400% Deposit Bonus

400% deposit bonuses can be far and few between at UK online casinos. But, if you come across the right one, you’ll know you’ve found a real gem. On this page, we share all of the essential information about this rare casino bonus. This way, you’ll know exactly what to do when you find one. Here, you’ll also find links to the best easier-to-spot bonuses so that you have plenty of viable options to get your casino journey started.

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Find the Best 400% Deposit Bonuses at JohnSlots!

Finding the best deposit bonuses is easy with JohnSlots. Our team of experts are the dedicated gatekeepers of our recommendations list. They update it when they find a site that matches their rigorous criteria. Here’s how they do it:

Minimum Deposits – No matter your experience level at online casinos, you deserve a chance to start your online gaming journey without too many risks. Our top-rated casinos have a wide range of minimum depositing options for everyone.

Varied Bonus Amounts – We cater to casino players of all budgets by offering them a wide variety of match bonuses from standard 100% to huge 400% casino bonuses.

Eligible Games – We never judge a casino by its amount of games. With the right slots and other titles, a high quality 300+ games library can outperform a 1,000+ games lobby.

Wagering Requirements – Our casino experts will always point out if the wagering requirements are way too high and the bonus terms unreasonable.

Logo LeoVegas
4.5 /5
4.5 rating

LeoVegas

4.5 rating
4.5 /5

ON REGISTRATION

10 Free Spins

1ST DEPOSIT BONUS

100% bonus up to £100 + 20 Wager-Free Spins

Full T&Cs apply. No deposit needed. 3 days to claim & 3 day expiry. 10x free spins worth 10p on Book of Dead. Deposit offers available across any two deposits. Cash rewards 7 days from registration to opt-in from “Promotions” page & each with 7 days wagering. Deposit £10, £25 or £50 & wager 35x. Only cash stakes qualify & wagering contributions vary. 10 free spins worth £0.10 to be claimed within Book of Dead with each qualifying deposit, 3 day expiry.
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LeoVegas

TOTAL WELCOME PACKAGE

£100
+ 20 Wager-Free Spins

ON REGISTRATION

10 Free Spins

1ST DEPOSIT BONUS

100% bonus up to £100 + 20 Wager-Free Spins

Logo Casino Planet
4 /5
4.0 rating

Casino Planet

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% up to £100 + 200 Free Spins

Full T&C's Apply.£10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded.
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Casino Planet

TOTAL WELCOME PACKAGE

£100
+ 200 Free Spins

1ST DEPOSIT BONUS

100% up to £100 + 200 Free Spins

Logo Win British
4 /5
4.0 rating

Win British

4.0 rating
4 /5

1ST DEPOSIT BONUS

Up to 500 Free Spins

Minimum deposit £10. £8 max win per 10 spins. Max bonus equal to lifetime deposits (up to £250). 65x wagering requirements.
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Win British

TOTAL WELCOME PACKAGE

The chance to win up to 500 Free Spins

1ST DEPOSIT BONUS

Up to 500 Free Spins

Logo Target Slots
3 /5
3.0 rating

Target Slots

3.0 rating
3 /5

1ST DEPOSIT BONUS

20 Free Spins on Aloha

No deposit required. Valid debit card validation required. £8 max win per 10 spins, Max bonus conversion £50, 65x wagering requirements. Full terms apply.
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Target Slots

TOTAL WELCOME PACKAGE

20 No Deposit Free Spins

1ST DEPOSIT BONUS

20 Free Spins on Aloha

Logo Sky Vegas
4.5 /5
4.5 rating

Sky Vegas

4.5 rating
4.5 /5

ON REGISTRATION

50 No Wager Free Spins

1ST DEPOSIT BONUS

200 Free Spins for £10

Opt In Required. 7 Day Free Spin Expiry. All Free Spins Will Auto Play On First Eligible Game Loaded. £10 Staking Requirement Must Be Met Within 30 Days Of Opt In. Eligibility Restrictions Apply. Further Terms Apply.
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Sky Vegas

TOTAL WELCOME PACKAGE

250 Free Spins

ON REGISTRATION

50 No Wager Free Spins

1ST DEPOSIT BONUS

200 Free Spins for £10

Logo PlayOJO
4 /5
4.0 rating

PlayOJO

4.0 rating
4 /5

1ST DEPOSIT BONUS

50 No Wager Spins + 30 Exclusive Extra Spins

Only for 1st time depositors. Min deposit is £10. 50 Free Spins on Book of Dead. Spin Value: £0.10. After your 1st deposit you may claim your 30 Extra Free Spins by visiting the Kicker Section. No min withdrawal. Cannot be used in conjunction with any other offer. Only available for specific players that have been selected by PlayOJO. OJO’s Rewards and Game Play policy applies.
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PlayOJO

