Casino Bonus Codes UK: Top Online Casinos with Bonus Codes

You can find plenty of exclusive bonus codes and even no deposit bonus codes at Slotsia. When you browse through our list of casinos, you will see the details of each Welcome Bonus, along with a bonus code, like ‘SLOTSIA99‘ for example, which you can then use to redeem your free bonus.

These offers do not require you to deposit any cash to receive them, so they are essentially free to use. All you have to do is register an account at your chosen casino, follow the instructions, input your bonus code and get playing. These codes are few and far between, and highly sought-after, so make sure you get your hands on one today!

Read on to find out all you need to know about bonus codes and how to use them. Not forgetting the list of our top-rated casinos with exclusive bonus code offers that you can use to play with a bonus right now!

Latest Casino Bonus Codes

Check out our list with the latest no deposit bonus codes. Just scroll through the list of casinos with offers available to find the perfect one for you, click the link and you will be taken to the casino, ready to take advantage of the offer. Use the bonus code, just like you would use a discount code at the checkout of your favourite online shop, and redeem your promotional offer!

CasinoRatingFreespinsBonusInfo
2
50extra spins
£1200bonus
  • Welcome bonus for new players
  • Double your first deposit up to £500
  • 50 Spins with Bonus Code "bFIFTY"
New customers only. Free spins are valid on the games: 108 Heroes and the Phantom of the Opera. £20 deposit minimums. 30X wagering on deposit + bonus. Slots only. Some slots not allowed. Wagering contributions vary by game. Moving from low to high wagering slots not allowed. Max bet £5. €5000 max winnings. Full T&Cs apply.
New customers only. Free spins are valid on the games: 108 Heroes and the Phantom of the Opera. £20 deposit minimums. 30X wagering on deposit + bonus. Slots only. Some slots not allowed. Wagering contributions vary by game. Moving from low to high wagering slots not allowed. Max bet £5. €5000 max winnings. Full T&Cs apply.
3
25extra spins
£0bonus
  • 1st deposit: 25 wager-free free spins (bonus code: PLAY25)
  • Offers over 300 casino games!
18+. First-time depositors only (UK exc NI). Min Deposit: £10. Max Offer: 25 Free Spins [on a game of our choice]. Free Spins Winnings will be capped at £2.50 and credited as bonus funds. 40x wagering applies to bonus funds. Unused Free Spins expire after 7 days. Promo code: PLAY25. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & full T&Cs apply. Valid until further notice. BeGambleAware.org
18+. First-time depositors only (UK exc NI). Min Deposit: £10. Max Offer: 25 Free Spins [on a game of our choice]. Free Spins Winnings will be capped at £2.50 and credited as bonus funds. 40x wagering applies to bonus funds. Unused Free Spins expire after 7 days. Promo code: PLAY25. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & full T&Cs apply. Valid until further notice. BeGambleAware.org
4
10extra spins
£200bonus
  • Quality slots
  • Great welcome offer
  • Bonus code: WELCOMENB
18+. New players only. £10+ deposit, no E-wallets/prepaid cards. Use bonus code: WELCOMENB. 30x playthrough on bonus and 50x on free spins. £500 cap on bonus winnings. T&Cs apply. BeGambleAware.org
18+. New players only. £10+ deposit, no E-wallets/prepaid cards. Use bonus code: WELCOMENB. 30x playthrough on bonus and 50x on free spins. £500 cap on bonus winnings. T&Cs apply. BeGambleAware.org
5
29extra spins
£29bonus
  • Bonus match + free spins
  • Use bonus code GET29
  • Great selection of games
T&Cs: First-time depositors only (18+ UK exc. NI). Min Deposit £10. Max Offer 100% Bonus up to £29 & 29 Free Spins [Game of our Choice]. Free Spins winnings are capped at £2.90 and credited as bonus funds with 40x wagering. Bonus funds must be wagered 60x before withdrawal. Bonus funds winnings are capped at £100 + original bonus amount. Free Spins expire after 7 days. Promo code: GET29. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & full T&Cs apply. Valid until 31/08/2020.
T&Cs: First-time depositors only (18+ UK exc. NI). Min Deposit £10. Max Offer 100% Bonus up to £29 & 29 Free Spins [Game of our Choice]. Free Spins winnings are capped at £2.90 and credited as bonus funds with 40x wagering. Bonus funds must be wagered 60x before withdrawal. Bonus funds winnings are capped at £100 + original bonus amount. Free Spins expire after 7 days. Promo code: GET29. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & full T&Cs apply. Valid until 31/08/2020.
6
50extra spins
£0bonus
  • Deposit £10 and get 50 spins
  • Use bonus code!
  • Nice game selection
18+. First-time depositors only (UK exc NI). Min Deposit: £10. Max Offer: 50 Free Spins [Fluffy Favourites]. Free Spins Winnings will be capped at £5 and credited as bonus funds. 40x wagering applies before being eligible for withdrawal. Unused Free Spins expire after 7 days. Promo code: PLAY50. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & Full T&Cs apply. Valid until 31.12.2020.
18+. First-time depositors only (UK exc NI). Min Deposit: £10. Max Offer: 50 Free Spins [Fluffy Favourites]. Free Spins Winnings will be capped at £5 and credited as bonus funds. 40x wagering applies before being eligible for withdrawal. Unused Free Spins expire after 7 days. Promo code: PLAY50. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & Full T&Cs apply. Valid until 31.12.2020.
