Latest UK Casino Bonus Codes – Updated December 2024

✨ We updated this page in December 2024 with the newest promo codes available across our selection of licensed casinos. After our recent rounds of checks, OnlyWin was the sole casino that met our strict criteria to be featured on our list. Use this guide to find the best slot bonus codes available online.

Find Up-to-Date Casino Bonus Codes at JohnSlots!

To find you the best bonus codes here at JohnSlots, we have a proactive crew of casino experts who never stop searching for new casino deals. They use a set of rigorous criteria to make sure that the casinos they offer here match their high standards. Here’s what they look for and why:

• Bonus quality – We value your time and money and want you to get the most out of your casino experience; therefore, we only share bonus deals that are rewarding and have fair terms.
• Games selection – We know that slots, table games and live dealer games are the bread and butter at any online casino and so we want to make sure that you find all of your favourites at our recommended sites.
• Wagering requirements – While wagering requirements can’t always be avoided, we do our best to find you sites with reasonable wagering terms or even better, bonus codes free from any wagering. With our help, you can conquer and beat wagering requirements.
• Safety and security – Your safety and security at an online casino are non-negotiable. No valid licence and bank-grade encryption to keep your funds and personal information safe means no access to our top list.
• Regional bonus considerations – We only recommend promo codes at casinos available in your location, using local payment methods and currency.
• Responsible gambling – our experts test each casino that accepts promo codes and verify it has a reputable licence, responsible gambling tools, and puts player safety first!

For the best promo codes available right now, take a look below. There’s a lot of testing, deliberating, tea, coffee and biscuits involved in the process of finding and keeping them up to date at all times on our top list, and we wouldn’t have it any other way.

What Are Casino Promo Codes?

Hunting for casino codes is like searching for special discount codes or gift certificates when shopping online. Some online casinos frown upon such bonus codes and claim that they are overrated; others believe that casino codes bring players more fun and excitement when unlocking exclusive offers.

Just like various casino promotions, casino codes are used to promote new game releases or time-sensitive special offers. They can also be used to attract new players and reward existing ones by giving them special access to limited deals. Therefore, often, you’ll see casino codes in the shape of a password bound to specific promotions such as free spins, a welcome match bonus, reload bonus or a no deposit bonus. For example, the offer can appear as ‘25 free spins on Starburst with code JOHNSLOTS’. You would need to enter this exact passcode to activate your offer; otherwise, it wouldn’t work.

You can also search for referral casino promo codes or vouchers via various online forums, which can be quite time-consuming. Also, if forums aren’t regularly updated, you’ll be wasting your time just to find invalid promo codes. Therefore we recommend using our up-to-date top list for quick and easy access to the latest casino codes.

Not all bonus codes work for every player. While some casino promo codes can appear on the casinos home or bonus page for everyone to claim, others can be more exclusive. For example, a special code can be sent to the list of the casino’s VIPs only. Also, a special casino promo code can be sent directly to your email or phone number as a birthday gift from the casino. This type of bonus code will be tailored to work exclusively for you.

Main Types of Casino Codes

There are as many types of codes as there are casino bonuses including welcome bonuses, no deposit bonuses, free spins, no deposit free spins, and reload bonuses. Sometimes it can get slightly confusing to differentiate them, so we’ve got our casino experts to clarify it for you below.

Welcome Bonus Codes

This type of bonus is perfect for new players and usually activates upon signing up and making your first deposit. By entering the code provided, you’ll unlock your welcome bonus which can be anything from a 50% to 200% match bonus, to 10 or more free spins, to 20% cashback. For example, they may appear as follows:

• Deposit £10 & claim 100% up to £100. Use promo code: JOHNSLOTS100*
• Deposit £10 & claim 25 free spins on Book of Dead. Use promo code: JOHNSLOTS25*
• Deposit £10 & claim 10% cashback. Use promo code: JOHNSLOTS10*

_{*Example offers only}

You might also come across a casino promo code to use with a no-deposit welcome bonus, which is one of the most sought-after welcome offers by casino players. The reason being, you don’t have to spend your own cash when you start playing, hence the bonus name. Essentially, by using a bonus code to activate the no-deposit offer you can start playing games for free, which is always a good start at an online casino.

These types of welcome bonus codes will almost always be clearly visible on the casino’s home or bonus page for you to use. Failing to enter the code provided may result in you losing the bonus altogether, therefore, you should always check the bonus terms first.