TOTAL WELCOME PACKAGE

80 Free Spins No Wagering

1ST DEPOSIT BONUS

50 No Wager Spins + 30 Exclusive Extra Spins

Logo MrQ Casino
4 /5
4.0 rating

MrQ Casino

4.0 rating
4 /5

1ST DEPOSIT BONUS

30 No Wager Free Spins on 1st Deposit with Bonus Code TED30

First deposit only. Min deposit & spend £10. Max 30 spins on TED at 20p per spin. Spins credited upon spend of £10. Full T&Cs apply.
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MrQ Casino

TOTAL WELCOME PACKAGE

30 Free Spins No Wagering

1ST DEPOSIT BONUS

30 No Wager Free Spins on 1st Deposit with Bonus Code TED30

Logo Spinit
4 /5
4.0 rating

Spinit

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £100 + 200 bonus spins

Full T&C's Apply. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins on Starburst will be credited instantly + then 20 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded.
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Spinit

TOTAL WELCOME PACKAGE

Up to £100
+ 200 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £100 + 200 bonus spins

Logo Videoslots
4 /5
4.0 rating

Videoslots

4.0 rating
4 /5

ON REGISTRATION

11 free spins no wagering

1ST DEPOSIT BONUS

100% bonus up to £200

11 Welcome Spins Wager-free and 100% up to £200 on your 1st deposit. Min. deposit £10. 7 days to activate the spins. Bonus spins expire 24 hours after activation. Activate the Welcome Bonus within thirty (30) calendar days under the 'My Bonuses’ section. 100% bonus up to £ 200 will be paid out in 10% increments to Main Account balance. 35x wagering. Play Responsibly.
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Videoslots

TOTAL WELCOME PACKAGE

£200
+ 11 free spins no wagering

ON REGISTRATION

11 free spins no wagering

1ST DEPOSIT BONUS

100% bonus up to £200

Logo PartyCasino
4 /5
4.0 rating

PartyCasino

4.0 rating
4 /5

1ST DEPOSIT BONUS

Up to 50 bonus spins on Starburst

New depositors only. UK residents only. Minimum deposit £10. Free Spins are valid only on Starburst and expire in 7 days. 10x wagering apply. Certain deposit types are excluded.
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PartyCasino

TOTAL WELCOME PACKAGE

50 bonus spins

1ST DEPOSIT BONUS

Up to 50 bonus spins on Starburst

Logo Sky Casino
4.5 /5
4.5 rating

Sky Casino

4.5 rating
4.5 /5

1ST DEPOSIT BONUS

Spend £10 and Get a £60 Bonus

Opt In Required. Min. £10 Staking Requirement Applies. Max. Bonus £60 With A 40x Wagering Requirement, To Which Table & Card Games Contribute 20%. 30 Day Bonus Expiry Period Applies. Game And Eligibility Restrictions Apply. Further T&Cs Apply.
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Sky Casino

TOTAL WELCOME PACKAGE

Spend £10 Get £60

1ST DEPOSIT BONUS

Spend £10 and Get a £60 Bonus

Logo NetBet
3 /5
3.0 rating

NetBet

3.0 rating
3 /5

1ST DEPOSIT BONUS

Up to 500 Free Spins

New players, £10+ deposit, no e-wallets/prepaid cards, 50x wagering on Vegas Free Spins, 40x wagering on Casino Free Spins. T&Cs apply
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NetBet

TOTAL WELCOME PACKAGE

Up to 500 Free Spins on your First Deposit

1ST DEPOSIT BONUS

Up to 500 Free Spins

Logo Queen Vegas
3 /5
3.0 rating

Queen Vegas

3.0 rating
3 /5

1ST DEPOSIT BONUS

100% up to £200 + 100 FS on Book of Dead

First Deposit Only. Min. deposit: £20, max. Bonus £150. Game: Thor and the Trials of Asgard, Spin Value: £0.1. WR of 60x Bonus amount and Free Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings and bonus amount or £5 (lowest amount applies). Spins must be used and/or Bonus must be claimed before using deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. This offer is only available for specific players that have been selected by Queen Vegas Casino. If you have arrived on this page not via the designated offer via Queen Vegas Casino you will not be eligible for the offer. Bonus Policy applies.
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Queen Vegas