7
10extra spins
£20bonus
  • First deposit match to £20
  • 10 Free spins on Fluffy in Space
18+. First-time depositors only (UK exc NI). Min. Deposit £10. Max Bonus 100% up to £20 & 10 Free Spins on Fluffy in Space. To withdraw games bonus & related winnings, wager 60x the amount of the bonus.Slots Bonus funds winnings are capped at £100 + original bonus amount Free Spins Winnings will be capped at £1.00 and credited as bonus funds with 40x wagering. Free Spins expire after 7 days. Promo code: BONUS20. Deposit balance is available for withdrawal at any time. General withdrawal restrictions &  full T&Cs apply. Valid until 31.12.2020. BeGambleAware.org
18+. First-time depositors only (UK exc NI). Min. Deposit £10. Max Bonus 100% up to £20 & 10 Free Spins on Fluffy in Space. To withdraw games bonus & related winnings, wager 60x the amount of the bonus.Slots Bonus funds winnings are capped at £100 + original bonus amount Free Spins Winnings will be capped at £1.00 and credited as bonus funds with 40x wagering. Free Spins expire after 7 days. Promo code: BONUS20. Deposit balance is available for withdrawal at any time. General withdrawal restrictions &  full T&Cs apply. Valid until 31.12.2020. BeGambleAware.org
8
10extra spins
£10bonus
  • Deposit £10 and get £10 in bonus
  • 10 spins on Starburst
  • Bonus code: KAISER
18+. New customers only, Minimum deposit £10. Maximum bonus £10 and 10 spins on Starburst. Wagering requirement applies 35x. Promo code: KAISER. Withdrawal & Full T&Cs apply. BeGambleAware.org
18+. New customers only, Minimum deposit £10. Maximum bonus £10 and 10 spins on Starburst. Wagering requirement applies 35x. Promo code: KAISER. Withdrawal & Full T&Cs apply. BeGambleAware.org
9
30extra spins
£0bonus
  • Deposit £10, get 30 spins
  • Bonus code: PLAY30
18+. New customers only. Min Deposit £10, Max Bonus 30 Spins on Starburst. Wagering (x40) & Max Conversion (x4). Promo Code: PLAY30. Withdrawal & Full T&Cs apply. Valid until further notice. BeGambleAware.org
18+. New customers only. Min Deposit £10, Max Bonus 30 Spins on Starburst. Wagering (x40) & Max Conversion (x4). Promo Code: PLAY30. Withdrawal & Full T&Cs apply. Valid until further notice. BeGambleAware.org
10
30extra spins
£0bonus
  • Deposit £10 and get 30 free spins
  • Good selection of casino games
18+. New customers only. Min Deposit £10, Max Bonus 30 Spins on Starburst. Wagering (x40) & Max Conversion (x4). Promo Code: SPIN30. Withdrawal & Full T&Cs apply. Valid until further notice. BeGambleAware.org
18+. New customers only. Min Deposit £10, Max Bonus 30 Spins on Starburst. Wagering (x40) & Max Conversion (x4). Promo Code: SPIN30. Withdrawal & Full T&Cs apply. Valid until further notice. BeGambleAware.org
11
25extra spins
£0bonus
  • 25 wager free spins
  • Promo Code: PLAY25
  • Get up to 50 spins every day with Zinger Rewards
First-time depositors only (18+ UK exc NI). Min Deposit: £10. Max Offer: 25 Free Spins [on a game of our choice]. Free Spins Winnings will be capped at £2.50 and credited as bonus funds. 40x wagering applies to bonus funds. Unused Free Spins expire after 7 days. Promo code: [PLAY25]. Deposit balance is available for withdrawal at any time.  Valid until further notice. General withdrawal restrictions & full T&Cs apply. BeGambleAware.org
First-time depositors only (18+ UK exc NI). Min Deposit: £10. Max Offer: 25 Free Spins [on a game of our choice]. Free Spins Winnings will be capped at £2.50 and credited as bonus funds. 40x wagering applies to bonus funds. Unused Free Spins expire after 7 days. Promo code: [PLAY25]. Deposit balance is available for withdrawal at any time.  Valid until further notice. General withdrawal restrictions & full T&Cs apply. BeGambleAware.org
12
50extra spins
£100bonus
  • 100% bonus on first deposit
  • 50 spins with bonus code NOVILADIES4
  • Exclusive bonus only available at Slotsia!
18+, KYC verified, New UK players only, Min deposit £10, 100% bonus up to £100 + 50 Free Spins on Starburst, spin value £0.10, Min 35x wagering, bonus code NOVILADIES4, Skrill & Neteller deposits excluded, bonus & free spins valid for 30 days. T&Cs apply.
18+, KYC verified, New UK players only, Min deposit £10, 100% bonus up to £100 + 50 Free Spins on Starburst, spin value £0.10, Min 35x wagering, bonus code NOVILADIES4, Skrill & Neteller deposits excluded, bonus & free spins valid for 30 days. T&Cs apply.
13
25extra spins
£100bonus
  • 25 spins on your 1st deposit on Gonzo's Quest
  • Use Bonus Code GONZO25
  • 200% up to £100
18+. New players only. Wagering occurs from real balance first. 50x wagering the bonus or any winnings generated from free spins, contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus is valid for 30 Days / free spins valid from 7 days from issue. Max conversion: 3 times the bonus amount or from free spins: £20. Excluded Skrill deposits. Full T&Cs Apply. BeGambleAware.org
18+. New players only. Wagering occurs from real balance first. 50x wagering the bonus or any winnings generated from free spins, contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus is valid for 30 Days / free spins valid from 7 days from issue. Max conversion: 3 times the bonus amount or from free spins: £20. Excluded Skrill deposits. Full T&Cs Apply. BeGambleAware.org

