Best Slots Bonuses 2024

Find the best slots bonuses from over 35 UK online casinos

Compare the best slot sign up offers from our slots welcome bonus table. Find the top UK casinos for deposit bonus slots, free spins and other promotions for May 2024.

  • PlayOJO Casino

    UK slots bonusUKGC Licence + UK players
    3,000+ games
    No wagering free spins slots bonus
    PlayOJO online slots bonus
    Get 80 Free Spins
    No Wagering!
    18+, new customers only, Full T&C’s apply, 0x wagering, min deposit £10. #AD
  • Betfred Casino

    UKGC Licence + UK players
    750+ games
    UK slots deposit bonus
    Betfred Casino
    Stake £10
    Get 200 Free Spins
    18+,New customers only. Register with code GAMES100. Deposit, using a Debit Card, and stake £/€10 or more, within 7 days, on Slots at Betfred Games to receive 200 Free Spins on selected titles. £/€0.10 per spin. Free Spins credited within 48 hours. Free Spins are valid for 7 days. Full T&Cs #AD
  • Spin and Win

    UKGC Licence + UK players
    550+ games
    Casino slots sign up bonus
    Spin and Win Casino
    Min deposit: £20
    100% Match Bonus up to £250 on 1st Deposit
    + 100 Free Spins
    Min 1st dep (Exc PayPal) £10 for 100% Bonus on Top Slots, max £250 + 100 free spins on Blueprint slots @20p. 40x wagering & Max Wins 5x bonus. Free Spins & winnings playable on Blueprints slots only. 18 +. Full T&C’s apply #AD

  • Karamba Casino

    UKGC Licence + UK players
    500+ games
    First deposit welcome bonus for slots players
    Karamba Casino
    100% Bonus up to £50
    + 100 Spins
    18+, new customers only, T&Cs apply, 35x wagering, min deposit £10. #AD
  • 888 Casino

    UKGC Licence + UK players
    1,000+ games
    Welcome bonus slots free play plus a first deposit match
    888 Casino
    88 Free Spins No Deposit
    + 100% up to £100
    18+, new customers only. New players with valid mobile number only • Claim in 48 hrs • Free Spins (FS) & bonus for selected games only • FS expire in 14 days • FS voucher winnings credited as bonus & uncapped • Bonus wins capped at £500, excl. JP wins • Pre-1st deposit: Bonus wins & max redeemable amount capped at £100, excl. JP wins • 1x wagering -req. only on games contributing 100% – in 90 days • No Deposit Offer terms & Deposit Bonus Offer terms #AD
  • All British Casino

    UKGC Licence + UK players
    600+ games
    Slots sign up bonus
    All British Casino
    100% up to £100
    + Always 10% Cashback
    New UK Players only. 18+. Maximum bonus is 100% up to £100. Min deposit is £20. No max cash out. Wagering is 35x bonus. Maximum bet while playing with a bonus is £5. Eligibility is restricted for suspected abuse. Cashback is cash with no restrictions. Skrill & Neteller deposits excluded. Cashback applies to deposits where no bonus is included. Full t&c’s apply #AD

  • Grosvenor

    UKGC Licence + UK players
    550+ games
    UK slots offer including 5 x wagering
    Grosvenor Casino
    Min deposit: £20
    Deposit £20 play with £50
    Just 5 x wagering requirements
  • Mr Green Casino

    UKGC Licence + UK players
    750+ games
    First deposit match bonus
    Mr Green Casino
    Stake £10, Get 100 FS at 10p on Big Bass Bonanza
    0x Wagering
    18+. Play Safe. New customers only. Opt in required. 1x per customer. Min. £10 stake. Max. 100 free spins at £0.10/spin on Big Bass Bonanza only. Bonus expires 72 hours after issue. Game weighting, game, country, currency, player restrictions and terms apply. #AD
  • Casiplay Casino

    UKGC Licence + UK players
    500+ games
    4 deposits slots promotion with free spins
    UK Exclusive
    Up to £100 Bonus
    + 150 Extra Spins
    18+, new customers only, T&Cs apply, wagering bonus 35x, min deposit £20. #AD
  • MrQ Casino

