a few words about the operators first. First of all, each of the recommended UK casino sites that you will see on this page is absolutely safe to play at. All of our recommendations are certified gambling sites, licensed by the United Kingdom Gambling Commission under account numbers that you can check and verify for yourself. Having such a licence guarantees the fairness of the casino games and the randomness of the results and bonus wins.

Furthermore, playing at online casino sites regulated in Great Britain by the Gambling Commission means that you will have access to the best real money casino games and the most attractive welcome bonus offers and regular casino bonuses. You can be certain that the T&C of the top online casinos slots bonus offers are fair, and there’s nothing left hidden in the back.

Of course, it is always recommendable to read the full terms and conditions before signing up for an online slots bonus, as many different terms apply. You should also pay attention if a promo code is required in order to claim a bonus, as well as if there are any extra spins, bonus rounds or extra bonus winnings that you can claim after a certain stage of the bonus. If you want to be certain that a small investment will make you eligible for a bonus, try one of the online casino minimum deposit 5 sites.

The most important requirements that you should be aware of are the playthrough requirements and wagering contributions, the qualifying deposit methods, the minimum deposit required and the validity of the promotion. As the range of slots at most online gambling sites is truly massive, some bonuses concentrate on some of the most popular casino slots, while the less-appealing titles don’t have the same weight for the wagering contributions. Games like Rainbow Riches, Gonzo’s Quest or Starburst are among the most commonly seen casino game titles that fully contribute and can be played with the deposit bonus offers.

Types of Slots Bonus

There are actually many different types of slots bonuses available to UK players. They can differ by wagering requirements, game contributions, types of qualifying deposit, and more. Some can be claimed only by new UK players, while others can be played only at a mobile slots casino or claimed only by a referred player. In any case, the best slots bonus offers can be extremely beneficial, as they can give a mighty boost to your bankroll or reward you with a nice portion of extra spins. This way, you can play slots with bigger wagers, enjoy a wide range of bonus features and gain real money bonus winnings in a simple and exciting way.

Best Slots Deposit Bonus Offer for 2021

Well, obviously, the slots deposit bonus offer is the most famous and widely spread promotion out there. Deposit bonuses have such popularity due to their specific terms and conditions that require the player to make a real money deposit. Depending on the sum of the deposit slot bonus amount, UK players can claim a bonus that normally starts from £10 and goes all the way up to £1500 (and even more). This is actually called a deposit match bonus. Deposit bonuses can also give you some extra spins on top of the bonus amount and can be played on a wide range of slots online.

Up to £1500 + 100 Bonus Spins
  • Safe And Trusted Operator
  • Favourable Wagering
  • Wide Range of Slots
Full T&Cs apply. 18+. New players only. One bonus offer per player. Minimum deposit £20. Max bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £300 on your 1st deposit, 25% match up to £800 on your 2nd deposit, and 50% match up to £400 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements.

Usually, welcome bonus offers are deposit bonuses, as the online casino wants you to share certain bank information from the very beginning. That’s why there’s a deposit required, and new UK players must transfer real cash into the casinos’ cashier in order to claim the deposit slots bonus and enjoy the bonus games and bonus winnings. First time UK players are usually a bit sceptical and cautious at the beginning and prefer to delay their first deposit as long as they can. That’s why a good and attractive deposit bonus makes them more inclined to agree and transfer real funds into their accounts. And usually, the bigger the sum, the bigger the deposit slots bonus and the number of extra spins.

No Deposit Slots Bonus Offers

Free no deposit bonuses are another popular way to attract new UK players. This type of offer does not require any deposits, and the bonus funds and any additional extra spins can be claimed as soon as the players make a registration. Free no deposit bonuses don’t necessarily mean that they are only for new UK players. Some online casinos have many ongoing promotions and allow regular customers to play slots and take advantage of free no deposit bonus offers. Usually, such regular promotions reward UK players with some extra spins on a particular day of the week for some of the most popular and best slot casino game options, such as Rainbow Riches, for example. Here are some of the best free no deposit bonus offers for UK players.

