Slots Deposit Bonus UK - Slot Sites With Welcome Bonus (2024)

By Lauri Hannelin. Updated:

Slots welcome bonus gives you heaps of extra money to play online slots with. Our casino experts have tested and ranked slot sites with welcome bonuses to help you find the right deal.

Slots bonuses refer to casino offers that are geared towards slot players. These promotions can include deposit bonuses, bonus spins, or even no wagering offers.

This page shows you how to claim a slots sign up bonus and what casinos are offering slots offers right now!

Best Slots Bonuses - June 2024

Category Bonus Casino
Best Overall Slots Sign Up Bonus 100%/£50 + 25 bonus spins LeoVegas
Best Slots Welcome Bonus for Game Variety 100%/£200 + 11 bonus spins Mr Vegas
Best Slots Bonus With Cashback 100%/£100 + 10% cashback All British Casino
Best Slots Welcome Bonus No Wagering 100 free spin slots bonus The Phone Casino
Best Slots Deposit Bonus 200%/£50 Q88Bets Casino

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  1. 200%/£50
    1st deposit bonus
    Q88Bets casino review »
    1st deposit bonus 200%/£50
    No deposit bonus -
    Number of slots 1800
    Wagering requirements 50x (B)
    Bonus code SKC03
    Q88Bets Casino just might be the king of slot casinos! It features a bold design with a powerful black and red palette, and a superb user experience. This is all thanks to th... Q88Bets casino review »
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    New players only. Bonus code: SKC03. Minimum deposit: £10. Wagering requirement: 50x. Bonus is valid for 30 days. Max conversion: 3x bonus. Skrill and Neteller deposits are excluded. Full and Bonus terms apply.
  2. 200%/£300 + 100 bonus spins + 40 tickets
    1st deposit bonus
    Play here »
    New customers only, 18+. Max one 200% bonus per person. Offer expires 7 days after opt in. Min deposit £20. Max. bonus is £300. Wagering requirement: 40x (D+B). Wagering must be done within 30 days. Get 25 bonus spins after spending £10 of your deposit. 25 daily bonus spins for 3 days if you login all 4 days in a row. Bonus spins and bingo tickets wagering: 1x. Full and Bonus apply.

Bojoko style illustration for slots bonuses

Best Online Slots Bonuses - Overview

Below, you can find the best online slots bonuses for UK players. All these casinos have good welcome offers for slot games, but also good usability and layout on their website, good slot selection and well-working customer support.

Best online slots bonuses in June 2024:

  1. LeoVegas - 100%/£50 + 25 bonus spins
  2. Mr Vegas - 100%/£200 + 11 bonus spins
  3. All British Casino - 100%/£100 + 10% cashback
  4. The Phone Casino - 100 free spin slots bonus
  5. Q88Bets Casino - 200%/£50

Best Overall Slots Sign Up Bonus - LeoVegas

LeoVegas Casino logo

The best online slots bonus is at LeoVegas.

LeoVegas, the King of the Jungle, gives you a slots welcome bonus with excellent terms. The casino has a 100% slots deposit bonus up to £50 with 25 no wagering spins.

Our team rated LeoVegas' online slots bonus as the best option for UK players because it combines a generous deposit match offer with wager-free spins. What makes it more special is that you can withdraw while wagering without forfeiting the bonus. Once you complete the wagering, you receive the reward in real money.

Play on LeoVegas »

Besides the top-rated bonus, LeoVegas offers an award-winning casino platform that suits slot fans perfectly. You can find all the leading game developers here and enjoy them at possibly the most modern casino of the year.

Bojoko rating
🎁 Slot bonus 100%/£50 + 25 bonus spins
🔄 Wager 35x (B)
🎰 Slots 1500+
✍️ Full review LeoVegas Casino review

Best Slots Welcome Bonus for Game Variety - Mr Vegas

Mr Vegas Casino logo

The best slots welcome bonus for game variety is at Mr Vegas.

