Best Online Casino Bonuses - August 2025
Here’s our list of the best casino bonuses, all available today from the UK’s most trusted sites. Compare the best casino sign up deals, bonus funds and free spins offers, together with all the information you need to know about wagering requirements and how to qualify.
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Unibet
Deposit £10 Get £20 Bonus + 150 Free Spins
Bonus Wagering
50x
Free Spin Value
0.10
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Claim Bonus
Go to website
18+ Gambleaware.org. New Customers only. Min Dep £10. Debit card only. Opt-in for bonus funds. Casino 50x wagering, game contributions vary, max. stake applies. Claim offer within 24 hours and use within 30 days.T&Cs Apply.
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32Red
150% Casino Bonus up to £150!
Bonus Wagering
50x
Free Spin Value
-
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Claim Bonus
Go to website
18+. BeGambleAware.org. New accounts only. Min. £10 deposit, debit card only. Up to 50x wagering, game contributions vary, max. stake applies, 7 day expiry. See full terms. #AD
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Betway
Stake £10 Get 125 Free Spins
Bonus Wagering
-
Free Spin Value
£0.10
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Claim Offer
Go to website
New UK customers only. 125 free spins on Big Bass Bonanza (£0.10 per spin) credited after successful £10 deposit and £10 stake on Casino, Vegas or Live Casino. No wagering requirements on free spin winnings. Debit Card deposit only (exclusions apply).18+ BeGambleAware.org. Bet the Responsible Way. Full terms apply.
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10bet
100% up to £50 Welcome Bonus
Bonus Wagering
30x
Free Spin Value
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Claim Bonus
Go to website
New bettors; Use code CASINO; Wager bonus 30x to release bonus winnings; Valid 30 days; Stake contribution, games and payment method exclusions apply; T&C apply; 18+
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LeoVegas
50 Free Spins when you play £10
Bonus Wagering
Free Spin Value
£0.10
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Claim Bonus
New cust only. Opt in & deposit £10+ in 7 days & wager 1x in 7 days on any eligible casino game (excluding live casino and table games) for 50 Free Spins. Wagering contributions vary. Free Spins worth 10p each on Big Bass Splash. 3 day expiry. 18+. T&Cs apply. GambleAware.org.
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BetVictor
Get £30 in Bonuses + 30 Free Spins
Bonus Wagering
40x
Free Spin Value
£0.10
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Claim Offer
Go to website
18+ New customers only. Opt in, deposit, and wager a min of £10 on selected games within 7 days of registration. Get a 3x £10 Casino Bonus Funds for selected games (40x wagering) and 30 Free Spins on Fishin' Frenzy. Max withdrawal £750. T&Cs apply. gambleaware.org | Please gamble responsibly.
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Betfred
Stake £10 on Slots - Get up to 200 Free Spins
Bonus Wagering
-
Free Spin Value
£0.10
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Claim Bonus
Go to website
New customers only. Opt In required. £/€10 min stake on Casino slots within 30 days of registration. Max bonus 200 Free Spins on selected games credited within 48 hours. Free Spins expire after 7 days. iOS app restrictions may apply. Email/SMS validation may apply. Not available in NI. Full T&Cs apply.
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Bet365
Stake £10 and Get up to 500 Free Spins
Bonus Wagering
-
Free Spin Value
£0.10
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Claim Bonus
Go to website
Min. £10 in lifetime deposits required. Offer must be claimed within 30 days of registering a bet365 account. Select prizes of 5, 10, 20 or 50 Free Spins; 10 selections available within 20 days, 24 hours between each selection. Max. prize, game restrictions, time limits and T&Cs apply. Registration required.