Free 100 Spins Redeem Codes

As with the welcome bonus, you can get a mixed bag of rewards with free spin codes as a new or returning player on numerous online slot games. These can be standalone extra free spins, a part of a match bonus offer or even no-wager free spins.

For example, you can get a 100% match bonus with your first deposit and also benefit from free spins on top of the offer in exchange for the bonus code. The no-wager slots bonus codes are especially great for testing out various games. And they are useful for new casino players who want to be able to cash out their wins straight away!

OnlyWin casino offers 100 Free Spins. To unlock the bonus, use promo code JO100WIN

Another casino that offers 100 Free Spins is LevelUP – get the bonus with promo code LVL1

Reload Bonus Codes

Reload bonuses can be beneficial for both first-time players and returning customers. As multi-tiered bonuses, they offer a chance to claim more additional bonuses on your second, third, fourth and sometimes even fifth deposit. These, again, can include a nice mix of match bonuses and free spins.

In most cases, you will not need to enter a bonus code on your first deposit. But you’ll have to use specific codes provided to make the most of the extra bonuses when re-depositing:

• 1st Deposit: 100% up to 100% + 100 free spins on Starburst*
• 2nd Deposit: 50% up to 100% + 50 free spins on Starburst or Finn’s Golden Tavern. Use promo code: JSD2*
• 3rd Deposit: 50% up to 200% + 25 free spins on Book of Dead. Use promo code: JSD3*

_{*Example offers only}

Another way to obtain various reload bonus codes is to join the casino’s mailing list and opt-in to their promotional emails. Or, as a regular player, you can always contact the support team to see if they have any special codes available for you.

Matched Deposit Bonus Code

Typically provided as part of a welcome bonus or welcome package bonus, a matched deposit offer matches the player’s deposit to a fixed percentage up to a predetermined amount.

“100% (up to £100)” means that the deposit is doubled up to £100, and a maximum of £100 is offered on all deposits above £100.

💡 What to Consider: Minimum Deposits and Wagering Requirements

Also known as a playthrough rate, a wagering requirement denotes how many times the bonus funds must be rolled over before they can be withdrawn. It’s always expressed as a multiple, such as “50x”, which means the funds must be wagered 50 times over (£500 for a £10 sum, for example).

One of the things that players often overlook is where this wagering requirement applies. It could make a massive difference. For instance, if a 200% match deposit bonus with a cap of £100 has a wagering requirement of 30x, it could require a total of £300 to £900. The varying terms will look something like this:

• 30x wagering requirement (deposit only): Only applies to the £10 deposit. £300 in total.
• 30x wagering requirement (bonus only): Only applies to the £20 bonus. £600 in total.
• 30x wagering requirement (deposit and bonus amount): Applies to the full sum—£ 900 in total.

No Deposit Casino Bonus Codes

A no deposit bonus is the most popular type of bonus among casual players. As the name suggests, there’s no deposit needed, and this means the total amount offered is usually smaller than deposit bonuses and loyalty offers.

💡 What to Consider: Verification Rules

Registration isn’t usually enough to qualify for one of these bonuses. The UK has some very strict verification rules, so you need to pass AML and KYC checks before you can use your funds. Verification is often completed using soft credit checks, which happen automatically and don’t affect your credit score. They’re not always sufficient, though, so you may need to add a valid debit card.

It won’t be charged, and there is no obligation to deposit any money. It’s there for verification purposes only.

Free Spin Promo Codes

A fixed bundle of bonus spins is provided, usually on specific slot games but occasionally on all games from a certain provider.

💡 What to Consider: Spin Values and Win Caps

“100 free spins” sounds a lot better than 50, but not if those 100 spins have a value of just £0.05 each and the 50 free spins are worth 20p each. Check the terms and conditions to discover the true value of the free spin offer, and keep an eye out for the win cap, which is the maximum amount of winnings that you can claim from this bonus.

Casino Promo Codes for Existing Customers

Existing members are usually rewarded for staying loyal to casino sites. Unless the player has reached a high ranking in a loyalty program, the incentives will be smaller than the big bonus amounts given to new members. However, the terms tend to be more favourable, often with lower wagering requirements.

💡 What to Consider: Loyalty Status

The higher you are in the casino’s loyalty program, the more you will get from bonuses like these. Typically, casinos will rank players based on how much they wager—the more you play, the more loyalty points you’ll get, and the higher you will climb. But there are also loyalty programs that give players points whenever they complete certain challenges, such as playing specific games, downloading apps, or just logging into the site every day.

