Updated: April 30, 2020

Casino Bonus UK

Welcome to Casinomir! We have the best online casino bonus guide for UK players. As part of our service, we offer a comprehensive list of the best casino bonuses and negotiate all our bonuses directly with the casinos we feature on our site. That is how we are able to offer our players huge exclusive welcome and deposit bonuses at all the best online casinos in the UK.

If you are looking for the best casino bonuses, you can filter our list and see which online casinos are currently offering the best deals and huge bonuses. Then simply open the review page for the specific site you are interested in and you can view a complete breakdown of all the bonuses and how they are structured.

Players are always asking us about the best bonuses. But this is not always an easy question to answer. Some gambling sites provide awesome welcome bonuses to new players when they sign-up but little else, while others have extremely generous bonuses on the first deposit, and then there are casinos that reward player loyalty with huge bonuses.

You need to decide what you are looking for and what type of UK casino bonus best suits your needs. To help you make your choice, browse our comprehensive list of the best casino bonuses in the UK and find the ones that appeal to you.

Best UK Casino Bonus – June 2020

CasinoFree SpinsBonusInfoPlay
40 £13000
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UK Players Accepted
50 £10000
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UK Players Accepted
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UK Players Accepted
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UK Players Accepted
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UK Players Accepted
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UK Players Accepted
100 £4000
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UK Players Accepted
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UK Players Accepted
66 £4000
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UK Players Accepted
45 £3000
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UK Players Accepted
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UK Players Accepted
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UK Players Accepted
20 £2500
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UK Players Accepted
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UK Players Accepted
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UK Players Accepted
40 £2000
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UK Players Accepted
150 £1500
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UK Players Accepted
999 £1000
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UK Players Accepted
888 £1000
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UK Players Accepted
888 £1000
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UK Players Accepted

Find and Compare the Best Online Casino Bonuses on Casinomir

Do you want to find the top casinos not covered by Gamstop in the UK? Then you have come to the right place. Casinomir offers you a complete guide to all the best online casino bonuses.

With more online casinos than ever in the United Kingdom, there are plenty of sites to choose from but we recognise that everyone has different preferences, so you need to figure out what you are specifically looking for in a casino. Are you looking for the best payouts? Or something else?

At all the sites that we feature in our online casino bonus guide, you will be able to play both slots and table games. Each game usually offers a different kind of bonus with your first deposit. If you sort the list on this page according to “Most Popular” you will find these casinos at the top. 

This is a great place for players to start looking for their new online casino site with top bonuses. Once you sign-up to a site, you can use your bonus money to try out the casino, find games that you enjoy and increase your chances of winning.

Online casinos offer welcome bonuses and deposit bonuses as a way to attract new players and you should take advantage of these generous promotions to find your favourite UK Casino.

Many of the casinos offer free spins with no deposit for UK players, giving you the opportunity to test out a lot of different online casino sites and games for free, while still standing a chance of winning real money. The bonus offers can really help you increase the chances.

Casino Bonus can help you to obtain larger winnings when playing online
Highest Casino Bonuses Right Now
Highest Casino Bonuses Right Now

Casino Bonuses and Wagering Requirements

hands giving bonus

Online casinos are always trying to attract new players by offering bonuses. An online casino deposit bonus usually means that the casino will give you a bonus when you make a deposit.

These promotions are usually designed to give you an extra chance of winning when you first sign up to an online casino site.

This is a marketing tool that the operators use instead of spending money on expensive advertising so feel free to take advantage of all the bonus offers on our site! It is a great way of trying out new casinos!

So how does a deposit bonus work?

  • You find and register at an online casino of your choice. New sites usually have the best offers.
  • You make an initial deposit to the site and the casino gives you a deposit bonus. For example, if you deposit £100, you could get a 100 % match bonus from the casino (some casinos might give you more than that). This means the casino will match the amount you deposited and your initial £100 deposit is now worth £200!
  • You now have £200 that you can use to play all the exciting bonus games on the website. Some casinos may restrict which games are available when you use your bonus, so it is important to read the terms and conditions of the deposit offer.
  • Many casinos offer deposit bonuses on up to five deposits, so each time you make a deposit, you can use your bonus to play more and win more.
  • To benefit from your bonus, you need to continue playing until you have met the wagering requirements of the bonus offer. It is only once you meet these requirements that you will be able to withdraw any winnings. The wagering requirements are different at different casinos, and often for each bonus offer, so once again it is important to read the terms and conditions. A typical wagering requirement is around 35x.
  • There are some casinos that offer bonuses with no wagering requirements. This means you can use your casino bonus with no wagering, which is great, so be on the lookout for these.
  • You can find many sites that will give you the opportunity to play fun casino games and slot machines using a bonus promotion. They are all displayed on our page with attached guides and reviews, including the best casino bonuses with no wagering requirements. All you need to do is take your pick and start winning today!


