Best 300 Deposit Bonus Casinos in the UK

Want to know where the best 300% casino bonus offers are hiding? The ultimate selection of 300% deposit bonus offers for UK players is right here, and claiming these bonuses is actually much easier than you think. This is the only guide you will ever need to these casino bonuses with all the tips and tricks you need to know – all in one place. Read it and find out how to make the most of any 300% deposit bonus!

Last Updated on 25/10/2021 by George Mizzi

300% Deposit Bonus UK

When looking for a 300% deposit bonus, UK players have the advantage of choosing from some of the best, most reliable offers on the market. These are among the best casino bonus with deposit offers since UK casinos fall under stricter regulations and are therefore safer and more trustworthy than many of the other platforms out there. But onto the 300% deposit bonus, it’s a fantastic type of promotion that offers to credit you with triple the amount you have deposited. Such casino offers aren’t as common as some of the other types of match bonuses, but there’s still a very decent selection to choose from.

Typically, these types of deposit bonuses are included in welcome packages; hence they tend to cater to new players more often. And as such, they provide an excellent opportunity for players to benefit from extra funds at the casino. And that, in turn, can allow them to experience more of the games and spend more time at the online casino. So, in the end, it’s a win-win for both players and gaming sites.

You can also check out £10 no deposit slot guide if you prefer to get cash available for play rather than a percentage match of your deposit.

300% Deposit Bonus Casino – How to Pick the Best?

Choosing a 300% deposit bonus casino may seem like a chore if you don’t know what you’re looking for. But when you know the key factors to look out for on online casino sites, UK players can easily weed out the casinos that aren’t worth dealing with. And so, you’ll narrow down your options to include only reputable and trustworthy sites. So, the first thing you will want to pay attention to in a casino offering a 300% welcome bonus is its licensing. The UKGC must be the authority to have issued the license, and it must be active. Other aspects to look out for in terms of the casino’s safety include the means by which it ensures the protection of users’ data (i.e., encryption).

Other things to consider include the available payment providers. Make sure you see payment methods that you can use. Furthermore, the game selection is of importance, as well. Especially with slots sites, the game library should have an abundant assortment of quality titles and well-known providers. Make sure that you also see offerings that you already enjoy playing, as well as games you’ve been curious about trying but haven’t yet had the chance.

  • Licenses. Online casinos that wish to offer their services to players in the UK are obligated to be licensed by the UK Gambling Commission. So make sure that there is indeed such a license present on the online casino’s site. And it won’t hurt if there are licenses from other prominent gaming authorities.
  • Game Selection. The game library at the casino should include a variety of titles and game types, and most certainly, it should include the games you are interested in playing. Furthermore, make sure the titles available are from known developers or developers you are at least fond of.
  • Security. Online casinos handle sensitive information on a daily basis, including financial transactions and the personal details of their users. So it’s essential for them to have the means to protect this information accordingly, with the help of the latest encryption technology.
  • Payment Methods. The payment method section of the site is of great importance, too. It should include options that are available to you. But in addition to that, make sure those same options can be used both for deposits and withdrawals. Note the listed time frames and fees for each method, as well.


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Play Slots in Demo Or Choose a Real Mode with 300% Deposit Bonus?

Exploring online slots in demo and reading about them is all well and good, but the potential for getting real cash rewards is neglected. You can achieve that only through real-money gambling. To stake real cash on the game, we can recommend joining Casino Joy. The casino not only has great promotions (deposit match with reasonable wagering requirements) to extend your gameplay, but it can also keep you entertained long after you’ve had your fill of this slot. Make sure to check out our Casino Joy review for the latest bonuses and promotions.

300% Welcome Bonus – Which One To Choose?

Choosing a 300% welcome bonus may seem like an uneasy task if you have several options at hand. But it doesn’t have to be, and there are a few factors that you can assess to help you pick the best online casino welcome bonus.

So, once you have settled on a safe online casino with a 300% deposit bonus, the first thing you will want to do is read the bonus terms and conditions. Here you will find everything you need to know to determine whether or not the bonus is indeed worth your time. Start with the wagering requirements, as these will tell you how many times you need to stake the bonus amount. And consider these together with the time frame given for the fulfillment of the wagering requirements.

This is the most critical part in deciding whether a bonus is reasonable. But there are other things to keep in mind, too. For example, note the contribution weight of the different casino games. Also you need to consider the amount of your deposit, for such a high match percentage it’s not rare to be required to make a 20 pounds minimum deposit. To roll over the bonus faster, you will want to play games with a higher contribution weight. And if those games don’t include titles you like, then would the bonus really be any fun for you?