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Casumo
100% Bonus up to £100 + 50 Free Spins
Bonus Wagering
30x
Free Spin Value
£0.10
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Claim Bonus
Go to website
18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • BeGambleAware.orgT&Cs apply
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Casumo
100% Bonus up to £100 + 50 Free Spins
Bonus Wagering
30x
Free Spin Value
£0.10
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Claim Bonus
Go to website
18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • BeGambleAware.orgT&Cs apply
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Bet365
Stake £10 and Get up to 500 Free Spins
Bonus Wagering
-
Free Spin Value
£0.10
-
Claim Bonus
Go to website
Min. £10 in lifetime deposits required. Offer must be claimed within 30 days of registering a bet365 account. Select prizes of 5, 10, 20 or 50 Free Spins; 10 selections available within 20 days, 24 hours between each selection. Max. prize, game restrictions, time limits and T&Cs apply. Registration required.
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Betfred
Stake £10 on Slots - Get up to 200 Free Spins
Bonus Wagering
-
Free Spin Value
£0.10
-
Claim Bonus
Go to website
New customers only. Opt In required. £/€10 min stake on Casino slots within 30 days of registration. Max bonus 200 Free Spins on selected games credited within 48 hours. Free Spins expire after 7 days. iOS app restrictions may apply. Email/SMS validation may apply. Not available in NI. Full T&Cs apply.
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BetVictor
Get £30 in Bonuses + 30 Free Spins
Bonus Wagering
40x
Free Spin Value
£0.10
-
Claim Offer
Go to website
18+ New customers only. Opt in, deposit, and wager a min of £10 on selected games within 7 days of registration. Get a 3x £10 Casino Bonus Funds for selected games (40x wagering) and 30 Free Spins on Fishin' Frenzy. Max withdrawal £750. T&Cs apply. gambleaware.org | Please gamble responsibly.
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LeoVegas
50 Free Spins when you play £10
Bonus Wagering
Free Spin Value
£0.10
-
Claim Bonus
New cust only. Opt in & deposit £10+ in 7 days & wager 1x in 7 days on any eligible casino game (excluding live casino and table games) for 50 Free Spins. Wagering contributions vary. Free Spins worth 10p each on Big Bass Splash. 3 day expiry. 18+. T&Cs apply. GambleAware.org.
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10bet
100% up to £50 Welcome Bonus
Bonus Wagering
30x
Free Spin Value
-
-
Claim Bonus
Go to website
New bettors; Use code CASINO; Wager bonus 30x to release bonus winnings; Valid 30 days; Stake contribution, games and payment method exclusions apply; T&C apply; 18+
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Betway
Stake £10 Get 125 Free Spins
Bonus Wagering
-
Free Spin Value
£0.10
-
Claim Offer
Go to website
New UK customers only. 125 free spins on Big Bass Bonanza (£0.10 per spin) credited after successful £10 deposit and £10 stake on Casino, Vegas or Live Casino. No wagering requirements on free spin winnings. Debit Card deposit only (exclusions apply).18+ BeGambleAware.org. Bet the Responsible Way. Full terms apply.
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32Red
150% Casino Bonus up to £150!
Bonus Wagering
50x
Free Spin Value
-
-
Claim Bonus
Go to website
18+. BeGambleAware.org. New accounts only. Min. £10 deposit, debit card only. Up to 50x wagering, game contributions vary, max. stake applies, 7 day expiry. See full terms. #AD
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Unibet
Deposit £10 Get £20 Bonus + 150 Free Spins
Bonus Wagering
50x
Free Spin Value
0.10
-
Claim Bonus
Go to website
18+ Gambleaware.org. New Customers only. Min Dep £10. Debit card only. Opt-in for bonus funds. Casino 50x wagering, game contributions vary, max. stake applies. Claim offer within 24 hours and use within 30 days.T&Cs Apply.
Welcome to New Betting Offers, where you’ll find a list of the best casino bonuses that are available to claim right now.
Our selection is updated every single month, enabling you to take advantage of the most generous welcome bonuses and promotions as they become available.
We are the only resource you need for the latest casino bonuses from both new sites and the best casinos in the business.
Casino Welcome Bonus of the Month (August 2025)
To get the ball rolling, here’s our pick of the best casino welcome bonuses for the month ahead.
Our expert team has done the research to find the most generous welcome offer available today, specifically looking at the terms of the bonus, its wagering requirements and the quality of the casino as a whole.
