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 June 2021

Casinos Bonus Visit
Spin Rio Casino

gb ca de nz eu ie

Welcome Bonus up to £50

100 Bonus Spins

New For 2021 Trusted Company High Stakes Live Dealer Games Popular UK Slots

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Gambling License

New depositing players only. Min. deposit £10. Max. bonus varies per deposit (see below). Bonuses that require deposit, have to be wagered 35x. 18+ T&C's | BeGambleAware® #AD
Casushi Casino

gb

Welcome Bonus up to £50

50 Bonus Spins on Starburst Slot

Awesome Sushi Theme Sushi Train Game Superior VIP Club Popular UK Slots & Jackpots New Casino

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Gambling License

New customers only. Minimum first deposit of £20 required. Maximum promotion amount per player is £50 Bonus and 50 Free Spins. The welcome offer is not available on pre-paid card or e-wallet (Neteller and Skrill) deposits. Bonus and free spins will be credited automatically. 100% deposit bonus up to £50 bonus will be credited upon first deposit. 50 free spins will be received in 5 daily increments of 10 starting within 24 hours of first deposit. Free spins are only available on Starburst. Free spins value is £0.10 per spin. Bonus will expire 30 days after qualifying deposit. Free spins will expire 48 hours after being credited/ 18+ T&C's | BeGambleAware® #AD
Fruitkings Casino

gb ca eu

100% Welcome Bonus up to £50

50 Bonus Spins

Dazzletag Casino Top for Slots Huge Selection of Live Games Fair Bonuses Trusted Company

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Gambling License

18+. New players only. 100% bonus on first deposit up to £50 & 100 Bonus Spins (50 spins on day 1, 25 on day 2, 25 on day 3) for Gonzo’s Quest slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expire after 48 hours. Game restrictions apply. Further Terms Apply. 18+ T&C's | BeGambleAware® #AD
Duelz Casino

gb ca nz de ie eu

Welcome Bonus up to £300

100 Spins on Book of Dead Slot

Trusted Operator Great Welcome Bonus Interactive Casino

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Gambling License

18+ new players only. Minimum deposit: £20. Maximum £100 bonus. Max bet with an active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Max redeemable from welcome bonus: £500. 100 Free Spins are given out 20 per day on Book of Dead for 5 days in a row, log in each day is required. Max Free Spins winnings: £100. Winnings from Free Spins are credited as bonus money with a wagering requirement of 45 times. Free Spins expire after 3 days. Some games may not be played with a bonus. Games may contribute differently when wagering a bonus. 18+ T&C's | BeGambleAware® #AD
Casino Planet

gb ca nz eu

100% up to £100 Welcome Bonus

200 Bonus Spins

Genesis Global Sister Casino Site Massive Games Inventory Safe & Trusted Brand PayPal & Trustly Accepted

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware® #AD
Casino Lab Casino

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100% up to £100 Welcome Bonus

300 Bonus Spins

Owned By Genesis Global Tons of Slots Top For Live Dealer Games Safe Platform Trusted Brand

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Gambling License

18+ full T&C's apply. New players only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free spins valid for 72 hours from credit. Max free spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware® #AD
Kassu Casino

gb ca de nz eu ie

Welcome Bonus up to £100

300 Bonus Spins

Popular Sistser Casino Tons of Premium Games Must Fall & Megaways Games Great Bonuses

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware® #AD
Plaza Royal

gb eu nz ca de

Welcome Bonus up to £50

100 Bonus Spins

New Casino Trusted Company 60+ Live Games New Slots Fast Payouts

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Gambling License

New depositing players only. Min. deposit £10. Max. bonus varies per deposit (see below). Bonuses that require deposit, have to be wagered 35x. 18+ T&C's | BeGambleAware® #AD
Lucky Vegas Casino

gb ie ca de nz eu

Welcome Bonus up to £75

75 Bonus Spins on The Book of Dead Slot

Great Design Top for Slots & Live Games Trusted Company

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Gambling License

First Deposit Only. Min. deposit: £10, max. Bonus £75. Game: Book of Dead, Spin Value: £0.10. WR of 30x Deposit + Bonus amount and 60x 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. First Deposit/ Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies. 18+ T&C's | BeGambleAware® #AD
VIPs Casino