300% Casino Bonus Terms & Wagering

All 300% casino bonus offers will typically have some form of wagering requirements attached to them. And these are crucial to any bonus or promotional offer, as they are, to a more considerable extent, what determines whether or not the offer is indeed fair.

Unrealistically high wagering requirements, for example, should tell you to stay away from the bonus offer, as there’s no chance for you to cash out your winnings. And even if the wagering requirements seem average, compared to other offers – note the time frame you’ve been given to complete them. If it’s too short, then, once again, the offer will likely not be worth your while.

  • Wagering Requirements. The wagering requirements of any bonus tell you how many times you are expected to stake either the amount of the bonus or the sum of the bonus and deposit. Usually, the wagering requirements will be given as a number (e.g., x30, x35, etc.).
  • Time Limits. Bonus wagering requirements typically have a specific time frame attached to them, within which players are expected to complete them. For example, a standard amount of time for deposit bonuses is 30 days. And failing to meet the wagering requirements in time will usually result in the forfeiture of both bonus and winnings.
  • Game Limits. When claiming a bonus, it’s essential to know that not all games you play will have the same impact on the bonus roller over. With some, 100% of your stakes may count towards completing the wagering requirements, while with others, it may be less and even nothing at all.
  • Eligibility. Make sure that you meet the criteria that make you eligible to claim the casino bonus. This includes, in all cases, without exception, being aged 18 or older and having a registration at the online casino that is offering you the deposit bonus in question.
  • Win Limits. Sometimes, although this is rarely the case with deposit bonuses, it may still happen for there to be a cap on the amount you can win. This doesn’t have to be a complete deal-breaker, depending on how high that limit is. But it’s still better to seek out bonuses with no win limits.
  • Payment Method Restrictions. Some casinos may have restrictions on payment methods through which you can deposit, as far as bonus eligibility goes. This may have to do with the payment method not being available for withdrawals, for instance. So be sure to check if any such limitations may prevent you from claiming the offer.

Editor’s Choice Casinos for January:

Casino Planet
A great platform to get started on, no matter if you’re new to gaming or a pro. The user-friendly layout and fairytale theme create a cozy and welcoming atmosphere. The site greets new players with a generous first deposit bonus and free spins.
Casino Gods
The site has a bouncy design with vibrant colours, and a whole sea of different exciting titles to choose from. And on top of that, here players get to enjoy fast withdrawals and top-level welcome packages.
Spin Rio Casino
A very safe online gaming platform that’s already been around for a number of years and has a proven track record of fair play and excellent player treatment. The site offers a truly impressive selection of games.


300% Deposit Bonus UK Pros & Cons

When it comes to any 300% deposit bonus, UK players will notice that it will have both its benefits as well as its drawbacks. For example, the undeniable advantage of claiming such promotional offers is that they give you some extra funds to spend at the online casino. On the flip side, most of these types of deposit bonuses (with some very, very rare exceptions) have wagering requirements. So you will need to spend some time and effort to release any winnings you’ve made with the help of the bonus funds.


  • Additional cash for casino games
  • Substantial increase of your bonus balance
  • Can be used on almost all game types


  • Wagering requirements might be pretty high
  • Not all games contribute to the bonus rollover
  • Need to make a deposit

How to Claim an Online Casino 300% Deposit Bonus

Claiming an online casino 300% deposit bonus is easier than you might think. In fact, once you have chosen the online casino and its respective 300% deposit bonus, you’ve already done most of the heavy lifting. Here’s how to proceed from that point on.

1. Settle on a bonus. Compare your shortlisted bonus offers among each other and choose the one that best suits you.
2. Consider the bonus terms. Take the time to read the promotional terms and conditions carefully. And pay special attention to the wagering requirements, time limits, as well as the games with the highest contribution weight.
3. Create an account at the online casino. Use your genuine email address and personal details to register an account at the online casino of your choice. Confirm the registration once you’ve received the respective email from the casino.
4. Make your first deposit. Next, you will need to deposit in order to claim the bonus. Be sure to enter the relevant bonus code, if applicable.
5. Clear the bonus. Now you can start playing! And as you do, you will gradually complete the bonus wagering requirements.

Different Casino Bonuses You Can Claim

Casino bonuses aren’t limited to 300% match offers only. Quite the opposite, there are myriads of different types of bonus offers out there, depending on whom they’re intended for and what their purpose is. For example, while 300% deposit bonuses are usually included in the welcome offers for new players, there are many types of promotions aimed at the existing customers of the casino.

