400% Deposit Bonus UK - Best 400% Match Casino Bonuses 2025

Playing with bonus funds is what excites many casino players within the UK. And the gambling world is full of promotions which allow you to do so. Some of my personal favorites are the deposit bonuses. Especially those who give out big amounts of cash to play one’s favorite games. But if you’re wondering what’s a 400% welcome bonus, is there really such an animal and what’s important to know when deciding where to sign up next, I’m here to answer all your questions. And several more.

What is a 400% match deposit bonus?

The first deposit bonus is an offer where the casino gives you a certain amount of money when you credit a minimum sum into your account. When it's 400 percent, that means if you deposit £100, you'll receive a 400 pounds bonus. In some cases a part of your bonus will be given per a certain percentage of the amount wagered. For instance, if you deposit a certain amount (and let's use £100 again as an example), you'll get 400 pounds. But you may receive only £100 right away and then, after you wager, say, £50, you'll be eligible for the next part. Always check the bonus conditions prior to activating the offer to see exactly how the bonus money will be credited to your account.

How to pick the best 400 deposit bonus UK?

To find a reputable gaming website you won’t have to look far but it’s important to keep several things in mind and check for them. Those are:

• License
  Never play at unlicensed casinos. Look for websites that are under the regulation of the gaming authorities. In the country that is the UK Gambling Commission and some of the casinos have off-shore licenses by Curacao.
• Variety of games
  Think about what type of games you want to play. Do you have any favorites? Or you’re browsing for something new? Consider the collection which the casino has to offer and whether it’ll be a good enough fit for you.
• Payment methods
  See if your preferred payment method is accepted by the casino, how long do deposits and withdrawals take and what are their minimum and maximum limits. Always keep in mind that some methods don’t make you eligible for the welcome promo, so familiarize yourself with the rules before depositing.
• Bonus offers
  Sure enough, considering you’re looking for a 400% deposit match promo, you’re a player who wishes to gamble with interesting casino offers and some extra cash. Well, that means you’d do better if you find a gambling provider who not only ensures a top-notch sign-up bonus but many more offers, too. Such as a reload bonus, cashback, tournaments, free spins… and a VIP club, of course.

First deposit bonus casino: types and rules on how to play with 400 online casino offer

I cannot say that there’s too big of a variety of types of welcome bonuses. The standard cash offer is almost always featured and it can give you 100%, 200%, 300%, 400% deposit match and even more. But there are a few differences that might exist within the welcome promo. One of them is if anything else is included: free spins, bingo tickets, free bets for live casino games. Usually those come as a package but have different wagering required (or none at all).

A much bigger variety exists within the rules. For instance, some promotions might require 10x wagering; others might feature up to 60x rollover. With most of the casino bonuses the funds should be played through at slots but some differences might exist here also. Pay attention to the period within which you have to wager the promotion as well because if you miss to comply with the allotted time, you’ll lose the bonus and any potential winnings.

No deposit bonus offers

In some cases you'll receive a welcome promotion without having to deposit any money. This can be as a money bonus or free spins, usually with a lower amount and easier wagering terms. The best part of it is, of course, that you don't have to use any of your real money to activate this bonus.

First deposit bonus casino offers as part of a welcome package

You can also find casinos where the first deposit bonus may be part of a welcome package. With those offers you can claim a certain percentage on each of your first few top ups.

Claiming a first deposit promo offer: A step-by-step guide to get started with non gamstop casinos with 400 welcome bonuses

And now let me take you through a step-by-step on how to activate and use your promotional offer as a new customer. The steps are basically the same wherever you’re playing and the differences aren’t many.

1. Pick a casino.
2. Click on the button for registration (it might have various names but the intent is always clearly visible).
3. Fill in the required form (varies on a case-per-case basis).
4. Select which welcome offer you’d like to claim if asked to do it prior to signing up.
5. Complete the process and proceed to verification.
6. Go to the bonus collection and check the exact rules.
7. If needed, activate the offer prior to depositing. If a deposit is required first, credit a certain amount of funds into your account and opt-in on the promotion. Keep in mind that in some cases the bonus might be automatically added to your balance.

What’s left is just the wagering of the bonus funds.

Most popular games to play with 400 percent match welcome bonuses

The most popular online casino games that new players can check out with a first deposit bonus are definitely the slots. With the cash bonus you'd be able to try many of them (a slight amount of titles are excluded), including traditional and modern ones, with different themes (fruits, mystery, mythological, horror, etc). The free spins deposit bonus, on the other hand, often features some of the most popular titles, like Book of Dead, Big Bass Splash and others.

What to know about wagering terms and conditions at UK casinos that offer 400 deposit match bonuses?

And here I am, having already claimed my bonus and wondering what’s next… What should I do?

To start with, reading on the rules of the promotions is always a must. That’s where all the wagering requirements are. But don’t just skim them, actually read them. See what games you can place your bets on for them to count towards the roll over. Look at the times you’d need to play the bonus through: those might vary from just 10x to as many as 60x (most frequently found rule for wagering of the free spins winnings). Pay attention to how many time do you have to complete the rollover or you might find out, quite unexpectedly, that your bonus is no longer active much sooner than you’ve expected.