What Exactly Is a Bonus Code?

A casino bonus code is a code that a casino will use to identify a promotional offer on its site. Codes are generally either a series of letters or numbers or both, or a simple phrase that is linked to the nature of the bonus. For example, if one such offer was for a Halloween themed slot game and offered £10 free play on a slot game, the bonus code used may be something like: ‘HAL10FREE

Generally speaking, each offer will have a different bonus code and, usually, the terms and conditions of the offer will give you instructions on how the casino bonus code can be used. If the offer doesn’t require a deposit, you can use the no deposit bonus code to get your bonus for free, straight away! Sometimes you might have to make a deposit before you can enter the code and get your bonus, in which case it is simply a casino bonus code.

Play OJO widget 2
  • Lots of campaigns
  • VIP club
  • Good selection of jackpot games
5 stars icon PlayOJO casino review
18+. T&Cs apply.
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Dunder big widget
  • Top-notch mobile casino
  • Great casino games
5 stars icon Dunder casino review
18+. T&Cs apply.
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Playkasino big widget
  • Easy navigation
  • Over 1000 games selection
  • Nice design
5 stars icon Playkasino casino review
18+. T&Cs apply.
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How to Claim Your Bonus Code

If you have ever used discount codes or vouchers when shopping online, then using Slotsia’s bonus codes are very similar and equally easy to use. Here are the steps:

  1. Follow the link and register your details with one of our recommended online casinos to create an account;
  2. Head over to the banking or account section of your casino;
  3. Check the instructions or terms to see where you can enter your bonus code;
  4. When you enter the bonus code for your offer, make sure it’s correct. Double-check here for any hyphens, capitalisation and spelling of words to ensure you enter the code accurately. An example of a bonus code offer could be something like: ‘SLOTSIA-BONUS100‘;
  5. If you have to make a deposit, ensure you deposit at least the minimum amount required to activate the bonus and that you use a payment method that’s not excluded;
  6. Click redeem. The code should then be activated and your bonus will be available almost immediately! 

Where Can you Find the Best Bonus Codes?

We know that no deposit casino codes are highly-valued by casino players. The great news is that it is easy to find some of the very best offers right here on our top list at Slotsia! How do you know a good casino promotion from a bad one? Some of the things you should be looking for with a good no deposit bonus code offer are:

  • An offer that gives you flexibility over where you can play, such as by offering you the opportunity to redeem your bonus over a choice of slot games, rather than just one.
  • Offers that enable you to play brand new slot games, or established slot games that are very popular.
  • Bonuses with a relatively low wagering requirement.
  • Ideally, choose an offer with a high or no maximum cash out value on any winnings from the bonus.
  • Select an offer where you can use a casino bonus code, spend the bonus and then redeem another bonus on your next deposit, such as those in a Welcome Package.
  • Find a promotion where you can use a bonus code alongside another offer, such as a deposit bonus so that you can have a multitude of free play!

Bonus Code FAQs

✔️ What is a no deposit bonus code?

A no deposit bonus code is a code that allows you to redeem a bonus without making a deposit. A bonus code generally is a combination of letters and numbers, as in the example: SLOTSIA99.

✔️ How do I receive my bonus code?

Find your bonus code in our list of offers or in the bonus section of our casino reviews at Slotsia. Enter your bonus code, as instructed by the casino, to get your bonus! You usually enter it in the banking or account section of the site.

✔️ Where can I get the best no deposit casino bonus codes?

Have a look at our list of casinos with bonus code offers on this page. The list is regularly updated, so you can check back to find out what the best deals are at any particular time.

✔️ What are the benefits of casino bonus codes?

The main benefit of casino bonus codes is that they are easy to use, easy to apply and give you the chance to redeem a number of bonuses, including cash or free spins, to trial a casino with. Sometimes they can be used in conjunction with a deposit bonus. With a bonus code, you can get an exclusive bonus, only available here at Slotsia, without having to deposit any money!

✔️ Can I use a bonus code more than once?

No, you can only sign up and get a new player offer once. Your bonus code is only valid when you're a new player and will give you a one-time offer. However, you can sign up at several different casinos on our list and use your exclusive bonus codes to redeem more offers!