Our Pick: Casino Welcome Bonus of the Month
We have been playing online slots and table games for many years, claiming countless welcome bonuses along the way.
So we know exactly what players like yourself are looking for in promotions and bonuses.
We only choose welcome bonuses that a) add genuine value to your play, and b) have fair, manageable terms and conditions attached.
All of the key details of each bonus are provided too, so you can make the best, most informed decision on which online casinos you want to join.
So, without further ado, here’s this month’s best welcome bonus that you can claim right now:
Unibet – Deposit £10 Get £20 Casino Bonus + 150 Free Spins
• USP of the Offer – It’s perfect for both slots and table game players, with bonus funds and free spins combined.
• Wagering Requirements? – 50x
• Our View – “The chance to claim bonus funds and free spins in the same package ensures that all players are satisfied. Ideally, the wagering requirements would be lower, but 50x seems to be the industry standard these days. Otherwise, this is the perfect bonus with which to join this excellent UK licensed casino platform.”
Featured New Casino Bonus of the Month (August 2025)
It can be very difficult for new casino sites to ‘steal’ customers away from the more established brands that have been around for years.
So one tactic they employ to do exactly that is offer generous welcome bonuses to entice new players to join – fantastic news for us and our readers!
As long as the casino in question is licensed, approved and has strong reviews, there’s plenty of value to be had in registering and claiming their welcome package.
Our selection as the best new casino bonus this month is:
32Red – 150% Casino Bonus Up to £150
Although not the newest online casino on the block, 32Red gets our pick as the best new casino bonus of the month as they are constantly updating both their welcome offer and their lobby of games.
Their current offer is a giant 150% bonus on your first deposit up to £150, so there’s plenty of extra value to be enjoyed here by budget players and high rollers alike.
As ever, there’s terms and conditions attached to the bonus funds – including wagering requirements of 50x, but the good news is that the 32Red game library is so expansive, bringing quality and quantity to the table, that most players will find plenty of titles they want to play through their wagering requirements with.
By our count, there’s more than 3,000 games at 32Red, ranging from slots – with NetEnt, Microgaming and Red Tiger amongst those in board – to progressive jackpots, table games, poker and live dealer action.
Popular Types of Casino Bonuses
For newcomers to casino gaming and those seeking a refresher, it’s well worth getting to know the different types of bonuses that are available.
These offers can relate to new customer bonuses or existing player promotions, with each bringing different perks to the party.
Casino Deposit Match Bonus
One of the most common types of welcome bonus, the deposit match is as the name suggests – offering you a 100% bonus on top of your initial deposit.
Some operators, including many listed on this page, go above and beyond with a bonus percentage greater than 100%, e.g. 150%.
Often, the bonus will be attached to your first deposit only, although sometimes there’s offers that also deliver a bonus percentage on your second, third and even fourth deposits.
Free Spins
The most straightforward of casinos bonuses, some operators will simply hand you a stash of free spins to use.
These can be for use on a specific title or handful of slots, although in some cases players are given carte blanche to use them on any game they wish.
Free spins are a great way to explore new slot games without risking your own bankroll, testing out their mechanics and, perhaps, experiencing their bonus rounds and special features.
As you might expect, there are typically wagering requirements associated with free spins. But once you have cleared these, you can withdraw any winnings generated as cash.
On this very page, you can find operators that combine deposit match bonuses with free spins in one single welcome offer.
Free Spins (No Deposit)
Although rarer these days, you can still find casinos that offer free spins to players that register for an account… with no need to make a deposit first.
Of course, if you want to later withdraw any winnings accrued, you will need to make a deposit first.
However, no deposit free spins are a great way to try and build a bankroll without depositing; you can try out the new casino, sample their games and see if this a site that can work for you without having to make a financial commitment first.
Reload Bonus
A reload bonus is similar to a deposit bonus, with a percentage perk paid on top when you make a deposit within a given time frame.
So a reload bonus may look something like: ‘Make a deposit before midnight on Monday and enjoy a reload bonus of 50%.’