    UKGC Licence + UK players
    750+ games
    Free play slots with welcome bonus
    MrQ Casino
    Min deposit: £10
    No Wagering on Winnings!
    Deposit £10 Get 42 Free Spins
    18+, new customers only, First deposit only. Min deposit & spend £10. Max 42 spins on Fishin Frenzy Jackpot King at 10p per spin. Spins credited upon spend of £10. Full T&Cs apply. #AD
  • Pots of Luck

    UK slots bonusUKGC Licence + UK players
    400 + games
    Live Casino
    Pots of Luck slots bonus
    Deposit £10
    Get 100% Bonus up to £100 + Free Spins
    18+, new customers only, Wager from real balance first. 50x tWagering. Contribution may vary per game, selected games only.. only the wagering requirement is calculated on bonus bets only. Bonus valid for 30 days, free spins valid from receipt. Max conversions 3x bonus amount from free spins, £20. Withdrawal requests voids all active/pending bonuses. Excludes Skrill deposits. Full T&C’s #AD
  • Scorching Slots

    UK slots bonusUKGC Licence + UK players
    VIP Club
    Top Slot Providers
    scorching slots bonus
    Deposit £10
    Get 100% Bonus up to £100 + Free Spins
    18+, 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 from receipt/ free spins valid for 7 days from issue. Max conversion: 3x the bonus amount or free spins: £20. Excluded Skrill deposits. Withdrawal requests voids all active pending bonuses.. #AD

UK Slots Bonus Table – Slotsquad Top 10 Rankings

Every month we put together a list of the 10 best slot bonus welcome offers for UK players who make their first deposit. There are three main things that customers want from their online casinos: fair play, excellent games content and a sign up bonus.

We’ve used these same criteria to select the best online casino bonuses in the UK – if you like playing slots!

Rank Casino Slots Bonus Wagering Requirements Claim Offer
* Play OJO 50 free spins on 1st deposit + 30 extra free spins 0x visit casino
* Betfred Stake £10 Get 50 Free Spins + 50 Free Spins 30x visit casino
* Spin and Win 100% Match Bonus up to £500 on 1st Deposit 40x visit casino
* Karamba 100% slots bonus up to £50 + 100 spins 35x visit casino
* 888 Casino £88 free no deposit + 100% up to £100 50x visit casino
* All British Casino 100% up to £100 + always 10% cashback 35x visit casino
* Grosvenor Deposit £20 play with £50 Just 5 x wagering requirements 5x visit casino

It’s free to sign up at the most online casinos. But if you deposit, you want the best welcome bonuses available.

Let us share with you the top casinos for slot bonuses and deposit matches. They are the trusted brands where UK players prefer to play and stay, thanks to loyal promotions that continue long after registration. Each of the following websites is free to sign-up and join. We’ve included the details of the best welcome bonuses and the minimum deposit needed to trigger them. Want to know more? Just scroll down further to see how casino bonuses work.

Our guide to finding the best slot bonus in 2024

Find out what to look for when comparing online slot bonuses for UK players.

Ditching your online casino for a new brand with so much competition is easy, but you’ll want quality casinos when you make the switch. That means UK slot sites with fresh content, new games and promotions. Trusted names with strong reputations, new casinos working hard to make their names and everything in between.

But how do you choose right one?

Firstly, let’s look at some of the ways they compete for new registrations in 2024.

  • New games
  • Platform content
  • Slots promotions
  • Easy to use
  • Free play or demo slots
  • Cashier options
  • Responsible gaming tools
  • Customer support
  • Sign up bonus / first deposit bonus / multiple deposit bonuses
  • Free spins

Now that we’ve got our list, let’s look at one of them more carefully.

One of the main ways online casinos compete for new players is by offering a slots welcome bonus – a promotion that uses bonus money, free spins or a combination of both on a single game or multiple slot games.

From new slot sites with a free sign up bonus to free spins on your first deposit, there’s a huge variety of slots promotions that pack the UK regulated market. And while they range from identical to completely unique, each offer comes with terms and conditions that we can use for ranking purposes.

So whether you’re completely new to slot games or a seasoned spinner, we’re here to help you find the best slots sign up bonus – be it for free or on your first deposit.

Free No Deposit Vs Slots Deposit Bonus

UK slots bonuses can be divided into three broad camps: free spins, free play, and premium play that you must deposit for (usually known as a deposit match or first deposit bonuses).

