UK flag

The UK gambling market is one of the biggest and the best in the world. It’s home to betting companies that are over 100 years old, as well as brands that resonate across the global gambling market, from the historic Ladbrokes to the comparatively young Mr. Green. With so many top casinos in the UK, it’s hard to know where to start, and that’s what this guide is for.

We will help you to find some of the best online casinos in the United Kingdom for 2021, highlighting their biggest bonuses, best games, and much more. If you’re looking for a new online casino bonus in the UK, and want to stick with reputable, respected, and exceptional sites, look no further!

Our top recommended UK online casinos 2021

MrPlay Logo100% up to C$1600 + 150 Free SpinsVisit
Queenplay Logo200 Spins + up to
C$1000 Bonus
MrPlay LogoUp TO C$1,111 Bonus
+ 300 Spins
Casino Name Bonus Offer No. of Games Payout Speed Win Rate
Jackpot Joy 30 Free Spins 100+ 1 day+ 95%
Ladbrokes Collect up to £50 in Bonus credits 400+ 1 day+ 96.4%
Paddy Power Up to 100 Free Spins 450+ 4 hours+ 97.3%
William Hill Up to £300 700+ 1 day 96.7%
Betfred £5 Free 800+ 1 to 2 days 96.84%
Betway Collect up to 200 Free Spins 450+ 1 to 3 days 97.3%
Unibet Bet £10 Get £40 1,300+ 1 to 2 days 96.3%
Sky Vegas 50 No Deposit Spins 400+ Up to 24 hours 97.3%
Starspins Bet £10 & Get 30 Free Spins 400+ 1 to 2 days 96.4%
Mr. Green £100 and 50 Free Spins 2,300+ 12 hours+ 96%
Gala £20 and 30 Free Spins 300+ 1 to 2 days 96.2%

Jackpot Joy

Jackpot Joy adverts have graced our screens for a couple of years now. Often fronted by the loveable Paddy McGuinness, these ads are fun and energetic, and this is a vibe that Jackpot Joy tries to instil into its online casino.

You will find a variety of online casino games, including slots, bingo, table games, and more. You are also entitled to a big Welcome Offer bonus when you take your first steps with the site and join this friendly community.


Jackpot Joy is a bingo site first and foremost, and you can collect £50 in bingo credits with your first £10 deposit. But that’s not all, as an alternative offer promises 30 Free Spins for use in the casino section.

Pros of Jackpot Joy

Payment Options: MasterCard, Visa.

Games Offered: Double Bubble, Tiki Island, Jewel Race, Paper Wins, Rainbow Riches

Support: Live Chat. FAQs.


Although Jackpot Joy tends to focus more on bingo than slots, it still has hundreds of real money slots for you to spin, including some of the best new games for 2021. If you enjoy the occasional game of bingo, you can buy a few tickets here and there, but you don’t need to be a bingo fan to play here.

 Visit Jackpot Joy login & review page

Ladbrokes Casino

Ladbrokes is a huge UK gambling site that dips its toes into the world of sports betting, bingo, poker, slots, table games, and more. It was founded way back in 1886 and is one of the country’s best-known and most-respected brands, with thousands of locations nationwide.

You can see the famous red and white Ladbrokes name on pretty much every UK high-street, and if you venture into its online home, you’ll have a variety of great games and big bonuses at your disposal.


Ladbrokes knows how to treat its players, and you’ll find an abundance of bonuses aimed at loyal players and new players, including all of the following:

Pros of Ladbrokes

Payment Options: MasterCard, Visa, PayPal, Maestro, CashtoCode, PaysafeCard, Trustly, Luxon.

Games Offered: Fishin’ Frenzy, Eye of Horus, Rainbow Riches, Immortal Romance, 9 Pots of Gold, Money Mutiny, Rainbow Rewards

Support: Live Chat. Contact Form.


You can’t go wrong with Ladbrokes. You don’t become one of the UK’s biggest online casinos without doing something right. So, sign up, log in, grab your 2021 Welcome Bonus, and see what all the fuss is about.

Visit Ladbrokes login & review page

Paddy Power Casino

Paddy Power is part of the Flutter Entertainment group, one of the biggest online gambling groups in the world. It began its life as a traditional sportsbook, before venturing online and making its mark in the online casino sector.

In 2021, Paddy Power is one of the best online casinos in the UK, with a selection of exclusive games, unique bonuses, and all the other things that get players excited!


The Paddy’s Reward Club gives you plenty of reasons to stick around for the long-haul, as it’s loaded with loyalty bonuses and rewards, but that’s not all, as there are several other promotions to collect:

Pros of Paddy Power

Payment Options: MasterCard, Visa, PayPal, Maestro, Paysafecard.

Games Offered: Regal Streak, Clash of Beasts, Bounty Raid, Aztec Spins, Wild Wild Chest, Epic Journey, Divine Ways

Support: Twitter (@AskPaddyPower). Live Chat. [email protected]. 0800 565 275.


