Online Casino Bonuses

Card Reg Bonus

Free Welcome Bonus

Boss the slots with £10 free when you register. We'll credit you with your free funds once your card is added to the account - there's no deposit required, you'll just be ready to start spinning your favourite slots completely free.

T&C's Apply. New players only. Opt in required. 99x wagering requirement. Maximum single stake with a bonus is £5. £50 max win and withdrawal for non-depositors. 7 day expiry. Only bonus stakes contribute towards wagering requirements. Not all games contribute towards wagering. 18+ Begambleaware.org

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First Deposit Bonus

100% First Deposit Offer

There's up to £200 in cash up for grabs when you make your first deposit at Slot Boss. Just make your first single deposit of £20, £50, £100 or £200 and wager 30x for a matched cash reward.

T&Cs apply. New players only. Deposit £20, £50, £100 or £200 as a single first deposit and wager 30x for a matched cash reward. 7 day expiry. Only cash stakes on slots will qualify. 18+ Begambleaware.org

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Current Player Promotions

Stake and Get

Stake and Get

Earn 10 free spins this week on two top slots when you stake £20 on the same games. Opt in via the My Promotions page before you stake and you will be credited with 10 free spins worth 20p each instantly!

T&Cs Apply. Promotion will run from 16:00 Monday 17th February until 23:59 Thursday 20th February 2020. Must opt in and stake £20 cash on Cleopatra or Da Vinci Diamonds to qualify. 10 free spins will be awarded instantly upon qualification on Cleopatra or Da Vinci Diamonds. Free spins are awarded £0.20p per spin. Winnings from free spins will be paid into cash balance. 3 day expiry. 18+ BeGambleAware.org

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Stake and Earn

Slot of the Week

Earn 10 free spins on our Slot of the Week Rainbow Jackpots when you stake £20 on the same game. Opt in via the My Promotions page before you stake and you will be credited with 10 free spins instantly.

T&Cs Apply. Promotion will run from 10:00 Monday 17th February to 23:59 Sunday 23rd February 2020. Opt in required. Must stake £20 cash on Rainbow Jackpots to be credited 10 free spins on the same game. Free spins are awarded at £0.10p per spin with winnings paid as cash. 3 day expiry. 18+ BeGambleAware.org

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Stay in the Know

Keep in touch

Never want to miss another bonus again? Stay up to date on all our promotions including free spins, losses back and deposit offers by making sure you're opted in to receive marketing. Just follow the link below to select how you want to hear from us.

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.

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** 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. **