TOTAL WELCOME PACKAGE

Up to £200
+ 100 Free Spins

1ST DEPOSIT BONUS

100% up to £200 + 100 FS on Book of Dead

Logo Your Favourite Casino
3.8 /5
3.8 rating

Your Favourite Casino

3.8 rating
3.8 /5

1ST DEPOSIT BONUS

Up to 500 free spins on Starburst

MIN DEPOSIT £10.00, £8.00 MAX WIN PER 10 SPINS, MAX BONUS EQUAL TO LIFETIME DEPOSITS (UP TO £250.00), 65X WAGERING REQUIREMENTS AND FULL T&CS APPLY
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Your Favourite Casino

TOTAL WELCOME PACKAGE

Up to 500 free spins

1ST DEPOSIT BONUS

Up to 500 free spins on Starburst

Logo Playluck
4 /5
4.0 rating

Playluck

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% up to £50 + 30 extra spins

Offer valid upon 4 deposits. Minimum deposit £20. Welcome package split over 4 deposits, 35x wagering applies.
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Playluck

TOTAL WELCOME PACKAGE

Up to £200
+ 100 Extra Spins

1ST DEPOSIT BONUS

100% up to £50 + 30 extra spins

Logo Fansbet Casino
4 /5
4.0 rating

Fansbet Casino

4.0 rating
4 /5

1ST DEPOSIT BONUS

Bet £10, Get £10 + 50 Free Spins

New customer offer; Place first £10 on sports with 3 legs at odds of 1.3 or greater per leg; Free Multiple Bet must contain 3 legs at odds of 1.3 or greater per leg; Free Bet and Free Spin stakes not returned; No wagering requirements on winnings; £200 total max win; T&Cs apply. 18+.
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Fansbet Casino

TOTAL WELCOME PACKAGE

£10
+ 50 Free Spins

1ST DEPOSIT BONUS

Bet £10, Get £10 + 50 Free Spins

Logo Casino Lab
4 /5
4.0 rating

Casino Lab

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% up to £100 + 300 Free Spins On Reactoonz

£10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 spins on pre-selected games will be credited instantly + then 30 per day for 9 days. Free spins valid for 72 hours from credit. Max free spins winnings £100. Ewallets excluded.
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Casino Lab

TOTAL WELCOME PACKAGE

£100
+ 300 Free Spins

1ST DEPOSIT BONUS

100% up to £100 + 300 Free Spins On Reactoonz

Logo Kassu
4.5 /5
4.5 rating

Kassu

4.5 rating
4.5 /5

1ST DEPOSIT BONUS

100% bonus up to £100 + 300 free spins

£10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded.
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Kassu

TOTAL WELCOME PACKAGE

£100
+ 300 free spins

1ST DEPOSIT BONUS

100% bonus up to £100 + 300 free spins

Logo Betfair
4 /5
4.0 rating

Betfair

4.0 rating
4 /5

1ST DEPOSIT BONUS

50 No Wager Spins

Offer open to new customers using promo code CASD11 when registering. No wagering required on free spins! Spins Valued At 10p. Free spins available for 7 days after qualifying.
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Betfair

TOTAL WELCOME PACKAGE

50 No Wagering Free Spins

1ST DEPOSIT BONUS

50 No Wager Spins

Logo Betway
4 /5
4.0 rating

Betway

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £50 + 50 bonus spins

Opt-in required. This offer is valid for selected customers only, until 25th August 2021 23:59 TCS. 50 Bonus Spins are awarded upon successful 1st deposit. 10% match bonus up to £50 on 1st deposit of £10+. 10 bonus spins credited on a daily basis for 5 days. Winnings from bonus spins are subject to wagering of 30x playthrough requirements. Irregular gameplay may invalidate your bonus. Debit card deposits only. This offer is valid for 7 days from when your new account being registered. Other conditions apply. Bet The Responsible Way.
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Betway

TOTAL WELCOME PACKAGE

Up to £50
+ 50 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £50 + 50 bonus spins

Logo Casumo
4.5 /5
4.5 rating

Casumo

4.5 rating
4.5 /5

1ST DEPOSIT BONUS

100% up to £25 + 20 Bonus Spins on Book of Dead

Opt-in required. 20 Bonus Spins on “Book of Dead” and 100% Deposit Bonus up to £25 on first deposit. Min deposit £10. 30x wagering requirement for Bonus Spins and 30x wagering requirement for Deposit Bonus (game weighting applies). Max £5/spin or £0.50/line or £50/round (live casino). 30 days expiry. Please gamble responsibly.
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Casumo

