Compare UK Online Casino Sites

Welcome to Spin Bonus where you can compare legitimate, fully licenced and regulated UK online casino sites and slot sites, Here you can find and compare casino bonuses and free spins galore at the best and most trusted online casinos in the UK.

Top Picks July 2021

mfortune logo
£10 bonus on registration no deposit needed + 200% deposit match up to £100
no deposit

18+ | T&Cs Apply

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18+. New players only. Welcome bonus expires after 7 days. Up to 10 (20p) free spins on Super Win 7s for 10 days, Min Deposit £10. Winnings paid as bonus credit. Expire 00:00 every day. Max withdrawal from free spins and welcome bonus winnings £200. Up to 200% deposit match of first deposit (Min £10). Max £100 bonus awarded as bonus funds. 20x wagering on bonus funds. Withdrawing Unspent Qualifying Deposit will exclude the player from these promotions. Full T&C’S apply

amber spins logo
Amber Spins
100% Bonus up to £30 & 25 Free Spins - Promo code: SPINS
brand new

18+ | T&Cs Apply

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First-time depositors only (18+ UK Only – excluding players based in Northern Ireland). Min Deposit £10. Max Offer: 100% Bonus Up To £30 Bonus Plus 25 Free Spins. Promo code: SPINS.  Bonus winnings must be wagered 40x.  Games bonus winnings will be capped at £100+ original bonus amount. Free Spins are valid for 7 days. Free Spins winnings are credited as bonus funds with 40x wagering. Free Spins winnings are capped at £2.5. Wagering contribution varies by game. We reserve the right to deny bonuses based on abusive bonus activity across sites operated by the Company. Deposit balance is available for withdrawal at any time(UK only). Odds of winning vary between players depending on gaming and deposit activity.  General withdrawal restrictions & full T&Cs apply. Valid until 31.12.2021

kassu logo
Kassu Casino
100% up to £100 & 300 Free Spins
top offer

18+ | T&Cs Apply

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18+ Full T&C’s Apply New players Only. £10 min deposit. £5 max bet using the bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on pre-selected 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. Skrill + Neteller excluded. Always refer to Bonus Terms.

bgo casino logo
bgo Casino
Win up to 500 Free Spins from the Mega Wheel. Zero withdrawal fees
Top Pick

18+ | T&Cs Apply

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UK only. Win up to 500 spins from Mega Wheel on first deposit. 24-hour expiry. Max bet £2.50, Max Spins win £8 per 10 spins, Max Bonus win £150, selected games & 65x wagering on winnings. Min deposit £10. No Neteller/Skrill. Full T&Cs apply.

leovegas logo
10 Free Spins On Book Of Dead – No Deposit Required

18+ | T&Cs Apply

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Full T&Cs apply. No deposit required & new players only. Claim from “My Offers” within 3 days of registration & 3 day expiry. 10 free spins worth £0.10 each on Book of Dead, winnings paid as cash. 18+


We are a dedicated team of professional online casino reviewers with over 15 years iGaming industry experience, our aim is to provide you with the best choice of fully licenced UK online casino sites to register and play at safely. By reviewing and comparing UK casino sites and offers we give you access to the best deals, bonuses and free spins.

If you enjoy playing online slots and casino games we are sure to have a deal that suits you, we cater for all types of players from high rollers to freebie hunters. At Spin Bonus, we love offering our visitors the latest UK casino offers and promotions for new and existing members at fully licensed and UK Gambling Commission (UKGC) regulated online slot sites and casinos.

What You Will Find at Spin Bonus

Our reviews give you the full lowdown on every UK licenced online casino offering free spins and deposit bonuses. We look deeper into sign up bonus and free spins offers and include terms and conditions and wagering requirements in all our comparisons and reviews.

Almost every UK online casino will offer some kind of welcome bonus, which helps to attract and incentivise new audiences to play on their site. Online casinos can be very competitive when it comes to their bonus offers, so it’s well worth reading our reviews & Recommendations here on Spin Bonus to ensure you’re getting the best deal you can.

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How We Review & Compare UK Slot Sites & Casinos

1Background & ReputationFirst of all, we take a look at the company behind the casino, probe its reputation and look over any sister sites owned by the same company.
2RegistrationWe register at the online casino and asses the ease of the registration process
3UsabilityWe will browse the casino lobby and click around the site to assess the quality of navigation and ease of use.
4GamesOur reviewer will try out and play the slots and table games, gauge the game options and the selection and choice of software providers.
5BankingWe diligently check the casino deposit and withdrawal options and weigh up the quantity and quality options available. Here we also take a look at the payout speed
6Welcome BonusOur expert will evaluate the ease and process of claiming the welcome bonus and check terms and conditions and wagering requirements. If a deposit is required to claim the bonus we will make the minimum deposit
7PromotionsWe note the quality & quantity of the current promotions and research the regularity of new promotions being added.
8Customer ServiceThe Reviewer will check the amount of customer support options and response times to determine the quality of customer service.
9CompatibilityWe then repeat steps 3 & 4 on iOS, Android & Windows mobile devices to ascertain the casino usability on mobile phones and tablets.
10CompareWe compare each assessment to a data set derived from the most popular online casinos in the industry.
11SummariseFinally, we will summarise our findings and determine a rating based on our experiences, list pros & cons and recommended alternatives where appropriate.

