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The RTP listed for a slot does not always match the version running in the casino. That’s why our Gamblizard team reviewed more than 700 William Hill slots. While branded exclusives are uncommon, its slot library stands out for its depth. In this guide, we’ve ranked the William Hill highest RTP slots and explained how to verify each RTP before you play.
We built this shortlist of William Hill best slots around objective measures: RTP, volatility, minimum bet, bonus eligibility and live availability in Great Britain.
| Slot | RTP | Volatility | Provider | Details | Play |
|---|---|---|---|---|---|
| 98% | Low | NetEnt | Features: Autoplay, Bonus spins, Pick and click, Retrigger feature, Scatter symbols, Wild symbol Theme: Horror, Vampire |
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| 97.06% | Medium | Playtech | Features: Bonus spins, Multiplier wilds, Scatter symbols, Wild symbol Theme: Halloween, Magic |
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| 97.04% | Medium | NetEnt | Features: Autoplay, Bonus spins, Retrigger feature, Wild symbol Theme: Retro |
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Raptor 2
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97% | High | Yggdrasil Gaming | Features: Bonus buy Theme: Dinosaur, Jungle |
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| 97% | Medium | NetEnt | Features: Autoplay, Bonus spins, Wild symbol Theme: Arcade, Candy, Fruit |
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| 96.75% | Medium | Crazy Tooth Studio | Features: Pick and click |
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| 96.71% | High | Pragmatic Play | Features: Bonus spins, Retrigger feature, Scatter symbols, Wild symbol Theme: Fishing, Ocean, Wild west |
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| 96.71% | Medium | Pragmatic Play | Features: Autoplay, Bonus spins, Multiplier wilds, Retrigger feature, Scatter symbols, Wild symbol Theme: Fishing, Ocean |
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| 96.58% | High | Play'n GO | Features: Autoplay, Bonus spins, Expanding wilds, Retrigger feature, Scatter symbols, Wild symbol Theme: Egypt |
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| 96.57% | High | Blueprint Gaming | Features: Bonus spins, Mystery symbols, Pick and click, Scatter symbols, Wild symbol Theme: Deal or no deal |
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| 96.53% | Medium | Pragmatic Play | Features: Fixed jackpot, Scatter symbols, Wild symbol, Bonus spins, Retrigger feature, Pick and click, Autoplay, Turbo mode Theme: Western, Wild west, Horse |
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| 96.51% | High | Pragmatic Play | Features: Autoplay, Bonus spins, Multiplier wilds, Scatter symbols, Sticky wilds, Wild symbol Theme: Animal |
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| 96.51% | High | Play'n GO | Features: Autoplay, Wild symbol Theme: Alien, Cartoon, Space |
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| 96.5% | Medium | Pragmatic Play | Features: Scatter symbols, Wild symbol, Bonus spins, Autoplay Theme: Egypt, Scarab, Gold |
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| 96.5% | High | Blueprint Gaming | Features: Bonus spins, Scatter symbols, Wild symbol Theme: Animal |
RTP is another key factor. It is a theoretical figure, calculated across a vast number of spins, and it reflects a slot’s expected long-run return rather than the result of a single play session.
I verified that every game in this list is currently available in the William Hill slots lobby. However, RTP values are published by the game providers, so always confirm the percentage shown in the game’s information screen before playing any of the highest RTP games for real money.
Jordan Conroy Editor
For the best William Hill slots we started by comparing each game’s real-time RTP. The William Hill highest RTP slots appear at the top because RTP provides the clearest indication of a game’s theoretical long-term return.
We used volatility to break ties between games with the same RTP. We also looked at the minimum bet, since lower stakes are especially useful if you’re planning to enter a slot tournament.
In our William Hill slots review, a high payout percentage means little if the minimum bet doesn’t fit your budget. Even one of the best slots to play on William Hill may not be the right choice if every spin costs more than you’re comfortable spending. That’s why we also compare minimum bets and payline structures, whether fixed or adjustable, along with the actual cost of each spin.
Most of the games on our list have fixed paylines or skip them altogether, so not all of them qualify as true 1p slots. If you’re playing on a tight budget, check the minimum stake before placing your bet.
| Slot | Min Bet | RTP | Provider | Details | Play |
|---|---|---|---|---|---|
| £0.01 | 95.45% | Playtech | Features: Bonus spins, Scatter symbols, Wild symbol, Sticky wilds, Mystery symbols, Pick and click, Autoplay Theme: Cartoon |
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| £0.01 | 95.02% | Playtech | Features: Progressive jackpot, Bonus spins, Scatter symbols, Wild symbol, Multiplier wilds, Retrigger feature, Autoplay Theme: Ocean, Animal |
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| £0.01 | 95% | Barcrest | Features: Autoplay, Pick and click, Wild symbol Theme: Gold, Irish |
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| £0.01 | 90.05% | Playtech | Features: Bonus spins, Scatter symbols, Wild symbol, Retrigger feature, Autoplay Theme: Animal |
Minimum bets vary depending on the slots game, provider and payline setting, so we always advise reviewing the live betting panel before placing a stake.
Here’s why a 1p slot can end up costing more than 1p per spin. Coin value and bet per spin aren’t the same thing. Coin value is what you set per line, but the total bet multiplies that by the number of active lines.
Some slots run on fixed paylines, so you cannot switch any off. Starburst is a good example with ten fixed lines: the minimum coin is 1p, but every spin has to cover all ten, which makes the cheapest spin 10p, never 1p.
Adjustable-payline games work the other way round. You choose how many lines are live, so a single line at 1p makes the spin cost 1p, which is where the “penny slots” label comes from.
RTP is only one factor to consider. William Hill slots promotion offers can also affect the overall value, which is why we cover them in the next section.
Some of the games featured in this guide are eligible for the William Hill slots bonus currently listed on Gamblizard. Big Bass Splash, for example, is included in the current William Hill sign up offer.
Slot bonus terms are subject to change. Before claiming an offer, read the current terms and conditions on the William Hill slots online promotions page. Check whether a promo code is required and review the list of excluded William Hill slots games.
Many UK providers release several RTP versions of the same gambling machine. The one running on William Hill casino slots may not match the default figure listed elsewhere.
Open the William Hill slots online lobby and select the game you want.
Open the Help / Info / Paytable section for that game. If the info button is not working, refresh the page or try a different browser.
Check the RTP, volatility, minimum stakes, and payline type – fixed or adjustable.
Check whether the selected game is excluded from the current promotion.
William Hill’s 2026 UK RTP range sits mostly at 94–97%, keeping it in step with the wider market rather than above it. Bet365 and Ladbrokes offer a similar spread. Book of Dead, Big Bass Splash and Goblin’s Cave stand out with RTPs of 98%, placing them among the highest RTP William Hill slots currently available. However, the most heavily promoted games aren’t always the ones with the best RTP. If long-term return is your priority, it’s worth looking beyond the homepage. Many of the best slots to play on William Hill are found in that smaller group of high-RTP titles.
18+. T&Cs apply. Gamble responsibly. Never gamble with money you cannot afford to lose.
Jordan Conroy 