Deposit Bonuses

Deposit bonuses are arguably the most widespread form of casino bonus offer. But they don’t necessarily all have to be 300% match bonuses. In fact, perhaps the most common promotional offer of this type is the 100% deposit bonuses, and you are likely to see these at most online casinos. Then there are also the 200% deposit offers that fall right in between the two, both in terms of value as well as in the frequency at which you may come across them. And then, there are even larger deposit bonuses out there like the elusive 500% casino match offers.

Reload Bonus Offers – Play and Get a Reload Deal

Reload bonuses are one such very popular offer, and they essentially offer players a bonus on their subsequent deposits. These, too, come in a variety of sizes, so you can check out our list of best reload bonuses to see how varied they can be.

Cashback – Fixed Percentage back to your balance with each spin

Similarly, there are casino cashback offers that also cater to existing players. However, these are different in that they are usually given as a friendly gesture to players who’ve been on a lengthy losing streak at the online casino. Hence, they don’t abide by the same rules as regular bonuses and are, instead, more of a no-strings-attached offer.

Are there No Deposit Casino Offers this January?

Fortunately, the short answer is yes. In fact online casinoss offer such deals almost every month of the year. For example, you can check our latest free spins packages for UK players. These can commonly also be part of a larger welcome package, where the player receives the free spins immediately upon signing up. And in that case, they have a chance to get to know the casino a little before depositing and claiming the rest of the welcome package.

Loyalty Programs for Regular Customers

Typical examples are exclusive event invitations, merchandise gifts, and vacations. If you would like to see what types of  loyalty programs are currently available, fell free to read our loyalty casino bonuses guide.

Why Are 300% Deposit Bonus Offers So Popular?

300% deposit bonus offers are certainly a desirable treat for all sorts of players out there. And it’s no wonder! After all, you get to enjoy 300% of added value on top of the amount you’ve deposited. That is quadruple your deposit – all to be enjoyed on your favourite online casino titles. So, of course, players will be drawn to the large number, and it shouldn’t surprise anyone. Furthermore, casinos are well aware of how attractive the “300%” part of their promotion appears. And there’s more to it, as well.

Newest Casino Bonuses for January

US Players not Accepted
  • Live Games Available
  • Fast Withdrawal Times
  • Great Game Selection
18+ Full T&Cs Apply. New UK players Only. £10 min deposit. £5 max bet using bonus. 40x wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded.
US Players not Accepted
  • Variety of Game Providers
  • Live Dealer Games
  • Good Selection of Slots
18+ New Players.100% bonus on first deposit up to £50 & 20 bonus spins credited immediately for Book of Dead only.Min dep £20.Max bet £5.Max cash-out £250.40x wagering.Bonus expiry 30days.Spins expiry 2days.Game restrictions.T&C Apply.
US Players not Accepted
  • Wide Range of Currencies
  • Accepts Players from Many Countries
  • High-Quality Live Games
18+ Full T&Cs Apply. New UK players Only. £10 min deposit. £5 max bet using bonus. 40x wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded.


Explore Latest Casinos Published on Our Site


300% Match Bonus FAQs

What is a 300% casino match bonus?

A 300% casino match bonus is a bonus credited by the online casino upon your deposit. The bonus is worth 300% of your deposit.

Is it possible to claim a 300% deposit bonus as a new player?

Yes! Of course, it will depend on the exact promotion you are interested in, but generally, 300% deposit bonuses are intended as welcome offers for new players.

What’s the catch with 300% casino bonuses?

All such bonuses have what is known as wagering requirements, meaning that players are required to roll over the bonus before they can release their winnings. To do this, you need to stake the value of the bonus a specific number of times.

How can I wager my 300% deposit bonus faster?

The main tip for meeting the wagering requirements faster is playing games with 100% contribution weight to said requirements.

Are 300% casino bonuses really worth it?

They certainly are if you choose them correctly. Ensure they are offered by reliable online casinos and check to make sure the wagering requirements correspond to your personal gaming style. For a selection of 300% bonuses from top online casinos, you can check out the ones we’ve shortlisted for you.

What are some restrictions or limitations that 300% casino bonuses may have?

That will, of course, depend on the online casino and the particular offer in question. But examples of possible limits include potential payment method restrictions, win limits, game limits, etc.


Author: George Mizzi
Chief Slot Analyst
When it comes to slot games, no one knows them better than our chief slot analyst George Mizzi. George started playing video slots back in 2011, and since then, he became inquisitive about all things slots. He became entrenched in the mechanics of them and quickly became an expert in how slot games work.