Online casino bonuses in the United Kingdom
One of the things I’ve heard most from people who come to KasinoBonus is that they know they should be claiming online casino bonuses—but they don’t know how to actually find them. With thousands of online casinos operating today, and tens of different bonuses, choosing ones with fair terms and generous amounts can seem darn-near impossible!
That’s exactly why I decided to write this page: to help you find the best casino bonus in the UK, understand how these bonuses work—and show you my personal favorite recommendations that you can claim right now.
Best Online Casino Bonuses 2025
To make it as easy as possible for you to find the best online casino bonuses in the United Kingdom, I’ve compiled a table of my favorite offers below. Here, you can see the casino I recommend and information about the bonus they’re currently offering.
- Play on Android, iOS, and desktop
- Live chat support is available 24/7
- VPN allowed
- Deposit Bonus 225% UP to 450£ + 250 FS ON YOUR FIRST 3 DEPOSITS
- FREE 20 freespins no deposit
- Deposit Bonus 100% 300€
- 50 no deposit free spins with promo code 50FS
- Solid lineup of providers — Pragmatic, Nolimit City, Relax
- Quick withdrawals and decent support
- Built‑in crypto wallets with support for over 20 coins
- 4,000+ games
- Tiered VIP ladder offering
- Home to more than 80 gaming providers
- 24/7 live chat
- Excellent selection of payment methods
- Regular players can benefit from their loyalty program
- No deposit bonuses can be activated
- Their online slots include titles with progressive jackpots
- For bettors, they provide a sports betting section
- Total value of free spins: €2 (20 spins at €0.1 per spin)
- Wagering criteria: 40X
- Maximum bet: €0.5 (wagering)
- Operate under UKGC and MGA
- Live chat available
- Mobile friendly design
- Top tier software providers
- Supports 9 languages
- Many responsible gambling tools
- Extensive game collection
- 24/7 live support
- No wagering: 50 free spins without wagering for Gates of Olympus when you make a deposit.
- Deposit bonus: 250 free spins for 3 first deposits
- FREE 100 freespins (deposit needed)
- Deposit Bonus 100% 300€
- Extensive game selection from over 150 software providers
- Mobile-optimised website
- Offers both traditional sports betting and eSports
- Multiple payment options
- Home to leading software providers
- Live chat is available
- Home to more than 5,000 games
- 24/7 live chat
- Multi-lingual support available
- Welcome bonus 100% up to €500 + 200 FS + 1 Bonus Crab
- Weekly Reload 50 Free Spins
- Weekend Reload Bonus €700 + 50 Free Spins
- FREE 100 freespins no deposit needed (Betfury Bonanza, Joker Stoker, Bastet, Cats)
- Deposit Bonus 200% to 500$ USE CODE: KASINOBONUS
- FREE 32$, no deposit bonus, use code FREE32KASI
- Deposit Bonus 250% match bonus
- FREE 100 free spins (deposit needed)
- Deposit Bonus 100% 200€
- FREE Deposit 10€ -> Get 100 Freespins - NO WAGER!
- Deposit Bonus 100 wager free spins (50$ deposit needed)
- 10% Cashback Sportsbetting
- FREE 30$ (25$ deposit needed)
- Deposit Bonus 250% match bonus
- 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
I’ve spent years compiling a list of the best casino bonuses—and I’m always careful to make sure this table is updated regularly. What’s more, any casino/bonus I recommend on KasinoBonus is one that I’ve personally claimed and tested.
How We Review Casinos
Here at KasinoBonus, I’ve made sure that our review process is as detailed, transparent, and in-depth as possible. As a player, I know how important it is to be able to access unbiased, factual information about casinos you’re thinking of joining—and that’s why I can guarantee that you’ll never find fake, untrue, or biased content here.
Our process begins with very detailed research to explore the ‘basics’ of what the casino has to offer. This includes looking at who owns the brand (and whether any previous companies have operated them in the past), which online gambling they hold, and what the general security of their website is like.
- Hands-On Testing. Next, our team of experts personally registers at each casino, deposits real money, and redeems promotions just like any new player would. This approach allows us to give you a truly honest and realistic expectation of what to expect. Not only do we deposit our own cash—but we also try to withdraw, too! This means we’re able to provide you with honest information about payout speeds, fees, and everything else you’d want to know.
- Game Library Analysis. In addition to all of the above, our team of experts will also look at what kind of game range the online casino offers—we look at everything from the number of game developers on offer, the rate at which new games are released—and, of course, whether there are any live casino games available or not.
