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The Best Slots Bonuses for UK Players

Author: Corey Miller, 04. October 2024

Bonuses are integral part of every online casino and often they’re the key indicator of how good an online casino can be. It is of utmost importance to carefully deliberate where you want to deposit your money and what bonus is best for you. Luckily, we’re here to help you. We have found the best bonuses by taking into account a set of criteria by which we measure them. If you pick a bonus offered at our site you’ll not go wrong at all. If not then continue reading to find out how to pick a good bonus for playing slots.

Casino Free Bonus Welcome Bonus Recommended Slots to Play Play Link Terms and Conditions
£88 100% up to £100 Millionaire Genie, Gonzo’s Quest, Starburst Get bonus! Full T&Cs apply. No Deposit Offer: New players with valid mobile number only • Claim in 48 hrs • 14 day expiry • Valid for selected games • Pre-1st deposit only: FS voucher winnings is uncapped, bonus wins & max redeemable amount for non-funded players capped at £100, excl. JP wins • Wager Bonus x1 - req. contributions vary by game • Bonus expires in 90 days • Deposit Offer: 1st time depositor at 888casino only • £20 min deposit • Claim in 48 hrs • Valid for selected games • Bonus wins capped at £500, excl. JP wins • Pre-1st deposit only: Bonus wins & max redeemable amount capped at £100, excl. JP wins • 30x wagering – req. vary by game • Bonus expires in 90 days • Payment method & country restrictions apply • Withdrawal terms, No Deposit Offer terms & Deposit Bonus Offer terms apply.
£10 150% up to £150 Mega Moolah, Thunderstruck II, Jurassic Park Get bonus! Full T&Cs Apply. New accounts only. Min. £10 deposit, debit card and PayPal only. 50x wagering, game contributions vary. Max. stake applies. 7-day expiry. 18+. GambleAware.org.
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How to Pick a Good Bonus

A good slots bonus is not much different than a bonus for casino games in general. The best slots bonuses are the welcome bonuses and no deposit bonuses. The advantage of welcome bonuses is that they come with a wagering requirement towards which slots always contribute 100%. But, be careful because the double-up options in slots (like the one in Book of Ra) don’t count towards the wagering requirement. Also, always look at the terms and conditions, and not just the bonus amount. Check the wagering requirement, see if the selection of slots is any good and pay attention to the criteria mentioned in the next paragraphs.

Bonus Amount and Percentage

When you’re looking at a bonus offer, see how much you can get at maximum and how much it’ll cost you if a deposit is involved. If the bonus amount is calculated as a 100% of your deposit amount and the maximum bonus you can get is £200, then it wouldn’t make sense to deposit more than £200. If the percentage is only 50% and the maximum bonus is £150, then you shouldn’t make a deposit larger than £300 etc. Always do a calculation before making a deposit in order to determine how much to deposit and to avoid unnecessary costs.

Wagering Requirements

Every bonus has a different wagering requirement that can range from 20x at minimum up to 50x at maximum, depending on the casino offering the bonus. Those casinos considered fair impose small wagering requirements. So, if the wagering requirement is, for example, 30x, it means you have to wager the bonus amount 30 times. If the bonus amount is £50, then to complete the wagering requirement you will have to wager £1,500 in order to withdraw your winnings. Usually you have to wager the bonus plus the deposit, while sometimes only the bonus amount.

Criteria for Picking the Best Slots Bonus

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For How Long Is The Bonus Valid

At best your bonus will be valid for an entire month, while in some rare occasions even two months, but usually 30 days are given. In reality you won’t need more than a week to complete the wagering requirement if you devote enough playing time (2-3 hours daily, depending on the wagering requirement). Some bonuses are valid for a smaller time period e.g. 7 days, but rarely. Also, depending on the bonus offer, some bonuses are given in instalments of certain amounts as you meet the wagering requirements and in other cases you have to wager the whole bonus before you can withdraw it.

What Payment Methods Are Accepted

Online casinos usually offer the same payment methods more or less. Some casinos offer more than 40 different payment methods, some barely 5 payment methods, but in all cases you will find at least one bank card method (Visa and Mastercard), one e-wallet (usually Skrill) and bank transfer. But most online casinos offer more than that and there are even prepaid cards. Depending on the method, it may be possible to deposit and withdraw with the same one, which is usually the case with e-wallets, Visa and bank transfers. Prepaid cards are offered only for deposits.

Types of Bonuses

The most common and prime types of bonuses are the welcome and no deposit ones. These are given to new casino players and are the first thing that players experience. A welcome bonus is given on your first deposit at the casino, while no deposit bonus is given just for signing up. After that players receive various other offers, like reload bonuses on future deposits, cash backs, free spins, bonuses given on holidays, birthdays or milestones etc. It depends how creative the casino is. All of these have different conditions regarding cashing out of winnings generated with them.