TOTAL WELCOME PACKAGE

Up to £25
+ 20 Bonus Spins

1ST DEPOSIT BONUS

100% up to £25 + 20 Bonus Spins on Book of Dead

Logo Paddy Power
4.5 /5
4.5 rating

Paddy Power

4.5 rating
4.5 /5

1ST DEPOSIT BONUS

100 Free Spins on Daily Jackpot Games with Promo Code PGCTV1

1) To take part, you must register via the registration code PGCTV1 and opt in. 2) Get SMS-verified by supplying a valid telephone number. 3) Enter the validation code received by SMS to redeem the free spins. 4) Free Spins are valid on any of our Daily Jackpot games. 5) Free Spins will expire in 10 days from receipt of the offer.
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Paddy Power

TOTAL WELCOME PACKAGE

100 Free Spins No Wagering

1ST DEPOSIT BONUS

100 Free Spins on Daily Jackpot Games with Promo Code PGCTV1

Logo PlayGrand
4 /5
4.0 rating

PlayGrand

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% up to £300 + 30 Bonus Spins on Reactoonz

Min. deposit £10. Bonus: 1st deposit 100% up to £300 + 30 bonus spins (Reactoonz), 2nd deposit 50% up to £500 + 50 bonus spins (Book of Dead), 3rd deposit 25% up to £200 + 20 bonus spins (Legacy of Egypt). Spins on specified games only. Bonus money is separate to Cash funds & subject to 35x wagering requirement. £5 bonus max. bet. Bonus must be used within 30 days, spins within 10 days, otherwise any unused will be removed. Only bonus funds contribute towards wagering requirements.
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PlayGrand

TOTAL WELCOME PACKAGE

Up to £1,000
+ 100 Bonus Spins

1ST DEPOSIT BONUS

100% up to £300 + 30 Bonus Spins on Reactoonz

Logo PokerStars
4.5 /5
4.5 rating

PokerStars

4.5 rating
4.5 /5

1ST DEPOSIT BONUS

Bet £10 Get 100 Free Spins No Wagering

New casino players only. Min. £10 deposit with code ‘CASINO100’, debit card only. Valid on 7 slots. 7-day expiry. All spins must be used before cashout allowed. Terms apply.
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PokerStars

TOTAL WELCOME PACKAGE

Up to 100 Free Spins for £10 Wager

1ST DEPOSIT BONUS

Bet £10 Get 100 Free Spins No Wagering

Logo Electric Spins
3 /5
3.0 rating

Electric Spins

3.0 rating
3 /5

1ST DEPOSIT BONUS

100% up to £30 + 25 Free Spins

Min Deposit £10. Max Offer 100% Bonus up to £30 & 25 Free Spins [Game of our choice]. Free Spins winnings are capped at £2.50 and credited as bonus funds with 40x wagering. Bonus funds must be wagered 60x before withdrawal. Slots Bonus funds winnings are capped at £100 + original bonus amount Free Spins expire after 7 days. Promo code: POWER. We reserve the right to deny promotional offers based on abusive bonus activity across sites operated by the Company. Deposit balance available for withdrawal at any time (UK only). General withdrawal restrictions & full T&Cs apply. Valid until 31/12/2021.
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Electric Spins

TOTAL WELCOME PACKAGE

£30
+ 25 Free Spins

1ST DEPOSIT BONUS

100% up to £30 + 25 Free Spins

Logo PlayFrank
4 /5
4.0 rating

PlayFrank

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% match bonus up to £100 + 50 spins

Min deposit £20. Bonuses to a max of £100 + 50 bonus spins. Wagering bonus 35x. Wagering bonus spins 35x. Max bonus bet £5. The winnings must be wagered within 7 days. Bonus T&Cs apply.
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PlayFrank

TOTAL WELCOME PACKAGE

£100
+ 50 Spins

1ST DEPOSIT BONUS

100% match bonus up to £100 + 50 spins

Logo Playzee
4.5 /5
4.5 rating

Playzee

4.5 rating
4.5 /5

1ST DEPOSIT BONUS

100% up to £300 + 100 Spins

Min Deposit £20 Max Bonus Bet £5 Winnings from spins capped at £50 100 Zee Spins valid on Starburst (first 10 credited immediately upon first deposit; rest credited at 07:00 GMT at 10/day). Spins must be used by 23:59 GMT of the day on which they are credited to player account, any unused shall be removed. Bonus funds must be used within 30 days. Bonus funds are separate to Cash funds, and subject to 35x wagering (bonus + cash). Terms apply. Play Responsibly.
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Playzee