A reload bonus will typically have terms and conditions attached, such as wagering requirements etc, but it can still be a good way to get a little bit extra if you were planning to make a deposit anyway.
Loyalty Bonus
Some casinos run a loyalty programme, with points earned relative to how much – and how often – you stake. You can climb the ranks, reach new tiers and earn ‘better’ rewards as a result.
Another type of loyalty bonus is one that celebrates your birthday or the anniversary date of when you joined the casino.
Cashback Bonus
A cashback bonus will see a percentage of your losses in a specific timeframe returned to you, either as cash or bonus credits.
For example, imagine that the cashback bonus is 10% of your losses from the previous week. You have wagered £20 in that time, which means that the casino will give you £2 back… no questions asked.
Cashback bonuses are welcome because they reward you for simply playing your favourite games as you would anyway. However,remember to gamble responsibly – only bet what you have budgeted and can afford to lose.
Refer-a-Friend Bonus
A common bonus, many casino sites will offer you an incentive for introducing friends and family to the brand.
Typically, you will be given a referral link. If somebody you know uses this link, creates an account and makes a deposit, you will receive a reward of some kind – bonus funds, free spins etc.
Mobile Exclusive Bonus
There may be an opportunity to claim a bonus that is specifically tied to mobile devices.
That could be related to downloading the app, with a bonus available exclusively to app users, or a reward for verifying your mobile number by clicking the link inside a text message.
How We Rank and Review the Best Casino Bonuses
We have reviewed and analysed more than 100 online casino sites… that has given us a unique position from which to rank the various welcome bonuses and ongoing promotions that are available.
As players ourselves, we understand what it is that you want from a welcome bonus. But we also know that you only want to play at the most reputable, licensed casinos that are highly rated and have a lengthy history of quality and customer care.
Here’s some of the other criteria that we use in our analysis:
• Welcome Bonus
The welcome bonus itself is one factor. The amount available is obviously key; after all, we all want as many free spins or as high a bonus percentage as possible.
But we should also consider the wagering requirements – are they fair? Can you clear them? How long do you have to play through the wagering? We also consider maximum win limits, which can be a factor for some players, and any game restrictions that impact the bonus or its playthrough requirements.
• Payment Methods
We communicate regularly with online casino enthusiasts, and many reveal to us that payment methods are another key variable in their search.
It’s imperative that the most common payment methods are accepted: Visa, Mastercard, PayPal, Apple Pay, bank transfer etc… any others are a bonus.
But we also want to see deposits go through without a hitch, while the speed of withdrawals being processed is also key – any lengthy delays in our testing automatically secure that particular casino a red flag against their name.
• Site Security & Customer Support
Two elements that often get overlooked, but which are of crucial importance, are site security and customer support.
You wouldn’t risk sharing your personal details or financial information with an unsecured casino, would you? Instead, look for casinos that have SSL encryption in place. Look up at the URL bar of your browser: can you see a padlock icon, and/or https? Both of those are strong indicators of online security.
It’s amazing how few players consider customer support to be of importance… but when you need it, you’ll be glad to have sided with casinos that offer 24/7 support via a range of methods, including telephone, email, live chat and social media.
• Game Library
Of course, we also judge online casinos on the quality of their game library.
We want to see slots and table games sourced from the leading software developers, as well variety that incorporates poker, live dealer roulette and blackjack, plus more besides.
Having free spins, deposit bonuses and the like is fantastic… but only if there’s games you love available to use them on.
• User Experience & Mobile Compatibility
We test all of the casinos we recommend for the user experience they provide on desktop, mobile browsers and dedicated apps where available.
When we say ‘user experience’, we mean how easy the casino is to navigate, how straightforward it is to perform key account functions and the difficulty (or otherwise) of finding your favourite games. Also, being aesthetically pleasing never goes amiss, either.
• Ongoing Promotions
For new players, the emphasis is very much on welcome bonuses. But once you’ve played through those, what else does the casino have to offer?
One of the other most important criteria we look for is ongoing promotions. From reload bonuses to periodic free spins, as well as slot tournaments, birthday rewards and more, this really is a key area that defines the quality and generosity of an online casino.
