Online slots UK

Seven of Britain's most played slots, each reviewed spin by spin with figures checked against two sources.

Ryan JessopBy Ryan Jessop. Last checked .

Key takeaways

  • Seven slots, five developers.
  • RTP from 95.39% to 96.71%.
  • Five high volatility, one low, one between.
  • Every review costs out 100 spins.

The slots

Big Bass BonanzaPragmatic PlayRTP 96.71%Volatility HighMax win 2,100xStarburstNetEntRTP 96.09%Volatility LowMax win 500xSweet BonanzaPragmatic PlayRTP Varies by versionVolatility HighMax win 21,100xGates of OlympusPragmatic PlayRTP 96.50%Volatility HighMax win 5,000xBook of DeadPlay'n GORTP 96.21%Volatility HighMax win 5,000xFishin' FrenzyBlueprint Gaming (Reel Time Gaming)RTP 96.12%Volatility Medium to highMax win 5,000xFluffy FavouritesEyeconRTP 95.39%Volatility HighMax win 5,000x

Compared

SlotDeveloperDefault RTPVolatilityLayoutWays to winMax win
Big Bass BonanzaPragmatic Play96.71%High5 reels, 3 rows10 paylines2,100x
StarburstNetEnt96.09%Low5 reels, 3 rows10 paylines, paying both ways500x
Sweet BonanzaPragmatic PlayVaries by version (96.48% to 96.51% quoted)High6 reels, 5 rowsPays anywhere (8 or more matching symbols)21,100x
Gates of OlympusPragmatic Play96.50%High6 reels, 5 rowsPays anywhere (8 or more matching symbols)5,000x
Book of DeadPlay'n GO96.21%High5 reels, 3 rows10 paylines5,000x
Fishin' FrenzyBlueprint Gaming (Reel Time Gaming)96.12%Medium to high5 reels, 3 rows10 paylines5,000x
Fluffy FavouritesEyecon95.39%High5 reels, 3 rows25 paylines5,000x

By type

High RTP slotsRanked by return.High volatility slotsBig swings.Fishing slotsBig Bass against Fishin' Frenzy.Pays anywhere slotsTumbles and scatter pays.Pragmatic Play slotsThree compared.Compare slotsAny two, side by side.

More lists

Highest max win slots UKHighest max win slots in the UK.Low volatility slots UKLow volatility slots in the UK.Best slots for beginners UKBest slots for beginners in the UK.Payline slots UKPayline slots in the UK.Slots with free spins UKSlots with free spins features in the UK.

Slot against slot

Big Bass Bonanza vs Fishin' FrenzyRTP, volatility and max win compared.Gates of Olympus vs Sweet BonanzaRTP, volatility and max win compared.Starburst vs Book of DeadRTP, volatility and max win compared.Big Bass Bonanza vs Gates of OlympusRTP, volatility and max win compared.Starburst vs Big Bass BonanzaRTP, volatility and max win compared.Book of Dead vs Fishin' FrenzyRTP, volatility and max win compared.

How to read a review

Each opens with a facts table and three meters: RTP against a 96% benchmark, volatility, and maximum win. Then what a spin does, how the free spins feature works, and what 100 spins cost at four stakes. The RTP and volatility guides explain the two numbers that matter most.

Where to play

Slot sites compares five licensed casinos.

Ad 18+ only. We may earn commission from these links. Advertiser disclosure

Coral Casino logo

Coral Casino 4.3 out of 5

Bet £10 on slots, get 100 free spins

No wageringFree spins

Claim at Coral (advert, opens in a new tab)18+. New customers. T&Cs apply.
Wagering
None
Minimum
£10
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.

Ladbrokes Casino logo

Ladbrokes Casino 4.2 out of 5

Play £10 on slots, get up to 500 free spins

No wageringFree spins

Claim at Ladbrokes (advert, opens in a new tab)18+. New customers. T&Cs apply.
Wagering
None
Minimum
£10
Time limit
Claim daily for 10 days; each batch valid 7 days
Worked value
Up to 500 spins at £0.10 (up to £50 in spins)

Significant terms: 18+. New customers only, from 14/11/25 until further notice. Certain deposit methods excluded. Deposit and spend £10+ on slots for 50 free spins a day during the first 10 days after first deposit and registration (max 500, £0.10 each, selected games, claim before 23:59 each day, valid 7 days). No wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits do not qualify. Restrictions and T&Cs apply. BeGambleAware.org

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

PlayOJO logo

PlayOJO 4.2 out of 5

80 free spins, no wagering

No wageringFree spins

Claim at PlayOJO (advert, opens in a new tab)18+. New customers. T&Cs apply.
Wagering
None
Minimum
£10
Time limit
See offer terms
Worked value
80 spins at £0.10 (£8 in spins)

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

50% bonus up to £100

10x wageringMatched deposit

Claim at Casumo (advert, opens in a new tab)18+. New customers. T&Cs apply.
Wagering
10x bonus
Minimum
£20
Time limit
7 days to complete wagering
Worked value
Deposit £200, get £100 bonus

Significant terms: 18+. New customers only. Opt-in required. 50% deposit bonus up to £100 on first deposit. Minimum deposit £20. 10x wagering on the bonus amount. Maximum bet or spin £5. Bonus valid for 7 days. Game, play and payment method restrictions apply. Full T&Cs apply. BeGambleAware.org

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

10bet Casino logo

10bet Casino 3.8 out of 5

100% bonus up to £25

10x wageringMatched deposit

Claim at 10bet (advert, opens in a new tab)18+. New customers. T&Cs apply.
Wagering
10x bonus
Minimum
£10 (check at sign-up)
Time limit
3 days to complete wagering
Worked value
Deposit £25, play with £50

Significant terms: 18+. New UK customers only. Select the casino welcome bonus at sign-up and make your first deposit within 7 days. 100% bonus up to £25. Wager the bonus 10x on slots within 3 days. Maximum bonus winnings £1,000. Bonus is not redeemable. Full T&Cs apply. BeGambleAware.org

Read the 10bet review Licence: Blue Star Planet Limited, UKGC account 43173. Offer checked 5 October 2026.

Slot figures are developers' published defaults, each confirmed against two sources; your casino may run a lower RTP. Offer terms dated 5 October 2026. How we check. 18+. Free help: 0808 8020 133 or safer gambling.

Frequently asked questions

How many slots are reviewed?

Seven.

Where do the figures come from?

Developers' defaults, confirmed against two sources.

Which is best for beginners?

Starburst.

Which has the highest RTP?

Big Bass Bonanza.

High RTP slots UKHigh RTP slots in the UK.Compare slotsCompare any two online slots side by side.Slot sites UKSlot sites in the UK.

18+ only. Please gamble responsibly.

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