Casino Bonuses: Everything You Need To Know
Casino bonuses come in many shape and sizes and almost all online casinos offer them to customers. If you have ever wondered why a casino would give you something for free, then sure, we would also wonder what the catch is too! But, the truth be told is that casinos offer bonuses for a couple of different reasons.
Why Are There Casino Bonuses?
Ultimately, online casinos are looking to attract you to their casino over any another casino which would be their competitor. Obviously, there are more things to look for when you are choosing a new casino to play at but one of them is the casino bonuses they offer and that’s what we’re going to focus on right now.
Below we list the different kinds of casino bonuses you’ll likely to encounter on your casino journey, some might be more suitable to you than others but they’re all there for the taking and up for grabs. Also, let us just add, below we also list only the top, most recommended online casinos and ones which also have a UK gambling license.
The team here at onlineslot.org.uk have tried and tested each casino that we recommend and they have passed our merit with flying colours! Seriously though, we have run checks on their banking systems, how fast we were able to withdraw, check the game choice, customer service, bonuses, reputation, parent company, negative news, and hidden information such as wagering requirements – you name it, we checked and came up with a list below of the few best casinos that made the cut. We did have a bit of fun checking them out of course!
Latest Casino Bonuses September 2026
Voodoo Dreams Casino
Bonus: Get 140 Free Spins when you deposit £25
Promotions: Low Wager Bonus
Wager Requirement: 10x
licensed by: UKGC
Minimum Deposit: £25
Voodoo Dreams Casino Terms and Conditions: 18+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly! www.begambleaware.org Full T&Cs apply. 18+ T&C's | GambleAware® #AD.
LosVegas.bet
Bonus: Get 140 Free Spins when you deposit £25
Promotions: low wager bonus
Wager Requirement: 10x
licensed by: UKGC
Minimum Deposit: £25
LosVegas.bet Terms and Conditions: 18+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly! www.begambleaware.org Full T&Cs apply. 18+ T&C's | GambleAware® #AD.
Midnite Casino
Bonus: Get 100 No Wagering Free Spins
Games Applicable: Big Bass Splash
Wager Requirement: 0x
Bonus Code: BETGETCASINO
licensed by: UKGC
Minimum Deposit: £20
Midnite Casino Terms and Conditions: New customers only. Opt in and wager £20 or more on selected games(Monopoly Megaways, Big Bass Splash, Big Bass Secrets of the Golden Lake, KKC Even Bigger Bananas, Fishing Frenzy Big Catch) within 14 days of registration. Get 100 Free Spins for selected games, valued at 10p and valid for 7 days. T&Cs apply. BeGambleAware.org 18+ T&C's | GambleAware® #AD.
NY Spins Casino
Bonus: Get 140 Free Spins when you deposit £25
Promotions: Low Wager Bonus
Wager Requirement: 10x
licensed by: UKGC
Minimum Deposit: £25
NY Spins Casino Terms and Conditions: 18+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly! www.begambleaware.org Full T&Cs apply. 18+ T&C's | GambleAware® #AD.
Megaways Casino
Bonus: 100% up to £120 Welcome Bonus
Bonus Spins: 50 Free Spins
Games Applicable: Fishing Frenzy The Big Catch
Wager Requirement: 10x
licensed by: UKGC
Minimum Deposit: £10
Megaways Casino Terms and Conditions: First Deposit Only. Min. deposit: £10, max. Bonus £120. Game: Fishing Frenzy Big Catch Megaways, Spin Value: £0.10, Max Free Spins: 50. WR of 10x Bonus amount and Free Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings and bonus amount or £5 (lowest amount applies). Free Spins must be used before deposited funds. This offer is only available for specific players that have been selected by Megaways Casino. If you have arrived on this page not via the designated offer via Megaways Casino you will not be eligible for the offer. Spins must be used and/or Bonus must be claimed before using deposited funds. Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. 18+ T&C's | GambleAware® #AD.
Duelz Casino
Bonus: Get 140 Free Spins when you deposit £25
licensed by: UKGC
Minimum Deposit: £25
Duelz Casino Terms and Conditions: 18+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly! www.begambleaware.org Full T&Cs apply. 18+ T&C's | GambleAware® #AD.
