Even if you have only 10 GBP to play, you can turn it into 40 GBP with a 400% slots bonus UK offer and play with a 50 GBP budget. No, we are not kidding: This is perfectly possible with 400 casino bonus UK offers.

As the name implies, a 400% casino bonus will increase your budget and give you a very big 400% bonus at the start. By taking advantage of a 400% slots bonus, for example, you can easily get hundreds of spins for free to use on your favorite slot machine.

If you are wondering how to get a 400% slots bonus UK and how to use 400% slots bonus UK promotions, just keep reading: In this article, we will tell you everything you need to know about 400% casino bonus UK offers, how to use them, and where to find best 400% casino bonus UK deals. Let’s start: We have lots of 400 UK casino bonus and hundreds of games to play with a 400% slots bonus UK!

Our Best casino picks for UK players:

Time2Spin Casino
time2spin medium logo
Time2Spin Casino Welcome Bonus: 500% up to €3000 + 500 Free Spins

  • 1st Deposit Bonus: 200% up to €1000 + 200 Free Spins
  • 2nd Deposit Bonus: 100% up to €1000 + 100 Free Spins
  • 3rd Depsoit Bonus: 200% up to €1000 + 200 Free Spins
  • Wagering requirements: 35x (bonus + deposit)
  • Minimum deposit for the bonus: €25

Time2Spin Casino VIP Welcome Bonus: 600% up to €6000 + 600 Free Spins

  • 1st Deposit Bonus: 250% up to €2000 + 250 Free Spins
  • 2nd Deposit Bonus: 150% up to €2000 + 150 Free Spins
  • 3rd Depsoit Bonus: 200% up to €12000 + 200 Free Spins
  • Wagering requirements: 35x (bonus + deposit)
  • Minimum deposit for the bonus: €250
Damslots Casino
damslots medium logo
Damslots Casino Welcome Package: 750% up to £/$/€3000

  • 1st Deposit Bonus: 400% up to £/$/€800
  • 2nd Deposit Bonus: 150% up to £/$/€1,000
  • 3rd Deposit Bonus: 200% up to £/$/€1,200
  • Minimum deposit: €25
  • Wagering requirements: 50x (bonus)

Other bonuses are up for claim:

  • Crypto Bonus: 500% up to £/$/€500
  • Weekend Recharge Bonus: 75% up to £/$/€500
  • Daily Casino Cashback: 5% up to £/$/€2,000
  • Daily Extra Cashback: 30% extra cashback up to £/$/€2,000
MyStake Casino
Register right now at MyStakeCasino and grab the outstanding welcome bonus: 100% up to 1.000 EUR!

  • Minimum deposit: €20
  • Wagering requirements for the bonus: x30 bonus + deposit
  • Max. bet with bonus money: €5
Pulp Casino
Pulp Casino Welcome Package: up to €4000

Register today at Pulp Casino, make your first deposit of a minimum €20, and receive up to €4000

BC.Game Casino Welcome Bonus - Up to 240% Bonus
bc.game medium logo
BC.Game Casino Welcome Bonus – No max. deposit limit

  • 1st deposit: up to 180% bonus (min. deposit: $30)
  • 2nd deposit: up to 180% bonus (min. deposit: $60)
  • 3rd deposit: up to 180% bonus (min. deposit: $120)
  • 4th deposit: up to 240% bonus (min. deposit: $150)

The Best 400 Bonus Casino UK Sites You Can Join Today

Don’t worry about finding the best 400% deposit bonuses for UK players: We already picked the best 400 casino bonus UK deals for you. At Analyze Casino, we know what makes a 400 casino bonus good: We know which 400% casino sites to check and which sections of terms and conditions to read. The 400% bonus casinos below offer you the best deposit casino bonuses UK you can find and with the lowest wagering rates available. More importantly, these best UK casino bonus offers provide you a safe, secure, fair, and legal environment to play thousands of games. Complete your registration today and start using your casino welcome bonus UK!

Do you want to learn more about slots bonus UK casinos? Check our casino review section: We examined all of the 400 casino bonus UK sites in detail. We have other 400 casino bonus UK offers to suggest and all of these are available on our website. Moreover, we can suggest you 400 UK casino bonus offers based on your budget too: For example, if you only have a single buck to spend, check our £1 minimum deposit casino UK reviews. And 400 deposit bonus is not the only thing we can offer to players from the UK: If you want, we can also find you the best 200%, 300%, and even 500% first deposit bonus offers.

Whether you are looking for a 400% slots bonus or any other offer, we can find the best UK casino bonus for you. We have a special section for casino bonus for UK players, where we analyze all of the best slots bonus UK deals. In fact, we have a section like this for every country in the world: No matter where you live in, we can find the best casino bonus 400 offers for you.

Best Online Casinos for UK players in 2023


Casino Name


Accepted in UK


Get started

500% up to €3000 + 500 Free Spins
Rating 9.99 out of 10
Up to £3000
Rating 9.98 out of 10
Up to €1000
Rating 9.97 out of 10
Up to £4000 Welcome Package
Rating 9.91 out of 10
Up to 240% Bonus - No Max Deposit Limit
Rating 9.80 out of 10
Up To £1300 + 250 Free Spins
Rating 9.34 out of 10
111% Up To €1500
Rating 8.91 out of 10
Up to 500 Free Spins
Rating 8.76 out of 10
100% up to £100 +100 Free Spins
Rating 8.75 out of 10
100% up to £200
Rating 8.55 out of 10

What Is A 400% First Deposit Bonus And Why Is It The Best Slots Bonus UK?