Caption goes here
Slots Casino No Deposit Slots Bonus Wagering Requirements Validity Top Highlights Rating Secure Link
£100 + £88 Free Play 30x 90 Days
  • Respected Casino
  • Great Variety
  • Top Bonus Slots
5.00 ★ out of 5
888casino.com Full T&Cs apply. 18+ No Deposit Offer : New players only • £88 is granted in FreePlay (FP) • FP must be claimed within 48 hrs of receiving the email and expires after 14 days • FP wins are credited as bonus and capped at £15, exc. JP win • Deposit Bonus Offer: £20 min deposit • 100% up to £100 Bonus • Bonus wins are capped at £500 • To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days • Restrictions apply to deposit until wagering requirement fulfilled • Wagering req. vary by game • This offer may not be combined with any other offer • Withdrawal restrictions: No Deposit Offer terms & Deposit Bonus Offer terms.
£20 + 20 Bonus Spins 40x 7 Days
  • Mobile Slots
  • Juicy Bonuses
  • Live Chat
4.95 ★ out of 5
casino2020.co.uk Full T&C apply. 18+. New players only. Up to 400(18p) free spins on first deposit, awarded over 20 days. Expires 00:00 daily. Locked to Cleopatra’s Prizes. Up to £300 deposit match. Min deposits £10. Dep1: up to 100%, Max £100. Dep2: up to 200%, Max £200. Bonus and FS winnings subject to 40x wagering requirement. Withdrawing qualifying deposit excludes player from promotion.
£200 + 77 Free Spins 50x/20x 14 Days/21 Days
  • Proven Brand
  • UKGC Licensed
  • Mobile Slots
4.90 ★ out of 5
777.com Full T&Cs apply. 18+ • No Deposit Offer: New players only • Claim within 48 hrs • 14 day expiry • FreePlay (FP) wins credited as bonus & capped at $10, excl. JP wins • Pre-1st deposit only: Bonus wins & max redeemable amount capped at $100, excl. JP wins • 50x wagering – req. vary by game • Bonus expires in 90 days • Deposit Offer: Promocode:TUKC • 1st deposit only of £20 min • Bonus granted once deposit is wagered 20x • Bonus expires in 21 days • Both: Bonus wins capped at £$500, excl. JP wins • Bonus & FP valid for selected games • Payment method & country restrictions apply • Withdrawal restrictions & No Deposit Offer terms & Deposit Bonus Offer terms apply.
£10 Free No Deposit Needed 20x 7 Days
  • Top Casino
  • Slick Design
  • Live Casino
4.85 ★ out of 5
mfortune.co.uk Full T&Cs apply. 18+. New players only. Up to 10 (20p) free spins on Super Win 7s for 10 days. Winnings paid as bonus credit. Expire 00:00 every day. Max withdrawal from free spins bonus winnings £50. Up to 200% deposit match of first deposit (Min £10). Max £100 awarded as bonus credit. 20x wagering on bonus credit. Withdrawing Unspent Qualifying Deposit will exclude the player from these promotions.

But as you can probably guess, free no deposit bonus offers are not the favourite type of promotions for casino operators. Sure, new UK players gladly claim and take advantage of such slots bonuses, but it is rare to see an online casino that solely relies on this type of offers. Additionally, experienced UK players prefer deposit match bonuses that will reward them with bonus funds instead of just some extra spins. Of course, certain terms apply to free no deposit bonus offers as well. Normally, the amounts you can withdraw from offers that don’t require a deposit are not very big.

Best Slots No Wagering Bonus for UK Players

As we already discussed the two most popular types of slots bonuses – the deposit slots bonus and the free no deposit bonus, it is time to say a few words about the third most famous type of slots online offer. We’re talking about the no wagering bonus for casino UK players. As we already mentioned, all bonuses come with certain conditions. You should always pay attention to what terms apply to the offer – when do the bonus expires, what are the wagering conditions and what are the bonus casino games that you can use the bonus funds or extra spins on. But when you claim a no wagering slots bonus, at least you have to worry about one thing less. Below you can see our top recommended no wagering bonus casino offer:

50 Free Spins
  • Safe and Licensed Site
  • Great Customer Support
  • Many Top Mobile Slots
Full T&Cs apply. 18+. First deposit only. 50 Free Spins on the Book of Dead slot. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. OJO’s Rewards and Game Play policy applies.

No wagering deposit bonuses normally reward new UK players with a small amount of bonus funds or a particular number of extra spins. Players can normally use these funds on new slots or can use the extra spins on a certain casino game – free spins on Starburst, for example. The no wagering feature of the bonus means that any bonus wins gained can be directly withdrawn without the need of fulfilling certain playthrough requirements. Such offers are mostly preferred by new UK players who are experiencing online gambling for the first time.

How to Pick a Slot Offer – All You Need to Know!

