Discover the best slots sign up bonuses in the UK. You'll find a complete list of slots welcome bonus offers reviewed by Bojoko experts on this page.
Use our smart filters to compare different bonuses, from free spins to deposit bonuses for online slots!
Our top-rated sign up offers for slots gameplay include deposit match bonuses, spins to popular slot games, and even cashback promotions.
| 1st deposit bonus | 200%/£300 + 100 bonus spins + 40 tickets |
|---|---|
| No deposit bonus | - |
| Number of slots | 40 |
| Wagering requirements | 40x (D+B) |
| Bonus code |
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We selected the best slots welcome bonuses based on promotion type, value, terms, and slot game variety. Check out our recommendations below:
The best slots welcome bonus is at LeoVegas.
LeoVegas, the King of the Jungle, gives you a slots welcome bonus with excellent terms. The casino has 50 no wagering spins for easy picking.
Our team rated LeoVegas' online slots bonus as the best option for UK players because it gives you a nice amount of wager-free spins with no extra fine print. Just deposit, wager that money once and you get your zero-wagering bonus spins with no withdrawal limit.
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.
| 🎁 Slot bonus | 50 bonus spins |
|---|---|
| 🔄 Wagering | 0x |
| 🎰 Slots | 2200+ |
| ✍️ Full review | LeoVegas Casino review |
Mr Vegas' online slots bonus of 100% up to £200 is credited in 10% increments as you play on the site. You are constantly rewarded with withdrawable cash as you play.
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.
| 🎁 Slot bonus | 100%/£200 + 11 bonus spins |
|---|---|
| 🔄 Wagering | 35x (B) |
| 🎰 Slots | 8300+ |
| ✍️ Full review | Mr Vegas Casino review |
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.
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.
| 🎁 Slot bonus | 100%/£100 |
|---|---|
| 🔄 Wagering | 35x (B) |
| 🎰 Slots | 2400+ |
| ✍️ Full review |
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.
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.
| 🎁 Slot bonus | 100 free spin slots bonus |
|---|---|
| 🔄 Wagering | 0x |
| 🎰 Slots | 2700+ |
| ✍️ Full review | The Phone Casino review |
Spinzwin Casino has a 200% deposit bonus for new UK players. Our team chose this offer because it not only doubles but triples your starting balance.
Besides the online slots bonus, Spinzwin Casino caters to players with a game catalogue that has over 40 game developers and over 2,000 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.
| 🎁 Slot bonus | 200%/£500 + 50 bonus spins |
|---|---|
| 🔄 Wagering | 50x (B) |
| 🎰 Slots | 2260+ |
| ✍️ Full review | Spinzwin Casino review |
Compare the best slots sign up offers in the summary table. You can see the bonus, wagering terms, minimum deposit, and maximum win for each offer.
| Best For | Casino | Slots Bonus | WR | Min Dep | Max Win |
|---|---|---|---|---|---|
| Best overall | LeoVegas | 50 bonus spins | 0x | £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 | 35x (B) | £20 | Unlimited |
| Best no wagering | The Phone Casino | 100 free spin slots bonus | 0x | - | £100 |
| Best deposit bonus | Spinzwin | 200%/£500 + 50 bonus spins | 50x (B) | £20 | 3x initial bonus |
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..
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.
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.
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.
Here's how you claim a slots bonus easily:
Once wagering is done, cash out your winnings. Check for max withdrawal limits or any final restrictions.
Here are the latest slot bonuses from new UK casinos. Compare the following new slot sites to find a brand-new slots bonus to your taste. These promotions often come with lower deposit limits, bonus spins, or even no wagering requirements.
New slots sign up offers are listed below:
We rate slot bonuses by testing the type of slot bonus, it's size, and most importantly, the terms and conditions.
Here is a summary of the factors we consider when rating slots bonuses:
We aim to provide you with a clear verdict and a simple breakdown of each slots bonus. This then allows you to choose slots promotions with confidence.
A top 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.
We at Bojoko believe that slot bonuses should be easy to understand and fair for the player. That's why each of our reviews is written with full transparency and always from the player's point of view.
Our bonus team personally tests each online slot bonus, goes through the fine print, and tells you its real value, not just the marketing. This includes the wagering, how realistic the withdrawal limits are, the eligible games, and so on.
If a bonus looks great on paper but hides strict conditions, we'll tell you. If it's genuinely player-friendly, we'll highlight that too.
We know what makes a slot bonus fair, fun, and valuable. That's why our readers trust Bojoko to provide honest insights and unbiased ratings that help you choose bonuses with confidence.
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.
You can read more about all the popular types of casino bonuses if you want to understand the differences better.
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.
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.
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 page for quick access to these offers.
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 no deposit no wagering free 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.
Most UK slot bonuses target new players, but regulars aren't forgotten. Top slot sites often offer reload bonuses and slot tournaments to keep things exciting after your first deposit.
Reload bonus casinos give existing players extra funds or spins on follow-up deposits. Common offers include 50% up to £50 or free spins every week. Some are tied to specific games or VIP programs.
Slot tournaments let you compete for prizes by spinning selected slots. You climb a leaderboard based on wins or points, with rewards like free spins, cash, or gadgets. Many UK casinos host weekly or monthly casino tournaments with free entry after a deposit.
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.
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 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.
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.
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 casino games are naturally better suited for wagering bonuses as well.
Here are some of the best slots to use your bonus on:
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 round, wilds, and tasty wins.
The Blood Suckers slot has two bonus round 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 machine 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 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.
The top Thunderkick slot has 5 reels and 17 pay lines, as well as action-packed bonus game 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.
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 bonus round, or win with a full screen of the same symbol to get a chance on the Wheel of Multipliers.
Fire Joker slot game 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.
As mentioned before, some games are prohibited when you are playing with an online 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 online slot 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.
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.
A general casino bonus offers a versatile way to enhance your gaming experience across various games.
These online casino bonuses are not restricted to specific game types like slots or table games, making them perfect for players who enjoy a bit of everything.
The best casino bonuses allow you to explore the entire spectrum of the casino's offerings, from the latest slot releases to classic table games. You are not tied to any specific vertical when using these promotions.
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 rooulette are not that common, which is why we have gathered the best offers in one place on our Roulette bonuses page. You can tap into the various offers there.
Blackjack bonuses can help you get started on the iconic table game with a boost.
Blackjack is one of the most strategic table games, which is why it is so popular. Blackjack bonuses are a good way to boost your bankroll and help you practice the different strategies.
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 no wagering bonuses. There are bonuses available that pay all their winnings in cash.
What happens when you've already taken your welcome offer? That is when reload bonuses start to kick in.
Casino reload bonuses are given to you after you have already started playing and depositing. A good reload bonus will be a repeatable perk.
These offers range from spins to deposit match bonuses.
Baccarat bonuses are ideal for players who prefer a more strategic casino game. Top baccarat bonus offers can give you extra funds to try different baccarat variants, including live dealer tables.
Exclusive baccarat promotions may be rare, but other offers, like cashback, can be used to boost your baccarat funds.
