400% first deposit bonus

A first deposit bonus is a must-have promotion for new signups, and Brits find it at just about all UK online casinos. However, only a few have offers as lofty as 400% in bonus money. It’s a shame since this promotion only comes around once for a player at any given casino, even in Non Gamstop Casinos. In fact, returning player deposit bonuses, i.e., reload bonuses, rarely approach 400%.

Below you will find an overview with the best 400% casino bonuses of 2024

What is a 400% First Deposit Bonus?

A 400% first deposit bonus is a promotion in which an online casino matches each £1 real deposit with £4 of bonus money. Therefore, a deposit of £100 awards £400 in bonus money.

Each operator defines the maximum amount of bonus money permitted. For example, the NonStop Casino 400% first deposit bonus has a massive £3,000 maximum. Therefore, a player receives bonus money on the first deposit of up to £750 (£3,000/4).

400% Bonus T&Cs and Wagering Requirement

The best 400% casino bonuses strike a player-friendly balance between what they offer and the strings attached. Therefore, before claiming a 400 casino bonus on the first deposit, we recommend combing through the specific and general bonus T&Cs for key info:

  • Maximum bonus money: Every promotion of this type caps the maximum bonus amount awarded.
  • Qualifying deposit methods: An online casino may exclude certain payment provider deposits from a first deposit bonus. For example, first deposit bonuses sometimes exclude Neteller and Skrill payments.
  • Minimum deposit requirement: All online casinos state the minimum deposit size to claim a first deposit offer. It can be £10, £20, £25 or more.
  • Qualifying casino games: Players can only use the bonus on specific slots. Sometimes, particular table games are also eligible.
  • Expiration date: All casino bonuses have a shelf life ranging from days to weeks.
  • Min/max bet amounts: A player must make bets/rounds within the allowed size range. The max bet size on slots is often £5 but can be lower or higher.
  • Bonus wagering requirement: The bonus wagering requirement is the number of times (expressed as a multiplier) a player must wager the bonus money (sometimes bonus + deposit) before becoming real. This multiple often ranges from about 40x to about 65x. Games weights: Games with a 100% weighting mean that £1 wagered contributes £1 towards the wagering requirement. Sometimes, specific games have a weighting of less than 100% or even 0%. For example, particular video slots might have a 50% weighting. Therefore, a player would need to wager twice as much to satisfy the wagering requirement.
  • Max wins and withdrawals: A common casino practice limits the amount of money a player can keep and withdraw after completing the wagering requirement. The remaining balance is lost.

Pros & Cons of First Deposit Casino Bonus

✅ Higher deposit bonus than a regular reload bonus
✅ Often require a lower min deposit compared to a reload bonus
✅ An excellent way of extending the playing time
✅ Introduces players to games they may never have played before
✅ Possibility of transforming bonus money into real money
✅ Low risk

❌ Bonus T&Cs define qualifying games, max bets, min deposits, etc.
❌ Players must satisfy bonus wagering requirements
❌ Accidental breach of terms can void the bonus and winnings
❌ Limits apply on real money winnings/withdrawals from a bonus

Competitive 400% Casino Bonuses 

There’s more to being the best 400% welcome bonus casino than just the offer. Since an online casino is the sum of its parts, it’s advisable to consider one from different perspectives. We’ve done exactly that and come up with four of the best 400% first deposit online casinos for players in the United Kingdom.

NonStop Casino – 400% First Deposit Bonus (£3,000 max)

Founded in 2022, NonStop Casino is a modern crypto casino that accepts players from the United Kingdom depositing in GBP, BTC, USDT, BCH, ETH or LTC. It’s known for a brilliant 950% match welcome package over the first five deposits, valid on games from Amatic, EGT and NetEnt. Of course, this package starts with a first deposit 400% match bonus of up to £3,000.

