Online Casino Bonuses

Sign Up Bonus

Free Welcome Bonus

Boss the slots with a £10 free bonus when you register at Slot Boss. There's no deposit required - just sign up and head to your 'My Promotions' page to claim and you'll be ready to start spinning your favourite slots completely free.

Full T&Cs apply. No deposit required, new players only. £10 paid as bonus. Claim within 3 days of registration. 7 day expiry. 50x wagering. £50 max win/withdrawal from bonus. Only bonus stakes qualify & wagering contributions vary, not all games eligible. 18+

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First Deposit Bonus

Unlock Up To £100 Plus 10 Wager-Free Spins

Unlock two cash rewards across two deposits at Slot Boss you'll unlock up to £100 cash plus 10 wager-free spins. Deposit within your first 7 days. To claim just opt-in via my promotions.

Full T&Cs apply. New players only across two deposits. Cash rewards 7 days from registration to opt-in from “My Promotions” page & each with 7 days wagering. Deposit £10, £25 or £50 & wager 35x. Only cash stakes qualify & wagering contributions vary. 5 free spins worth £0.10 to be claimed within Book of Dead with each qualifying deposit, 3 day expiry.

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Current Player Promotions

No wagering requirements

Wager-free spins

At Slot Boss we guarantee that all the free spins we give away carry no wagering requirements. That means all winnings are yours to keep.


** Any bonus issued is valid for a period of 30 days from the date of issue unless otherwise stated in the specific promotion. Any remaining/unused bonus at the end of the stated period will be removed from the player’s account. See terms and conditions for full promotional terms. **

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A Guide to casino bonuses

Guide To Online Casino Bonuses

Still want to learn more regarding the casino bonuses available to players at Slot Boss? Check out our guide to casino bonuses blog for more information.