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Online Slots Reviews + Slot Sites

Welcome to Online-Slot.co.uk, the ultimate hub for slot enthusiasts. With four decades of combined experience, our experts deliver honest, in-depth reviews covering gameplay, bonuses, and payouts. Discover the UK’s best slots and top-rated sites, reviewed by players, for players

New Slots

If you want new slot reviews, Online-Slot.co.uk is the place to come to. We add the latest slot reviews as quickly as anywhere else. This includes exclusive slots and details of where to play them. We cover slot reviews from the best online slot providers, including NetEnt, Play ‘n GO, Games Global and Playtech. We also list the slots sites where the latest slots are available.

Best Slots

Want to read reviews on the best online slots? You’ve come to the right place. With 1,000s of online slot games to choose from these days, we’ve hand-picked only the very best for you. These are popular with casino players and we highlight the reasons why in the in-depth slot reviews. This includes the best free slots as there are demos versions of these favourite titles.

Megaways Slots

The Megaways game mechanic by creator Big Time Gaming has taken the online casino world by storm since it was made popular by the iconic Bonanza Megaways slot. With so many moving parts, our detailed Megaways slot reviews explain the engine behind our Megaways game which can vary as well as a look at the various exciting features they come with.

Jackpot Slots

Looking for a life-changing win? Check out our list of jackpot slot games which offer you the chance to win progressive jackpots. These include games with the highest online jackpots that have 7 or even 8-figure payouts.

Best RTP Slots

If you want the highest RTP slot games, you’ve come to the right place. Find out which slots have the best return rates which give you more winnings back per spin on average. You’ll also find a list of the best payout slots.

The Best Slots Sites (UK)

All slot sites found here at Online-Slot.co.uk are UK licensed and trustworthy. They also adhere to the strict and fair policies set out by the Gambling Commission (UKGC). We’ve personally played at these top slot sites which have a wide selection of the best slot games.

  1. 1
    Get 100 Free Spins when You Bet £20
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    #AD New customers only. £10 min deposit. Opt-in and Bet £20+ 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.
  2. 2
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    18+. New customers only. Opt-in required. 50% Deposit Bonus up to £100 on first deposit. Min deposit £20. 10x wagering on bonus amount. Max Bet/Spin €5 or local equivalent. Bonus valid for 7 days. Game, play and payment method restrictions apply. #ad Play responsibly • BeGambleAware.org

  3. 3
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    #AD | 18+. For new 888casino UK/Ireland customers. Min £10 first deposit (NETELLER/Skrill excluded). 100% bonus equal to the deposit, up to £200. Must claim bonus via email/pop-up/My Account within 48 hours. 40x wagering req applies and must be met within 90 days on selected games. Play Responsibly. National Gambling Helpline: 0808 8020 133. GamCare.
  4. 4
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  5. 5
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    #AD | New customers: Deposit £10+ and wager 1x on casino games (wagering contributions vary) within 7 days from registration. Get 200 Free Spins on Big Bass Splash (worth 10p each), valid 3 days, no wagering on winnings. Opt-in required. 18+. T&Cs apply

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    First deposit only.This offer is only available for first time depositors. Min deposit is £10. 80 Free Spins on Big Bass Bonanza. Spin Value: £_0.10. This offer cannot be used in conjunction with any other offer. This offer is only available for specific players that have been selected by PlayOJO. If you have arrived on this page not via the designated offer via PlayOJO you will not be eligible for the offer. Irregular play may lead to removal of reward. OJO’s Rewards and Game policy applies. #ad
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    #ad 18+. First deposit only. Deposit £20 or more and receive a 25% Deposit Match bonus up to £50 cash reward. 10x wagering applies on selected games. Must complete wagering and claim reward within 28 days of first deposit. One welcome offer per customer. Full T&Cs apply.

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    *Click for full T&Cs. New members only, must opt in. Not valid with other Welcome Offer(s). Min £10 deposit & £10 wager on slots game(s). 30 day expiry from deposit. Free Spins: on MONOPOLY Cash Is King. 1p coin size, 10 lines. Play Responsibly. GambleAware.org. 18+

  10. 10
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    #AD | New Players Only. Wager from real balance first. 10x wager the bonus money within 30 days and 10X wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: £50 the bonus amount or from free spins: 20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Terms & Conditions. 18. #AD. BeGambleAware.

  11. 11
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    #ad New Players Only. Wager from real balance first. 10X wager the bonus money within 30 days and 10x wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: from the bonus amount: £50 or from free spins: £20. Min Deposit £20 required. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply.

  12. 12
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    #ad New Players Only. Wager from real balance first. 10x wager the bonus money within 30 days and 10X wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: £50 the bonus amount or from free spins: £20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply.

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    18+. New players only. 100% First deposit bonus up to £50: Min deposit £10. Wagering: 35x deposit amount to unlock as bonus cash. Bonus balance not playable until wagering is met. 20 Free Spins on Big Bass Splash (no wagering). Free spin winnings credited to cash. Expiry: Bonus balance 90 days; Free Spins 2 days. Game Contributions: Wagering on table games, live casino, Slingo, video poker & instant games contributes 10%. Neteller & Skrill deposits not eligible. T&Cs apply. #ad

  14. 14
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    #AD | 50 Free Spins awarded on Big Bass Splash (£0.10/spin). Deposit & wager £10+ on slots on the same day. Free Spins winnings paid as cash with no wagering. Spins expire after 5 days. New customers only. 18+.Full T&Cs apply.

Why Online-Slot.co.uk?

Online-Slot.co.uk is dedicated to providing the best online slots reviews. With a focus on the UK market, our team of experts have worked in the online gaming space for nearly 40 years combined. We work closely with slot providers, so we know the thinking behind and all the ins and outs of a particular online slot, which helps us write detailed slot reviews for you to read.

We’ve played thousands of slots, both at old and new casino sites in the UK, online and at land-based casinos, pubs and arcades. We aim to arm you with the necessary information so you can pick the right online slot for you, but we also provide detailed online casino reviews to make it easy for you to choose the best slot sites.

Check out our How We Rate page for more details on our slot/casino rating systems.

Play Free Slots Here

Alongside our extensive online slots reviews, you will find free play slots. This means you can play slots for fun here at Online-Slot.co.uk. This allows you to sample the best slots and get a feel for when you play for real money at your chosen slot casino.

With over 5,000 online slot games available, finding the right one(s) can be daunting. You can play demo versions before visiting an online casino to see if you like it. With no download or signing up to complete, you can browse at your leisure and spin away to your heart’s content.