A 400% slots bonus will most likely be a first deposit bonus and they are actually simple: They match the deposit amount with a certain rate and up to a maximum limit. For example, a 400% deposit bonus UK will quadruple your initial payment. We can give more examples. A 200% deposit bonus UK, for example, will multiply this amount. So, if you deposit 10 GBP, you will get a bonus of 20 GBP. Or, you can take advantage of a 300% deposit bonus UK and triple the deposit amount: In this example, depositing 10 GBP will give you a 30 GBP bonus. Basically, this percentage shows how much extra funds you can win with your first deposit.

The same thing applies to a 400% first deposit bonus too. But the this is a casinobonus 400% this time, so you will get quite a big bonus, especially if you can deposit big figures. Depositing 100 GBP, for example, will give you 400 GBP with the right 400% casino bonus UK. But this is not necessary at all – a 400 casino bonus UK already offers a high match rate, so even small deposits will be useful for you. For example, if you are playing at a £5 minimum deposit casino UK, you can win 20 GBP in exchange for depositing 5 GBP (5 x 4). Basically, with a 400 UK casino bonus, you get the chance to get an extra casino budget for playing. No matter what your initial deposit amount is, a 400%25 casino bonus UK will give you and advantage.

Practical Examples To 400% Casino Bonus UK Offers

We believe that explaining how 400% first deposit bonus offers work with actual numbers will give you a better understanding of the 400 casino bonus. Yes, we explained what is 400 deposit bonus casino UK above, but what do you really get in exchange for your first deposit especially with a 400 slots bonus UK?  Check the casino bonus for UK players table below and find out!




10 GBP
40 GBP
50 GBP
20 GBP
80 GBP
100 GBP
30 GBP
120 GBP
150 GBP
50 GBP
200 GBP
250 GBP

Well, we were not kidding when we said “you can quadruple your starting budget with a 400 slots bonus UK”: This is really possible with the right casino welcome bonus UK . Basically, you need to multiply your first deposit amount with 4 to see your total gambling budget.

Why Do 400 Casino Bonus Uk Offers Exist?

Further Information

To gain more members, of course. This is a promotion and like any other online casino promotion, it is designed to grab your attention + encourage you to become a member. The chance to raise your starting budget is a very good offer and a 400% slots bonus will do exactly that: You will start playing with an advantage and use your UK slots bonus funds to spin the reels of slot machines, for example. The winnings are yours to keep, but only if you complete a wagering requirement. Check the “what’s the catch of casino 400 bonus UK” section below to learn more about this.

What Is The “Catch” Of 400 UK Casino Bonus Offers?

The “catch” of all 400 casino bonus UK offers is the wagering requirement. This means all of your winnings are really yours to keep but you need to “unlock” them first. And to unlock them, you must wager a certain amount of money. Wagering means placing a wager on a game. Basically, you must deposit money and use it to play games until you complete the wagering requirement– this is how you unlock the slots bonus UK.

So, how much money you need to wager for this requirement? This is defined by the wagering rate. All casinos have a different rate, as can be seen above. This rate will show the total wagering amount needed to unlock the bonus. After unlocking it, you can withdraw your winnings (or use them to play games). Here is a table that shows different wagering rates for a 400% slots bonus to give you an idea:




50 GBP
1.000 GBP
100 GBP
3.500 GBP
200 GBP
1.000 GBP

Things You Should Know About Casino 400 Bonus UK Offers

  • Make sure that there is no cashout limit or it is high enough. This means you are allowed to withdraw only a certain amount, no matter how much you have won. For example, if the maximum cashout limit is 250 GBP and your bonus is 1.000 GBP, you won’t be able to withdraw more than 250 GBP. The rest of your bonus will be void. So a casino with a high bonus won’t necessarily be also a best payout online casino UK site.
  • Make sure the maximum wager limit is high enough. Until the wagering requirement is complete, you will have a maximum wager limit – usually 5 GBP. It should not be lower than this amount. Otherwise, it will take too long to complete the requirement.
  • Make sure the wagering rate is low enough. Ideally, the wagering rate should not be higher than 40x, and it should be as low as possible. If this rate is higher than 40, it may be impossible to complete the wagering.

Is It A Good Idea To Use A 400 Deposit Bonus in UK?

Taking advantage of a 400 casino bonus UK offer is almost always a good idea. The only problem can be the wagering rate, as explained above. Other than that, you should always benefit from 400 bonus casino UK offers, even if you are playing at a £3 minimum deposit casino UK site. Here is a short pros and cons list to help you decide:

  • Quadruple your starting budget easily
  • Get hundreds of slot spins for free
  • Useful even with low deposit amounts
  • Gives you a big advantage at the start
  • It may be hard to complete the wagering requirement

FAQ about 400 casino bonus UK

The best casinos with 400% bonuses are listed in this article, we strongly recommended Big5Casino and Spin Samurai.
So, a 400% first deposit bonus the UK is a specific percent of your deposit that you get in return for making the initial deposit/win.
Yes, if your operator has a mobile app or is mobile friendly. But don't worry, almost all the casinos are now available for all formats like phones and tablets.
Not all of them, for a first deposit you can receive from 100% to 500% bonus or other types like free spins, free money, rolls, etc.

Claim Your 400 Casino Bonus UK Today!

We have a long list of best first deposit bonus casino sites for UK players and it contains dozens of 400 casino bonus UK offers. Without wasting any more time, simply pick a 400% first deposit bonus and start playing today! Claiming a 400% slots bonus will give you the chance to spin the reels hundreds of times for free, and you get to keep the winnings: This is as good as it gets when it comes to welcome bonuses. We update our 400 UK casino bonus lists on a constant basis, so don’t forget to come back to see more recommendations. Good luck and see you at the tables!