TOTAL WELCOME PACKAGE

£300
+ 100 Spins

1ST DEPOSIT BONUS

100% up to £300 + 100 Spins

Logo BetFred
4 /5
4.0 rating

BetFred

4.0 rating
4 /5

1ST DEPOSIT BONUS

Stake £10 for 50 Free Spins No Wagering

£10 min transfer & stake on slots within 7days. Min 5 game rounds. Max 50 Free Spins on selected games, credited within 48 hours of qualifying. Free Spins expire after 7 days. E-wallet & Pre-Paid card restrictions apply. SMS validation may apply.
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BetFred

TOTAL WELCOME PACKAGE

50 No Wager Free Spins for £10 Stake

1ST DEPOSIT BONUS

Stake £10 for 50 Free Spins No Wagering

Logo Platin Casino
4 /5
4.0 rating

Platin Casino

4.0 rating
4 /5

1ST DEPOSIT BONUS

Deposit £20 to get £50 + 50 Free Spins

Max win from bonus money is £100. Max stake with bonus active is £5 and 30x wagering. 50 cash Free Spins released over 5 days. Expires 14 days after deposit. Skrill/Neteller deposits not eligible.
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Platin Casino

TOTAL WELCOME PACKAGE

Get £50
+ 50 Free Spins

1ST DEPOSIT BONUS

Deposit £20 to get £50 + 50 Free Spins

Logo BetVictor
3 /5
3.0 rating

BetVictor

3.0 rating
3 /5

1ST DEPOSIT BONUS

£30 + 100 Free Spins

Deposit, opt in and wager £10 on selected games within 7 days of opening new account. Get 3 x £10 bonuses for selected games with up to 40x wagering plus 100 Free Spins. Bonuses expire in 7 days. Max redeemable from bonuses £750. 100 Free Spins have no wagering and expire in 7 days. Please Gamble Responsibly.
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BetVictor

TOTAL WELCOME PACKAGE

Wager £10 for 3x £10 Bonuses
+ 100 Free Spins

1ST DEPOSIT BONUS

£30 + 100 Free Spins

Logo 32 Red
4 /5
4.0 rating

32 Red

4.0 rating
4 /5

1ST DEPOSIT BONUS

150% up to £150

New accounts only. Min. £10 deposit, debit card only. Up to 50x wagering, game contributions vary, max stake applies. 7 day expiry.
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32 Red

TOTAL WELCOME PACKAGE

Up to £150

1ST DEPOSIT BONUS

150% up to £150

Logo William Hill
4 /5
4.0 rating

William Hill

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% Deposit Bonus

New customers only. Opt in required. 1x per customer. Max 50 free spins with 20x wagering. Stake £10 stake & get 100 free spins on completion with 20x wagering. Selected slots only. Free spins expire 24 hours after issue. Eligibility rules, game, location, payment method and currency restrictions and terms and conditions apply.
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William Hill

TOTAL WELCOME PACKAGE

Up to £300
+ 50 Free Spins (after wagering)

1ST DEPOSIT BONUS

100% Deposit Bonus

Logo STS
4 /5
4.0 rating

STS

4.0 rating
4 /5

1ST DEPOSIT BONUS

Deposit match to £100

18+. New depositing on STSbet.co.uk customers only. Promotion from 08/06/2021 until further notice. Once the deposit is made the bonus is activated. Deposit method restrictions apply. Bonus code required during the first deposit, min £10 deposit. The bonus consists of a 100% deposit amount match. The max bonus available is £100. Bonus & deposit wagering requirements x35 within 7 days on selected slots only. Real money and bonus money will be used evenly when wagering requirements are active. Individual bonus funds bets £1 max. Full T&Cs apply. BeGambleAware.org
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STS

TOTAL WELCOME PACKAGE

£100 deposit match

1ST DEPOSIT BONUS

Deposit match to £100

Logo Casushi Casino
4 /5
4.0 rating

Casushi Casino

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% up to £50 + 50 Bonus Spins

100% bonus on first deposit up to £50 plus 50 Bonus spins (30 spins on day 1, 10 on day 2, 10 on day 3 for Rich Wilde and the Book of Dead slot only. Min first deposit £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. Further Terms Apply.
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Casushi Casino

TOTAL WELCOME PACKAGE

100% up to £50
+ 50 Bonus Spins

1ST DEPOSIT BONUS

100% up to £50 + 50 Bonus Spins

Logo Dream Vegas
4 /5
4.0 rating

Dream Vegas

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £400 + 50 bonus spins

One bonus offer per player. Minimum deposit £20. Max bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £400 + 50 bonus spins on eligible Netent games on your 1st deposit, 40% match up to £3000 + 30 bonus spins on eligible Netent games on your 2nd deposit, and 60% match up to £1500 + 40 bonus spins on eligible Netent games on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements.
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Dream Vegas