When it comes to choosing the best online slots bonus in the UK, people often get it wrong. Because gambling is all about large numbers and shiny banners, people can often be bewitched by offers, which appear as they are out of this world. But always remember – if it is too good to be true, it usually is! Therefore, you should always check what conditions and terms apply to bonuses and never make a rash decision based solely on the banner. You should calculate how much value you get for your money or effort. Receiving a huge bonus amount and numerous extra spins have no point if there is a large wagering requirement to fulfil for a short amount of time. In the following paragraph, we will have a more detailed look at the online slots welcome bonus terms and what to look for.

How to Pick a Slots Bonus?
  • Check the Wagering Requirements – Always make sure you’re familiar with the wagering conditions of a slots online bonus and be certain that you can fulfil them. It is recommendable to alywas read the full terms and conditions.
  • Check the Range of Slots – Pay attention to the listed casino games that you can use the bonus on Normally, some casino UK slots that provide a higher chance to win are excluded from the offers.
  • Look for a Promo Code – Some slots online bonuses require new slots UK players to enter a certain promo code. If the code has not been entered prior the deposit you won’t be able to take advantage of the deposit bonuses.

Fair Bonus Terms

Finding a slots bonus in the UK is not an easy quest! The basic bonus terms are familiar to all players and they are wagering requirements, minimum deposit, validity period, game contribution and others. In terms of wagering, it is preferable to look for a requirement as small as possible. Usually, you can find requirements for 30x, which are quite reasonable. Anything above 45 and 50, however, should be looked at with more caution. Questions you should ask yourself are “What is the validity of this bonus?” and “Will I have enough time to fulfil them?”. A positive aspect of online slots is that they are easiest when it comes to fulfilling wagering requirements. A reason for that is the fact that they contribute 100%, have autoplay options and a large number of variations.

The minimum deposit you should aim to find is between £10 and £20, which is the case for most casinos, so you shouldn’t have too much trouble with that. A 10 deposit slots casino essentially allows you to play slots that you prefer with a deposit of only 10 pounds. The validity period depends very much on the wagering requirements. If you have high requirements like 40x, the validity period should be 30 days. So, always aim for tip for the best casino bonuses with the easiest terms .

Maximum Bonus Amount

Size does, of course, matter and it is normal that players would be looking for a large sum. There is nothing wrong with that, as long as you check the terms and conditions and they are reasonable enough. In the new games bonus offers we have in the table above; the largest amount comes from Casimba – £500. This is a spectacular amount and to make things better, there are also 50 spins free, that you get for some extra bonus rounds. The playthrough requirement is 35 times and has to be met within 30 days, which is more than a reasonable condition.

Slot Casino Max. Bonus Amount Terms Secure Link
Up to £100 + 10% Cashback Full T&Cs apply. New customers. 20 Spins for selected AOTG slots credited on reg, 180 (20 per day) following first deposit. Spins valid for 24 hours, exp in 30 days. Winnings credited as bonus funds with 20x wagering, max win £100. Min £20 dep for bonus funds. 40x wagering, game weighting/restrictions, betting limits. Casino-only bonus. Not Available on iOS app. Payment restrictions. Claim Bonus
Up to 500 Free Spins Each Worth 50p Full T&Cs apply. 18+. *UK only. Win up to 500 spins from Mega Wheel on 1st deposit. 24-hour expiry. Max bet £2.50, Max Spins win £8 per 10 spins, Max Bonus win £150, selected games & 65x wagering on winnings. Min deposit £10. No Neteller/Skrill. Claim Bonus
Up to £500 + 50 Bonus Spins Full T&Cs apply. 18+. New Players Only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £500 + 50 bonus spins on your 1st deposit, 25% match up to £1000 + 50 bonus spins on your 2nd deposit, and 50% match up to £500 + 25 bonus spins on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Please gamble responsibly. BeGambleAware.org. Claim Bonus
Up to £50 Welcome Bonus Full T&Cs apply. United Kingdom - *New customers only. Opt-in required. 100% Match Bonus up to £50 on 1st deposit of £10+. 50x bonus wagering applies as do weighting requirements. Debit Card & PayPal deposits only. This offer is valid for 7 days from your new account being registered. Irregular gameplay may invalidate your bonus. Claim Bonus

Slot Games Inclusion in Promotion

A common term of the bonuses is the fact that you can use it only on a certain amount of online slots, which is not ideal. You should aim at finding a bonus that is suitable for all slots. That is because, your favourite slot might not be in the chosen set, which is an inconvenience. You would have to be forced to learn the characteristics of all new games just, so you can use your bonus. Even though the operators usually choose the most popular slot games, which are beloved by many, it is much better to have all slots included in the bonus terms.