The casino carries thousands of slots, specialty, table, and live casino games  like live roulette and blackjack from over 45 studio providers. Although a sterling or crypto deposit lets players enjoy them for real money, it also opens the door to exciting reload bonuses, free spins, a daily 5% cashback, plus 30% daily extra cashback.

Sure, NonStop Casino offers content from some of the most prominent studios, like NetEnt, Microgaming, Betsoft and BGaming. However, it stands out for software studios that provide slots that UK players don’t find every day, like Zeus Play, Vibra and Mancala.

Additionally, NonStop Casino carries hundreds of RNG table games from providers like Lucky Elephant, Nucleus Gaming, Rival and Evoplay. The content includes a host of roulette, casino poker, video poker, blackjack, baccarat, bingo, scratch cards and virtual games.

NonStop live casino houses over 80 variants, including roulette, blackjack, baccarat and Casino Hold’em. This content comes from six live studio providers: Live168, Vivo, Xpg, Seven Mojos, Atmosfera and Sa Gaming.

NonStop Casino also offers a sportsbook covering 28+ sports, including horse racing, greyhounds and eSports. UK players can make in-play or upcoming wagers daily on thousands of betting markets.

Claim your 400 casino bonus here on the website of NonStop Casino

Nonstop Casino welcome bonus

Blood Moon Casino – 400% First Deposit Bonus (£800 max)

Founded in 2023, Blood Moon Casino is another UK player-friendly site, offering a first deposit 400% match bonus of up to £800. The bonus money has a low 45x bonus wagering requirement on engaging Amatic, NetEnt and EGT slots.

Regular members of Blood Moon continue to find promotions, like free spins, a 5% cashback (£2,000 max) and 30% daily extra cashback (£2,000 max).

Players can deposit or withdraw British pounds, Bitcoins, Litecoins, Tether, Ethereum or Bitcoin Cash with no casino handling fees. The Blood Moon Casino withdrawal approval time is just two business days.

Aside from a sportsbook, Blood Moon has hundreds of games from nearly 50 studio providers, offering some of the most popular slot games around:

  • Narcos, Gonzo’s Quest (NetEnt)
  • Break Da Bank, Lost Vegas (Microgaming)
  • Lovely Lady, Book of Aztec (Amatic)
  • A Night in Paris, Greedy Goblins (Betsoft)
  • Flaming Hot, The Story of Alexander (EGT)

RNG table and live dealer games account for hundreds of additional games, covering blackjack, roulette, casino poker, baccarat and keno. The 100+ live dealer games come from an astounding six live casino providers: Xpg, Sa Gaming, Vivo, Live168, Atmosfera and Seven Mojos.

Specialty games are a sizable component of the games found at Blood Moon. For example, Blood Moon Casino has over 18 scratch cards, like Demon Train Scratch (Dragon Gaming), Football Scratch (Evoplay) and King of Jumping (Belatra). Likewise, the online casino has over 16 keno games, like VIP Keno (Smartsoft) and Xmas Keno Cat (Evoplay).

Bingo is another category in which Blood Moon Casino excels, with over 30 and counting. These come from multiple providers like Salsa Technology, We Are Casino, Eagaming, Vibra, Mascot, Belatra and Cool Games. Kiron and Virtual Generations are the master software providers behind 30+ virtual games like horse racing, football, cock fighting and dog racing.

Claim your 400 casino bonus here on the website of BloodMoon Casino

BloodMoon Casino welcome bonus
Slots Dreamer – 400% First Deposit Bonus (£1,200 max)

Slots Dreamer Casino is another brilliant UK player-friendly crypto casino with a race/sportsbook. Members can deposit or withdraw in GBP, BTC, ETH, LTC, USDT or BCH without nuisance casino handling fees. Furthermore, this Bitcoin casino has a low withdrawal processing time of only two business days.

New sign-ups at Slots Dreamer that make their first deposit of £25 or more qualify for an enticing welcome casino offer. It consists of a 400% match bonus of up to £1,200, which players can enjoy on slots from the industry-leading providers NetEnt, Amatic and EGT.