What is casino bonus?

A casino bonus could take many different forms with different requirements. Basically it’s a way for online casinos to give the players extra money to play for when they start playing at a new casino. There are different bonuses for different casino games. Free spins are one very popular bonus right now and it only works for online slots. Casinos with a sportsbook often gives the players more money to play for in addition to their first deposit.

Which is the best casino bonus?

That depends on which games you play. Some casinos are offering free money to play for without any wagering requirements and this bonus is often considered to be the best one because you can play at any game with that bonus.

What is a welcome bonus?

Almost all sites are offering new players a welcome bonus. The casinos want to attract new players and give them an incentive to start playing. Some welcome bonuses don’t require any deposit at all. Other casinos offer a deposit bonus which will double or triple the money you have put in which will give you an excellent start on your casino adventure.

What is a deposit bonus?

This is a bonus that requires that you make a deposit. Once you have made your first deposit the casino will match your money and give you additional money to play for, this money is often linked with wagering requirements. The casino will often match your deposit by offering 100-300% additional money with 30-40x in wagering requirements. Some casinos offer up to five deposit bonuses.

Can I win real money with Online Casino Bonuses

Of course! The bonuses will give an extra good start on your casino adventure by offering you more money. You can even win real money with free spins without making any deposit. A Norwegian player won millions with free spins a couple of years ago without risking a cent. Make sure to read the terms and conditions before you play, some casinos have really high wagering requirements which makes it harder to win money on your bonus.

How do I get casino bonuses?

All the casino bonuses have different bonus systems. Some casinos gives away free spins or free money to play for once you have registered at their casino. Some casinos require that the player make a deposit before they can receive any bonus. Other casinos have something called cash-back which is based on how much you play. Casinos with a VIP-program often awards loyal players with individual unique bonuses.

Why are the casinos offering bonuses?

You may ask yourself the question, why are the online casinos giving away free money and the answer is quite simple, online casinos want to attract new players. The reason why real land-based doesn’t give away free money is that online casinos have a lot less cost. The competition between online casinos here in the UK have improved to bonuses a lot.

What is a high-roller bonus?

A High roller bonus is another word for VIP bonus. And a VIP-bonus is usually given to players that play a lot, also known as high-rollers. Almost all casinos have some kind of VIP-program and these bonuses are given to specific players and these bonuses are often tailor-made to a specific players preferences. The casinos often want to show appreciation to these players and give them something back.

What is cashback?

Some casinos offer cashback and it’s not a very common bonus. A Cash Back Bonus is basically a re-fund in bonus money that you will get on your account if you have lost money. Normally this kind of bonus is a percentage of your losses and the percentage usually is around 10%. High-rollers usually prefers this kind of bonus and it doesn’t work with your welcome bonus.

What are bonus wagering requirements

Online casinos use wagering requirements in order to protect the bonuses that they give away for free. Wagering requirements are always a number followed by a “x”. The most common number is around 35x. This means that you have to wager your bonus amount 35 times before you can make a withdrawal of your winnings.

Best Deposit Bonuses for UK players

The United Kingdom is regarded as the number one gambling nation in the world. Over 80 % of the population gambles in some way or another. In the last few years, there has been a definite shift in the focus of gamblers and online casinos are now more popular than physical ones.

This growth in the popularity of online casinos has contributed to online casinos offering an increase in bonuses and these are proving to be very popular with UK players. At Casinomir we think this is great news for all online gamblers. 

Since the British people have such a passion for gambling, they are much more knowledgeable and demanding than players in other countries. British players expect great odds, bonuses and casino games from their online casinos.

