Best Online Slots: Top 20 Slot Sites and Bonuses in the UK

1. Ladbrokes

Ladbrokes impressed us with over 4,000 slots from top providers, including NetEnt, Pragmatic Play and Microgaming. The welcome offer is straightforward – spend £10 and get 100 free spins. During our testing, we spent plenty of time on their 140+ jackpot slots, including the always-popular Mega Moolah and Divine Fortune. All the slots we tried worked smoothly on our mobiles, which is handy for playing on the go. When we cashed out via e-wallet, funds arrived within hours. Their live chat support deserves a mention too – every time we had a question, responses came back quickly.

• 4,000+ slot games available
• 140+ progressive jackpot slots
• Higher wagering requirements

2. Duelz

Our experience at Duelz kicked off with 140 free spins from a £25 deposit, which gave us plenty to play with. The site has 3,000+ slots, including hundreds of Megaways games. What really sets Duelz apart is their PvP duel system – you compete against other real players on popular slots like Starburst and Book of Dead. Each ‘duel’ unlocks chests containing cash prizes. As you climb the leaderboard and move into higher leagues, the rewards get better. Games loaded quickly, whether we were on mobile or desktop, and our e-wallet withdrawal came through within 24 hours. The interface is clean and easy to get around.

• Unique PvP slot duel system
• Good selection of Megaways slots
• Higher wagering requirements

3. NY Spins

NY Spins gives new players up to 140 free spins from a £25 deposit, which we thought was decent value. During testing, we worked through over 1,500 slots from Microgaming, NetEnt and Evolution Gaming. One thing we really appreciated was how well they’ve organised everything – finding specific games was much easier than on some cluttered sites. The VIP programme gave us bonuses as we kept playing, which is always a nice touch. Our withdrawals took just a few hours to complete. The site ran smoothly whether we tested on mobile or desktop.

• Slots organised by category
• VIP programme with bonuses
• Limited customer support hours

4. Coral

Coral’s welcome offer is hard to beat – 100 free spins for just a £10 spend. During our review, we explored their 500+ slots and had a go on several of their 130+ progressive jackpot games, including Mega Fortune and Hall of Gods. Everything was easy to find thanks to filters for type, provider and features. Our PayPal withdrawal landed in under two hours, much faster than other sites we reviewed. They run regular free spin promotions too, so there’s always something on offer beyond the welcome bonus. The mobile site gave us the full slot library without any compromises.

• 100 free spins on £10 spend
• 130+ progressive jackpot slots
• No 24/7 live chat

5. 247Bet

247Bet has slots from top providers like Pragmatic Play, Betsoft and Red Tiger Gaming. The welcome package came with clear, no-nonsense terms that are easy to qualify for. What really stood out was how fast they process withdrawals – our request was back in our account within an hour. The mobile site worked perfectly without us having to download anything extra. We tried everything from video slots to classic titles and progressive jackpots. The only downside is that the game library isn’t as massive as some of the bigger names.

• Fast withdrawal processing
• Simple navigation
• Smaller slot library

6. Grosvenor

Grosvenor sorted us out with bonus funds on our first deposit. We really liked how clearly the RTP percentages were displayed on each slot. The loyalty programme is a bit different too, giving us perks we could actually use at their physical casinos. Payment processing was solid with plenty of withdrawal options.

• 2,000+ slots from top providers
• Loyalty programme rewards
• Lower limits for new players

7. YetiCasino

YetiCasino does things a bit differently with their two-phase bonus – we got 23 free spins just for signing up, then another 77 cash spins after depositing and wagering £10, all for Big Bass Bonanza. We noticed they are constantly adding new slots each week, which keeps things fresh. Being able to filter slots by provider, features and volatility made finding what we wanted much quicker. Games loaded fast, whether we were on mobile or desktop. They’ve got loads of payment options, though if you’re a Skrill user, you won’t be able to grab the welcome bonus.