Although regular casino members can’t claim the welcome bonus, they can find other tantalising alternatives, like reload bonuses and free spins. The crypto casino’s daily cashback bonus returns 10% of a player’s daily losses of up to £2,000. The daily extra cashback applies on top of the regular daily cashback, returning 30% as bonus money (maximum of £2,000).

The crypto casino has an impressive collection of over 3,800 slots, table games, virtual games, live casino games and specialty games from just under 50 software providers. It has a ‘Lucky games’ category of nearly two dozen live dealer games. These include lotto, keno, baccarat, poker, Wheel of Fortune and others from BetGames, Liw, and Superlotto. These are in addition to the 100+ live dealer games from another six live studio providers.

Besides casino games, Slots Dreamer sports betting and racing let bettors wager on 25+ sports/eSports and betting markets. Britons who enjoy horse racing and/or greyhounds can find live events. Bettors can sometimes find sports betting promotions, like combo bet boosts or free bets.

Claim your 400 casino bonus here on the website of SlotsDreamer Casino

SlotsDreamer Casino welcome bonus
The Red Lion Casino – 400% First Deposit Bonus (£800 max)

The Red Lion Casino is a crypto gambling site in operation since 2020. New player sign-ups from Great Britain who make their first deposit can collect an exciting 400% match bonus (£800 max) on NetEnt, Amatic and EGT slots. It’s followed by a 150% match bonus of up to £1,000 and a 200% match deposit of up to £1,200 on the second and third deposits.

Red Lion Casino is a Bitcoin operator, accepting GBP, BTC and altcoins (BCH, ETH, USDT or LTC). It accepts a small minimum deposit of just £10 and approves withdrawals in a speedy two business days.

The casino has close to 4,000 games from 45+ studio providers with a range of branded & unbranded slot classics:

  • Narcos, Blood Suckers, (NetEnt)
  • Lovely Lady (Amatic)
  • Aztec Magic (BGaming)
  • The Slotfather Jackpot (Betsoft)
  • 40 Super Hot (EGT)

The crypto casino also specialises in table/specialty games, numbering over 400. Here, players can find classics like casino poker, video poker, blackjack, roulette, baccarat, bingo, scratch card, lotto and keno. Additionally, the casino boasts over 30 virtual games, like football, motor racing and harness racing.

Equally impressive is the live dealer section that contains over 100 classics from six different providers:

  • Atmosfera: Auto Roulette, Music Wheel
  • Seven Mojos: Neon Roulette, No Commission Baccarat, Galaxy Roulette
  • Live168: Live Bingo, Live American Roulette, Live Blackjack Atlantic
  • Vivo: English Casino Hold’em, European Roulette
  • Sa Gaming: Dragon Tiger, Sic-Bo
  • XPG: VIP Gold Baccarat, Fast Baccarat, Fast Roulette

40+ additional live games differentiate the Red Lion Casino experience from many others because of the uniqueness of some content:

  • BetGames: Bet on Poker, Lucky 5/6/7, 6+ Poker
  • Liw: Lotto 5/20-10/80-10/20, Keno 20/80-5/80
  • Superlotto: 5 of 36, 7 of 42, Dice

Claim your 400 casino bonus here on the website of Red Lion Casino

Red Lion Casino welcome bonus


A 400% first deposit bonus’ positives almost always outweigh the negatives. However, that doesn’t make them all equal, so doing your homework is critical to picking the best ones. You’ll want to consider the bigger picture, like available casino games & software studios, payment providers, currencies, cashout speed and the bonus T&Cs & wagering requirements.

Alternatively, let us do the work for you by playing at one of our article’s recommended safe & trustworthy 400% first deposit bonus online casinos.

  • What is a 400% first deposit bonus?
  • What casino games qualify for a 400% first deposit bonus?
  • Where can I find the best 400% welcome bonus casino online for UK players? Our
  • How do I claim my 400% welcome bonus?