TOTAL WELCOME PACKAGE

£4,900
+ 120 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £400 + 50 bonus spins

Logo Karamba
4 /5
4.0 rating

Karamba

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £50 + 20 bonus spins

Min Deposit: £10. Max bonus £50. 100 spins require 3 deposits. WR 35x, spins valid for 24hrs, on selected games.
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Karamba

TOTAL WELCOME PACKAGE

£50
+ 100 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £50 + 20 bonus spins

Logo Temple Nile
5 /5
5.0 rating

Temple Nile

5.0 rating
5 /5

1ST DEPOSIT BONUS

100% bonus up to £500 + 30 bonus spins

Min. deposit £20. Max bonus bet £5. Extra spins on selected games only- must be used within 72 hours. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 100% match up to £500 + 30 extra spins on 1st deposit, 25% match up to £800 + 25 extra spins on 2nd deposit, and 50% match up to £200 + 50 extra spins on 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. 
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Temple Nile

TOTAL WELCOME PACKAGE

£1,500
+ 105 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £500 + 30 bonus spins

Logo Casiplay
4 /5
4.0 rating

Casiplay

4.0 rating
4 /5

1ST DEPOSIT BONUS

50% bonus up to £100 + 30 bonus spins

Offer valid upon 4 deposits. Min deposit £20. Welcome package split over 4 deposits, 35x wagering applies. Full terms apply.
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Casiplay

TOTAL WELCOME PACKAGE

Up to £200
+ 100 bonus spins

1ST DEPOSIT BONUS

50% bonus up to £100 + 30 bonus spins

Logo JackpotJoy
3.5 /5
3.5 rating

JackpotJoy

3.5 rating
3.5 /5

1ST DEPOSIT BONUS

£50 in Bingo Tickets OR 30 Free Spins No Wagering

Min £10 deposit & wager. 30 day expiry from deposit. Free Spins: on Double Bubble. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply.
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JackpotJoy

TOTAL WELCOME PACKAGE

Up to £50 or 30 Free Spins

1ST DEPOSIT BONUS

£50 in Bingo Tickets OR 30 Free Spins No Wagering

Logo Peachy Games
4 /5
4.0 rating

Peachy Games

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £50 + 20 Book of Dead Spins

100% bonus on first deposit up to £50 & 20 Bonus Spins. Bonus spins are credited immediately and are valid for Rich Wild and the Book of Dead slot only. Min first deposit £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. Further Terms Apply
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Peachy Games

TOTAL WELCOME PACKAGE

Up to £50
+ 20 Spins

1ST DEPOSIT BONUS

100% bonus up to £50 + 20 Book of Dead Spins

Logo Wink Slots
3.5 /5
3.5 rating

Wink Slots

3.5 rating
3.5 /5

ON REGISTRATION

30 No Deposit Free Spins

1ST DEPOSIT BONUS

100% up to £100 + 30 Free Spins

No Deposit Bonus: Register and get up to 30 free spins (FS). 10 FS x 3 on selected slots over 3 days (10 FS per day upon log in). Must be claimed by 23:59 on day of grant & valid for 7 days once claimed. FS wins granted in bonus after all FS used: wins set at £1-4 (per 10 FS). Reg bonus wins capped at £100 exec. jp. wins. Wagering req apply: 30x bonus funds (vary by game). 1st Deposit Bonus: Offer only valid on a player's 1st deposit at Wink Slots. Min deposit £10 o get 100% bonus (max £100) + 30 free spins (FS). FS available on specific games for 7 days. FS wins are granted in games bonus after all FS used. Bonus wins capped at £400. To withdraw games bonus & related wins, wager 30x the amount of bonus. Wagering req vary by game. Deposit balance can be withdrawn at any time.
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Wink Slots

TOTAL WELCOME PACKAGE

100% up to £100
+ 60 Free Spins

ON REGISTRATION

30 No Deposit Free Spins

1ST DEPOSIT BONUS

100% up to £100 + 30 Free Spins

Logo Mr.Play
4 /5
4.0 rating

Mr.Play

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £50 + 100 bonus spins

Min deposit £10. Welcome package splits over 3 deposits. 35x wagering requirement applies to match up bonus. Offer valid for 1 week. 100 spins split to 20 spins a day for 5 days. 50x wagering applies to spins.
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Mr.Play

TOTAL WELCOME PACKAGE

£200
+ 100 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £50 + 100 bonus spins