The difference is simple, the first two types of bonus give you something when you sign up with no deposit needed; the latter requires a deposit.

But which is better, free play no deposit or playing slots with a deposit bonus?


The first and most obvious consideration is your budget. If you’re playing for real money, then there’s an obvious cost involved. But you’ll get better slot bonuses. On the other hand, free play is more restricted – particularly with rules on how much you can win, what you can play, and often with higher wagering requirements.

Furthermore, don’t forget there’s a maximum withdrawal associated with most if not all no deposit offers – meaning anything over that amount will be taken back by the online casino.

Not Free

With a slots deposit bonus, you’ll often get more freedom with the games you can play, higher winning caps (sometimes no winning caps) and bigger bonuses. While the average deposit match is 100% up to £100, some casinos offer up to 300%, including additional free spins. 

No deposit or deposit? Of course, the answer to this question depends on how you intend to play and how long you intend to stay. If you’re just trying out new casinos with free spins on demo games, then it’s a good idea to sign up (often with no deposit needed) and just test the platform.

Broadly speaking, though, a paid online slots bonus will always triumph over the freebies. Largely down to the extra freedoms (although still subject to wagering requirements) – of which could be rewarding, particularly if you’re playing jackpots or slots with bonuses, in-play features and reel modifiers.

Slots Welcome Bonus Explained

Find out about the different parts, wagering requirements and t&cs that make up all UK casino sign up offers.

Below you can find out how each term and condition works and how they affect you as a player. We’ll look at everything from maximum bonus to free spins value, qualifying payment methods to deposit match percentages – everything that will help you find the best welcome bonus for slots in the UK.

UK slots bonus used by 888 Casino

10 parts of a UK Slots Bonus

Whether it’s 20 free spins on your first deposit or £20 play money with no deposit needed, the 10 main parts that make up an online casino bonus are:

  • First-time depositors only (18+ country restrictions apply)
  • No deposit or minimum deposit details
  • Qualifying payment methods
  • Number of free spins, maximum bonus and percentage of deposit match
  • Claim time
  • Offer expiry
  • Bonus wins and capped information
  • Selected games
  • Wagering requirements
  • Withdrawal restrictions
New customers only

One of the main reasons players look for new slot sites with a free sign up bonus is that casinos market towards new players. While regular slots promotions come later, welcome bonuses come first. Often displayed as first depositors only, new players or new customers – nearly all sign up bonuses are for new members to that casino, not existing customers.

No deposit or minimum deposit only

This one’s straightforward, do you need to deposit or not. As we’ve mentioned earlier, there are pros and cons to both types of bonuses. Look out for phrases like register and deposit to get 10 free spins or sign up now for £10 free with no deposit needed. 

It should be clear that you are paying a premium for the bonus or receiving the bonus for free. It’s also important to know that free doesn’t always mean free; a deposit of £20 for 50 free spins still means you’re paying a premium of £20.

Bonus qualifying payment methods

It’s not uncommon to see restrictions on payment methods when it comes to welcome bonuses. Visa debit cards will almost certainly qualify each time, but digital e-wallets like Skrill and Neteller, in most cases, do not. Always remember to check the t&cs before making your deposit, else you might not get the bonus.

Number of free spins, maximum bonus and percentage of deposit match

Each casino has its own marketing campaign that it uses to attract players to its website. While some UK slots offers are completely unique, others use carbon copies that you’ll find at multiple brands. Either way, this is how online casinos attract your attention with those eye-catching headlines. But with so much competition, cloning and (very rarely) creativity – how do you know which bonus is best?

Generally speaking, the best slot bonus for UK players is one that combines free spins with a first deposit match. This part of the offer is the most important. Before signing up, consider how many free spins, the maximum bonus available and the percentage of any deposit match.

As a good rule of thumb, you should be looking for a high number of free spins with a reasonable free spin value, a low deposit, a high maximum bonus and low wagering requirements. In some cases, you can find bonuses with no wagering requirements whatsoever.

Claim time

Claim time – also known as offer valid, is the amount of time you have to claim your online slots welcome bonus. So if, for example, you had an offer valid for 72hrs in the t&cs, you would lose that bonus if not claimed within the given timeframe. Other examples include time limits on free spins, meaning players must use them within a certain period, with any unused spins being removed from their account afterwards.