Casiku
Bonus: Get 50 Wager-Free Spins
Games Applicable: Big Bass Splash
Wager Requirement: 0x
licensed by: UKGC
Minimum Deposit: £20
Casiku Terms and Conditions: 18+. New players only. Opt-in required. Min. deposit £20. Welcome Offer is 50 wager free spins on Big Bass Splash when wagering min. £50 on slots by 23:59 GMT on day of first deposit. Free spins must be used within 72hrs. Winnings from free spins credited as cash funds and capped at £50. Cash funds are immediately withdrawable. Affordability checks apply. Terms apply. BeGambleAware.org 18+ T&C's | GambleAware® #AD.
PricedUp
Bonus: Wager £30 Get 90 Free Spins
Games Applicable: Big Bass Bonanza
Bonus Code: wager30get90
licensed by: UKGC
PricedUp Terms and Conditions: Wager £30 on Pragmatic Play slots Get 90 FS on Big Bass Bonanza Headline Terms: This promotion is for new customers only. Customers must be 18+ and residents of the UK/IE. Sign Up using the promo code ‘bet30get90’ and make a minimum deposit of £30. Wager a minimum of £30 on Pragmatic Play slots and receive 90 free spins on Big Bass Bonanza. Only customers signing up through a recognised affiliate partner will be eligible for this promotion. This promotion is available once per household / valid email address / IP address. The promotional period is 00:00 25/07/25 and is an ongoing promotion. To qualify you must make a minimum deposit of £30 and wager a minimum £30 on Pragmatic Play slots in the promotional period and within 24 hours of Sign Up. The free spins are available once and will be awarded within 1 hour, to all players who successfully met the criteria. Free spins are only available on Big Bass Bonanza. The free spins have a total value of £9. 2x wagering required before winnings are released to balance. 18+ T&C's | GambleAware® #AD.
LuckyLouis
Bonus: 100 Free Spins on 1st Deposit
Wager Requirement: 10x
licensed by: UKGC
Minimum Deposit: £10
LuckyLouis Terms and Conditions: Automatically credited upon deposit. Cancellation can be requested. First Deposit Only. Min. deposit: £10. Game: Big Bass Bonanza, Spin Value: £0.1. WR of 10x Bonus amount and Free Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings amount or £5 (lowest amount applies). Spins must be used before using deposited funds. Bonuses do not prevent withdrawing deposit balance. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. 18+ T&C's | GambleAware® #AD.
Monster Casino
Bonus: Welcome Bonus Package up to £1,000
Bonus Spins: 100 Bonus Spins
Games Applicable: Eye of Horus: Rise Of Egypt + Starburst
licensed by: UKGC
Minimum Deposit: £20
Monster Casino Terms and Conditions: New Players Only. Wager from real balance first. 10X wager the bonus money within 30 days and 10x wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: £50 the bonus amount or from free spins: £20. Min Deposit £20 required. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply. 18+ T&C's | GambleAware® #AD.
Playmillion Casino
Bonus: First Deposit bonus 100% up to £20
Bonus Spins: Use Promo Code: FIRST20
licensed by: UKGC
Minimum Deposit: £10
Playmillion Casino Terms and Conditions: First Deposit Only. Min. deposit: £10, max. Bonus £20. WR of 10x Bonus amount and Free Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the Bonus amount or £5 (lowest amount applies). Spins must be used and/or Bonus must be claimed before using deposited funds. Bonuses do not prevent withdrawing deposit balance. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. 18+ T&C's | GambleAware® #AD.
SpinYoo
Bonus: 100% up to 100 Bonus Spins
Games Applicable: Big Bass Splash
licensed by: UKGC
Minimum Deposit: £20
SpinYoo Terms and Conditions: 18+.New players only. Opt-in. Min dep £20. Welcome Offer is 1 Yoo Spin for every £1 deposited up to 100 Spins. To claim the offer, you need to wager min £20 on slots of your 1st deposit by 23:59 GMT. Spins credited in proportion to your deposit amount and valid on Big Bass Bonanza. Winnings from bonus spins credited as bonus funds and are capped at an equal number of spins credited. These bonus funds can be used on slots only. Bonus funds are separate to cash funds and subject to 10x (bonus amount) wagering requirement. Only bonus funds count towards wagering contribution. £5 max bonus bet. Bonus funds and spins must be used within 72hrs. Affordability checks apply. Terms Apply. BeGambleAware.org 18+ T&C's | GambleAware® #AD.