- Payment Method Selection: We thoroughly examine all available payment methods, checking that there’s both good variety on offer – and, that there are no fees or unfair charges.
- Customer Support. We then look at which payment methods you can use, and personally test the customer support facility.
- Licensing and safety: If an online casino wants to operate in the UK, it needs a license from the United Kingdom Gambling Commission (UKGC) – no exceptions. All of our reviews ensure sites hold all appropriate licenses.
Top Bonuses in July
Here at KasinoBonus we’re always on the lookout for the best casino bonuses available to UK players. That’s why, each month, our team goes through – and finds – the best UK-specific bonuses and promotions that are available to claim – and if you’re curious about our top picks for July, you can find a list of recommended bonus offers, below!
| CASINO | BONUS OFFER |
|---|---|
| Paddy Power | Deposit £10 → 60 Free Spins (no deposit) + 100 Spins on deposit |
| BetMGM UK | 100% up to £200 + 100 Free Spins |
| Sky Vegas | 50 Free Spins (no deposit, no wagering) + Deposit £10 → 200 Free Spins |
| Virgin Bet | Stake £10 on slots → 100 Free Spins |
Types Of Casino Bonus
I going to describe each casino bonus type below.
- Welcome Bonuses: Welcome bonuses are, by far, the most common—and popular—type of promotion found at an online casino. These offers allow you to get rewarded for signing up and joining a site as a new player, and while the actual contents of a welcome bonus can vary a lot, it’s usually delivered in the form of a matched-deposit bonus, free spins, or a combination of both! The deposit bonus allows you to activate the free spins bonus.
- No Deposit Bonuses: While they’re a lot harder to come by, no deposit bonuses are also incredibly popular. These promos allow you to claim a set number of free spins, or a small amount of casino cash, without you needing to make a deposit first!
- Free Spins: Free spins bonuses are ideal for slot players, as they allow you to spin the reels of a selected video slot a certain number of times. Now, some online casinos run free spins promotions when new games are released, while others offer them as part of loyalty programs or VIP schemes.
- Cashback: For those who expect to stick around, cashback bonuses are a great safety net. By receiving a percentage of your losses back, you can extend your playtime and reduce the sting of potential downswings. Cashback is usually offered as part of a loyalty or rewards system.
- Reload Bonuses and Ongoing Promotions: As you become a regular player at a casino, you may be able to claim special reload bonuses. These are typically delivered in the form of matched deposit bonuses, although the percentage you can claim is usually lower than welcome bonuses—often 50%, for example.
- High-Roller Bonuses: High-roller bonuses, as the name suggests, are designed for players who are… quite simply high rollers! They often offer more relaxed terms, have higher withdrawal limits, and the bonus funds can usually be played on a larger range of games.
Terms and Conditions
When reviewing or claiming any online casino bonus, you should be aware that almost every bonus you claim will come with terms and conditions attached. Some of the key ones to be aware of include:
- Wagering Requirements: Most casino bonuses come with wagering requirements, meaning you must bet a certain multiple of the bonus amount before you can withdraw any winnings. For example, if a bonus has a 35x wagering requirement and you claim a $100 bonus, you’ll need to wager $3,500 before you’re able to request a withdrawal.
- Game Restrictions: Not all games contribute equally to wagering requirements. Slots usually count 100%, while table games like blackjack or roulette may contribute less—or not at all. It’s common for casino tables and live games to be excluded from bonuses completely.
- Maximum Bet Limits: Many casinos impose a maximum bet per spin or round when using a bonus. Exceeding this limit, even accidentally, can void your winnings. This is often set around $5 per spin but varies by casino.
- Expiration Dates: Bonuses aren’t valid forever! Most promotions must be used within a set timeframe—often 7 to 30 days. Free spins may have even shorter expiration periods, sometimes just 24 hours. Always make sure that you use your bonuses within the time frame, as you won’t (usually) be able to get them back once they expire!
How Casino Bonuses Work
Casino bonuses are promotions offered by most – but not all – online casinos that are designed to attract new players and reward loyal customers. These bonuses can come in a variety of different forms – including free spins, deposit matches, cashback, and no-deposit promotions. Despite the multiple formats, however, all of these bonuses share one thing in common: they’re designed to give you more value – and time to play.
Now, at most online casinos, when you sign-up and join, you’ll be presented with a welcome bonus. This might be a match bonus (e.g. 100% up to £100), meaning the casino will match your first deposit up to a certain amount – or it might be free spins. It can, in some instances, be a combination of both, too! Of course, these welcome bonuses are designed to attract new sign-ups, but existing players can also enjoy a variety of perks.