Why Trust Newbettingoffers.co.uk?
You can trust us to deliver only the best, most value-adding promotions.
• Licensed & Regulated Casinos – We only share bonuses from online casinos that have secured a UKGC licence (the gaming authority for this country), helping to protect you and your money.
• Expert Casino Knowledge – We’ve been scouring the web for the best casinos and bonuses for two decades… that is invaluable industry expertise you can lean on.
• Unbiased Reviews – We have no obligation to promote any particular casinos or brands. If it’s great, we’ll tell you. If it’s not, we’ll also let you know… that’s the perk of being fully independent and impartial.
• Real Money Tested Offers – We don’t pretend to just claim bonuses; we actually go through the whole process, by registering, depositing with real money and using the offer. Our road-testing lets you know exactly what to expect.
• Constantly Updated Offers – Every week, new casino bonuses are launched. And we’ll keep you ahead of the curve, as our list is updated constantly to reflect these changes.
• Focus on Responsible Gambling – Above all else, we want all of our readers to be safe in their gaming, while adhering to the practises of responsible gambling. That’s why we explain bonus terms and conditions in full detail, so you know exactly what is required to claim and play through each offer.
How to Choose the Best Casino Bonus for you
There are literally hundreds of casino bonuses out there that can be claimed right now. So how do you find the offers that are best for you?
Making the wrong choice here will cost you money (i.e. your first deposit) as well as time, given that you’ve had to go through the account registration process.
Before diving in and claiming the first bonuses you see, consider your answers to the questions below to help narrow your search.
1. What is Your Budget?
Most welcome bonuses require you to make a deposit to unlock the subsequent free spins and/or bonus funds that are available.
So what is an amount that you feel comfortable depositing… £5? £10? £20+?
Don’t forget too that clearing wagering requirements can also require investment, so if you’re operating on a tight budget, low deposit bonuses with smaller-than-average wagering may just be the way to go.
At NewBettingOffers, we have detailed casino bonuses to suit all tastes and budgets.
2. Which is Your Favourite Game Type?
As mentioned, there are two main types of casino bonus: free spins and deposit match.
Evidently, free spins promotions are tailored to slot game players; the spins may be for a specific game, a particular series or you may have free rein to use your free turns on any slot.
With deposit matches and bonus funds, generally you have complete control over which game categories you use them on – it could be slots, but you could also try blackjack, roulette, poker, bingo… and so on.
Clearly, you’ll want to tailor your chosen casino bonus to the games that you enjoy playing the most. So be sure to read the terms and conditions of any offer that interests you to see if any game categories are exempt or ineligible.
3. Which Payment Methods Can You Use?
A factor that often gets overlooked when claiming welcome bonuses is that not all payment methods are eligible.
So it’s essential that you read the T&Cs first before claiming. That may just save you the disappointment of registering a new customer account, opting into the bonus and then finding out that your preferred payment method is ineligible for that particular offer.
Don’t forget, if you use a payment method that is not allowed in conjunction with the bonus, you will forfeit your right to it!
As a general rule of thumb, debit cards from Visa and Mastercard are the way to go, as these are never usually exempt from claiming a welcome bonus.
But some other popular options, including PayPal, Skrill and Apple Pay, can be excluded from the offer, so be sure to read those T&Cs in advance.
4. Check the Wagering Requirements
Although you can find casinos bonuses without any wagering requirements, these are typically as rare as finding a sunflower in the desert.
So you will have to get to grips with the playthrough requirements of any bonus you wish to claim, which means – yes, we know we’re repeating ourselves – reading the terms and conditions before claiming.
Claiming a big bonus with considerable wagering requirements means that you will need to stake a significant sum before you are able to withdraw any winnings. For high rollers, that’s no problem… but for budget players, it has to be a major factor.
Another aspect of these wagering requirements is expiry dates. You’ll have a certain timeframe in which you can claim a bonus after registering, as well as there being an expiry on how long you have to use free spins and/or bonus funds after they have been awarded.
