Best Online Casino Bonus Codes in UK
Casino bonus codes are promotional codes that unlock special bonuses when signing up at an online casino or making a deposit. These codes can “unlock” a wide variety of perks from free spins and deposit match bonuses to cashback rewards and even real cash!
Today, many casinos apply bonus codes automatically to your account, but there are some that require you to enter them manually—and today, I’ll show you the best casino bonus codes in the UK, where to find them, and how to claim them!
UK Casino Bonus Codes
If you’re looking for the best casino bonuses with welcome codes, look no further! I’ve compiled a list of the best codes below, all of which come from reputable, legitimate, and trusted online casinos.
- FREE 20 freespins no deposit
- Deposit Bonus 100% 300€
- FREE 25 Freespins to Book of Dead - NO DEPOSIT. IMPORTANT - USE Promo Code: BOOK25 after registration to get the spins!
- Deposit Bonus Deposit bonus 300% up to 300 EUR. Use code KB300. 35x wager
- FREE 50 free spins no deposit
- Deposit Bonus 100% 300€
- Deposit Bonus 100% 500€
- FREE 200 free spins (deposit needed)
- FREE 10 Freespins to Dawn of Olympus – NO DEPOSIT. IMPORTANT – USE Code: Olympus10 after registration to get the spins!
- Deposit Bonus 300% to 600 EUR
- FREE 25 Freespins to Book of Museum – NO DEPOSIT. IMPORTANT – USE Code: LP25 after registration to get the spins!
- Deposit Bonus 300% to 600 EUR
- FREE 25 Freespins to Angry Dogs – NO DEPOSIT. IMPORTANT – USE Code: LP25 after registration to get the spins!
- Deposit Bonus 100% to 1000 EUR
- FREE 25 Free Spins NO Deposit to Hollywoof (Gameart). IMPORTANT – USE Code: LP25 after registration to get the spins!
- Deposit Bonus 300% to 600 EUR
- FREE 30 Freespins to Sweet Bonanza – NO DEPOSIT. IMPORTANT – USE Code: “KASBONUS30” under “My account” -> “Bonuses and gifts”
- Deposit Bonus 100% up to 1950 EUR + 150 free spins
- FREE 15 Freespins NO DEPOSIT to Mini Games: AERO, Frog, Teleport, Icefield, Roulette, Chicken, Dino
- Deposit Bonus 100% to 1000€
- FREE 25 Freespins to Ruby Win Hold the Spin - NO DEPOSIT. USE Code: "shoruby" after registration
- Deposit Bonus 100% up to 2000 EUR + 100 free spins
- FREE 20 Free Spins NO Deposit
- Deposit Bonus 100% to 100 EUR
- FREE 100 freespins no deposit needed (Betfury Bonanza, Joker Stoker, Bastet, Cats)
- Deposit Bonus 200% to 500$ USE CODE: KASINOBONUS
- FREE 32$, no deposit bonus, use code FREE32KASI
- Deposit Bonus 250% match bonus
- FREE 50 free spins (deposit needed)
- Deposit Bonus 100% 250€
- FREE 100 free spins (deposit needed)
- Deposit Bonus 100% 200€
- FREE Deposit 10€ -> Get 100 Freespins - NO WAGER!
- Deposit Bonus 100 wager free spins (50$ deposit needed)
- 10% Cashback Sportsbetting
- FREE 50 Free Spins (deposit needed)
- Deposit Bonus100% 300€
- FREE 50 freespins (10€ deposit needed)
- Deposit Bonus 100% 200€
- FREE 100 freespins (deposit needed)
- Deposit Bonus 100% 300€
- Deposit Bonus 100 free spins (deposit needed)
- 10% cashback Mondays
- FREE 50 free spins (deposit needed)
- Deposit Bonus 100% 300€
- FREE 30$ (25$ deposit needed)
- Deposit Bonus 250% match bonus
- Deposit Bonus 200 free spins (deposit needed)
- Deposit Bonus 200 freespins (deposit needed)
- FREE 50 Freespins to Gates of Olympus – NO DEPOSIT. IMPORTANT – USE promo code: BLITZ3 at registration!
- Deposit Bonus: Deposit only minimum 10 EUR / 15 EUR / 20 EUR- You will get 100% deposit bonus up to 100€ and 150 Free Spins to Gates of Olympus!
- FREE 10 Freespins to Sugar Rush - NO DEPOSIT. IMPORTANT - USE Promo Code: KBONUS at registration to get the spins!
- Deposit Bonus 225% to 2000€
Once you find a code that interests you, simply enter it during registration or when you’re making your first deposit to claim the promotion!
How We Review Casinos
When reviewing casinos that offer bonus codes, I look at how valuable and fair the promotions are. A great bonus code should give you actual value—whether it’s free spins, bonus cash, or cashback. I also check the wagering requirements, making sure they are reasonable and not designed to trap you!
Once happy, I’ll then look at other aspects of the casino, including their game selection, payment options, customer support facilities, and more.
How To Use Your Bonus Code
Once you’ve decided which bonus code you’re going to use, you need to first sign-up at the appropriate casino. Depending on the code you’ve chosen, you may need to enter it when making a deposit—while, at other sites, you’ll be able to navigate to a special page where you can input your code without needing to make a deposit.
Written by Matti Slotte