Slots are one of the most popular online casino game types, favoured for their simplicity and diversity.

At City AM, we have carefully handpicked the best online slot sites across the UK for our valued readers to enjoy. 

Our top online slot brands showcase many of the industry’s leading slots alongside huge customer bonuses, top-notch software and an exemplary gaming experience. Keep reading to uncover more about the best slot titles and how to sign up.  

City AM’s journalism is supported by our readers. If you click links to other sites on this page, we will earn a commission. 

Our Recommended Top 10 Slot Sites

888 Casino – 50 Free Spins No Deposit

UK new customers only; re-registrations excluded. Claim Free Spins [FS] (£0.10 each) within 48h; valid 3 days on selected games (excl. JP). FS wins converted to Bonus and must be wagered 10x within 90 days to withdraw. Max withdrawal £100. One per person. T&Cs apply.

bet365 Games –  10 DAYS OF FREE SPINS

This offer is available to new and fully verified customers only. Eligible customers must have a minimum of £10 in lifetime deposits. T&Cs apply. Registration Required.

William Hill Vegas – Stake £10 and Get 50 Free Spins

18+. Play Safe. New customers using Promo code M50 only. Opt in required. 1x per customer. Mining Pots of Gold™ only. Min £10 stake. Max 50 Free Spins at 10p per spin. Free Spins expire 24 hours from issue. Max redeemable £30. Eligibility rules, game, location, currency, payment-method restrictions and terms and conditions apply. #ad. GambleAware.org

Pub Casino – 100% up to £100 Welcome Bonus 

Welcome bonus for new players only | Maximum bonus is 100% up to £100 | Min. deposit is £10 | No max cash out | Wagering is 40x bonus | Maximum bet with an active bonus is £5

Eligibility is restricted for suspected abuse |  Skrill & Neteller deposits excluded for welcome bonus | Cashback when offered, applies to deposits where no bonus is included | Cashback is cash with no restrictions |

Jackpot City UK – £100 Bonus and 100 Free Spins

New UK customers only. To qualify, you must stake £20 on a game on our ‘Jackpots’ tab. Spin value – 10p. No wagering requirements on free spin winnings. Debit Card deposit online (exclusions apply). This offer is valid 7 days from the new account being registered. 18+ BeGambleAware.org.  

talkSPORTBET – £40 in Casino Bonuses & 40 Free Spins

18+ New Customers Only. Opt in and wager £10+ on selected slot games in 7 days. Get 40 Free Spins on Big Bass Day at the Races and £40 in Slot Bonuses for set games, 30 days expiry, 40x wagering, max redeem £1,000. T&Cs Apply. GambleAware.org. Please gamble responsibly.

NetBet – Get 100 Free Spins When You Bet £10

New customers only. £10 min deposit. Opt-in and Bet £10+ on any slot, 100 Free Spins on Big Bass Splash, £0.10 per spin. Winnings paid as cash, £100 Max win. Additional T&Cs apply.

Space Wins – 500 Free Spins on Starburst

New players only, £10 min fund, max bonus conversion to real funds equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply here.

Lights Camera Bingo – 500 Free Spins on Fluffy Favourites

New players only, £10 min fund, max bonus conversion to real funds equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply here.

Immortal Wins – 500 Free Spins on Immortal Romance

18+, New players only, £10 min fund, max bonus conversion to real funds equal to lifetime deposits (up to £250), 65x wagering requirements. FREE SPINS CAN BE WON ON THE FOLLOWING GAME: IMMORTAL ROMANCE. FULL T&CS APPLY HERE.

Cash Arcade – 50 Free Spins on Big Bass Bonanza

Cash Arcade – New players only, £10 min fund, max bonus conversion equal to lifetime deposits (up to £250) to real funds, 65x wagering requirements and full T&Cs apply.

Aladdin Slots – 50 Free Spins on Big Bass Bonanza

New players only, £10 min fund, max bonus conversion equal to lifetime deposits (up to £250) to real funds, 65x wagering requirements and full T&Cs apply.

18+ Gambling Can Be Addictive. Please Play Responsibly. Registration Required. GambleAware GamStop Gambling Commission

Our Top Picks for the Best Online Slot Sites for UK Players

If you are looking for a top online slots site, then look no further. Our team has carefully picked our favourite online slots from the UK online casino industry, all equipped with incredible site features. Find out more below.   

Slot fans are in for a treat at Space Wins Casino, as the site provides over 500 game titles, with top slots taking up the majority. Several varieties of slot games can be enjoyed at Space Wins Casino, including modern five-reel slots, three-reel games, video slots and lucrative jackpot slots.

In addition, our experts discovered other popular casino game variations at Space Wins, including roulette, blackjack, and live dealer options. Thanks to its interactivity and HD streaming, we particularly favoured the live casino section. 

Players will be pleased to hear that the average RTP for Space Wins is around 97-98%, which our experts have determined based on the games available. Rewards are plentiful at Space Wins, with the brand providing several potential prize opportunities for new and existing players through exciting casino bonuses. 

The current welcome offer is up to 500 free spins on the Starburst slot, which is an excellent way for players to potentially earn prizes without risking their funds. Overall, we highly recommend Space Wins to online casino users looking for superb slot opportunities. 

Brand new in the online casino scene is the incredible Bally Casino. Despite its establishment only last year, the site has gained great traction amongst casino users thanks to its superb site features. There is no better feeling than being potentially rewarded while enjoying a top online slots site. 

Fortunately, Bally Casino provides several promotions for both new and existing customers to claim. Notably, the current welcome offer for new players is the lucrative play £10 and get 30 free spins bonus. Users can enjoy these free spins on the incredible Secrets of the Phoenix Megaways slot. 

While Bally Casino’s slot selection is more than satisfactory, the tabletop games lacked diversity, with blackjack, baccarat, and roulette the only options. Aside from this, users who prefer to play on the go are in luck, as Bally Casino UK provides an exceptional mobile experience on iOS and Android devices. Players can choose between a well-functioning mobile site and a dedicated app.    

As slot enthusiasts enter the Monopoly Casino site, they are greeted with an easy-to-navigate interface with vibrant colours that create a pleasant gaming atmosphere. A standout feature to our experts about the Monopoly Casino site is certainly the incredible games library bursting with varieties such as top slots, table games and live dealer titles.

Players will find popular and niche slots from industry-lead software developers, ensuring high-quality graphics and fast loading speeds. Our top slot picks at Monopoly Casino include Monopoly on the Money Deluxe, Bouncy Bubbles and Monopoly Gameshow Jackpots. 

Our team noticed a downside of the site: the lack of variety in payment methods. We would like to see additional banking options to ensure all player payment preferences are satisfied. Create your account with Monopoly Casino today to enjoy the brand’s incredible features and the huge welcome offer for new customers.

Last but certainly not least, Aladdin Slots is another strong contender within the online slots site scene, jam-packed with exciting features like a vast slot selection, generous customer promotions and top software. 

Regarding promotions, new players who create an account with Aladdin Slots can claim 50 free spins on Big Bass Bonanza! Existing customers do not have to miss out, thanks to the variety of ongoing bonuses at Aladdin Slots. These include the rewards reel, cash giveaways and regular happy hours.

We were thoroughly impressed with the safety and security features at Aladdin Slots, including valid licensing and certification from the reliable UK Gambling Commission. Additionally, players can rely on the site’s excellent, responsible gambling features, such as deposit limits and self-exclusion.