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Author: Steve Ashwell, Last Updated: May 3th, 2022

400% First Deposit Bonus UK Casinos

The bigger the bonus, the more you can play. So if you’re looking for a 400% first deposit bonus, you’ve come to the right page. We’ve rounded up a whole bunch of platforms that are capable of giving such generous rewards.

We’ve made this ranking, so you don’t have to waste time looking for the platform you want. All of the gambling brands in it accept players from the UK. So if you are registered on the Gamstop register, you can still play casinos from our ranking!

We rank top platforms with high protection of customer data, with legal licenses and certificates. All games are certified by the vendors, which means their maths, RTP is 100% honest.

➡️ 400% Bonus Casinos List Updated: May 2022
➡️ Casinos are licensed and tested by independent gambling auditors eCOGRA ✅ iTech Labs ✅ Gaming Laboratories International

 

Offer of the Day
Available for players from UK
Black Magic casino
400% UP TO £1000
£20
45x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Big Cashback
  • Credit Cards
  • Many Game Providers
Offer of the Week
Rating:
4.9 / 5
Available for players from UK
Rouge casino
400% up to £2000 + 100 free spins
£20
50x
MGA
18+, new UK players only, be   GambleAware / T&C Apply
  • Secure Casino
  • 5000 Welcome Package
  • More Than 500 Classic Automata
Offer of the Month
Rating:
4.8 / 5
Currently available to UK players
24casino.bet casino
400% up to £2000+ 100 free spins
£20
50x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • 6000 Welcome Package
  • 5 Welcome Bonuses
  • Funny Games
Bonus is Cashable Non Gamstop Casino
    Rating:
    4.8 / 5
Pulp Casino
400% Up to £2000
Free To UK Players
£20
50x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • 3X Deposite Bonus
  • Live Dealer
  • Popular Game Providers
Details
Pulp Casino
EN
GBP, EUR
0-120 hours
4000
700%
-
Share Stars Ltd
Description

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Bonus is Cashable Non Gamstop Casino
    Rating:
    4.5 / 5
Fancy Reels casino
450% up to £3000
Games to UK players.
£40
40x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Fresh Casino & Sportsbook
  • 24/7 Player Support
  • Easy To Use
Details
Fancy Reels casino
EN
GBP, EUR
0-36 hours
3000
450%
-
No information
Description

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Bonus is Cashable Non Gamstop Casino
    Rating:
    4.5 / 5
KaboomSlots casino
450% up to £3000£
Avaliable for player from the UK
£40
40x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Regular Tournaments
  • Lottery Draws
  • Instant Withdrawals
Details
KaboomSlots casino
EN
GBP, EUR
0-36 hours
3000
450%
-
No information
Description

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Bonus is Cashable Non Gamstop Casino
    Rating:
    4.4 / 5
Pyramid Spins casino
450% up to £3000
Suitable for use by players from UK
£40
40x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Authoritative Operator
  • Quality Spins
  • Small Withdraw Time
Details
Pyramid Spins casino
EN
GBP, EUR
0-36 hours
3000
450%
-
No information
Description

Play now! Play now!
Bonus is Cashable Non Gamstop Casino
    Rating:
    4.5 / 5
CasiGood casino
475% up to £3000
Focused on UK Players
£40
40x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Various Draws
  • Top Games
  • Perfect for VIP Players
Details
CasiGood casino
EN
GBP, EUR
0-36 hours
3000
475%
-
No information
Description

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Bonus is Cashable Non Gamstop Casino
    Rating:
    4.3 / 5
Captain Marlin casino
475% up to £3000
Suitable for UK players
£40
40x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Fresh Casino
  • New Slots
  • Fast Paymants
Details
Captain Marlin casino
EN
GBP, EUR
0-36 hours
3000
475%
-
No information
Description

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Bonus is Cashable Non Gamstop Casino
    Rating:
    4.2 / 5
Slots Charm casino
450% Up To £3000
Available free to UK players
£40
40x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Good Design
  • Fast Support Player
  • Credit Cards
Details
Slots Charm casino
EN
GBP, EUR
0-36 hours
3000
450%
-
No information
Description

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Bonus is Cashable Non Gamstop Casino
    Rating:
    4.1 / 5
Mister X casino
450% up to £3000
Available UK Players
£40
40x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Multilanguage Casino
  • Cashback 35%
  • Easy Payments
Details
Mister X casino
EN
GBP, EUR
0-72 hours
3000
450%
-
No information
Description

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Bonus is Cashable Non Gamstop Slot Site
    Rating:
    4.3 / 5
GoldenAxe Slot Games Site
450% up to £6000 +100 Free Spins
On offer to UK players
£20
35x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • New Slots Site
  • Many Free Spins
  • All Slots Games
Details
GoldenAxe Slot Games Site
EN
GBP, EUR, USD
24-120 hours
6000
450%
100
GoldenAxeCasino
Description

