Slotsia – Best Casino Comparison Site 2021

You’ve just arrived at Slotsia – the UK’s best comparison site for online casinos. This is the place to be if you like to get the top free spins and casino bonuses. Claim an offer through Slotsia and try out the most impressive new casinos!

As a UK player, you can find plenty of casino sites to choose from. We’re players ourselves, so we know what you’re looking for, and you’ll find that our professional advice really hits the nail on the head! Our highly-rated casino recommendations all feature a large number of top casino games, spiced up with innovative gamification features and, of course, the most generous bonuses and promotions.

More than that, we provide first-hand slot reviews and gambling advice for all players. Whether you’re a first-timer who’s never dabbled in online casinos before or you’re an experienced high roller who can afford to stake big and take advantage of VIP perks, you’ll find exactly what you’re looking for at Slotsia.

What Can You Find at Slotsia?

We provide everything you need to start comparing casinos and games today. With our expert reviews and information, you can find the ultimate casino sites and bonuses to make the most out of your online gambling experience.

Slotsia logo on transparent background with four leaf clover

Gold Cards icon Online Casino Recommendations

Before we recommend a casino to you, we evaluate it thoroughly and fairly. All of our casino reviews are honest. We’ve reviewed over 190 different UK casinos and we’re adding more every week!

Present Icon The Best Casino Bonuses

Who doesn’t love a bonus? There’s nothing more disappointing than signing up to a casino and getting a rubbish offer. Through us, you can find and claim the best bonuses, including exclusive free spins and no deposit bonuses.

Bar icon Slot Reviews

What’s popular might not necessarily be worth your time or money! Our detailed slot reviews tell you all about a game’s payout percentage (RTP), bonus features and volatility. That way, you can choose which slot to play based on facts rather than fame.

Diamond Icon The Latest Casino Sites

New casinos give out the biggest and best casino bonuses! That’s why we’re constantly finding the latest sites where you can sign up as a UK player. Thanks to us, you’ll never miss an epic new deal!

red 7 icon Casinopedia Articles

In our casino encyclopedia, we cover all sorts of topics from seasonal bonuses to game RTP, volatility and much more. Browse through our articles and become a casino expert in no time.

The Best Online Casinos

This is our current selection of the best online casinos that can be enjoyed by players located in the United Kingdom. Every single casino we recommend was thoroughly checked and evaluated by our team of professional casino connoisseurs. Take a look and find the one that suits you the most! You can click on the link to go to the casino, or read our full casino review for additional information to help you weigh up your options.

50 extra spins
£50 bonus
  • 100% up to £50 on 1st Deposit
  • 20 Free Spins on Berryburst
  • Over 350 popular slot games, including progressive jackpot slots
18+, new players only. 100% bonus up to £50 on first deposit + 20 free spins on BerryBurst. Free spins are credited 24hours after first deposit as Peachy Coins which are redeemable in the Fruit Shop as free spins. Min first deposit £20. Max bonus £50. Max bonus bet £5. Max cash out £500. Wagering requirement of 40x to cash out. Games restrictions apply. Further terms apply.
110 extra spins
£50 bonus
  • 100% up to £50 on 1st Deposit
  • 100 spins on deposit for Book of Dead
  • 10 No Deposit Spins on registration
18+. New players only. Minimum deposit £10; maximum bonus is £50. Free spins are for the Book of Dead slot. Wagering requirement 35x. No deposit spins max. winnings £100. Spins available for 24 hours after being credited. Full terms and conditions apply.

Find Free Spins Bonuses

For a large choice of free spins bonuses, you’ll find no better comparison site than Slotsia. These are our favourite offers and you can claim them through the direct links, greatly simplifying your search for spins! It is a good strategy for you to visit our dedicated Free Spins page from time to time, where you can find out more about how to compare offers. Pick up hundreds of spins on your first deposit or get some no deposit spins and no wager free spins through our exclusive offers.

50 extra spins
£0 bonus
  • 50 spins for £10 bet
  • No wagering requirements
  • Household name
18+. New players only. £10 Min Transfer & Stake on Slots Within 7 days. Min 5 Game Rounds. Max 50 Free Spins On Selected Games, Credited Within 48 Hours of Qualifying. Free Spins Expire After 7 days. E-wallet & Pre-Paid Card Restrictions Apply. SMS Validation May Apply. Full T&Cs Apply.
175 extra spins
£400 bonus
  • Up to £400 over 3 deposits
  • Up to 175 Spins
  • 10 Bonus Spins when you wager £10 on Game of the Week
18. New customers only. First three deposit only. Min Deposit £10. max total bonus £400 and 175 spins. 30x bonus wagering (deposit + bonus), 30x spins wagering, 4x conversion. Selected slots only. T&Cs apply.

Get No Deposit Offers

We know how many of you are looking for casino bonuses that you can get without having to make a deposit. We’ve found the best UK casinos that offer bonus money up to £5 or £10 free! For the slots players among you, we also know which are the best casinos that offer no deposit free spins. Here are our top no deposit offers! Read more about free casino offers right here at Slotsia. We can help you decide which offer to claim, by providing inside information on wagering requirements, max cash out and other sneaky terms and conditions that might affect your winnings.

