Best Online Casino Bonuses for 2020

Looking to grab an online casino bonus or two? Well, you’ve come to the right place. Below you will find all of our top-rated welcome bonuses ranging from free spins to deposit bonuses and everything in between. Each bonus has been tried and tested by one of our independent reviewers to ensure that you have access to only the fairest bonuses in the UK.


Offer / Bonus

Get £150 Bonus

No Deposit Bonus

First 3 deposits only. Min dep £10 1st an 2nd deposit, min £20 3rd. Max cumulative bonus £150 + 150 spins. Bonus match amount varies per deposit. Spins awarded on one of four chosen games. 30 x wagering on deposit + bonus. 50 x on bonus spins. 10 Max bonus conversion. £5 max bonus stake. Full T&C's apply.


Offer / Bonus


No Deposit Bonus


Offer / Bonus

Bonus up to £500

No Deposit Bonus


Offer / Bonus

400% up to £800

No Deposit Bonus


Offer / Bonus

Get £998 Bonus

No Deposit Bonus


Offer / Bonus

Up to £850 welcome Bonus

No Deposit Bonus


Offer / Bonus

Up to £200 Bonus

No Deposit Bonus


Offer / Bonus

£100 Deposit Bonus

No Deposit Bonus


Offer / Bonus

No Deposit Bonus


Offer / Bonus

Get £400 Bonus

No Deposit Bonus

The newest casinos in our compilations will contain the best competitors available within the industry for you. We will ensure that all your needs for bonuses are met in addition to making sure the safety precautions that you need for you and your gaming experience are fully integrated within each and every casino. Quality casinos are very important to us, we want to make sure that you are here to play, without the need of worry or doubt to ever come across your own mind.

All the lists compiled within our lists are fully cooperative with the UK Gambling Commissions, meaning they are regulated and completely safe to play on. All your money, information and sensitive details are fully hidden and kept secure, away from any third parties that should wish to compromise your information along the way.

There are the most popular sites that support the biggest game developers, like that of Microgaming, NetEnt, Playtech and so much more. All these sites will include the latest games and bonuses that can be applied to them upon your arrival. So, what are you waiting for? Check out our lists of new casinos to find the latest gems out there that you could be potentially missing out on.

Our Guide To The Best Casino Offers:

While it’s true that when claiming bonuses from online casinos it can be quite a tricky affair, it’s almost like finding a needle in a haystack especially with their being so many casino sites to choose from nowadays. This is then further complicated by all the wordy Terms and Conditions attached to anything you do making it even harder for you to cash out your winnings when you get around to it.

What types of bonuses are there?
Long gone are the days when the only type of casino welcome bonus available was a matched deposit. While these are still around today and still quite popular in order for online casinos to bring in new punters and not lose out to their competition, they seriously had to diversify their offerings to attract as many players as possible. Whether this is using free spins and no deposit offers to lure in new punters, some even offer welcome packages spanning your first 5 deposits each accompanied with a further bonus for you to claim. In short, the types of casino bonus available to you are Deposit Bonus, Bonus Spins, No Deposit Offers and Welcome Packages.
What types of terms and conditions should I be looking for?
One thing you certainly need to keep in mind when claiming “free money” is that nothing in life is free and casino bonuses are no different. While you may be thinking getting that extra £500 on top of your £100 deposit sounds good because you’ve got more to play with this is rarely the case. One of the key terms that you need to keep your eye out for is the wagering
requirement. All bonus money from £10 to £1000 will require you to turn your bonus over a set amount of times before you can even withdraw any of your winnings. The majority of the time your own cash will be locked in until this is done, or you’ve lost it all (starting to sound less enticing right?). The next one you need to look at is whether your original deposit is considered in the wagering requirement, If so, this could mean you need to wager even more money before you’ve got a chance of cashing out.
Is every game considered equal?
Now this ties in nicely with what we’ve mentioned previously in regard to wagering requirements. While we the punter may feel that as each game is a risk that it should be considered equally. This is certainly not the case in the casino’s eyes. They structure their bonuses so that only slots count 100% towards their wagering requirement. Yup, you heard us right. If you thought you could get your bonus money and deposit by just betting black on roulette well this only counts as 25% in most places. Meaning you’d need to multiply that turnover which could have been 30 by 4. 120 X wagering – that’s just CRAZY!
Does this include free spins?
Fans of free spins bonuses rejoice, well that all depends what casino you decide to sign up to in the end. However nowadays there are actually 3 types of bonus spins now available for you bonus hungry punters:

  1.  No deposit free spins: Pretty self explanatory really, as soon as you register your account with a casino you’ll be given a set amount of free spins to play with. There normally have a lot of restrictions applied such as only available on certain slots, wagering requirements etc.
  2. Wager free Spins: These are a pretty new free spin to the online casino bonus market. Long gone are the wagering requirements attached to the standard set. This means you can keep what ever cash you win on your free spins as there’s no wagering requirement attached to them. We’ve even heard of some people hitting slot jackpots with these types of spins which is certainly nothing to complain about.
  3. Deposit spins: You’ll find these type of spins attached to most welcome package, while they are essentially “free” they are only added to your account after you’ve made a deposit or completely a stage of the welcome package.
Now I've signed up what else is there to claim?
The sign of a good casino is one that looks after both their new and existing customers. The fun shouldn’t stop once you’ve got your welcome offer. We always make sure that every casino we sign up to looks after you. This means we pay special attention to what’s on offer after your bonus money and bonus spins. This means reload bonuses, promotional offerings and loyalty points which can be cashed in for prizes and more bonuses.

Claiming more than one casino deposit bonus?

So you’ve signed up to one casino, claimed their bonus and wagered through and now you’ve got your money. Should you then stay at that casino for the rest of your life as loyalty does sometimes pay off? Well here at MobileCasinoKings we feel it’s best to have a few casino accounts, this is because it allows you to benefit from a range of no deposit bonuses and promotions that will be sent your way.  You may find you like different aspects of each casino; some may have a better variety of slots but don’t send out that many promotions whereas others may be great with promotions but not have the best selection of slots. This allows you as a player to benefit everything that the online casino world has to offer meaning you’re not missing out.

Is there such a thing as too many bonuses?

While we are here to recommend you casino sites to sign up to, we definitely believe that there is a thing as too many accounts. Last thing you want is your email account being clogged up with random promotions making it difficult to find the good from the bad. It’s best to have around 5 sites that you like to play at and then occasionally sign up to new casinos when they push out an offer which is too good to refuse.

What’s the best casino bonus for me?

This is a question that’s impossible for us to answer, every single one of us is different in what we look for in a casino bonus. Whether we’re just signing up to have a bit of a play with the latest slots then perhaps a free spin or no deposit bonus is better suited for you or would you rather claim one of the big bonuses, so you’ve got a greater chance at winning? All we can really do is tell you the bonuses that we feel are the best and then it’s down to you to select an offer which suits your playing style keep in mind that every bonus we recommend has been vetted and personally tested to ensure they offer a fair chance of winning.

Mobile Gaming

Mobile gaming has taken a storm within the last decade-why? Because, they have developed and evolved their software technology and procedures, incorporating their latest HTML5 technologies within their games. This allows you as a player to enjoy the gaming and bonuses that casinos provide from your very own mobile phone! Mobile gaming can be integrated as instant play via the web browser of your favourite casino or within the application/ app of the actual casinos themselves.

Most casinos that are credible and established, will have an app that can be downloaded directly from the Appstore or Android Google Play store. There are many slot games that you can dive directly within, in addition to Live Casino games that can still be accessed from your very own mobile device. All you need is a secure internet connection and you are pretty much good to go! Their in-chat features will allow you to chat to your fellow gaming and gambling community wherever you are, receiving notifications linked directly to your mobile device and experience all the land-based hype from the comfort of your own portable device.

Also, if you didn’t know already, casinos online offer UK players the opportunity to seize the best casino bonus opportunities particular designed for players that play and gaming on their mobile phone. We have sites that will give you, even more, a bonus pick me ups for you to enjoy, just because you have a mobile phone! Casinos want to advocate and propagate users to go for playing within their app and gamble. Therefore, they create bonuses specifically designed just for mobile users. Make sure you check out our mobile casino bonus catalogue review compilations. These lists will go into detail for you of the bonus features that are available for you to play with from any iOS and Android phone system.