Maximum Bet Amount when Playing with a Bonus

Sometimes, casinos put a limit on the bet amount during bonus money play in order to prevent bonus abuse. That sum is usually a maximum of £5, which is quite inconvenient for low-stakes players. If you are looking for an online casino bonus, which has low wagering requirements, you can try Casimba Casino. Most games bonus offers out there, unfortunately, have a solid wagering requirement and a maximum bet amount. If you are a low-stakes player, however, this particular condition should not be too inconvenient for you. Trying some Thunderkick casino games would also do you good in case you like to keep your wagers small.

Accepted Deposit Methods

Another requirement, which you can often find among the terms and conditions of the bonus is the payment method used to make the deposit. Often enough, you can find that e-wallets like Skrill and Neteller are not in fact in the list of accepted methods for online gambling promotions. Stated otherwise, if you make a deposit via such a payment method, you will not be eligible to take the bonus. This is quite inconvenient, especially if you prefer using this exact method. You can use a debit card or PayPal instead of e-wallets for the initial deposit. From the 3 online casino sites we offer, Casimba has no payment methods requirements and you can make your deposit using whatever method you see fit.

The Best Online Slots Bonuses in the UK: A Comparison

Now that we have discussed what conditions and terms apply and what to look for, it’s time to compare the top 3 games bonus offers we have chosen as the best for slot players. Casino.com has both a bonus sum of £100 and 10% Cashback, which is quite a spectacular offer. In comparison, Casimba offers £500 but has 50 bonus spins instead of cashback. BGO offers up to 500 free spins, which is quite good for slots lovers. The minimum deposit for Casino.com and Casimba is £20 and for BGO it is £10, which are all reasonable amounts. The wagering requirements for two of the bonuses are 35x and 40x, which are quite high. However, the validity of those offers is 30 days, which is a long enough period to fulfil the wagering. If you are a fan of PayPal, then go to BGO Casino, as it is the only offer, we have, which allows PayPal deposits.

Slot Casino First Deposit Bonus Min. Deposit Terms and Conditions Wagering Max. Bet Amount Slot Contribution Bonus Validity PayPal Accepted
100% up to £100 + 10% Cashback £20 Full T&Cs apply. New customers. 20 Spins for selected AOTG slots credited on reg, 180 (20 per day) following first deposit. Spins valid for 24 hours, exp in 30 days. Winnings credited as bonus funds with 20x wagering, max win £100. Min £20 dep for bonus funds. 40x wagering, game weighting/restrictions, betting limits. Casino-only bonus. Not Available on iOS app. Payment restrictions. 40x Bonus £5 100% 30 Days No
Win Up to 500 Free Spins £10 Full T&Cs apply. 18+. *UK only. Win up to 500 spins from Mega Wheel on 1st deposit. 24-hour expiry. Max bet £2.50, Max Spins win £8 per 10 spins, Max Bonus win £150, selected games & 65x wagering on winnings. Min deposit £10. No Neteller/Skrill. 65x wagering on winnings £2.50 100% 24 Hours Yes
100% up to £500 £20 Full T&Cs apply. 18+. New Players Only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £500 + 50 bonus spins on your 1st deposit, 25% match up to £1000 + 50 bonus spins on your 2nd deposit, and 50% match up to £500 + 25 bonus spins on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Please gamble responsibly. BeGambleAware.org. 35x Bonus + Deposit £5 100% 30 Days No
£50 £20 Full T&Cs apply. United Kingdom - *New customers only. Opt-in required. 100% Match Bonus up to £50 on 1st deposit of £10+. 50x bonus wagering applies as do weighting requirements. Debit Card & PayPal deposits only. This offer is valid for 7 days from your new account being registered. Irregular gameplay may invalidate your bonus. 50x Bonus + Deposit None 100% 7 Days Yes
£123 £10 Full T&Cs apply. 18+. New players only - 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 - Cashback is cash, so no wagering - Cashback applies to deposit where no bonus is included. 50x Bonus £5 100% 30 Days No
500 Free Spins £10 Full T&Cs apply. 18+. *New players, £10+ deposit, no e-wallets/prepaid cards, 50x wagering on Vegas Free Spins, 40x wagering on Casino Free Spins. 30x Bonus None 100% 30 Days Yes
£40 £10 Full T&Cs apply. 18+. New customers only. Deposit/spend £20, get £40 bonus + 20 Free Spins. 35x Wag on Bonus. 10x Wag on Free Spins winnings. Free Spins valid on selected games. 7 days to claim, 7 days to wager. Restrictions. 30x Bonus £0.25 per spin 100% 14 Days Yes
£1500 £20 Full T&Cs apply. 18+. New players only. One bonus offer per player. Minimum deposit £20. Max bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £300 on your 1st deposit, 25% match up to £800 on your 2nd deposit, and 50% match up to £400 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements. 35x Bonus + Cash £5 100% 30 Days Yes
£300 + 100 Zee Spins £20 Full T&Cs apply. 18+. New players only. Min Deposit £20. Max Bonus Bet £5. Winnings from spins capped at £50. 100 Zee Spins valid on Starburst (first 10 credited immediately upon first deposit; rest credited at 07:00 GMT at 10/day). Spins must be used by 23:59 GMT of the day on which they are credited to player account, any unused shall be removed. Bonus funds must be used within 30 days. Bonus funds are separate to Cash funds, and subject to 35x wagering (bonus + cash). Full terms apply. BeGambleAware.org 35x Bonus £5 100% 30 Days No
50 Free Spins £10 Full T&Cs apply. 18+. First deposit only. 50 Free Spins on the Book of Dead slot. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. OJO’s Rewards and Game Play policy applies. 0x Wagering £0.10 per spin 100% Unlimited Yes