Although not an exact science, these wagering expiries can range from just seven days up to 30 days and beyond. So before claiming, consider these requirements and ponder whether you will be able to use your bonus within the given timeframe.
5. Evaluate Win Limits
Here’s one of those T&Cs that often gets buried in the small print somewhere near the middle: win limits.
Yes, some casinos will limit the amount that you can win from their bonuses.
Sometimes, the win limit will be high and you’re unlikely to hit it unless you land a jackpot. But in other cases, the win limit will be at a level that is of consequence to even the lowest staking players – £100, in some cases, is not unheard of.
As a guide, let’s say you claim a bonus with a win limit of £100, but you go on to win £150 using your free spins/bonus funds. Guess what happens? You will only be credited with £100 into your account.
So win limits are another consideration when considering which casino bonuses to claim.
Best Casino Sign Up Offers
32Red - Get a 150% bonus up to £150
betway - Get 125 Free Spins
10Bet - 50% Welcome Bonus up to £250 Bonus
Leo Vegas - £100 Bonus and 50 Free Spins
Casumo - 100% Bonus up to £100 + 50 Free Spins
BetVictor - Wager £10 Get £30 + 30 Free Spins
betfred - Stake £10 get up to 200 Free Spins
Bet365 - Stake £10 Get 50 Free Spins
Party Casino - 100 Free Spins
Mr Q - 75 Free Spins on Fishin' Frenzy
Bally's - Play £10 Get 90 Free Spins
betmgm - Up to £200 Bonus and 100 Free Spins
Monopoly Casino - Get 30 Free Spins
888 - Enjoy 88 Free Spins
William Hill - Deposit £10 Get £70
Ladbrokes - Bet £10 and get a £50 Welcome Bonus
Coral - Bet and get a £50 Welcome Bonus
Mansion - 100% up to £200 Welcome Bonus
MrPlay - Welcome bonus up to £200
Unibet - Deposit £10 Get £40
bwin - Up to £200 + 50 Free Spins
Sportingbet - 100 Free Spins on Starburst
Grosvenor - Deposit £20 Play with £50
TheOnlineCasino - 100% Bonus up to £100 + 100 Free Spins
ThePools - Deposit £10 Get 100 Free Spins
Casino Planet - 100% up to £100 & 200 Free Spins
Kassu - 100% up to £100 & 300 Free Spins
Griffon Casino - Up to 200 Bonus Spins
Paddy Power - Deposit £10 Geet £40 Bonus
Betfair - 100% Match up to £100
Pokerstars Casino - Spend £10 Get £50 Free Spins
Sky Casino - Spend £10 Get £60 bonus
Vegas Hero - 100% up to £100 & 50 Free Spins
Sky Vegas - 50 Free Spins + Spend £10 get 200 spins
Paddy Power - Bet £10 Get £50 + 100 free spins
777 Casino - 200% up to £400 Welcome Bonus
Mr Green - £100 Bonus Cash & 200 Free Spins
Queen Vegas - 100% Bonus up to £200 + 100 free spins
PartyCasino - 50 Free Spins on Starburst
Novibet - 100% up to £150 + 65 Free Spins
Casiplay - Up to £100 + 150 Extra Spins
Slots Magic - 100% up to £50 + 50 Free Spins
FAQs
Online casinos offer bonuses to new and existing players. These can include deposit bonuses, free spins or a combination of the two.
A casino bonus can generally be unlocked by registering an account (using a promo code, where applicable) and making a deposit. The reward should then be added to your account.
After claiming a bonus, you can check your balance – i.e. how many funds or free spins – via your account dashboard.
Free spins allow players to spin the reels of a specific game with no cost. Any winnings are yours to keep, although there may be wagering requirements to play through before you can withdraw them.
Wagering requirements are a term that must be satisfied before you can withdraw any winnings. For example, if the wagering requirements are 10x on a £10 bonus, you must stake £100 before you can withdraw your profit.
Some casinos will place a win limit on a bonus. This is the maximum amount you are allowed to win, so if you land a £100 win on a free spin but the limit is £75, you will only receive £75.