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Bonus is Cashable Non Gamstop Casino
    Rating:
    4.3 / 5
Slots Dreamer casino
400% Up to £1200
Enable for UK players
£25
45x
Curacao
18+, new UK players only, be   GambleAware / T&C Apply
  • Nice UI/UX
  • More 400 Slots Game
  • Accepts Cryptocurrency
Details
Slots Dreamer casino
EN, DE, FIN, NOR, POR
GBP, EUR, USD, CAD, NOK, AUD
0-72 hours
1200
400%
-
No information
Description

Play now! Play now!
📌 Number of Сasinos With 400% Bonus13+
🏆 Best 400% Bonus CasinoRouge Casino
🎯 Bonus400%
 Accepting Gamstop Players?Accept
💂 Accepting UK Players?Accept
⌛ Withdrawal Times15 min – 3 days
🔒 Safe and Legal YES – Licences
🎫 LicencesMalta Gaming License, Curaçao 
🎲 Accessible GamesSlots, Poker, Bingo, Roullete, Lottery
🎰 Type Gambling SitesCasino, Betting, Live Games

Best of 400% Casino Bonus Offers

Team experts pick on the 400 Casino Bonuses UK. Then, they research the gambling brands on their own: checking sites’ performance, customer support, quality and RTP of gaming products. We also carefully look for the T&C of advertised welcome bonuses.

400% first deposit bonus

Thus, the gambling brands with the high marks and nice website features make our ranking.

The Best Gambling Platforms from Our List:

TOP 5 Casinos With 400% Deposit Offer

We have selected dozens of platforms with a 400 casino bonus. But we want to draw your attention to the best websites to test first. So check them out, play some demos and decide whether or not you should stay with them.

Kaboom Slots

The platform has been up and running since September 2021. You can play casino products, lotteries, bet on sport games, esports. The minimum deposit is €40. Here you can earn a 400% welcome bonus and no dep prizes for registration (cash and free spins).

Pyramid Spins

An even bigger reward is available here – a 450% bonus on your first 3 deposits! The platform has been running since 2021 and offers many Egyptian-themed games. It hosts games created by more then 80 providers. The min deposit to activate the prize is €40.

Admiral Shark Casino

Here you will find more than 1000 gaming products from Playtech, NetEnt, Quickspin and other manufacturers. A deposit of €50 is required to activate your bonus.

Captain Marlin Casino

Another new brand launched in 2021. The brand specializes in slots, tables and live games. The newbie kit is divided into 3 deposits. The maximum you can get is €3,000. To activate the reward, you should to deposit 20 euros.

Black Magic Casino

The brand was launched in August 2021. The welcome bonus is 400% up to £1,000. The minimum deposit is £25. That platform operates following a Curacao licence and offers nearly 1,000 casino games.

Other cool bonuses to 400% Casino Promos

If this 400% casino bonus doesn’t meet your expectations in any way, you may check out the platform with other bonuses.

Check out these pages for ratings of quality platforms:

Major Sides of Brands Having 400% Bonus3

Without a doubt, the 400% deposit bonus is an offer for improving the gambling pastime Thanks to the increased cash and free spins, you can play more games or make bigger bets. Both improve your odds on winning!

In addition, platforms with these bonuses have several other benefits:

  • Operators operate independently of UK legislation.
  • Thanks to an international license, the platforms are well protected.
  • The games are available in Europe and the United Kingdom.
  • The platforms are not connected to Gamstop.
  • Thousands of quality games from well-known manufacturers.

Sites provide easy registration using the email address or social media accounts.

Minuses of Brands With 400% Deposit Match

Attractive casinos with 400% deposit slots bonuses have disadvantages:

  1. Some have significant wagers that are difficult to play.
  2. In addition, prizes can be sticky, meaning they cannot be withdrawn from your account. You can use them inside the casino.
  3. A limited set of payment systems.

Because the platforms operate under an international license and are not subject to a local regulator, legal issues can be strained.

Fast Answers to Questions

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Tell me, what's a 400% casino bonus?

It's a welcome bonus that you get for 1 or more initial deposits. That is, if you deposit €100, you get €400. So the sum at your disposal is 500 euros. Pay attention to the maximum amount of winnings from the bonus that you can withdraw from the site. That and other parameters can be found in the description.
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If I reside in the UK, can I get a 400% casino bonus?

We've gathered online casinos that offer rewards to all UK players. These international brands provide services to all residents of the country with no restrictions. Thanks to GamStop's no-registration scheme, you can play on these websites even if you are banned from other platforms.
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Tips to find sites with a 400% match?

The easiest way to find a site with a generous bonus is to check our ranking. We select the best platforms with the highest quality user experience.
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How to claim a 400% bonus several times?

You cannot claim multiple bonuses on the same gambling platform. But it is possible to register on several websites and get 1 bonus from each of them.
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What's the minimum sum to get a 400% bonus?

The minimum deposit depends on the conditions of the gaming platform. For example, some ask for £20, while others inflate the minimum to £50.
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Can players keep winnings when they earn a 400% bonus?

It depends on the requirements specified in the promotion. If you can meet the conditions and you still have winnings on your balance - then you can safely withdraw it to your card or wallet.
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