Our Mission

At Spin Bonus, our mission is to find the best UK slots sites and casinos for you; one at which you gain as much enjoyment as possible, an online casino that is safe and secure and, undoubtedly, a platform that provides great opportunities to reach your goal of winning incredible prizes. We assess and compare casino bonuses, ongoing and regular promotions, competitive tournaments, highly rewarding loyalty programmes or even simply the provision of fantastic games with impressive RTP (Return to Player) rates.

In addition to these important factors, we research and discover diverse themes and a variety of entertaining features such as video slots top table games, progressive jackpots and more. We believe the best UK online casinos should be unique in their approach to providing entertainment and rewards, as well as extensive games libraries provided by the finest software developers in the industry, we take all this into consideration when reviewing online casino sites.

Comprehensive Casino Reviews by Experts

Begin your search for the best slot sites in the UK by checking out our comprehensive reviews; we’re all about bonuses and free spins you’ll find easy to browse review categories such as new casino sites, high roller casinos and best casino sites by the certain operators, such as Nektan or Dragonfish. Check out each casino rating, welcome bonus and promotions, games library review and loyalty rewards information. Customer support data can also be found within our detailed online casino reviews, as well as those all-important deposit and withdrawal payment methods. With each casino or slot site summarised in one place, it’s no hassle finding and registering with a great online casino that works for you.

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The Spin Bonus team of casino experts don’t stop there! When awarding ratings we also take into consideration the following criteria:

Best Casino Deposit Bonus Offers

deposit bonusesHere you will find which are the current Best casino deposit bonus offers at licensed and regulated casinos in the United Kingdom. Some of the recommendations on this page do not require a deposit and some offer a cash deposit match bonus.

This page is updated constantly with only the best, current and valid casino no deposit bonus and cash match offers including information on how to claim the bonus, the terms and conditions and a link to the offer. There are also sub-sections on this page with more refined bonus offers such as Free £5 No Deposit Casino offers and bonuses with no wagering requirements.

Discover the Best Free Spins Offers

free spinsFree spins are usually awarded to online slot players on registration as part of an incentive such as a welcome bonus or another kind of promotion. Operators usually allow them to be used across all of the online casino slot games on the site. But it is worthwhile reading the significant terms and conditions on our site to double-check.

We have amassed a huge selection of online casino and slot sites offering Free Spins on Registration. Some offers on this page require no deposit, just register a debit card and free spins will be awarded. Some require a small deposit but, in those cases, the number of spins awarded is usually greater. You can easily browse through all our offers and there is nothing stopping you from choosing more than one, in fact, it is possible to sign-up to every slot site on this page and claim every offer, but if you do decide to make a deposit please do remember to responsibly.

Mobile Casino Offers

mobileThe best casinos also should be fully optimised for usage on mobile devices; including iOS and Android phones tablets as well as laptops, desktops and Macs. As a result, you can play at your favourite UK casino both at home or on the go, on whichever device you prefer

If you prefer to play slots and casino games on your mobile phone, be sure to check out our page dedicated to mobile gamblers. Here you will find the latest free spins no deposit mobile casino offers along with mobile casino bonuses. We even have a section dedicated to pay by phone casino sites whereby members can deposit funds into their casino account via their phone bill or by using phone credit.

Popular Mobile Casinos   
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Brand New Casino & Slot Sites

new sitesChoosing a new casino or slot site to play at can be tricky. There are so many brands in the industry offering numerous welcome bonuses, promotions and premium online slots and casino games, plus there are new UK casino sites almost daily.

Not every punter has the time – nor the hefty bank balance – to trial every new casino in order to find the best new gambling sites to suit their needs and preferences. Additionally, it can be problematic for UK players to figure out the best new casino sites which offer fair, safe and officially UKGC regulated gameplay.

That’s where our expertise comes in handy. We’ve done the hard work; we’ve spent hours upon hours rigorously testing and reviewing many new casinos, and we only recommend premium platforms that are licensed and regulated by the UK Gambling Commission. The new online casino and slot sites we endorse feature impressive games libraries, competitive casino bonuses, lucrative loyalty schemes and regular promotions.

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The Spin Bonus Hub

Take a look at the Spin Bonus Hub, where you will find useful information and articles about gambling online in the UK