Top UK Online Casinos with Bonus Codes

You can find plenty of exclusive bonus codes at Slotsia. When you browse through our list of casinos, you will see the details of each Welcome Bonus, along with a promotional code, like ‘SLOTSIA99‘ for example, which you can then use to redeem your new player bonus.

As well as deposit codes, there are some offers that 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 and get playing. These codes are few and far between, and highly sought-after, so make sure you get your hands on one when they are available!

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

Latest Casino Bonus Codes

Check out our list of casinos with the latest offer codes. Just scroll down to find the perfect one for you, click the link and you will be taken to the casino, ready to take advantage of the welcome bonus. Use the promo code, just like you would use a discount coupon or a gift card at the checkout of your favourite online shop, and redeem your bonus spins and bonus money!

2
4/5
45 extra spins
£150 bonus
  • 100% bonus on first deposit
  • 45 spins with bonus code SLOTSIA30
  • Exclusive bonus only available at Slotsia!
18+. NEW PLAYERS ONLY. T&CS APPLY. BEGAMBLEAWARE.ORG | KYC verified | Min deposit £10 | 100% bonus up to £150 + 45 Free Spins | 15 free spins on Book of Dead spin value = £0.10 + 30 Free Spins on Narcos spin value = £0.20 | Min 35x wagering | Bonus code: SLOTSIA30 | Skrill & Neteller deposits Excluded | Bonus & Free Spins Valid for 30 days | General Promotions Terms Apply
3
3.5/5
25 extra spins
£25 bonus
  • Deposit £10 - £25 for a 100% Deposit Bonus
  • 25 Spins on Your 1st Deposit
  • Bonus Code: 'BAZAAR'
First-time depositors only (18+ UK Only - excluding players based in Northern Ireland). Min Deposit £10. Max Offer: 100% Bonus up to £25 Bonus Plus 25 Free Spins. Promo code: BAZAAR Bonus winnings must be wagered 60x. FS x40. Full T&Cs apply
4
3/5
25 extra spins
£0 bonus
  • 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
5
3/5
10 extra spins
£200 bonus
  • 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
6
3/5
29 extra spins
£29 bonus
  • 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.
7
3/5
50 extra spins
£0 bonus
  • 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.
8
3/5
10 extra spins
£20 bonus
  • 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
9
3/5
10 extra spins
£10 bonus
  • 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
10
3/5
30 extra spins
£0 bonus
  • 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
11
3/5
30 extra spins
£0 bonus
  • 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
12
3/5
25 extra spins
£0 bonus
  • 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
13
3/5
25 extra spins
£100 bonus
  • 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

What Exactly Is a Bonus Code?

Online casino bonus 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 Starburst and offered 50 free spins on your first deposit, the casino promo code used may be something like: ‘STARBURST50

As well as bonus spins, you can enter your code to claim cash bonuses, bonus money, free spins no wagering and reload bonuses. Depending on the bonus you get, you could play slots, table games and even live games with it!

No Deposit Casino Bonus Codes

How to Claim Your Bonus Code

If you have ever used discount coupons 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 UK casino;
  3. Check the instructions or terms to see where and when you can enter your promotional code;
  4. When you enter it, make sure it’s correct. Double-check here for any hyphens, capitalisation and spelling of words to ensure you enter the it accurately. An example of a deposit code offer could be something like: ‘SLOTSIA100SPINS‘;
  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 offer should then be activated and your bonus will be available! 

Casinos with welcome packages offer multiple bonuses with a code required on each deposit. This means you could get rewarded up to your 3rd, 4th or 5th deposit!

Where Can you Find the Best Bonus Codes?

We know that casino codes are highly-valued by casino players, especially no deposit bonus codes. The great news is that it is easy to find some of the very best offers right here at Slotsia!

But, when it comes to choosing, how do you know a good casino promotion from a bad one? Here are some of the things you can check before redeeming an offer. Because many different types of casinos have these offers, it’s preferable to choose:

  • 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 win cap and no maximum cash out value on any winnings from the bonus.
  • Select an offer where you can redeem an additional bonus on your 2nd deposit, or even additional deposits, 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 extra chances to win!

Bonus Code FAQs

A casino promo code allows you to redeem a bonus that would otherwise be unavailable. On the whole, they are a combination of letters and numbers, as in the example: SLOTSIA99. Think of these codes as unlocking unseen & exclusive offers!

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

Have a look at our list of casinos that offer these exclusive deposit code promotions. The list is regularly updated, so you can check back to find out what the best deals are at any particular time.

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 promotional casino code, you can get an exclusive bonus, only available here at Slotsia!

No, you can only sign up and get a new player offer once. Your 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 promo codes to redeem more offers!