Game Provider Promo Code

Provided by gaming operators, these bonuses are also known as network promotions. They typically exist across multiple casinos that host games from that developer, and as they have a lot of influence in the industry and work across many sites, they are able to offer sizeable prize pools, including big jackpots in slot tournaments and big spin bundles for free spin offers.

💡 What to Consider: Qualifying Games

As these promotions are tied to specific developers, they will only apply to games from those developers. Many of them are limited to just one or a few games, often new releases that developers launch alongside bonuses to encourage more people to play.

Special Casino Bonus Codes

The above bonuses are just a few of the ones found in online casinos. Some of the other bonuses include:

• Other Site Sections: Casinos will often launch promotions designed to encourage players to try other sections of their site, including bingo, poker, and sports betting. They want to encourage their members to try everything that they have to offer.
• Golden Chips: These promotions are a lot like free spins, only they apply to table games and live casino games like blackjack, baccarat, and roulette. Players are given a fixed number of chips with a predetermined value, and they can use these to play table games for free.
• Mobile App Bonuses: When mobile apps first became popular, casinos offered players bonuses for downloading and using them. They invested heavily into creating these apps and wanted to encourage as much activity as possible. These days, mobile apps are the norm, but there are still bonuses that reward players for using them.
• Tournaments: Slot tournaments and table game tournaments usually require an opt-in, as opposed to a promo code, but it varies from site to site. They create leaderboards and populate these with the most active or successful players. There are big prizes available for those who finish in the highest positions.

💡 What to Consider: Qualifying Requirements

Look for specific gaming and deposit requirements, such as the slots you must play to earn points in a tournament, the games you can play with your golden chips, or the actions you must follow to get a mobile-specific bonus.

Why Should You Take Advantage of Bonus Codes?

Promo codes often give you an extra amount on top of a deposit. There are wagering requirements and other terms attached to that bonus amount, but they don’t impact your deposit. United Kingdom gambling regulations state that players must be allowed to withdraw all of the funds in their account at any time, regardless of any active bonuses. This was not always the case, and it’s still not the case in many countries outside of the UK, but this rule means you have nothing to lose when using a promo code.

For instance, let’s assume that you collect a matched deposit bonus that promises to double your initial deposit amount of £50. You’ll have £50 in real money and £50 in bonus credits. The latter will be subject to a wagering requirement, and this must be met before the bonus credits convert to cash, but you can withdraw that initial £50 deposit at any time. Sure, you would invalidate the bonus credits, but it wouldn’t impact your real money balance.

You started with £50, and you will leave with £50.

These bonus rules differ greatly from region to region. The above applies mainly to the UK and Ireland, but there are specific rules elsewhere, too, including Canada, Austria, Denmark, Belgium, and Sweden, the latter of which is very strict regarding bonuses and only allows casinos to offer players a single promotion.

Casino Coupon Codes

A coupon code is just a bonus code by another name. You’ll also see them being referred to as “promo codes” and “promotional codes”. They don’t refer to any specific type, and they operate in the same way. It’s just the casino’s marketing preference.

How to Choose the Best Bonus Codes for Casinos

Our team of experts use multi-step criteria to help you find the best bonus codes around. We find the codes, confirm that they are legitimate and active, check them to ensure they are worthwhile, and then highlight the best ones for your convenience. The trick in finding the best casino codes is knowing what’s hot and what’s not in any offer. Keep this information in mind when deciding which codes to use:

• The first thing you should do is to read the small print carefully. The promotional text will make a big statement to catch your eye, but there will always be bonus terms to consider. Here you’ll find all the nitty-gritty details about the terms and then will be able to decide whether the bonus suits your playing style and budget.
• Our main rule is to never fall for the biggest bonus offer available straight away. Though it happens, the bigger bonus doesn’t always mean a better bonus.

💡Pay attention to wagering requirements, the minimum depositing amount, expiration time scales and which games you can use your bonuses on.

• Also, check if your spin wins are capped and at what value they come. The bigger the value, the better the bonus.
• Consider the relevancy: It might be a big offer, but if it’s geared toward free poker or blackjack chips and you exclusively play slots, it’s not much use to you. Look for promotions that you actually care about, and don’t just focus on the size or apparent generosity of the offer.
• Check if you already have a casino account: Some bonus codes are loyalty offers, which means you can collect them as a current member using a reload promotion or rewards program. Many, however, are limited to new players only, so check if you have a casino account first.