120 extra spins
£1000 bonus
  • 20 bonus spins on registration
  • 200 bonus spin in total
  • Up to £1000 Welcome Bonus
18+. New players only. Up to 20 (18p) free spins (FS) on Fire and Gold at registration (Max Withdrawal £50). Up to 100 FS on first deposit, awarded in sets over 10 days. 24hr expiry. Locked to Fire and Gold. Up to £1000 deposit match on first 5 deposits. Min £10 deposit. Dep1: up to 300%, Max £50. Dep2: up to 200%, Max £100. Dep3&4: up to 100%, Max £200. Dep5: up to 50%, Max £450. Bonuses and FS winnings subject to 40x wagering requirement. Withdrawing qualifying deposit excludes player from promotion. T&Cs apply,
50 extra spins
£0 bonus
  • 50 No Deposit No Wagering Free Spins
  • 200 Bonus Spins when you stake £10
  • Top UK casino & betting site
18+. New Customers Only. Opt In Required. 7 Day Free Spin Expiry. All Free Spins Will Auto Play On First Eligible Game Loaded. £10 Staking Requirement Must Be Met Within 30 Days Of Opt In. Eligibility Restrictions Apply. 18+ Further T&Cs Apply.

Discover New Casinos

Slotsia is an essential resource for every passionate casino player; we help you learn about new casinos before everyone else! We regularly report on all new developments in the iGaming scene and review new sites as soon as they are launched. Instead of looking all over the web for the presence of new casinos, you can quickly scan our list to find the latest casino bonuses. Discover more newly-launched casinos and what we think about them on our New Casinos page. Find out why these are usually some of the best sites to play at!

300 extra spins
£100 bonus
  • Weekly Ingredient Delivery Bonus
  • The Lab’s Monthly Bonus
  • Live Casino Welcome Bonus
18+ Full T&C’s Apply New Players Only. £10 Min Deposit. £5 Max Bet Using Bonus. 60x (40x Referred Player) Wagering Applies. Bonus Valid For 14 Days. 30 Spins On Preselected Games Will Be Credited Instantly + Then 30 Per Day For 9 Days. Free Spins Valid For 72 Hours From Credit. Max Free Spins Winnings £100. Ewallets Excluded. – Www.Begambleaware.Org
20 extra spins
£100 bonus
  • 100% Match Deposit Bonus
  • 20 Bonus Spins on Fruit Shop
  • Video Poker, Virtual Sports & Live Casino Available
18+. New players only. Minimum deposit of £10. Bonus spins are valid on Fruit Shop only and subject to 35x wagering, and must be used within 10 days, otherwise any unused bonus spins shall be removed. Bonus funds are 100% up to £100 and separate to Cash funds. 35x bonus wagering requirements and only bonus funds count towards wagering contribution. £5 max bet with bonus. Bonus must be used within 30 days otherwise any unused bonus shall be removed. Terms Apply.

Claim Exclusive Bonus Codes

At Slotsia, you can find exclusive Welcome Bonuses for new players that aren’t available anywhere else! These offers can only be redeemed with a bonus code. With your code, you can claim bonus money or free spins when you sign up and make your first deposit. See below for our top bonus code offers, and don’t forget to visit our dedicated page to find more exclusive offers and a guide on how to claim them!

45 extra spins
£150 bonus
  • 100% bonus on first deposit
  • 45 spins with bonus code SLOTSIA30
  • Exclusive bonus only available at Slotsia!
18+. NEW PLAYERS ONLY. T&CS APPLY. BEGAMBLEAWARE.ORG | KYC verified | Min deposit £10 | 100% bonus up to £150 + 45 Free Spins | 15 free spins on Book of Dead spin value = £0.10 + 30 Free Spins on Narcos spin value = £0.20 | Min 35x wagering | Bonus code: SLOTSIA30 | Skrill & Neteller deposits Excluded | Bonus & Free Spins Valid for 30 days | General Promotions Terms Apply
25 extra spins
£25 bonus
  • Deposit £10 – £25 for a 100% Deposit Bonus
  • 25 Spins on Your 1st Deposit
  • Bonus Code: ‘DREAM25’
First-time depositors only (18+ UK exc. NI). Min Deposit £10. Max Offer 100% Bonus up to £25 & 25 Free Spins [Shaman’s Dream]. Free Spins winnings are capped at £2.50 and credited as bonus funds with 40x wagering. Bonus funds must be wagered 60x before withdrawal. Slots Bonus funds winnings are capped at £100 + original bonus amount Free Spins expire after 7 days. Promo code: DREAM25. We reserve the right to deny promotional offers based on abusive bonus activity across sites operated by the Company. Deposit balance available for withdrawal at any time (UK only). General withdrawal restrictions & full T&Cs apply. Valid until 31/12/2021.


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Frequently Asked Questions

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Our casino reviews are written independently by our resident experts, who are players themselves. Our honest reviews and ratings are not influenced by the casinos in any way. When reviewing a casino, our team looks at the casino’s welcome bonuses, games, support, payments and much more before coming to a conclusion.

At Slotsia, we don’t just recommend anything because it’s available. As industry experts, we have the experience and knowledge to be able to effectively compare casinos and bonuses so that we can tell you what the best UK casinos and bonus deals are. Similarly, we know which games and game developers are worth your time. For more information, you can read our detailed reviews.

If you read one of our highly-rated slot or casino reviews and you want to try it out, you can follow the link provided to play. These are affiliate links and we may receive a small commission if you choose to use them. This helps us to stay independent and continue to offer you honest reviews of games and casinos.