Genting Casino
Bonus: 100% up to £25 Welcome Bonus
Bonus Spins: + 50 Free Spins
Games Applicable: Big Bass Bonanza
licensed by: UKGC
Minimum Deposit: £10
Genting Casino Terms and Conditions: Automatically credited upon 1st Deposit (min £10). Max Bonus £25. Game: Big Bass Bonanza, Spin Value: £0.1. WR 10x Bonus (only Slots count) in 30 days. WR 10x free spin winnings (only Slots count) in 30 days. Max bet is 10% (min £0.10) of the free spin winnings and bonus or £5 (lowest applies). Bonus Policy applies. 18+ T&C's | GambleAware® #AD.
Free Spins Bonuses: Explained
Free spins or free rounds is the name given to a bonus where a casino will give you literally a number of free spins on any online video slot. Sometimes they are really free and all you’ll need to do is register an account at said casino and they will be credited in your account. Some offer free spins when you will get them as a free addition, when you make your first deposit. Either way - they are free and something you can use to try a new casino out before you play for real or perhaps try a new slot.
Usually free spins bonuses are also given to existing casino customers as well, for example when there is a new slot launched and the casino want to try them out.
Free spins are considered free but the online casino would need to cover themselves a bit from risk, so they set what’s called ‘Wagering Requirements’ on the free spins (apart from Thrills and Guts Casino who have wager free spins!). Usually a normal wagering requirement are around x35 of bonus amount, but always check the small terms and conditions before you start so you know what to expect if you win something.
Casino Deposit Match Up Bonus: Explained
A casino match up bonus is by far one of the best casino bonuses you can take and the way they work is they reward you when you put money into a casino – commonly known as making a deposit! They are usually a percentage and then a maximum currency amount, say for example: 100% up to £100.
This means that when you deposit £100, the casino will match it (up to a maximum €100) and give you another hundred in bonus money. Now, you might be asking why! Would a casino do that? Give away free money like that? But the answer is simple... They want you to be able to play for longer, make you money go farther and also bet how you want.
Some slots sometimes need a higher bet to get into bonus round, like for example, Mega fortune. Also, some slots have a high volatility rate so they may eat you bankroll for longer periods of time without a win, but when you win – you’ll win big. The casino bonus is designed to help you and cut your risk of losing your money as well, so it is a win-win situation. There is a catch of course which all casinos are only happy to disclose and tell you about.
They are giving you away real cash money but they have to protect themselves too. Imagine if everyone could win a fortune at their expense, from these casino bonuses? The way they protect themselves is by attaching wagering requirements to these bonuses. Most of them work in the way of the formula: Deposit + Bonus x 35 = which is the magic number you’ll need to wager (bet for) until any restrictions are lifted and you’ll be allowed to withdraw any of your winnings you’ve made by claiming their bonus.
It’s very popular bonus and there’s nothing else to it. Casino Bonuses are there to help you. Do always read all terms and conditions before you start, our recommended casinos only carry the best and fair terms and conditions. If you are still unsure, all casinos welcome you to contact their customer support department o ask any question you like – they’ll be able to put your mind at ease.
Free Cash Bonuses: What You Need To Know
Free casino bonuses are a bit rarer these days as most free bonuses are given in the form of free spins. However, some casinos do still offer free cash bonuses and they usually are credited when you register an account. Usually free cash bonuses have the aforementioned wagering requirements attached to them, so always read the terms and conditions before you start.
Having said that, it’s always good to view free casinos bonuses as a bit of real fun and not something to make you rich as the free bonuses are usually a smaller amount, for example €5. But, it is a good way to test a new casino for real.
You never know though, wins can happens from free spins and free bonuses. There was a winner on Mega Fortune one time in 2011, who won his fortune from a free casino bonus. Of course, he had some wagering requirements to fill, but then I don’t think it would have been a problem to fulfil them!
Reload Bonuses: Explained
It’s usual that loyal casino players regularly enjoy ‘reload’ bonuses that casinos offer from time to time. These are straight forward bonuses like the deposit bonuses but act like follow bonuses every so often.
VIP Program – Get Spoiled For Being Loyal, It's that Simple!
Lastly, almost every casino will offer a VIP program or loyalty rewards. Whatever you want to call them, the aim is to offer players extra bonuses and promotions for their loyalty.
These days, almost every player is rewarded and awarded on a scale. In our opinion, the best casinos offer this type of program, thus not to single any player out. We’re all different, aren’t we? Suffice to say, the more you play the more you get back as with any loyalty system.
High roller casino bonuses are also up for grabs so if you are a high roller, then look out and inquire about a casinos VIP program and their high roller bonuses so you get the most out of your bankroll and the best service you deserve too.