400 Casino Bonus UK Casinos

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Are you looking for quality casinos with the best casino bonus? You’re in the right place if what you’re looking for is a 400% casino bonus or one that offers up to £400 in bonus funds.

Naturally, we’ll explain how these promotions work and what they have to offer. You’ll also learn why you should choose a 400 bonus casino and list both of its pros and cons.

List of All 400% Deposit Bonus Casino Sites

Unfortunately, there aren’t a lot of 400 bonus casino UK sites out there. For one, this type of bonus is not as common as a 200% deposit bonus or another kind of offer promising lower amounts. It’s simply too big and covers so much cash that not all casinos can afford to offer it.

This is why we went above and beyond, checking countless UK and non-UK casinos that accept UK-based players to find the ones with this bonus. You can find the results of our hard work below.

Casino
Rating
Why to Bet
Bonus and Code
Mystake Casino
Mystake Casino
8.2/10
  • Not committed to Gamstop
  • Gambling with credit cards
  • Swift & neat KYC verification
  • Not committed to Gamstop
  • Gambling with credit cards
  • Swift & neat KYC verification
Lucky Barry Casino
Lucky Barry Casino
8.4/10
  • Credit cards allowed
  • Not part of Gamstop
  • 35+ live tables
  • Credit cards allowed
  • Not part of Gamstop
  • 35+ live tables
Goldenbet Casino
Goldenbet Casino
9.3/10
  • Non-Gamstop
  • Curacao license
  • Accepts credit cards and Bitcoin
  • Non-Gamstop
  • Curacao license
  • Accepts credit cards and Bitcoin
Mr Sloty Casino
Mr Sloty Casino
8.1/10
  • Not on Gamstop
  • Payments with credit card
  • Swift KYC process
  • Not on Gamstop
  • Payments with credit card
  • Swift KYC process
Freshbet Casino
Freshbet Casino
9.5/10
  • Curacao license
  • Accepts cryptocurrencies
  • 3.000+ games
  • Curacao license
  • Accepts cryptocurrencies
  • 3.000+ games
Slots Muse Casino
Slots Muse Casino
9.1/10
  • Not part of Gamstop
  • 90+ providers
  • 4000+ Games
  • Not part of Gamstop
  • 90+ providers
  • 4000+ Games
Shiny Joker Casino
Shiny Joker Casino
8.3/10
  • No-Gamstop casino
  • Accepts credit cards
  • Accepts cryptocurrencies
  • No-Gamstop casino
  • Accepts credit cards
  • Accepts cryptocurrencies
Bonus Strike Casino
Bonus Strike Casino
9.0/10
  • Up to 725 free spins
  • Slots & lottery competitions
  • Open to the UK
  • Up to 725 free spins
  • Slots & lottery competitions
  • Open to the UK
Rolletto Casino
Rolletto Casino
8.1/10
  • Not on Gamstop
  • Credit cards allowed
  • Simple verification
  • Not on Gamstop
  • Credit cards allowed
  • Simple verification
Richy Fish Casino
Richy Fish Casino
8.4/10
  • 475% bonus on first deposits
  • Weekly prizes
  • Free spins
  • 475% bonus on first deposits
  • Weekly prizes
  • Free spins
Papaya Wins Casino
Papaya Wins Casino
8.2/10
  • Huge selection of games
  • Dedicated sportsbook
  • Not on Gamstop
  • Huge selection of games
  • Dedicated sportsbook
  • Not on Gamstop
Scarabwins Casino
Scarabwins Casino
8.0/10
  • Non Gamstop casino
  • Free spins at registration
  • 90+ software providers
  • Non Gamstop casino
  • Free spins at registration
  • 90+ software providers
Prestige Spin Casino
Prestige Spin Casino
8.2/10
  • Thousands of slots
  • Accepts UK players
  • Solid 475% welcome package
  • Thousands of slots
  • Accepts UK players
  • Solid 475% welcome package
Platinum VIP Club Casino
Platinum VIP Club Casino
9.0/10
  • Not a part of Gamstop
  • Credit card payments
  • Easy verification process
  • Not a part of Gamstop
  • Credit card payments
  • Easy verification process
Yetiwin Casino
Yetiwin Casino
7.9/10
  • Not on Gamstop
  • Accepts credit cards
  • 3-step Welcome bonus
  • Not on Gamstop
  • Accepts credit cards
  • 3-step Welcome bonus
WG Casino
WG Casino
8.2/10
  • Not on Gamstop
  • Accepts Cryptos
  • 3.000+ games
  • Not on Gamstop
  • Accepts Cryptos
  • 3.000+ games
Twister Wins Casino
Twister Wins Casino
8.1/10
  • Thousands of top games
  • Big welcome package
  • Not on Gamstop
  • Thousands of top games
  • Big welcome package
  • Not on Gamstop
Lady Linda Casino
Lady Linda Casino
8.8/10
  • Not signed on Gamstop
  • Credit cards accepted
  • Simple verification process
  • Not signed on Gamstop
  • Credit cards accepted
  • Simple verification process
Voodoo Wins Casino
Voodoo Wins Casino
8.0/10
  • Not registered in Gamstop
  • Visa and Mastercard payments
  • Fast verification process
  • Not registered in Gamstop
  • Visa and Mastercard payments
  • Fast verification process
Richy Reels Casino
Richy Reels Casino
8.1/10
  • Juicy 450% casino welcome package
  • Sports & esports deposit bonuses
  • Multiple accepted cryptocurrencies
  • Juicy 450% casino welcome package
  • Sports & esports deposit bonuses
  • Multiple accepted cryptocurrencies
Patrick Spins Casino
Patrick Spins Casino
8.1/10
  • Not Signed Up to Gamstop
  • Visa & Mastercard accepted
  • Bitcoin accepted
  • Not Signed Up to Gamstop
  • Visa & Mastercard accepted
  • Bitcoin accepted
Red Lion Casino
Red Lion Casino
9.3/10
  • Not on Gamstop
  • Credit cards allowed
  • Easy verification
  • Not on Gamstop
  • Credit cards allowed
  • Easy verification
Mister X Casino
Mister X Casino
8.0/10
  • Accepts credit cards
  • Accepts Bitcoin
  • 2.000+ games
  • Accepts credit cards
  • Accepts Bitcoin
  • 2.000+ games