Offer expiry

Self-explanatory, like above – use it or lose it.

Yes, when you sign up for any slot game bonus, whether that’s free spins or a 100% deposit match bonus, don’t forget to check the expiry date. Often given in days, this is the amount of time you have before that registration deal disappears. And they do!

It’s easy to get lost in the moment with free play or just generally forgetting that there’s an offer associated with your account.

Bonus wins

So, you want to win using your bonus? Well, firstly, it’s easier said than done. Unless, of course, we’re talking about online slot bonuses with no wagering requirements (more on this later – no wagering is a way of saying you keep every penny that you win). Anyway, back to the other winning.

UK slots players believe that they can win using free spins, bonus money or freeplay – and they can, but there’s a catch. If you’ve ever read the terms and conditions, you might have seen the legal jargon stating wins capped at £10 or bonus wins & max redeemable amount capped at £100; this is normal.

Just be aware that if you’re playing slots with bonus money or using a number of free spins, then any winnings resulting from those freebies will be capped.

Selected games

No one reads the terms and conditions, but they should – it’s essentially a contract between the casino and their customers. Take the hugely popular deposit and get free spins bonus. Just remember that you can’t use those free spins on every single game in the lobby. While each brand is different, they’re all the same when it comes to selected slot games (the slots you can play using your bonus).

Some of the most common promotions and best bonus slot games include Rich Wilde and the Book of Dead, Fluffy Favourites, Starburst and Rainbow Riches. And while it’s not uncommon for casinos to offer between one and several games, some sites let you use your bonus on dozens of slots.

It’s very easy to go straight for the slots sign up bonus, but just know what you can and cannot play!

Wagering requirements

Those sneaky wagering requirements pop up everywhere, although more and more UK casinos are moving towards scrapping these terms and conditions – in favour of no wagering. 

So what’s a wagering requirement?

A wagering requirement is a multiplier that represents the number of times you have to play through a bonus before you can withdraw any winnings. While 0x wagering is possible, most bonuses range between 20x and 50x wagering requirements – the lower, the better for the player.

Withdrawal restrictions

Casinos may restrict withdrawals associated with bonus money and wagering requirements. But they can’t prevent you from:

  • Withdrawing your deposit balance
  • Withdrawal of winnings from wagers made with funds in that deposit balance
  • Withdrawing winnings from any bonus not subject to wagering requirements

When is the best time to sign up for a slots welcome bonus?

There are so many slots promotions out there these days; it can be hard to know where and how to get the best offer. Thankfully, we’ve got tips to help you find the right one, and more importantly, when!

Online slots bonuses can be at their best in the last and the first week for first deposit bonuses and mid-month for regular promotions (following registration). Look out for big game releases too, anything hugely popular will be good for new customer offers.

Don’t rule out new casinos either; some of the best slots sign up offers come when new sites launch their platforms. If a casino is brand new, they’re out to compete in their first six months, meaning better deals as they try to attract new customers and build up player numbers.

10 different types of online slots bonus 

When it comes to slot sites with a welcome bonus, how can you be sure you’re getting it right? If you want to see some examples of how UK casinos promote their products, we’ve put together a list of the most popular sales pitches.

  1. Get 50 free spins on your first deposit with no wagering requirements
  2. 20 free spins with your first deposit, no wagering, no nonsense
  3. Get 50 free spins when you sign up
  4. Up to £100 + 100 extra spins welcome offer
  5. Deposit £50 play with 300 spins on selected slots
  6. 50% bonus match up to £100
  7. Register and deposit now for 25 free spins
  8. 150% up to £150 welcome bonus
  9. Play with £88 free no deposit needed
  10. 100% refund bonus up to £111 plus 100 extra spins

Now that you know what to look for, where to look and when to look – we hope that our guide can help point you in the right direction. If you’re still undecided, then check out our UK casino reviews or the 10 best slots to play online right now! (each with a designated site and bonus).

Or, continue reading!

How first deposit bonuses work at UK casinos

We don’t pull punches at Slotsquad. Too many slot review sites say that deposit bonuses are incredible, amazing and “incredibly amazing”. Do you want us to say that too? Or would you rather we told you how casino deposit bonuses work, and more importantly, why they work. If a player deposits £100, they play with £200! But remember, £100 is bonus money subject to wagering requirements!

