Best payout slots UK

Of seven popular slots, Big Bass Bonanza has the highest published default RTP at 96.71%, ahead of Gates of Olympus at 96.50%.

Ryan JessopBy Ryan Jessop. Last checked .

Key takeaways

  • Of seven popular slots, Big Bass Bonanza has the highest published default RTP at 96.71%, ahead of Gates of Olympus at 96.50%.
  • Seven slots by RTP.
  • Payout and volatility.
  • Where the top slot is.

VerdictOf seven popular slots, Big Bass Bonanza has the highest published default RTP at 96.71%, ahead of Gates of Olympus at 96.50%. The version at your casino can be lower.

Seven slots by RTP

SlotDeveloperRTPVolatilityTop prize
Big Bass BonanzaPragmatic Play96.71%High2,100x
Gates of OlympusPragmatic Play96.50%High5,000x
Book of DeadPlay'n GO96.21%High5,000x
Fishin' FrenzyBlueprint Gaming96.12%Medium to high5,000x
StarburstNetEnt96.09%Low500x
Fluffy FavouritesEyecon95.39%High5,000x
Sweet BonanzaPragmatic PlayVaries by version (96.48% to 96.51% quoted)High21,100x

Payout and volatility

RTP is how much comes back over time; volatility is how unevenly. Big Bass Bonanza returns the most of the seven and is highly volatile, so a session can still be short. Starburst returns slightly less and pays small wins constantly.

Where the top slot is

PlayOJO's 80 welcome spins play on Big Bass Bonanza.

Casinos

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PlayOJO logo

PlayOJO 4.2 out of 5

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Significant terms: 18+. First deposit only. Minimum deposit £10. 80 free spins on Big Bass Bonanza, £0.10 each. No wagering requirements; winnings paid in cash. Cannot be used with any other offer. Only available to players who arrive through the designated offer link. Full T&Cs apply. BeGambleAware.org

Read the PlayOJO review Licence: Skill On Net Limited, UKGC account 39326. Offer checked 5 October 2026.

Casumo logo

Casumo 4.2 out of 5

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Read the Casumo review Licence: Recro Limited, UKGC account 61549. Offer checked 5 October 2026.

Coral Casino logo

Coral Casino 4.3 out of 5

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Wagering
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Time limit
48 hours to accept, then 7 days
Worked value
100 spins at £0.10 (£10 in spins)

Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. BeGambleAware.org

Read the Coral review Licence: LC International Limited, UKGC account 54743. Offer checked 5 October 2026.

Keep reading: Best online casino for fast withdrawals, Ladbrokes Casino review, Best online casino for a £10 deposit and PlayOJO vs Casumo.

More: Debit card casinos UK and Deposit £5 get 100 free spins.

By provider: NetEnt, Pragmatic Play, Play'n GO.

Scores are desk-based: they draw on each casino's published terms, the public register and recent independent reviews, not on real-money accounts. Where scores tie we say so and name the tie-break. Offer terms dated 5 October 2026. How we score. 18+. Free help: 0808 8020 133 or safer gambling.

Frequently asked questions

Which online slots have the best payout in the UK?

Of seven popular slots, Big Bass Bonanza has the highest published default RTP at 96.71%, ahead of Gates of Olympus at 96.50%.

Are these casinos licensed?

Yes, all five, by the Gambling Commission.

How are they scored?

Five categories out of ten, desk-based.

Can I set my own ranking?

Yes, with the ranking tool.

Best online casino for slotsBest online casino for slots in the UK.Best payout casinos UKNo casino has a single payout rate.RTP and house edgeReturn to player and house edge explained.

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