Deposit Bonus

Deposit bonuses are always tied to making a payment. You may claim them only if you make the minimum deposit requested and the bonus amount depends on the percentage that is applied to the deposit amount. The most popular deposit bonuses are the welcome bonuses, which are usually the highest and most generous, while the regular ones are usually called reload bonuses and are given in smaller amounts.

No Deposit Bonus for Slots

No deposit bonuses can be the sweetest ones, because they are literally free money. They can be claimed without making a deposit, hence the name, and usually are available only to new casino members so that they can try out the games for free using real money. On rare occasions they are given to regular players for various reasons, but mostly to new players. No deposit bonuses are often valid only for playing slots. In cases where a no deposit bonus is valid for all casino games only the slots contribute 100% towards the wagering requirement.

Free Spins

Free spins are some of the most desired bonuses among casino players. Usually they’re given to players when a new slot has been introduced, on a monthly basis or as part of a promotion. You get a certain number of spins for free and you get to keep the winnings which are then transformed into bonus money and subjected to a wagering requirement that you need to complete in order to make a withdrawal. Some casino players appreciate free spins so much that they decide where to play based on how often an online casino gives free spins to players.

Comp Points

Comp points (short for complementary points) are points that you earn each time you bet real money. You receive one point for certain amount of money that you have wagered, a rate that varies from casino to casino. After you have collected a certain number of comp points you can then exchange them for money or for different prizes like technology or even exotic trips in some cases. Sometimes online casinos set a day of the week when wagering earns your double comp points, usually when a certain slot game has been introduced as a featured game.

Other Promotions

The online casino industry is rich with promotions, something that the land-based casino industry will never be able to recreate. There are various promotions active for a restricted time usually inspired by holidays or other notable dates, and there are many unique daily deals valid only for the day when they are offered. Also, a standard casino promotion that 90% of casinos offer is the refer-a-friend offer where you get bonus if a newly registered player has referred you as the reason for signing up. Some online casinos maintain bonus calendars where all the regular and future promotions are displayed.

How Do the Top Sign Up Bonuses Compare?

The competition between online casinos is very fierce and as a result very generous bonus offers come up, which are then used to attract new players. Of course, the players are those that benefit the most from the fierce rivalry between the operators. The sign up deals, or welcome bonuses as they are called, are the most generous ones. A good sign up deal can be crucial in the battle for customers. Let us take a look at the two types of slots sign up bonuses – deposit and no deposit offers.

Recommended Deposit Bonuses

Undoubtedly, the best slots bonuses you can claim are the first-deposit ones. Casinos go out of their way to attract new players and this is why they have these amazing offers which double and sometimes even triple your initial deposit. Taking into account all the bonus ranking criteria we already discussed, we can say that these are the top bonus offers you can claim:

Casino Bonus % Max. Bonus Min. Deposit Playthrough Valid for Review Link Terms and Conditions
150% £150 £10 40x bonus amount 30 days Play Here! Full T&Cs Apply. New accounts only. Min. £10 deposit, debit card and PayPal only. 50x wagering, game contributions vary. Max. stake applies. 7-day expiry. 18+. GambleAware.org.
100% £100 £5 30x bonus amount 90 days Play Here! Full T&Cs apply. No Deposit Offer: New players with valid mobile number only • Claim in 48 hrs • 14 day expiry • Valid for selected games • Pre-1st deposit only: FS voucher winnings is uncapped, bonus wins & max redeemable amount for non-funded players capped at £100, excl. JP wins • Wager Bonus x1 - req. contributions vary by game • Bonus expires in 90 days • Deposit Offer: 1st time depositor at 888casino only • £20 min deposit • Claim in 48 hrs • Valid for selected games • Bonus wins capped at £500, excl. JP wins • Pre-1st deposit only: Bonus wins & max redeemable amount capped at £100, excl. JP wins • 30x wagering – req. vary by game • Bonus expires in 90 days • Payment method & country restrictions apply • Withdrawal terms, No Deposit Offer terms & Deposit Bonus Offer terms apply.
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These bonuses might look quite different but in fact they have a lot in common. They all have reasonable and achievable wagering terms, very low minimum deposit requirement and long enough validity period for you to get the maximum out of the promotion. Therefore, no matter which one or ones of these welcome offers you choose to claim, you’ll get a lot more to play with than your money’s worth.

Overview of the Best Free Bonuses

Based on all that we have said we would like to introduce you to the four best free slots bonuses available on the Internet at the moment. These are nothing but reputable online casinos respected in the online gaming community based on their past performances.

Top Free Bonuses
  • 32Red
  • £150
  • A £150 bonus can be claimed only if you’re new at the casino i.e. if you’ve registered for an account for the first time. You need to make a deposit; just sign up and deposit at least £10 to your account. You can even get it via the mobile casino.
  • 88 Free Spins
  • 88 Free Spins
  • 888 Casino gives £88 no deposit bonus to new players upon registration. The bonus is valid for a period of 14 days. The maximum amount that a player can withdraw as winnings from this bonus is £15 which you then have to wager 30 times.
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