How to Use Bonus Codes

While each casino offers different codes, the process of using them is almost identical and can usually be completed in 3 short steps:

1. Start by choosing a casino that you like. You can use our list to find casinos with the best bonuses.
2. Sign up with the casino by registering a new player account.
3. Enter a valid code either on sign up or when making your first deposit – this step will vary from casino to casino.

Popular Slot Games to Play With Bonus Codes

One of the best things about finding codes for slots at online casinos is that they can be used on numerous exciting online games, whether it’s free spins or bonus cash. As a place to start, we pulled together a list of some of the players’ favoured slots below that you could try playing with your casino codes. Read our full slot reviews for more information.

Bonus Codes for Casino: Terms and Conditions

In addition to the wagering requirements and game restrictions outlined above, there are a few terms found on most bonuses:

• Min Deposit: The lowest qualifying amount you must deposit.
• Time Limits: Every bonus has several time limits—from the time you have to collect the bonus to the time you have to use it and clear the wagering period.
• Activation: Oftentimes, a promo code is enough to active the offer. Sometimes, you’ll need to click a link, opt-in, or even contact live chat.
• Player Restrictions: In addition to being restricted to new members, casino bonuses are often limited to one person per household. If you share a house with other players, check that they haven’t signed up already.

Allowed Payment Methods

It’s common for casinos to exclude deposits using web wallets (such as Skrill and Neteller). A simple CTRL/CMD + F followed by your preferred method will tell you if it’s excluded.

Debit cards are nearly always allowed. Skrill, Neteller, and Paysafecard are the most common exclusions, but PayPal is also added to that list on occasion.

Top Tips for Using Casino Promo Codes

One of the biggest questions concerning casino bonuses is whether or not they encourage problem gambling. We mentioned above that Swedish authorities only allow one bonus per player, and that’s because they think casino bonuses encourage irresponsible gambling. But it’s all down to the player—if they are responsible and they keep the following tips in mind, they can minimise the risk:

• Do read the terms and conditions to make sure you’re fully aware of how the bonus works.
• Don’t collect a bonus just for the sake of it. You should be ready and willing to play at that casino.
• Do plan your gameplay. How will the spins/bonus money be used? Which games offer the best return?
• Don’t ignore the restrictions. Deposit too little or with the wrong method, and you will miss out.
• Do gamble responsibly. Set limits, stay focused, and quit when you’re tired or frustrated.
• Don’t expect the casino to help you regardless. Just because a minor oversight caused you to miss out doesn’t mean the customer support team will understand and credit you the bonus anyway.
• Do stay updated: Bonuses change throughout the year, with everything from minor tweaks in the T&C to complete promotional changes.
• Don’t play in unlicensed casinos. It doesn’t matter how generous the bonus seems to be, it’s not worth the risk.
• Do respect the rules. The bonus will be invalidated if you’re found to be abusing it, such as by opening multiple accounts.
• Don’t start late. Make sure you’re ready to play when you collect, as there are time limits to consider.

🚫Avoid Promo Code Abuse. Abusing bonus promotions is a very serious issue that can lead to restrictions on your account. Should the casino discover you’ve been overusing bonus codes, or claiming a bonus multiple times, they might suspend your account and/or forfeiture of your winnings. JohnSlots advices against any bonus abuses – we want to ensure fair play for all users.

Why Trust JohnSlots?

JohnSlots is staffed by a team of 12 reviewers who have over 50 years of experience in the gambling industry. We are former industry professionals, journalists, and consultants, but more importantly, we’re all players. So, not only can we provide some much-needed expertise and industry insights, but we can do it from the perspective of gamblers who love slots, table games, and casino bonuses as much as you do!

Our team has already reviewed over 1500 slots and 300 casinos, each of which undergoes an extensive 7-step review process that includes over 60 hours of testing per slot/casino and a real money budget of £120 for each project. It’s extensive. It’s insightful. But more importantly, it’s 100% honest and transparent.

Responsible Gambling

As exciting as promo codes can be, it’s important not to get carried away. Don’t let the fear of missing out get you when you’re not ready to play or don’t have the funds—there will be another code on another day. Also, remember to:

• Set deposit limits
• Take frequent breaks
• Never gamble tired or under the influence
• Never wager more than you can afford to lose

FAQ Section

Ready for bonus code hunting, but have more questions? Below you’ll find answers to some of the most asked questions about casino codes.