Mr Vegas' online slots bonus is credited in 10% increments as you play on the site. You are constantly rewarded with withdrawable cash as you play.

Play on Mr Vegas »

Our team picked Mr Vegas for the go-to place for game variety. This casino offers more than 6,500 games from over 100 game developers. Slot players are spoilt for choice here with modern and classic video slots, Megaways games, and progressive jackpot slots.

Bojoko rating
🎁 Slot bonus 100%/£200 + 11 bonus spins
🔄 Wager 35x (B)
🎰 Slots 6600+
✍️ Full review Mr Vegas Casino review

Best Slots Bonus With Cashback - All British Casino

All British Casino logo

The best slots bonus with cashback is at All British Casino.

All British Casino, one of the most well-known online casinos on the market, is a complete package with an all-around high-quality casino environment. You can't really go wrong with this casino.

Play on All British Casino »

Compared to the previously mentioned duo, All British Casino takes a more traditional route with their welcome offer. However, a closer look at the offer reveals the reason why so many UK players have picked the online casino as their go-to site. 

The casino offers a deposit match bonus plus 10% permanent cashback for UK players. The wagering terms are on par with industry standards.

Bojoko rating
🎁 Slot bonus 100%/£100 + 10% cashback
🔄 Wager 35x (B)
🎰 Slots 2400+
✍️ Full review All British Casino review

Best Slots Welcome Bonus No Wagering - The Phone Casino

The Phone Casino logo

The best slots welcome bonus without wagering is at The Phone Casino.

The Phone Casino gives no deposit free spins for new British players, with 100 spins to Mr Wonga's Toy Emporium slot available upon registration. You can claim the free spins without a promo code or a deposit, and they come without any wagering requirement.

Play on The Phone Casino »

It's not only the slot bonus but also the wide range of games and payment methods that make The Phone Casino a great option for players. You can play hundreds of games here, with slots of all sorts available.

Bojoko rating
🎁 Slot bonus 100 free spin slots bonus
🔄 Wager -
🎰 Slots 2700+
✍️ Full review The Phone Casino review

Best Slots Deposit Bonus - Q88Bets Casino

Q88Bets logo

The best slots deposit bonus is at Q88Bets.

Q88Bets has a 200% deposit bonus for new UK players. Our team chose this offer because it not only doubles but triples your starting balance.

Play on Q88Bets »

Besides the online slots bonus, Q88Bets caters to players with a game catalogue that has over 40 game developers and over 1,400 games. The operator labels itself "Slot King", which suits the casino perfectly.

You can claim the slots deposit bonus by registering at the casino using the green button below and inputting the promo code: SKC03.

Bojoko rating
🎁 Slot bonus 200%/£50
🔄 Wager 50x (B)
🎰 Slots 2100+
✍️ Full review Q88Bets Casino review

Compare the Best Online Slots Bonuses

Compare the best slots sign up offers below. You can see the bonus, wagering terms, minimum deposit, and maximum win for each offer. See which bonus suits you best!

Best For Casino Slots Bonus WR Min dep Max win
Best overall LeoVegas 100%/£50 + 25 bonus spins 35x (B) £10 Unlimited
Best for game variety Mr Vegas 100%/£200 + 11 bonus spins 35x (B) £10 Unlimited
Best for cashback All British Casino 100%/£100 + 10% cashback 35x (B) £20 Unlimited
Best no wagering The Phone Casino 100 free spin slots bonus - - £100
Best deposit bonus Q88Bets 200%/£50 50x (B) £10 3x initial bonus

How We Rate Slot Bonuses

Bojoko style illustration with slots reel

We rate the best slots bonuses by looking at them from every angle. This includes the type of slot bonus, it's size, and most importantly, the terms. Bojoko's experts thoroughly test and compare slots bonuses to industry standards and other slots offers.