Paddy Power is a truly epic online casino that deserves every last drop of its pristine reputation. If you haven’t already joined this site, you’re missing out. Sign up today, collect your Paddy Power bonus, and enjoy one of the best UK casinos in 2021!

→ Visit Paddy Power login & review page

William Hill Casino

William Hill launched in the 1930s and was one of the UK’s first major brands to make the move into online casinos. In the early 2000s, it had one of the biggest and best casinos and in 2021, it’s only gotten better. This multi-billion-pound brand rewards its loyal players with regular bonuses, great games, and some of the most dedicated customer support around.

If you’re looking for a new UK online casino for 2021, look no further than this famous brand.


You can collect several hundred pounds when you first join William Hill, and that’s not all, as there are stacks of other bonuses available as well.

Pros of William Hill

Payment Options: MasterCard, Visa, PayPal, Maestro, Bank Transfer, PaysafeCard, Neosurf, Cash Direct.

Games Offered: Gonzo’s Quest, Payday Megaways, Starburst, Crazy Time, Mega Moolah, Book of Dead, Bonanza Megaways.

Support: 0800 085 6296. Live Chat. Social Media.


The famous deep blue of the William Hill brand is almost comforting to experienced gamblers, as they can’t be beaten when it comes to quality games, support, and bonuses. If you have yet to experience William Hill for yourself, sign up and log in today—there are some huge casino bonuses waiting for you!

→  Visit William Hill login & review page 


Betfred has been around for a long time. Like many major UK betting sites, it began as a relatively modest sportsbook, before growing into a massive online casino and iGaming site.

In 2021, you can play hundreds of top slots and table games on the Betfred online casino and if you fancy placing a few bets, you can take a quick detour and make some wagers on the latest football match, rugby game, or snooker frame. The beauty of Betfred is that you always have a wealth of options at your disposal.


When you bet £5 you will get a free £5 from Betfred, and that’s not all, as there are a few other bonuses available. The one that will appeal to most new players is the 50 Free Spin offer, which is triggered with a deposit of just £10.

Pros of Betfred

Payment Options: MasterCard, Visa, PayPal, Maestro, Skrill, Neteller, PaysafeCard.

Games Offered: Kingdom’s Rise, Ascot Sporting Legends, Age of the Gods, Berry Berry Bonanza, Wild West Wilds

Support: Live Chat.


Betfred has been around for a long time, but it’s not resting on its laurels and continues to push harder and do more, always striving to be one of the biggest and best. In 2021, it remains a king among men and we recommend signing up, logging in, and experiencing the site for yourself.

Visit Betfred login & review page  


Betway was founded in 2006 and quickly grew into one of the UK’s biggest online gambling sites, offering bigger bonuses, better games, and going all-out to keep its players happy. In 2021, Betway is still a top dog in the gambling sector, and you’re just a couple of clicks away from experiencing it for yourself!

If you want to try one of the best UK gambling sites, sign up to Betway today.


Betway offers bonuses for its new members and its loyal ones, and there are stacks of promotions available for both.

Pros of Betway

Payment Options: MasterCard, Visa, PayPal, Maestro, Skrill, Neteller.

Games Offered: Mega Moolah, Thunderstruck II, 9 Masks of Fire, Book of Oz, Break Da Bank Again, The Bounty

Support: 0-808-238-9841. [email protected]. Live Chat.


If you need an incentive to join Betway, consider this: One of the UK’s biggest ever jackpot slot payouts occurred on the Betway casino, when one lucky player scooped over £13 million on Mega Moolah. He bet just 25 pence and won a life-changing sum, and if you want to be in with a shot of copying him, you need to sign up, log in, and start playing today!

→ Visit Betway login & review page  

Sky Vegas

Sky Vegas is part of a vast iGaming empire that covers a betting site, poker room, and more. It’s all closely connected to Sky Television and is backed by some of the biggest developers and creators in the country.

All of these features combine to create a dazzling online casino that leads the field in unique promotions and exclusive games. It’s huge, it’s fair, and it has a little something for everyone.


There are two main bonuses available for new players at Sky Vegas and if you sign up and deposit, you can get both of them. The first offers 50 spins without a deposit required, the second gives you 200 Free Spins when you deposit £10.

Pros of Sky Vegas

Payment Options: MasterCard, Visa, PayPal, Maestro.

Games Offered: Allsports, Birdz, Black Widow, Black Knight II, Beehive Bedlam Reactors

Support: Contact Form.


Sky Vegas attracts a lot of new players every year, and when you see the size of the no deposit bonus, it’s easy to see why. Sign up today to get those Free Spins and start building your Sky Vegas account balance!