Casinos that can’t fulfil these expectations don’t have a chance of succeeding in the United Kingdom. Both new and established online casinos have to continuously offer great bonuses and promotions for UK players in order to stay competitive and attract new players. In the UK, these can be anything from 300 or 400 casino bonus credits to 200% casino bonus and anything in between.

Since there are so many different online casinos offering similar games on their websites, including slot machines, video slots, roulette, blackjack, and live casino games, and they are all competing for the same market, most UK casino bonuses are very generous. Find the best guide to all online casino bonuses right here at Casinomir.

100% bonus

The most common bonus offer for online casinos is 100% deposit bonuses. That means depositing £100, will give you the chance to play with £200 the first time at the casino. Make sure to read everything about wagering requirements to be sure.

200% bonus

To receive a 200% bonus is also something somewhat common these days. If you deposit £10 you will get an additional £20 in bonus money. This together means you have £30 to play within the casino. Sometimes the offer is limited to selected games.

300% bonus

A 300% bonus is a bit rarer, but not absolutely impossible to find. If you look for a 300 % match bonus for online casino, you many times need to go to new casino sites. If you deposit £10 you will get a huge £40 to use at the games of the online casino.

400% bonus

It is very seldom you find 400% bonuses – but we have seen UK casino offer Deposit £10 – Play with £50 offers. Sometimes there will be a special offer for an anniversary or a special holiday, but these offers are available if you look for them.

500% bonus

To find a 500% bonus is almost as hard as hitting the jackpot! However, there are casinos handing these offers out still. Many times the limit is low and the offer will be structured to something like deposit £20 and get £100 for free!

Larger bonuses

Bonuses larger than 500% are almost impossible to find but there are sometimes special occasion. On Casinomir we try to find them and we also recommend you to look into other types of bonuses such as cashback and wager free spins. They can sometimes be as valuable as a deposit match bonus.

Different types of Casino Bonuses in the UK

Online casinos have come up with several types of promotional offers to attract and keep players on their sites. One of the most common methods is to offer bonuses to players. There are several different types of casino bonuses aimed towards UK players. Some are for new customers only and others are given to reward loyal players. Here are some of the most common casino bonuses on UK sites:

Best types of casino bonuses infographics
  • No Deposit Bonus – Bonus without depositing money, read more here.
  • Free Spins – Bonus that gives you a number of spins on a specific slot or provider, see detailed information here
  • Welcome Bonus – The first bonus you get after signing up at a casino.
  • Reload Bonus – A bonus you get as an existing player.
  • Monthly or Weekly Bonus – Special weekly and/or monthly promotions.
  • VIP Bonus – A personal bonus you get as a loyal customer.
  • High Roller Bonus – A very rare bonus only for the top selection players at a casino.

The last four types of casino bonuses are the ones mainly aimed at existing players. Just like any other business, casinos want to reward their most loyal customers and give them incentives to remain members of their site. No casino wants their regular players to move to the competition. Great loyalty programs, VIP offers, and high roller bonuses are all good reasons to stay loyal to a casino that you trust and enjoy. Read our casino reviews to find out more about each casinos VIP, loyalty and high roller bonuses.

Welcome Bonus

Casino welcome bonuses are a way for UK casino sites to attract new players and allow you to try out some of their games and services. This means that you don’t need to use your own money on the first round of games, and you can try out a variety of different games to see which ones you like best.

Welcome bonuses are now so widely used by online casinos that it has basically become mandatory for any new or established casino to offer these if they want to stay in business. 

A popular online casino welcome bonus offered to players in the UK are free spins that can either be used on specific slots, usually the sites flagship games, or on any games offered on the site. Welcome bonuses can also take the form of credits given to you by the casino, and will mostly be equal to a predefined percentage of your initial deposit.

The most frequent online casino welcome offer is a 100% bonus but it could easily be more than that. At Casinomir we scour the internet to find you the best online casino welcome bonus in the UK.

Sign-Up Bonuses for Online Casino

A casino sign-up bonus is offered to players once they sign-up to an online casino. This type of bonus usually requires you to verify your email address. This verification is important for the casino to establish that your email address is active.

Some casinos sell this information onto other businesses so it is important to check the terms, conditions and privacy policy of the online casino before you sign-up and claim your bonus.