Our aim is to provide you with a clear verdict and a simple breakdown. This then allows you to choose slots promotions with confidence.

Here is a summary of the factors we consider when rating slots bonuses:

The best slots welcome bonus would ideally excel in all of these areas. However, you should not overlook the other factors, like game variety, when selecting a casino.

Have a look at our casino slot games page to find out what to look for in terms of slots and game providers. It's essential to find an online slots bonus site that has a proper game library, not just a handful of slots.

Different Types of Slots Offers

Sketch for different slots offer types

There are various types of slot offers available, each with its own set of perks and benefits. The best slot sites go above and beyond to give their players an unforgettable experience. As a result, a slots welcome bonus may include two or more bonuses, with various types combined to form a complete welcome package.

Slots Deposit Bonus

A deposit bonus, the most common and traditional offer type, can significantly boost your balance. The concept is simple, the casino matches your deposit with a specified amount of bonus funds, which you can convert into real money by wagering them. 

While the terms and conditions of these offers differ from casino to casino, the best slots deposit bonus has reasonable wagering requirements and limitations. These bonuses are frequently included as part of the slots welcome bonus, with a 100% deposit match bonus being the most common offer. However, as previously stated, some sites go even higher, with multiple casinos on the market offering 200% deposit bonuses.

Free Spins

Casinos often combine their deposit bonuses with bonus spins to spice up the offer. While bonus spins require a deposit, free spins are exactly what their name implies: spins that are given to you for free. Casinos provide these bonuses to new players and also reward free spins for existing players who have spent some time at the casino already.

These bonuses give you a chance to test the casino without risking any of your own money. Winnings from these spins are typically credited as bonus funds, which can be converted into withdrawable cash by wagering. 

Our free spins slots page goes into detail about these offers and presents the best casinos offering these types of bonuses. 

No Deposit Bonuses

A no deposit bonus is one of the most sought-after bonus types, and it's easy to see why. You get the opportunity to try a casino without making a deposit while still having the chance to win money in the process. 

These bonuses can range from bonus funds to free spins, with some casinos offering up to £20 without requiring a deposit. The main difference between no deposit bonus funds and no deposit free spins is that bonus funds can typically be used on several different games, whereas free spins are typically limited to just one. 

If these are the types of slot offers you're looking for, you're in luck. We have listed the latest no deposit casino bonuses UK, for your convenience.

No Wagering Free Spins

A no wagering bonus is a bonus type where the bonus is paid without wagering requirements. In other words, if you get a bonus with zero wagering, it's yours to keep, and you can do whatever you want with it.

A typical way for online casinos to give out no wagering bonuses is by offering free or bonus spins with no wagering requirements. This means that anything you win from the spins is real cash that you can withdraw on the spot if you want.

Naturally, the best kind of no wagering bonus is one you can get for free. You can read more about no deposit no wagering free spins on Bojoko.

New Slots Sign Up Bonus

The online casino industry is highly competitive, with each site trying to win players' loyalty. As a result, new slot sites are constantly coming up with more creative ways to reward their players, most notably with substantial new slots promotions.

The latest slot bonuses typically have a low minimum deposit requirement, allowing you to benefit from them without risking a larger sum. 

Discover the newest slots sign up bonus list below.

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Terms and Conditions for Slot Bonuses

A slots bonus, no matter what type it is, will come with some terms and conditions you must know before accepting the offer. While some bonuses have almost no limitations, others may ruin the entire bonus and render it useless to the player.

These terms vary significantly from one casino to another, but there are some fundamentals that you should check before choosing your online slots bonus.

Wagering Requirement

The wagering requirement tells you how many times you must match the value of the bonus offer before you can receive it in real money, and is generally the most important aspect of bonus terms. A strict wagering requirement can make it impossible to convert your bonus into withdrawable funds, while a lax requirement can work in the player's favour.