Active players, for example, may be offered things like reload bonuses, cashback on losses, loyalty rewards – or even entry into VIP or loyalty programs!
Popular Online Slots with Free Spins Bonus
| ONLINE SLOT | GAME PROVIDER | BONUS FREE SPINS | RTP | CASINO BRAND |
|---|---|---|---|---|
| Sweet Bonanza | Pragmatic Play | 20 | 96.51 % | Rollino |
| Book of Museum | GameArt | 25 | 96.10 % | Horus Casino |
| Angry Dogs | GameArt | 25 | 96.36 % | Kryptosino |
| Hollywoof | GameArt | 25 | 96.10 % | Vegaz Casino |
| Sweet Bonanza | Pragmatic Play | 30 | 96.51 % | Megapari |
| Book of Dead | Play’n GO | 25 | 96.21 % | BetMaximus |
| Ruby Win Hold the Spin | Gamzix | 25 | 96.00 % | LevelUp Casino |
| Betfury Catch Bonanza | NetGame | 100 | 96.05% | BetFury |
| Joker Stoker | Endorphina | 100 | 96.00% | BetFury |
| Bastet and Cats | Betfury | 100 | 96.20% | BetFury |
| Doors Of Fresh | BGaming | 50 | 96.85 % | Fresh Casino |
| Gates of Olympus | Pragmatic Play | 50 | 96.50 % | Campeonbet |
| Alien Fruits | BGaming | 50 | 97.00 % | Drip Casino |
Jackpots in Online Slots Today
| № | Name | Amount | Details |
|---|---|---|---|
| 1 | Betsoft Gaming |
€1,851,014
|
|
| 2 | iSoftBet |
€441,074
|
|
| 3 | Microgaming |
€10,720,105
|
|
| 4 | Netent |
€219,152
|
|
| 5 | Play'n GO |
€168,904
|
|
| 6 | Playtech |
€3,983,442
|
|
| 7 | Yggdrasil |
€402,884
|
Why Trust KasinoBonus.ai?
At KasinoBonus.ai, trust is the foundation of everything we do. Here’s why thousands of readers rely on us:
- 50,000 readers every month
- 150 online casinos are tested
- 400+ hours per month spent on casino research and content creation
- Every casino we list is personally tested by our team (screenshots of accounts, deposits, and wins).
- Our reviews are written and reviewed by iGaming professional Matti Slotte with 18 years of experience in poker, casino operations, and European gambling regulation.
- We talk openly about our affiliate partnerships and never accept payment for positive reviews.
- We update our rankings and bonus details every month to show the most accurate and up-to-date information available.
- We recommend only licensed, safe, and responsible online casinos.
Responsible Gambling, Addiction – and Resources
Here at KasinoBonus, we strongly believe that gambling should always be an enjoyable and recreational activity – and never a source of stress, financial difficulty, or emotional harm. That’s why we fully support and promote responsible gambling. For example, we strongly suggest setting limits on your time and spending, only gambling with money you can afford to lose – and, recognising when it’s time to take a break.
Every casino we list is licensed by reputable regulatory bodies, like the UK Gambling Commission, which require operators to provide tools like deposit limits, reality checks, time-outs, and self-exclusion.
However, we also recognise that for some individuals, gambling can become problematic – after all, gambling addiction is a recognised behavioural disorder that can affect anyone – regardless of age, background, or experience level. It may start with chasing losses, gambling more frequently, or using gambling as an escape from stress or low mood. Warning signs include hiding gambling activity, borrowing money to gamble, or feeling anxious or irritable when trying to cut back. If you suspect that gambling is no longer under your control, it’s important to seek help as early as possible.
There are many excellent resources available for those who need support. In the UK, organisations such as GamCare, BeGambleAware, and the National Gambling Helpline offer confidential, professional assistance. You can also access free tools like GAMSTOP, which blocks access to all UK-licensed gambling sites. Some resources are listed below:
- UK Gambling Commission
- GambleAware
- National Gambling Clinic
- GamCare
- National Gambling Treatment Service
- GamStop
- https://www.responsiblegambling.org/
- https://safergamblinguk.org/
- https://www.gambleaware.org/
Online gambling is an entertainment with the purpose of having a good time, but is not intended for financial gain. You should not pursue winning. Gambling addiction is a behaviour that can have very serious consequences for your life. If you feel you can not stop gambling, seek help immediately - all the contacts you need can be found on our Gambling Addiction page.
Gambling Foundation offers free and confidential support to anyone suffering from problem gambling in Finland.