• Two-phase welcome bonus
• New slots added weekly
• Skrill excluded from bonus

8. Grand Ivy

Grand Ivy’s welcome offer includes wager-free spins, which is a proper rarity. Just like our other recommendations, they have a huge games library from top providers. Our e-wallet withdrawal was sorted within 24 hours, no messing about. PayPal worked perfectly for both putting money in and taking it out. The slot selection is smaller than some of the big players, but everything they’ve got is quality – high RTP games and popular jackpot slots that people actually want to play.

• Wager-free welcome spins
• 24-hour e-wallet withdrawals
• No mobile app

9. Casimba

Casimba’s welcome package gives players free spins and a deposit match bonus to get started. They have a massive library of 2,500+ slots. We tried classic games, video slots and progressive jackpots, all of which worked perfectly on mobile. Customer support came through live chat and email when we needed them, though there’s no phone line if that’s your preferred method.

• 2,500+ slot games
• Regular slot tournaments
• No phone support

10. Betfred

Betfred welcomed us with a generous 200 free spins, which is one of the bigger offers out there. During our review, we noticed they have a good mix of low, medium and high-volatility games; most ran smoothly on mobile without any issues. Withdrawals came through quickly using the standard payment methods. The only slight annoyance was that the welcome bonus expires just one week after new players qualify for it.

• 200 free spins welcome offer
• Works well on mobile
• Short bonus expiry terms

Jackpot Slots

We found Coral is best for jackpot slots, with games like Mega Moolah and Divine Fortune offering potentially massive returns. Grosvenor is another strong option with exclusive progressive jackpot slots.

Video Slots

Ladbrokes is great for video slots with over 500 titles from top providers like NetEnt and Pragmatic Play. Coral offers a similar range with popular games like Starburst and Gonzo’s Quest readily available.

Megaways Slots

Ladbrokes is the best choice if you’re looking for Megaways slots with titles from Big Time Gaming, including Bonanza and Extra Chilli. Duelz also offers a strong Megaways collection featuring popular games like Gonzo’s Quest Megaways and Wolf Legend Megaways.

Classic Slots

We found Grosvenor is best for classic slots, including traditional fruit machines and 3-reel games. Ladbrokes also offers a solid collection of retro-style slots for players who prefer simpler gameplay.

High Volatility

Duelz was our choice for slots with high volatility; they have a lot of games offering bigger wins but less frequent payouts if that’s what you prefer. NY Spins is another excellent choice with titles like Dead or Alive 2 and Razor Shark.

Low Volatility

We recommend 247Bet for low volatility slots like Starburst that pay smaller wins more frequently, ideal for extended gameplay. Coral also features steady-paying games perfect for players with smaller bankrolls.

RTP

Ladbrokes offers hundreds of slots with RTPs above 96%, ensuring better long-term value for players. Duelz is another top pick with transparent RTP percentages displayed on each game.

Fast Withdrawals

Grand Ivy consistently processed our withdrawals in under an hour when we used e-wallets, making it our top choice for quick payouts. Alternatively, Ladbrokes offers instant withdrawals with Visa Fast Funds technology.

Debit & Prepaid Cards

Debit cards are the most popular payment method at slot sites due to their universal acceptance and instant deposits. Visa and Mastercard work at nearly all the slot sites we review and qualify for welcome bonuses without restrictions. Prepaid options like sites that accept PaysafeCard offer additional spending control and privacy since you don’t share bank details, making them ideal for players who prefer budget limits or extra security.

E-wallets

E-wallet payments are available at all of our recommended sites due to their speed and security. Gambling sites that accept PayPal offer instant deposits and withdrawals that typically process within hours, making them ideal for slot players who value quick access to their winnings. We found that Skrill and Apple Pay provide similar fast processing times, though Skrill is often excluded from welcome bonus offers.

Pay by Phone

Pay by Phone lets you deposit at certain slot sites, like Duelz, directly through your mobile bill, offering instant transactions without entering card details. This method works with major UK networks including Vodafone, Three, O2 and EE. Sites that accept phone bill payments provide extra security since you don’t share financial information, though deposits are capped at £30 per day. Withdrawals aren’t available through this method.