Mobile casinos are here for you when you are on the go and don’t feel you can sit at home and play from your own desktop computer. It is the perfect and optimum option to have when you are travelling or commuting to and from work. Make sure you take up this method of gambling if you haven’t already. Expect better graphics and a greater interfacing system within the game structure presented from the application on your phone. Not forgetting to mention that the loading speeds of the gaming applications are so evolved, you will wish that you had checked them out much sooner!

Safety and Fairness

Playing in a safe environment is just as important to us as it is to you. We want to make sure that all your gameplay will never be vulnerable to ever feeling insecure and safe. For that reason alone, we have reached out further and made the extra effort to ensure that all your gameplay forms the top selected casinos out to play on. However, it is easier said than done, to provide you with all the safe casinos without giving you the background knowledge that we possess that helps us make such certain selections within the casino industry. They are as follows:

Wagering requirements

Did you know that there is a usual average or standard as they would call it for wagering requirements across online casinos for the bonuses within the UK? Usually casinos put a wagering bonus requirement of around 4x the bonus amount set, yet there some casinos out there that set their wagering bonus requirements to ridiculously high amounts like 40 or 50x, which let’s face it, within your usual month period prior to expiry, it will be very difficult for you to achieve the means to keep your casino 2019 bonuses within your casino online wallet.

Contact details and customer care information

Having the correct outputs to contacting the casino agents directly is definitely essential for defining whether or not the casino bonuses are safe to use within your casino journey. It is usually a must for casinos to include more than 2 methods of reaching them. If you cannot see a live chat, helpline, email address etc. then definitely have your precautions and trust issues against it. It is defiantly not a green flag to go-quite the opposite.


SSL encryption is a very basic necessity that casinos should most defiantly feature. Usually, it will present itself in the most basic and easiest way to spot possible. Sites should always have the ‘lock’ sign within the website URL address, following the typical ‘https’ that comes in front of the URL. Don’t see this? Definitely take a step back and don’t trust the website.


Make sure to check if the casino has the correct licensing within its site because they will be guaranteed you instant safety and security due to their regulation policies.

Advantages & Disadvantages to welcome bonuses

There are a fair few advantages and disadvantages to consider when debating claiming a bonus:


  1.  More money to play with. This means you’ve got more chance to win and more chances to hit the jackpot. It also allows you to extend the amount you wager each spin instead of betting small you can then bet big and betting big means you can win big.
  2. Allows you to play a greater range of slots as you’ll have more money to spend so won’t mind trying out something new. This leads you to discover new slots and table games which increases the fun aspect of an online casino.


  1.  You’ll be tied into wagering requirements and any other terms and conditions that are attached to the offer. This means no being able to withdraw your funds or use them on slots that are outside of the promotion. If you do, try to break the rules then the online casino is in well within their rights to close down your player account and withhold any winnings so you’re literally playing by their rules.
  2. Casinos will limit the amount of time you have to clear your wagering requirement. This means if you don’t fulfil it in the set amount your bonus and your deposit will be taken off you. So, if you’re hoping for a casual playtime with your bonus where you can leave it for a few weeks and come back as you please this certainly won’t be the case.

Best Payout Online Casino UK

We have a number of sites that have some of the best payout options online. Our team check this every week to ensure we are bringing you the best online casino payouts available!

Should I really claim a bonus when there are so many T&Cs?

Once again this is completely down to personal preference, bonuses aren’t free cash so don’t treat them as such. Treat it as a loan which unless you’re able to clarify what’s required, it’s probably not worth your time. Instead, find an online casino which satisfy your other needs.

Top Casinos

Spin Slots Casino

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Slots Rush

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Deposit £10 Get £80

PH Casino Review

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Classy Slots Casino Review

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Bronze Casino

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Fun Casino Review

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Wild Wins Casino Review

Get £400 Bonus

The Online Casino Review

Get £500 Bonus

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