There is nothing free in this world, and that couldn’t be truer than with online casinos.

The Welcome Bonus

The welcome bonus is an important stage of your online casino membership. It’s the first impression that players have of the brand, and also the first hurdle they take when trying to withdraw any future winnings. We’re talking about the first deposit bonus, the multiple deposit bonuses and any other bonus associated with joining an online casino.

So how do casino deposit bonuses work? They work by offering an incentive in return for action, normally adding bonus funds to the players account on their first deposit. The first deposit bonus at 100% match is the industries standard and most popular. If you deposit £20, you get £40, with £20 subject to wagering requirements.

Deposit bonuses come in many forms, but some are like the Devil himself. Charming, seductive and completely evil. At Slotsquad, we avoid these like the plague. But whether you’re getting £100 free, 20 free spins no deposit, five deposit bonuses, 300% match, deposit £10 get £60, etc. They all carry wagering requirements.

The Wagering Requirements

What are wagering requirements and why do deposit bonuses have them? If you go up a couple of paragraphs, I wrote nothing is free in this world, remember. Here is the reason things are not free in online casinos, bonuses are not really free. Because bonuses are subject to wagering requirements. The withdrawal hurdle that lies buried within the terms and conditions.

The terms are conditions for any online casino are boring, they’re cleverly small, tactically spaced and difficult to read. Strange when you about it, as the terms and conditions contain the casino’s most important stuff. Still, who reads the terms and conditions anyway? Someone who wants to know if they’ll ever get their casino winnings perhaps?

So how do deposit bonus wagering requirements work? Example: If you deposit £40 and play with £80 (using a standard 100% deposit match bonus), £40 of that £80 (the bonus) will need to be wagered a number of times. Wagering amounts vary from 5 x your bonus up to 50 x your bonus, perhaps more. But we’ll use 35 x wagering in our example.

Still with me? So if you deposit £40 and get £40 free, you’ll have to wager that bonus 35 x before you can withdraw any winnings associated with that bonus. You would have to wager through £1400 of slots and casino games. But wait, not all casino games are equal when it comes to wagering.

Not all slots and casino game wagering is equal

In our casino deposit bonus example above, you’ll have to wager through £1400 (your £40 bonus at 35 x wagering) before you can win to your wallet so to speak! That means withdraw winnings to your bank account. So how do you wager through that £1400 and which games do it more quickly? It’s important to note that not all games contribute to your wager equally. In fact, some are worse than others.

To get the information for you, I’m wading waste deep in the terms and conditions. It’s painfully boring, my eyes are squinting, and it hurts trying to understand, but I need to read on. It’s in here where we find out which slots or casino games contribute best to bonus wagering amounts.

In the UK slots site that we looked at, slot games contributed to 100% of the wagering amount, whilst classic slots contributed 75%. On the other hand, live dealer games such as Roulette and Blackjack offered just 5% towards the wagering of that bonus. Top tip, play online slots whilst you still have deposit bonus money. You’ll work through that wager much quicker. But check the terms and conditions of the online casino you intend to deposit with first.

Why casino first deposit bonuses work

Look at this logically, we said in our example that if you deposit £40, you play with £40. But to withdraw winnings you must play through £40 35 times, that’s £1400. It’s not a simple or quick process to do, nor is it meant to be. It’s why casino first deposit bonuses work, to keep us playing.

We get excited, play longer, get into games and find slots that we like playing. We see jackpots and winner leaderboards; winners, and we see potential wins for ourselves. All whilst trying to wager through £1400 of that £40 deposit bonus money.

That’s why deposit bonuses work? It’s not entirely in our interest, but here’s the good news. Once the bonus wagering amounts are met, we’re in a position to get on with business. Actually winning when we do win.

The best way to approach casino and slot bonuses

UK slot bonuses and casino deposit bonuses might offer the earth, but players should look more closely. See any bonus as a free look at the slots site or brand, a free demo if you like. Too many people get upset and misled by welcome bonuses because they jump without looking down first. Often left wondering why they can’t withdraw their winnings from the bonus money.

At Slotsquad, we’re not against welcome bonuses of any kind. We just want players to understand them. After all, the real fun starts when the welcome bonus and any wagering requirements are gone.