gb eu nz de ca

100% up to £50 Welcome Bonus

20 Bonus Spins on Starburst Slot + Up To Weekly 20% Cashback

Trusted Casino Sleek Design Tons of Megaways Games Cashback Available

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Gambling License

T&C apply | New players only | 18+ | Min deposit £10 | Wagering requirement 35x | Spins expire after 24hrs | Spins available on Starburst | Play responsibly 18+ T&C's | BeGambleAware® #AD
Lottomart Games

gb ca

100% up to £100 Welcome Bonus

Free Scratchcards & Casino Promos

Wager Free Bonus Top UK Slots Trusted Company Biggest Online Lotteries

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Gambling License

New customers only. All new players can get a 100% deposit match bonus on your deposit, up to £100 - Deposit at least £10 and claim up to £100 18+ | BeGambleAware® #AD
Playtoro Casino

gb ca ie de nz eu

100% up to £50 Welcome Bonus

25 Bonus Spins

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Gambling License

First Deposit Only. Min. deposit: £10, max. Bonus £50. WR of 60x Bonus 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. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. This offer is only available for specific players that have been selected by PlayToro. If you have arrived on this page not via the designated offer via PlayToro you will not be eligible for the offer. Bonus Policy applies. 18+ T&C's | BeGambleAware® #AD
Casoola Casino

gb nz ie de eu

100% up to £100 Welcome Bonus

200 Bonus Spins

Experienced Company Behind The Scenes Trusted Over 1300 Games Fast Cashouts PayPal Accepted

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware® #AD
Casino Gods

gb nz ca eu ie

100% up to £100 Bonus

300 Bonus Spins

New Slot Games Trusted Casino Company Excellent mix of Games

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on pre-selected games. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware® #AD
Mr Play Casino

gb ca eu nz

Welcome Bonus up to £200

100 Extra Spins

Amazing Slots Experienced Casino Company Fast Payouts Sports Betting Fair Bonuses

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Gambling License

Applies only to new depositing players. Min deposit £10. 18+. Wagering requirement apply 35x. Offer valid for 24hr. 100 spins includes 3 deposit. See full terms apply. 18+ T&C's | BeGambleAware® #AD
Jackpot Village

gb ie eu nz ca

Bonus 100% up to £500

50 Bonus Spins

VIP Bonuses Jackpot Games Trusted Company

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Gambling License

18+. New players only. 1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Bonus spins on selected games only- must be used within 72 hours. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 100% match up to £500 + 50 bonus spins on 1st deposit, 25% match up to £800 + 25 bonus spins on 2nd deposit, and 50% match up to £500 + 30 bonus spins on 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus, cash & bonus spins. Terms apply 18+ T&C's | BeGambleAware® #AD
Casino Joy

gb ca eu nz de

100% up to £100 Bonus

200 Bonus Spins

Massive Games Collection Safe Casino Brand Superb Theme & Feel

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Gambling License

18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 9 days on Starburst. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. 18+ T&C's | BeGambleAware® #AD
Hyper Casino

gb ca nz eu ie de

£300 Welcome Bonus

Amazing Promotions & Slots Tournaments

Newer Online Casino Wacky Power Design Great Games Catalogue

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Gambling License

"#AD New players only, min deposit £10, wagering 45x, max bet £5 with bonus funds, 100% up to £100 bonus on 1st deposit, 50% up to £200 on 2nd deposit. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Full T&C’s apply 18+ T&C's | BeGambleAware® #AD
Voodoo Dreams Casino

gb ca de eu ie nz

Welcome Bonus 100% up to £50

50 Wager Free Spins

All The Famous Slots Gamification Games Super Unique Brand

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Gambling License

18+. new players only. Maximum £50 bonus. Minimum deposit: £20. Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Bonus expires after 30 days if wagering requirement has not been met. One bonus allowed per person, address, device, IP. Full bonus terms apply 18+ T&C's | BeGambleAware® #AD
Captain Cooks Casino

eu gb ca nz ie

100% up to £475 Bonus

100 Bonus Spins on Mega Moolah

All The Famous Games Online for over 10 years Big Jackpots

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Gambling License

Welcome offer is for new customers only. The minimum first deposit required is £5, for all subsequent deposits the minimum deposit is £10. The 100 chances are credited as a £25 bonus and players can wager 100 times at £0.25 on the Mega Moolah slot machines. A two hundred times wagering requirement applies on all bonuses and certain games contribute a different percentage to the wagering requirement. 18+ T&C's | BeGambleAware® #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 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 type of 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.