Casino sign-up bonuses are usually similar to welcome bonuses, offering free spins and credits, and giving you everything you need to get a feel for the games on the site and help you decide where you want to play. 

Free spins can either be used on the sites flagship slot games, or on any games offered on the site, depending on the terms of the casino sign-up bonus.

Casino sign-up bonuses given in the form of credits are usually equal to a predetermined percentage of your initial deposit, usually 100%. Casinomir checks a wide variety of online casino sites every day to ensure that we always bring you the best sign-up bonuses in the industry.

Bonuses can increase the chances of winnings when playing casino online for the first time

Deposit Bonuses for Casino

Online casinos offer various deposit bonuses. The most common is the first deposit bonus and this is relatively self-explanatory. When you make a qualifying deposit into your new online casino account, you will receive a first deposit bonus from the casino in the form of a top-up of your account with a predetermined number of free credits or free spins.

This encourages players to deposit as much money into their account as possible when they start playing in order to take advantage of the best first deposit bonuses and other deals. Almost all casinos offer first deposit bonuses but some offer up to five deposit bonuses.

Casinomir helps you compare all the different deposit offers out there so that you can find the best online casino deposit bonuses at both new and established casinos.

How do you get the Best Online Casino Bonus?

The casinos thinking behind these super bonuses is that once you have become familiar with their site, and if you enjoy the games, you will continue playing there long after you have exhausted your welcome bonus. And of course just because you have used your welcome bonus, doesn’t mean that you won’t get any more great offers and online casino promotional bonuses.

Any casino that wants to ensure the loyalty of its players will offer a variety of bonuses, promotions, campaigns, contests and much more to ensure that you remain a loyal member of their site. These types of loyalty bonuses are common practice at UK online casinos.

With so many super casino bonuses on offer, it can be tricky for players to find the best online casinos, with the greatest promotions and bonuses. It can be hard work to sort the good from the bad, but that is where Casinomir comes in.

We have found a way to simplify the process for our players by listing all the best online casino bonus offers in one place. On our site, you will find a comprehensive list of all the free spins and deposit bonuses, and all you need to do is pick your favourites and start playing!

Casino Bonus Codes

At Casinomir we have fostered strong and long-standing partnerships with our partner casinos. These partnerships give us many advantages that we are able to pass on to our players. Each week we negotiate new and exciting deals with our partner casinos. But in order to activate these exclusive online casino bonuses, you may have to enter an online casino bonus code.

These bonus codes ensure that our bonuses remain exclusive to us and are only accessible to our players, making it extremely worthwhile to register an account at your favourite online casino through our site. This is the one and only way to ensure that you get your hands on our exclusive online casino bonus codes. In addition to great deals at established casinos, we also offer online bonus codes to activate exclusive deals at new UK online casinos before anyone else. 

Fortunately activating a casino bonus code is simple. Gone are the days where you have to type in your exclusive bonus code. Now most online casinos are designed and programmed to automatically activate your casino bonus code when you register on a site or make your first real money deposit. This simplifies the process and enhances the playing experience.

Casinomir will also notify you if you are required to enter a specific bonus code when you sign up to an online casino through our site. Not only does Casinomir help you find the best online casinos, but our exclusive casino bonus codes offer you the opportunity to win big with our partner casinos.

How Casinomir helps you to Find the Best Bonus Offers and Promotions

At Casinomir our aim is to help players find the best online casinos with the best bonus offers. We want all our players to be happy and enjoy their online casino experience so we strive to continuously offer the best casino bonuses. This increases our player’s chances of winning, which obviously increases their enjoyment of online gambling.   

We do extensive research and try to keep you up-to-date on the best casino bonus offers and guide you towards the top gambling sites in the UK. We believe that if you can find, and take advantage of the biggest bonus offers, you can drastically increase your chances of winning.

This applies to welcome bonuses, which allow you to win big when you try out new online casinos for the first time, and promotional deals for loyal players. Besides Casinomir, another good source for finding the best online casino bonus offers is casino-bonus.com

Now that you have all the information you need about casino bonus offers in the UK, take a chance today and make the most of the top offers in our online casino list.

With the simple click of your mouse, you can sort all the casinos in order of the highest bonuses or the highest amount of free spins. Make this year yours by hitting the next big jackpot. Playing online casinos has never been more fun and we wish you the best of luck!