A bonus is considered to have a higher-than-average requirement if the wagering requirement is greater than 35 times the bonus amount. Our wagering requirements explained page features a wagering calculator which you can use if you want to double-check any details of your slot bonus.

The 35x wagering requirement is considered the industry gold standard.


The slots bonus may also be subject to various restrictions. For instance, no deposit bonuses frequently have a maximum winnings cap that sets a limit on the amount you can withdraw, regardless of how much you've won. Or if your bonus is sticky, you can't withdraw the original bonus sum. A non sticky bonus is better in this case.

Other restrictions include game weightings and prohibitions, which are essentially there to disqualify and limit the amount certain games can contribute to the wagering. Casinos usually notify you if a game you're playing isn't contributing to your wagering, but it's always a good idea to check the terms ahead of time if you plan to play a specific game.

General Terms

Finally, before you activate the slots bonus, you should be familiar with its fundamentals. What is the minimum deposit accepted, how long do you have to claim the bonus and complete the wagering, and how much can you withdraw? You can learn more about these core details on our UK casino bonus page.

Types of Deposit Bonus Slots to Play

While you can usually use your bonus to play the majority of slots, there are some games that you should prefer over others. First and foremost, the game must have a 100% wagering contribution. Live casino games often do not contribute at all, or contribute only a small percentage, such as 5%, making them a poor choice for a slot bonus.

Because the goal is to meet the wagering requirement, it's best to choose a low variance slot. These games do not have as high a single win potential, but they pay out winnings frequently. As a result, your balance is more likely to remain constant or increase when compared to a high volatility slot, which could drain your balance in minutes.

Another factor to consider is the game's RTP (return to player). The best RTP slots can return up to 99% to their players over time, so these games are naturally better suited for wagering bonuses as well.

These are some of the best types of deposit bonus slots:

Blood Suckers by NetEnt

Blood Suckers slot screenshot

Blood Suckers, a true NetEnt classic, is the ideal match for those looking for the best bonus slots. The 25-pay line, vampire-themed slot constantly rewards you with in-game bonus features, wilds, and tasty wins.

The game has two bonus features: a more frequent Burial Chamber bonus and a Vampire Bride free spins feature with the potential for big wins. In addition to its low volatility, the slot boasts a huge 98% RTP, making it one of the highest-paying NetEnt slots.

If you like a spooky atmosphere or simply want the best game to complete your wagering with, this is the one for you.

Esqueleto Explosivo by Thunderkick

Esqueleto Explosivo slot screenshot

Esqueleto Explosivo is themed around the Mexican Day of the Dead. There are five main symbols, which are represented by colourful skulls that sing a Mexican celebratory song each time you land a win. 

This low variance title has 5 reels and 17 pay lines, as well as action-packed features such as Mucho Multipliers, cascading wins, and a massive RTP of 97.60%. As a result, it's an ideal bonus slot for anyone trying to complete their wagering requirement.

Fire Joker by Play'n GO

Fire Joker slot screenshot

Looking for a more traditional slot hall experience? Fire Joker is a 3-reel slot that is one of Play'n Go's all-time classics.

This game heats up quickly; land two full reels for a re-spin feature, or win with a full screen of the same symbol to get a chance on the Wheel of Multipliers.

This slot has one of the lowest variances out there, with a fairly high RTP of 96.15% by default. The upbeat music and fast-paced feel of the game make it a great choice to spin your wagering through with.

Games You Can't Play With Slots Bonuses

As mentioned before, some games are prohibited when you are playing with a slots bonus. Casinos prohibit the use of certain games for bonus purposes due to their high RTP, which could make the wagering process too easy from the casino's perspective.

These games are listed in the terms of the offer and usually feature completely banned, non-contributing, and partially contributing games. For example, Thunderkick's 1429 Uncharted Seas has a whopping 98.5% RTP, which is so high that most casinos will not let you wager a bonus on it. Some instant and live casino games allow you to place safe bets, which allow you to wager large sums of money while only losing a small percentage of your wager. This is considered bonus abuse, and as a result, these games are on the banned list for slots bonuses.