Free Offers

Some online casinos offer free spins on registration, without needing to make a deposit first. This usually appears tempting for players. However, such offers usually have harsh terms, such as a large wagering requirement and you need to deposit money in order to withdraw your winnings. So, it is not as non-binding as it appears. For that reason, we don’t usually promote such no-deposit offers in our reviews. If, however, you are looking for such free spins, do have in mind that BGO Casino will grant you 10 free spins on registration, which will have no wagering requirements whatsoever. Alternatively, you can also take a look at the new slot sites with a free sign up bonus if you want to enjoy a wider variety of offers where no deposits are required! And talking about this kind of bonuses, our page about the best £10 no deposit slot bonus in the UK – it might as well be exactly what you are searching for.

The Best Online Slots Bonus in the UK

As we already discussed in the review, we believe Casino.com is the best online slots bonus in UK. There are a bonus sum and free spins, which can all be used on the glorious slot games of your choice. You can, of course, choose another online casino as long as you are careful enough with the terms and conditions as all bonuses come with certain requirements. Always read carefully and know what to search for!

Up to 500 Free Spins On 1st Deposit
Wagering:
40x bonus amount
Min. Deposit:
£20
Validity:
30 Days
Full T&Cs apply. New customers. 20 Spins for selected AOTG slots credited on reg, 180 (20 per day) following first deposit. Spins valid for 24 hours, exp in 30 days. Winnings credited as bonus funds with 20x wagering, max win £100. Min £20 dep for bonus funds. 40x wagering, game weighting/restrictions, betting limits. Casino-only bonus. Not Available on iOS app. Payment restrictions.

In short, we chose this particular offer because it has 100 free spins, which can be used within 30 Days. It also has a 100% match up on deposits up to £100 in case you get tired of online slots and want to play a game or two of blackjack or roulette. The wagering requirements of 40x have a whole month to be fulfilled, which is more than enough. So, go ahead and give it a try!

Advantages and Disadvantages of Slot Bonuses

In this review, we took a look at the best bonus slots together! The advantages of using your bonus for slots are numerous. For instance, the wagering requirements are met faster as you have a 100% slot contribution, autoplay features and the biggest game variety. It is therefore much easier to fulfil all the bonus requirements within the given limit when playing slots. It is a little risky, though, and if you want to play with bigger safety, then we would recommend trying out roulette casino games. Have a look at the roulette bonuses we have picked in our specially dedicated page. Whichever bonus you choose always remember to look carefully at the terms and conditions beforehand. Good luck with your real online gambling for real money adventures! In order to give you a full picture, though, we feel the need to mention that there are some operators that offer bonuses that require a code. Perfect examples are the bCasino bonus code offers and the NetBet promo codes. Some players prefer such promotions instead of the regular ones and the best advice that we can give you is to read the pages that we have about such codes and decide which is the best match for you!