To make it easier to understand the various bonus terms, here's what to look for:

1. Minimum deposit: The minimum deposit amount required to activate a certain promotion.
2. Value of the bonus: How big of a sum you'll get; usually shown as a percentage. For instance, if it's a 400% match bonus, that means that if you deposit €100, you will get €400.
3. Maximum bonus value: The biggest amount which the casino will credit you. If it's £500, for instance, even if you make a first deposit at the casino worth £1,000, you'll still get £500.
4. Deposit exclusions: If you make your first deposit using a method that doesn't activate the bonus, you won't be eligible for the promo amount. This most frequently applies to Skrill and Neteller.
5. Wagering requirements: The number of times you need to roll the bonus and any winnings from the bonus spins over to be able to request a withdrawal.
6. Time limit: How long of a period of time you have to use the bonus and turn it over before it expires.
7. Accepted games: Which are the games at which the casino allows you to wager the bonus funds.

How to receive your winnings from the casino site?

Well, that’s probably the easiest part of them all. Sure, first comes the wagering and once you’ve completed it, you can request a withdrawal of the bonus and the winnings you’ve made with it. Remember, due to the rules of the UK Gambling Commission, you’d be able to request a payout of the sum of the deposit even if you haven’t rolled the bonus through.

Some non gamstop casinos that offer their services with off-shore licenses may freeze your deposit balance untill you've rolled the promotion over.

The process of withdrawing the bonus and any associated winnings after rolling them over is pretty much standard. You go to the cashier menu, pick withdrawal, pick an amount and confirm. In most cases you won’t be able to withdraw with methods you haven’t made a deposit with.

A full list of 400 percent online casino bonuses: Which best online casinos offer a 400 percent match bonus

I went through the most important terms of the bonus for UK players who're just making their first deposit. But now you might be wondering where to find a high bonus. Well, I'm going to show you the best non gamstop casinos (and some gamstop ones) which allow you to claim a high amount of bonus money.

Cosmobet: The best casino to get a 400 percent deposit bonus

A great casino 400 bonus that can be worth up to £2,000 and comes with up to 1000 free spins. This makes them a top casino without gamstop for UK players who'd like to get a big bonus with a small investment.

Velobet: Another wonderful casino bonus UK (free spins included, too)

Even though their welcome offer is just sligthly less than 400 bonus, they credit you a great bonus package for a total of 330% match on your first three deposits along with 300 free spins.

Goldenbet: Yet one more of the best first deposit bonus offers

New casino players here get a wonderful 400 percent match offer which is credited as a welcome package of 100% on each of their first four deposits. The bonus gives 1000 free spins, too. 

Rolletto: Rolleto casino gives up to £5,500 on your first three deposits

They may not be giving out a 400 percent deposit match but they give you 150% on your first deposit (up to £500), 50% on your second one (up to £2000) and 25% on your third one (up to £3000) for a total bonus amount of £5,500.

888 casino: They might not offer 400 match on your first deposit but they credit you 1000 free spins for a £10 top up

At 888 casino you won't find a cash bonus of 400 percent but if we calculate the percentage of free spins you'll get for a £10 deposit, it becomes an even better deal. Because for just £10 deposited and wagered you'd receive 1000 free spins. They are available on some of the Pragmatic Play slots and to claim them you only need to put in the promo code WELCOME100FS on your initial deposit.

Responsible gambling with 400 casino bonus offers

If you don’t want the fun to turn into an addiction, you’ll have to be careful while gambling, even with bonus funds. So, keep in mind that any licensed casino must offer the following tools which can help you be more responsible:

1. Deposit limits: Those can be set per day, week or a month and usually, after you’ve put them into place, even if you choose to increase them, there’ll be a hold-up period before the new limits are approved.
2. Reality checks: Pop-up notifications showing up after you’ve spent a certain period of time playing.
3. Time-outs: A temporary account lock-up so that you cannot access it.
4. Self-exclusion: The option to forbid yourself from playing at the casino for a period of time between 6 months and 5 years.

Along with those, if you feel your gambling is getting out of control, you can seek help with any of the relevant organizations within the country. Remember, non gamstop casinos also feature those responsible gaming tools, so make use of them if needed.

Alternatives To 400% Deposit Bonus Offers

The people who are interested in bonuses will be very interested in learning whether or not there are any other deposit bonuses available. You are in luck because you have the opportunity to claim a variety of offers, including the following:

• 100% Deposit Bonus
• 200% Deposit Bonus
• 300% Deposit Bonus
• 500% Deposit Bonus

400% match first deposit bonuses: Final words and what to remember about 400% bonus casino sites?

A 400% deposit match is quite the great offer for new players who’re looking for a new casino to sign up at. You get more bonus funds and more time to play without the need to invest as much. But, as always, be mindful of the t&cs to ensure you know what exactly the promotion offers, how to claim and wager it and how much time you have to roll over the bonus amount.