→ Visit Sky Vegas login & review page 


Starspins is a UK online casino that keeps things simple, offering players a selection of top real money slots and jackpot games on a site that doesn’t bombard you with notifications and endless features.

If you’re looking for a simple but generous UK online casino in 2021, Starspins could be just what you need. And if you’re a casual player who enjoys big bonuses and even bigger jackpots, this is definitely the right choice for you.


Starspins invites all new players to collect 30 Free Spins when they deposit and play with just £10, and there are a couple of loyalty promotions available as well.

Pros of Starspins

Payment Options: MasterCard, Visa, PayPal, Maestro, Bank Transfer, PaysafeCard, Ukash.

Games Offered: Double Bubble, Cleopatra, Jewel Race, Spartacus, Crazy Time

Support: [email protected]


Starspins has partnered with some of the best-loved iGaming developers in the United Kingdom to provide players with an eclectic selection of games that work across most platforms.

Sign up today to collect your Welcome Bonus and start spinning for those big jackpots!

Visit Starspins login & review page


Unibet is the jewel in the Kindred Group’s crown, one of the richest gambling brands in the world. It is a sportsbook, poker site, and online casino all rolled into one, and it has over 1,300 games for players to explore, including 950+ slots.

Deposit with PayPal, debit cards, and more; play casino games to your heart’s content and go big with bonuses! The fun never stops on Unibet, and that’s why it’s one of our favourite UK online casinos in 2021.


Your first £10 deposit at Unibet will trigger a bonus of £40, giving you everything you need to explore the casino’s many games. But that’s not all, as there are a few other bonuses to collect.

Pros of Unibet

Payment Options: MasterCard, Visa, PayPal, Maestro, Skrill, Neteller, PaysafeCard, Trustly.

Games Offered: Jungle Mega Moolah, Wings of Hermes, Jack Frost’s Winter Infinity Reels, Fruit Bonanza, Big Money Frenzy, Doubloon Island

Support: [email protected]


Unibet keeps its players interested with regular bonuses, monthly prizes, daily jackpots, and a variety of games. Take your pick from over 950 slots and many more table games and enjoy some of the best games in 2021.

→ Visit Unibet login & review page 

Mr. Green

The enigmatic mascot of Mr. Green has been plastered across TV screens, online banners, and offline advertising for many years now, steadily turning this brand into a force to be reckoned with in the online gambling industry. In 2021, Mr. Green is still on the rise, and in our opinion, it’s one of the best casinos in the UK.

The aesthetic has a Paddy Power vibe to it, and it’s also just as big and impressive, but make no mistake about it, Mr. Green doesn’t copy from anyone. It’s an original casino that always stands out from the crowd.


As a new member at Mr. Green, you can get a 100% deposit bonus that is capped at £100. You will also be given 50 Free Spins to use on the brilliant Starburst slot.

Pros of Mr. Green

Payment Options: MasterCard, Visa, PayPal, Maestro, Skrill, Neteller, Trustly, PaysafeCard.

Games Offered: Lucky Mr. Green, Book of Dead, Starburst, Reactoonz, Wolf Gold, Lucky Lady’s Charm

Support: [email protected]


Join the mysterious Mr. Green and play at one of the UK’s fastest-growing online casinos. Collect your Welcome Bonus, choose your games, and see where your online journey takes you!

→ Visit Mr.Green login & review page 

Gala Spins Casino

The Gala name has adorned many massive venues across the United Kingdom and while it was once a bingo-centric brand, it has now ventured into online casinos with Gala Spins. This site doubles-down on the bonuses, offers an eclectic variety of games, and allows players to deposit and withdraw using a number of payment methods.

Whether you have some experience with Gala Spins or not, we recommend taking a look at this review and seeing what this site has to offer for 2021.


The Gala Spins Welcome Bonus is fixed at £20 and 30 Free Spins, but it offers so much more. All players are invited to participate in a reward scheme that tasks them with completing quests to unlock prizes and generate bonuses, spins, payouts, and more.

Pros of Gala Spins

Payment Options: MasterCard, Visa, PayPal, Maestro, Skrill, Neteller, ecoPayz, PaysafeCard, Trustly, Bank Transfer

Games Offered: Diamond Mine, Reel Lucky King, Eye of Dead, Genie Jackpots, Cluedo Cash Mystery, Vegas Cash Spins, Madame Destiny Megaways

Support: Live Chat.


Whether you’re spinning the reels on a Megaways slot or gunning for a jackpot on Jackpot King, Gala Spins has a little something for everyone. Sign up today, collect the aforementioned Welcome Bonus, and start playing!

→ Visit Gala Spins login & review page 

Summary: Play the Best UK Casinos in 2021

As you can see, there are a huge number of top-tier casinos available to players in the United Kingdom. 2021 is proving to be a big year for the online gambling industry and these sites are the cream of the crop!

Revolution Casino
Welcome package up to 1,000$ + 300 free spins
Lucky Start