Popular Questions

Since our team always aims to give all the relevant information and help out gamblers in the best possible way, we decided to summarise everything that we know and to answer the most commonly asked questions by players. Don’t forget that, in case some of your questions remained unanswered, you can always contact us!

🎰 What are online slots bonus offers?

As you can imagine, online slots bonuses are promotions that online casinos give and that can be used on slots. These offers can be in the form of a deposit match or free spins for specific slot games. New UK players are advised to always read the full terms and conditions of all of the best online slots bonus offers before opting in.

🏆 Which are the best online slots bonuses in the UK?

To choose the very best online slots bonus offers is quite hard, taking into account the number of casinos that are tempting their customers with juicy promotions. Anyway, we managed to gather the top 10 online slot bonues and we are sure that at least one of them will catch your eye.

❓ What types of slots bonus offers are there?

The most popular types of slots bonus offers available at slots online casinos are the welcome bonus, also known as first deposit bonus, the no deposit slots bonus offer and the no wagering slots bonus. All these bonuses have certain advantages, so make sure you read the full terms and conditions prior to signing up.

🎁 Which is the best slots welcome bonus in the UK?

There are many top welcome bonus offers available to new UK players. As different players have different gaming desires and expectations, it is hard to handpick the best slots welcome bonus offer for all slots players. It is recommendable to make registrations at multiple casino UK sites, so that you can claim multiple welcome bonus offers.

🆓 Are there any free spins slots bonuses?

Yes, absolutely. There are many free spins bonus offers that give you the chance to win amazing rewards. New UK players are usually lured by deposit slots bonus offers that also reward them with extra spins. Promotions with free spins on Starburst or on Rainbow Riches are normally very highly valued.

🙋 How to pick the right online slots bonus?

Picking the right online slots bonus is very important. Some new UK players are lured in by the huge bonus sums, but forget to check the full terms and conditions of the offers. This often results in not being able to fulfil the requirements, therefore not being able to make a withdrawal from bonus offers.

❔ Are there any no deposit slots bonus offers?

Yes, there are many attractive free no deposit slots bonus offers available online. Normally, first time casino players don't want to spend real cash from the very beginning, so look for operators that offer free spins no deposit offers. We have handpicked some of the best free no deposit bonus offers available to UK players.

✨ Where can I find a no wagering slots bonus offer?

No wagering slots bonus offers are actually not very common, but still, some operators launch such promotions from time to time. Whether they are in the form of a welcome bonus or a regular promotion, such no wagering slots bonuses can be very beneficial as casino players can withdraw their bonus winnings right after they acquire them.

☔ Are all slots bonuses safe to claim?

As long as you are playing in a licensed and regulated slots online casino site, the available slots bonuses will be safe to claim. The UKGC is the regulatory body in the United Kingdom that strictly monitors all features and procedures at an online casino, including the many different casino games bonus offers. All of our recommended slots sites possess a UKGC licence.

💸 Do I need to make a deposit to claim an online slots bonus?

Not necessarily. Some online gambling sites offer bonuses with no deposit required. Such offers are highly valued by new UK players, as they don't require investing real funds from the very beginning. Keep in mind that such offers don't have a large maximum bonus amount, so make sure you read the full terms and conditions before signing up for the bonus.

❓ Can I claim more than one slot bonus?

It depends on the offer that you claim and on the policy of the casino in which you chose to play. If we are talking about a welcome offer - you can claim only one and usually, no other existing promotions can be used together with the welcome bonus. But, as far as you claim the bonuses one by one and fulfil the terms of each offer - you can grab as many of them as you want!

📈 What are the advantages of online slot bonus offers?

As a start, it is always better to play with some additional cash or extra spins when you start in an online gambling site. And since all casino offers have terms, wagering requirements and validity, we can assure you, from our own experience, that it is much easier to fulfil those conditions while playing slots than any other gambling game.

Enjoy More Excellent Online Casino Promotions

We hope that our bonus slots guide has helped you find the right offer for you. Need more information about your favourite casino game? You can find it on our page about the best online slots casinos in the UK. We also advise you to read our guide dedicated to the trusted online casino sites that we recommend to our readers. For the high risk lovers we selected the best high risk casino bonuses and operators as well! For low-risk players we recommend one of the risk free casino offers, on the other hand. Alternatively, if you are looking for a certain type of promotion, you may consult the bonus guides that we have selected for you: