Find The Best Casino Bonuses Online

Casino bonuses are the bread and butter of the online casino world, creating a fun and exciting experience. The casino bonuses UK might come in the shape of a plain old bonus, a no deposit bonus, a sign-up bonus, a UK casino welcome bonus, and more! Where can you find the best casino bonuses UK? Right here at SlotsWise, our experts will take you through the different bonus types for desktop and mobile gaming. All you need to do is find a site with the most suitable offer for you and start your gaming adventure.

Casino Bonus Calculator

If you can’t decide whether or not the casino bonus is the best choice for you, then look no further. Thanks to our fantastic casino bonus calculator, you can find that out right away. The calculator is easy and simple to use and will calculate the total amount you’ll need to wager before making a withdrawal. Just enter the deposit amount, the deposit bonus percentage and the wagering requirements and in a split second, you will get the results of the total amount required to be wagered.

What Are Casino Bonuses?

Online casinos use different methods to attract new players and keep existing ones, with casino bonuses being one of the most attractive ones. These online slot bonuses are the enticements that keep the players interested, and casinos make sure that the latest and most appealing offers will be displayed when you arrive on their page.

Here at SlotsWise, we constantly look for the best casino bonuses UK from the most reliable online casinos. All you need to do is find a site that has the most suitable online slot bonuses for you and start your gaming adventure. You can even read our reviews on each of the online casinos that we recommend on our site. Casino bonuses change regularly, and we always ensure that the ones displayed here are up-to-date and accurate. So, on this page, you can check out the best casino bonuses UK for 2023.

Types of Casino Bonuses

Online casinos are really creative when it comes to creating bonuses, and that’s why they come in different forms. However, even though you may come across a few types of online slot bonuses, choosing either one opens the door to the roster of online slots, table and card games. Let’s get into detail about the types of online casino bonuses UK and what can be found at some of the best casino bonus sites.

Welcome bonus

The welcome bonuses are also known as sign-up bonuses or first deposit bonuses. No matter the name, these types of online slot bonuses have one goal: to attract and greet new players. The most common UK casino welcome bonus is the free spins, but there are also free bingo tickets, match bonuses, spin the mega reel, scratch cards, and more. There are even casino bonus sites that give you the chance to claim a welcome offer without making a deposit.

Match Deposit Bonus or Reload Bonus

This type of bonus goes by a few different names and is really popular among players. So, when you go through different casino bonus sites, you might come across a match deposit bonus, matching bonus, deposit bonus or even reload bonus. In short, when an online casino offers a matching bonus, it means that it will match the deposited funds in the form of a bonus. The best casino bonuses UK even include different matching bonus variations for players that make small, medium and larger deposits.

Free Spins

Without a doubt, free spins are among the most popular type of casino bonuses UK. The free spins are credited to online slot games and allow you to play certain games for free, without risks. They are usually associated with a specific game that is stated in the terms and conditions of the offer. Oftentimes, these types of online casino bonuses UK come as a no-deposit version, which is more favourable to players. It should be noted that most of the free spins bonuses usually have wagering requirements.

Refer a Friend Bonus

It’s one of the most common types of online slot bonuses, and the concept is pretty much self-explanatory. You recommend the online casino site to a friend, and then once they join and make their first deposit, you get a bonus. It can be a fixed amount or tied to the amount that your friend deposited on their first deposit with the casino in question.

Loyalty Programme

Most online casinos have loyalty programmes that offer different perks to the most loyal players. Every time you play at the same casino, you collect a certain amount of points. Keep in mind that different games come with a different number of loyalty points. Usually, slot games deliver more loyalty points, as opposed to table games, for example.

Players are automatically qualified for the loyalty programme as soon as they use their welcome offer. The more you play, the more points you collect, which can be spent on free spins, bonus funds or other great perks. Loyalty programmes can have other benefits, such as custom online slot bonuses, faster money withdrawals, special casino tournaments, and more.

What are Wagering Requirements?

One of the most frequent terms we all come across is wagering requirements, so let’s explain what it means and why it is so important when it comes to UK casino bonuses.

Wagering requirements are conditions that most casino bonus sites include. Each player must meet these requirements after they’ve claimed certain slot bonuses so they can withdraw their winnings. In short, a wagering requirement is the number of times that a certain player has to play the bonus funds before they can withdraw any winnings in cash.

So, before you claim any casino bonuses UK, make sure that you read the Terms and Conditions. All legit casino bonus sites will have the wagering requirements clearly stated there.

You might wonder what the purpose of wagering requirements is and why they exist. Well, actually, there’s a good reason behind this, and it’s not a way for online casinos to make more money. There are many anti-money laundering regulations, and wagering requirements are implemented so that the casinos can comply with those set rules.

Promo offers

In addition to a standard UK casino welcome bonus, you can also claim a range of other casino bonuses. These offers can be recurring, but they can also be tied to a specific date or event.

What Conditions to Look Out for in Casino Bonuses

We already mentioned the importance of reading the Terms and Conditions before choosing your best casinos bonus. However, this part holds a lot more crucial information about the online slot bonuses that you need to be aware of before claiming them:

  • What is the minimum deposit for the bonus;
  • Does the bonus have wagering requirements;
  • Is there a time restriction on using the bonus;
  • What games are included in the bonus;
  • Is there a promo code to enter?

Checking these things will help you get the most out of the best casino bonuses UK. Here at SlotsWise, we feature only trustworthy casino bonus sites that clearly display all of this information about their best casino bonuses.

Can You Claim Casino Bonuses on Mobile?

We live in a time when a lot of players prefer playing casino games on their mobile devices. So, the logical question is – can I claim online casino bonuses on my smartphone? The answer is yes. Online bonus sites are aware that most of their players these days would rather be playing on their mobile devices, so the choice of device poses no difficulties when it comes to claiming the best casino bonuses UK. In fact, some casinos offer special mobile bonuses available only to players who either register from their mobile device or log in on their mobile device for the first time.

How Do We Review The Best UK Online Casinos

Online casino bonuses UK, especially welcome offers, are just one aspect of online casinos. Despite being the most important aspect for many players, numerous other things must be taken into consideration as well when reviewing online casinos. The process can be summed up as follows.

Our team of experts signs up at casino bonus sites and tests every aspect of them – the speed, games, accuracy, and security level. We claim and test the casino bonuses to see if they work properly. All in all, for an online casino to receive SlotsWise’s seal of approval, it must go through our in-depth process of reviewing.

Online Casino Games

The game portfolio is another important criterion that we consider when we rate casino bonuses UK. The top-rated casinos offer a diverse selection of games that includes various online slots, table games, live casino games, and more. It’s also important that these games are optimised to work well on desktop and mobile devices.


Of course, players want a variety of payment options to make deposits and withdrawals. For that reason, we always test the payment methods available at online casinos, from debit cards to e-wallets like Skrill and Neteller, online payments such as PayPal, prepaid cards such as Paysafecard, and alternatives like Pay by Phone. The trusted UK online casinos offer such payment methods and have written what protocols they use for protecting your funds on their site. It’s also important to check the processing times of the deposits and withdrawals, as well as the accepted limits.


Playing games at online casinos involves real money. For that reason, the safety and security of an online casino, especially the new online casinos, is the most important feature you should consider when looking for a place to play. When you find an online casino where you want to join, the first thing you have to do is to check if it’s licenced by the official gambling authority of the country you’re living in. Then, make sure to check if the casino is up to date on the latest security technologies and protocols and whether it’s certified to provide fair play and honest payouts. You can check these details at the bottom of the casino’s homepage.


As mentioned above, a reliable online casino must be licenced and regulated by the country’s proper authority where it operates. In terms of the UK online casinos, always choose to play at a casino that is licenced by the UK Gambling Commission. No site makes it into our top-rated UK casinos list if it doesn’t have a proper operating licence by this regulator. In addition, other regulators ensure that online casinos provide a secure gaming environment for players outside the UK, including the Gibraltar Regulatory Authority, Malta Gaming Authority, Isle of Man Gambling Commission, and more.

Mobile Experience

These days, more than 70% of online casino players in the UK prefer to use their mobile devices to play. This means that online casinos have to be mobile optimised to meet players’ expectations. Fortunately, almost all of the best casino sites in the UK have optimised their websites for mobile use, meaning you can play your favourite games from your mobile browser. In addition, some online casinos provide some of the best slot apps for Android and iOS devices. The UK online casinos that we recommend are easy to navigate on mobile, and you can easily access all games, promotions, banking options, welcome bonuses and other features.

Software Providers

An online casino won’t be able to operate if it weren’t for the software providers. Software providers specialise in developing high-quality and innovative games and create their own niche. The best UK casino sites have integrated a variety of games from many top-notch software providers, including NetEnt, Microgaming, Playtech, Evolution Gaming, Quickspin, Play N Go, IGT, Nektan, Eyecon, Scientific Games, Big Time Gaming, Red Tiger Gaming, Gamesys, and more. Go through the full list of the most popular and trustworthy software providers available at the best new online casinos in the UK.

Customer Support

Every reliable online casino in the UK has a 24/7 customer support service ready to help you with any issue you have. The most popular methods of contacting customer support at the best UK online casinos are email, phone and live chat. In addition, all of the online casinos that we recommend on this page have FAQ sections that consist of questions that provide answers to some of the most common concerns, including issues of payments, access to your account, current bonuses and promotions, and also the games the casino offers.

Trusted Casino Bonuses from SlotsWise

These days, there are countless casino bonuses UK. At the sites featured here on SlotsWise, you can find the best UK casino offers that will fit your specific needs. These include welcome bonus slots, a free spins no deposit bonus, new slot sites with a free sign-up bonus, and so much more.

New players who want to join an online casino can benefit from the generous welcome bonuses that the sites offer. On the other side, regular players can boost their accounts with some excellent bonuses waiting for them. Plus, no matter if you’re a new or a regular player, it’s always a great idea to be part of a Loyalty Program that will reward you with impressive prizes.

At SlotsWise, you have a choice of vast and flexible bonuses at the most popular online casinos, so you can easily find the one that suits you the best. Feel free to check the featured bonuses and make your pick. Happy gaming!


Is It Safe to Claim an Online Casino Bonus?

Before we recommend an online casino to our readers, we carefully review and test them. Not only that, these real money online casinos have all of their online slots and casino games tested by independent auditors and are licensed by the United Kingdom Gambling Commission. So, you can rest assured that you play in a safe and secure environment.

What are Casino Bonus Codes?

Bonus codes, or promo codes, are a combination of characters which can give you access to a specific online casino bonus. Usually, you’ll need to enter the bonus code after you’ve made a deposit at an online casino.

What are Wager-Free Casino Bonus Offers?

The name pretty much explains it. The wager-free casino bonus offers don’t require the players to play the bonus money for a certain number of times before they withdraw the winnings in cash.

What Are Casino Bonuses?

An online casino bonus is a reward given from the site in order to attract new players and maintain their existing ones. The bonuses are usually offered as an incentive, whether it’s a sign-up bonus, loyalty program, deposit-based, etc.

What Games Can I Use The Casino Bonuses For?

That will be stated in the terms and conditions of the bonus. Most of the online casinos have special games where you can use your bonus. However, there are online casinos where you can use the bonus at any game you want.

Are Casino Bonuses Available For Mobile Play?

Yes. Nowadays, almost all of the online casinos are mobile-optimised and the bonuses can be used on the mobile version of the site as well.

How Long Does It Take To Receive My Bonus?

As long as you fulfil your required commitment for receiving the bonus, it will be immediately activated and ready for you to use.

Where Can I Find The Best Casino Bonuses?

If you’re looking for the best casino bonuses, you’re on the right page. Here at SlotsWise, we’re providing you with the current best casino bonuses that can be found at the most popular online casinos.