Logo PlaySunny
4 /5
4.0 rating

PlaySunny

4.0 rating
4 /5

1ST DEPOSIT BONUS

Up to £100 plus 50 bonus spins on the Book of Dead

18+. New players only. £20 minimum deposit in order to trigger welcome offer. Max. bonus of £100. 40x wagering applies. Further Terms Apply. BeGambleAware.org
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PlaySunny

TOTAL WELCOME PACKAGE

£100 plus 50 bonus spins

1ST DEPOSIT BONUS

Up to £100 plus 50 bonus spins on the Book of Dead

Logo Casimba
4.5 /5
4.5 rating

Casimba

4.5 rating
4.5 /5

1ST DEPOSIT BONUS

100% bonus up to £500 + 50 bonus spins + 500 loyalty points

1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution.
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Casimba

TOTAL WELCOME PACKAGE

£2,000
+ 125 Bonus Spins

1ST DEPOSIT BONUS

100% bonus up to £500 + 50 bonus spins + 500 loyalty points

Logo Casino.com
2.5 /5
2.5 rating

Casino.com

2.5 rating
2.5 /5

1ST DEPOSIT BONUS

100% bonus up to £100 + 40 free spins

New customers. Min deposit £20. 40 free spins on first deposit. 160 free spins after first deposit (20 per day). Max win £100. 20x wagering. Deposit bonus 40x wagering. Expires 30 days from issue. Eligibility, game, platform, payment restrictions and T&Cs apply.
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Casino.com

TOTAL WELCOME PACKAGE

£100
+ 200 free spins

1ST DEPOSIT BONUS

100% bonus up to £100 + 40 free spins

Logo 21 Prive
4 /5
4.0 rating

21 Prive

4.0 rating
4 /5

1ST DEPOSIT BONUS

125% bonus up to £300 + 200 bonus spins

1 offer per player. Min deposit £20. Max Bonus Bet £5. Bonus funds must be used within 30 days and bonus spins within 10, otherwise any unused shall be removed. 200 bonus spins valid on selected games only and credited at a rate of 40 bonus spins per day over 5 days, triggered on your 1st deposit. Bonus spins winnings credited as bonus & capped at £100. Deposit match bonus offers are: 1st dep: 125% up to £300, 2nd dep: 75% up to £300, 3rd dep: 50% up to £300, 4th dep: 25% up to £300, 5th dep: 100% up to £100. Bonus funds separate to cash funds & subject to 35x wagering. Only bonus funds count towards wagering contribution.
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21 Prive

TOTAL WELCOME PACKAGE

£1,300
+ 200 bonus spins

1ST DEPOSIT BONUS

125% bonus up to £300 + 200 bonus spins

Logo Spinland
4 /5
4.0 rating

Spinland

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £300 + 50 bonus spins + 500 Loyalty Points

One bonus offer per player. Minimum deposit £20 Max bonus bet is £5 Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £300 on your 1st deposit, 50% match up to £250 on your 2nd deposit, and 100% match up to £250 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements.
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Spinland

TOTAL WELCOME PACKAGE

£800
+ 200 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £300 + 50 bonus spins + 500 Loyalty Points

Logo Incredible Spins
3 /5
3.0 rating

Incredible Spins

3.0 rating
3 /5

1ST DEPOSIT BONUS

Up to 500 free spins

Min deposit £10, £8 max win per 10 spins, Max bonus conversion equal to lifetime deposits (up to £250), 65x wagering requirements.
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Incredible Spins

TOTAL WELCOME PACKAGE

Up to 500 free spins

1ST DEPOSIT BONUS

Up to 500 free spins

Logo FruitKings Casino
4 /5
4.0 rating

FruitKings Casino

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% bonus up to £50 + 100 bonus spins

100% bonus on first deposit up £50 & 100 Bonus spins (50 spins on day 1, 25 on day 2, 25 on day 3) for Book of Dead slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expire after 48 hours. Game restrictions apply. Further Terms Apply
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FruitKings Casino

TOTAL WELCOME PACKAGE

£50
+ 100 bonus spins

1ST DEPOSIT BONUS

100% bonus up to £50 + 100 bonus spins

Logo Generation VIP
4 /5
4.0 rating

Generation VIP

4.0 rating
4 /5

1ST DEPOSIT BONUS

100% up to £77 + 77 bonus spins

Min deposit £10. Max bonus £77. WR. 35x, spins valid for 24hrs, on selected games.

Generation VIP

TOTAL WELCOME PACKAGE

£77
+ 77 bonus spins

1ST DEPOSIT BONUS

100% up to £77 + 77 bonus spins

Logo Unibet
4 /5
4.0 rating

Unibet

4.0 rating
4 /5

1ST DEPOSIT BONUS

Deposit £10 + Play with £40

Minimum deposit £10. 35x wagering requirement apply. Bonus will expire 30 days after opt-in.