While the contributing games vary by casino, you usually cannot use your bonus funds to play jackpot slots, live casino games, or table games. Therefore, it's important that you check the list beforehand.

Summary - How to Get Online Slots Bonuses

Getting your slots promotions is actually quite simple. The difficult part is finding the right match for yourself, which is why we list and review various casinos and their offers for you.

Find the best slot bonuses from our casino list

1. Find the best slot bonuses from our casino list

At Bojoko, we provide you with the best slots offers at UK-licensed casinos. Browse our selection or filter the results to your own preferences to find the right casino for you..

Read the expert reviews

2. Read the expert reviews

After choosing your preferred casino, you can take a look at our expert reviews to get further insights about the slots bonus. Our experience will tell you what to expect from the bonus..

Go to the casino

3. Go to the casino

Every review page has a green ‘PLAY HERE' button that will take you straight to the casino. It will also activate any special bonus offers we might have for that particular casino.

Register and claim your bonus

4. Register and claim your bonus

When you get to the casino, register an account by filling out the required details. Deposit and claim your bonus. Remember to check if the bonus requires a bonus code.

Find Slots Bonuses

Alternative Bonus Options

Bojoko design for other bonus options

Using bonuses to play slots is the most common way of doing things on online casinos, but it's not the only way. You can enjoy other games as well with bonus funds.

Casino Bonus

A general casino bonus offers a versatile way to enhance your gaming experience across various games.

These bonuses are not restricted to specific game types like slots or table games, making them perfect for players who enjoy a bit of everything.

With a general casino bonus, you have the freedom to explore the entire spectrum of the casino's offerings, from the latest slot releases to classic table games. Discover the best casino bonuses to find your match!

Roulette Bonus

Roulette bonuses are a great way of getting more out of your table game session.

Roulette is a classic, no doubt about that. When people think of casino gambling, roulette is often the first thing that comes to mind.

Bonuses for roulette are not that common, which is why we have gathered the best offers in one place.

Check out our roulette bonuses page to see more.

Blackjack Bonus

Blackjack bonuses can help you get started.

Blackjack is one of the most strategic table games, which is why it is so popular. A bonus is a good way to boost your bankroll and help you practice the different strategies.

Take a look at our blackjack bonuses page for the best offers.

No Wagering Bonus

No wagering bonus lets you keep what you win right away.

Bonus wagering has been a part of casino bonuses forever and is something we come to expect. But that's not the case with these bonuses. There are bonuses available that pay all their winnings in cash.

You can find the best no wagering bonuses right here on Bojoko.

Reload Bonus

What happens when you've already taken your welcome offer? That is when reload bonuses start to kick in.

These are bonus offers that are given to you after you have already started playing and depositing. A good reload bonus will be a repeatable perk.

Here, you can find all the best casino reload offers.


A slot bonus is something that a casino can give to its players as a way of rewarding them. You can get these bonuses when you sign up for a new casino or simply by playing at a site that rewards its loyal players.

To find the best slots bonuses in the UK, browse our list of slot bonus casinos and further compare them by reading our reviews and using our filtering tools.

There are various types of slots bonuses, such as deposit bonuses, free spins, and wager-free bonuses. The most common and popular type of offer is a slots deposit bonus, which is usually the first deposit bonus at casinos.

The best slot sites with welcome bonuses are LeoVegas, Mr Vegas, and All British Casino. These casino sites offer slots welcome bonuses with popular video slots.

About the Author

Lauri Hannelin

Article by:

Lauri Hannelin

Lauri, a passionate casino enthusiast, embarked on his journey in the gambling industry in 2019. His career has spanned various facets of the iGaming world, from technical and commercial roles to innovative positions in online casino and sports betting companies. This diverse experience has not only deepened his understanding of the industry but also shaped him into an all-around expert in online casinos.

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