Unibet

TOTAL WELCOME PACKAGE

300% Match Bonus

1ST DEPOSIT BONUS

Deposit £10 + Play with £40

Discover more about 400% bonuses at JohnSlots:

400% Deposit Bonus on purple background

What Is a 400% Deposit Bonus?

A 400% deposit bonus is bonus money given to you as a new player for signing up with the casino. It boosts your bankroll by multiplying your initial deposit 5x. If you deposited £10 for a 400% bonus offer, you’d be able to play with £50.

With the extra bonus funds, you could play slots and table games. Sometimes, you can play live casino games with bonus money after you’ve used up your real money balance.

It’s a rare gift at any UK online casino. Therefore, it’s usually split up over multiple deposits, which you will have probably seen more often.

Why Choose a 400% Casino Bonus?

If you’re questioning whether a 400% deposit bonus is a good option for you, we’ve got three good reasons for claiming this monster of an offer:

  • Play for longer using your bonus money.
  • Use your match bonus to play slots, scratch cards, jackpots, roulette, blackjack, video poker and, at some casinos, even live dealer games.
  • Give yourself more chances to win.

How to Claim a 400% Bonus?

Whether you are claiming a 100% bonus offer or a 400% deposit offer, the process is pretty much the same at most casinos. Here are the necessary steps:

Clicking a bonus offer on a green background
  1. Find a casino that offers a 400% deposit bonus. You can browse our list for some ideas.
  2. Join the casino by creating a new account, and be sure to read the bonus terms.
  3. Register your preferred payment methods for depositing/withdrawals.
  4. Deposit at least the minimum required amount.
  5. If required, enter a promotional bonus code supplied by the casino.
  6. Activate your bonus by loading your chosen slot or table game in the games lobby.
  7. When the real money balance runs out, you can carry on playing with your bonus money.
  8. Had enough fun? Complete any wagering requirements to convert your bonus winnings into cash and go to the withdrawals page to claim your prize.

Eligibility for 400% Bonuses

There’s one more essential step to claiming your bonuses, and that’s checking the eligibility. This means that you should take note of the bonus terms included in the offer. The initial bonus advert will have all the significant terms, but you should also browse the full T&Cs to be fully prepared. Here’s what eligibility usually entails:

  • 18+ only – only players 18 years or older are allowed to play casino games and claim bonuses.
  • New UK players only – you’re only eligible for the welcome bonus if you are a UK resident and haven’t previously registered an account with the casino.
  • Verification needed for UK players – before allowing players to claim bonuses, some casinos require that you submit documentation confirming your identity and residential address beforehand.
  • E-wallets excluded – Due to the strict Gambling Commission regulations, some e-wallets like Skrill and Neteller, are not eligible for claiming bonuses. You can instead use bank cards or any other payments permitted to use by the casino.

400% Bonus – Only for New Players?

Incentives such as a 400% deposit bonus are usually available to new players only. However, that doesn’t mean that there isn’t anything else available for existing customers. As a loyal player, you can get:

  • Reload Bonuses
  • VIP Offers
  • Tournament & Competition Prizes

If you’re planning to return to a casino, check out their promotions page dedicated to fun affairs such as tournaments, various competitions and reload bonuses. The reload bonuses can be beneficial after you’ve used up your welcome bonus. They offer the second, third, fourth or even fifth chance at extending your gameplay and possibly winning again.

If you enjoy playing for real money and play more than one game at a time, checking out any VIP or rewards programs can be a good idea. Many casinos acknowledge their loyal customers with exclusive promotions and are more than happy to offer customised bonuses in return.

Wagering & Max Cashout on a 400% Bonus

Wagering & Max Cashout on a 200% bonus

The wagering and the max cashout is where this match bonus significantly differs from the smaller offers. Almost always, a bonus as big as 400% will have higher wagering requirements and a smaller max bonus compared to a 100% bonus. For example, the playthrough can be as high as 50x or more. While the max bonus money can be limited to about £40.

Whenever possible, look for casinos with higher winning limits and lower wagering requirements to get the most out of your bonuses.

Discover More Deposit Bonuses at JohnSlots!

Now that you know what to expect from a 400% bonus, you can start looking for these rarest of bonuses. We currently don’t have any UK casinos with this bonus, but we have plenty of other equally effective offers at the ready that could work just as well for you. Claim a 100% casino bonus or 200% deposit bonus and enjoy the play! Check back for regular updates!

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