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Top 20 Online Casinos UK - by Casino Professor

The Professor has never seen iGaming as busy, and this has compelled him to create his very own top 20 online casinos UK list. New platforms are popping up left, right and centre – with many being certified UK online casinos thanks to their acquisition of a Gambling Commission license. But with so many options, how do British players distinguish top casinos in the UK from the fakers?

As the Professor can’t create a unique article for everyone, it’s impossible for him to pluck out just one casino and call it the “best”. Instead, he’d like to run you through his top 20 online casinos UK – in no specific order – and briefly explain why each one made the cut.

Are you sitting comfortably?


One of the most stripped back, classic casino sites around, Dunder has been live since 2016. Yet, that stat seems incredible considering the popularity they’ve built up in such a short space of time! A true gift for the gamers amongst us.

Why Dunder? The SMS, two-factor security feature. It’s a staple in other areas of the internet, but not everpresent in iGaming – even for most top 20 online casinos UK!


The birth of the so-called adventure casino happened in 2012 with the launch of Casumo. This completely new experience revolutionised iGaming, with several mimicks and clones trying to replicate success. Casumo have since racked up multiple awards for their efforts (Casumo Wikipedia – Awards).

Why Casumo? There’s no substitute for the real thing, so Casumo sailed into the Professor’s top 20 online casinos UK list.


The superhero of UK casino sites is Captain Rizk, with this protagonist on a mission to offer players “no bullshit” rewards. Rizk have had famous faces promote this message down the years, but it’s really because of their website for both mobile and desktop that – to borrow a famous Apple link – just works.

Why Rizk? The Wheel of Rizk! Give it a spin to get a casino bonus with no wagering every time!

Mr Green

If Captain Rizk is the superhero, Mr Green is the most stylish. This slick operator makes this top UK casinos list with ease, and he also happens to have forged a strong bond with the Professor too! Check out our exclusive casino bonus from Mr Green for something a little different.

Why Mr Green? They know how to look after players – see their Promotions page, slot tournaments and Green VIP club for more.


While not exclusive to us, Videoslots have a funky welcome bonus that’s sure to catch the eye. It includes wager-free spins, up to £200 as a bonus, plus £10 extra cash thrown in. Maybe you can use some of this to take part in a Battle of Slots – which is Videoslots’ poker-style competitions, in case you were wondering.

Why Videoslots? The sheer number of slots and games at this top 20 online casino UK is ridiculous – 3,000+ and counting!


If Casumo pioneered the adventure theme, LeoVegas proclaims to be the “King of Mobile Casino” – and who can really argue with that!? They undoubtedly played a huge part in driving iGaming to smartphones/tablets, Android/iPhones – so they’re another easy addition to the top 20 online casinos UK.

Why LeoVegas? Use previous eBay activity to your advantage by depositing via PayPal at LeoVegas.


Similarly to the gentleman, the Professor has also pulled some strings with LV BET – this time to bring you exclusive free spins no deposit! Once you’re done with that, up to £1,000 and 1,000 LV Spins could be yours over the course of four deposits, but that’s not all LV BET have on the menu.

Why LV BET? Combine all the classic entertainment – slots, live, table etc – with sports betting for a more complete gambling site.

Royal Panda

The Panda has been one of the top 20 online casinos UK for years in the eyes of many. The Professor clearly agrees, but why?

The Loyal Panda reward scheme is a little bit different, with trips abroad, the latest technology, plus tickets to events joining your classic offers. Throw in all the entertainment and you’ve got a very good platform on your hands”.

Why Royal Panda? Get things off to a great start with no deposit Starburst free spins.

Metal Casino

Backed by some of the biggest names in the genre, Metal Casino truly bridges the gap between music and casino. The industry has been flirting with this for a while – such as the NetEnt Rocks slot game trilogy – but Metal Casino have truly created a platform the befits both.

Why Metal Casino? A totally unique theme, with the opportunity to win REAL metal merchandise.

Casino Room

One for experienced heads now as the 2005-launched Casino Room becomes one of the Professor’s top 20 online casinos UK to play at. Their live chat is supportive and helpful, and how often do you find a site that gives you a say with bonuses…?

Why Casino Room? You can choose your casino bonus for your first 5 deposits.

Wink Slots

Wink Slots? Yep, while not a classic entry into the top 20 UK online casinos UK for some, the Professor has been mightily impressed by what he’s seen. They’ve got the classic entertainment to back themselves up – including those BIG jackpots – plus a Magazine section to help new gamers get to grips.

Why Wink Slots? A whopping £400 exclusive casino bonus with 30 registration spins.


We’re into the second half of top 20 online casinos UK, but there’s plenty more still to come! Take Yeti, for example – a gambling site which doesn’t take itself too seriously, hence the name! You’ll find the same quality slot providers though, with regular promotions to see you through.

Why Yeti? A total of £1,000 is given away EVERY week thanks to Yeti’s slot competitions.


Adding a relatively new online casino in Highroller is a bold move, but one the Professor can back up. After all, how else would you get to visit the iGaming underworld Metrocity!? That’s exactly what new gamers get to do on entry, with the aim of the game to make a name for yourself that no one wants to mess with.

Why Highroller? An awesome take on the adventure casino, but the best part is stealing coins from unsuspecting players!


They’re one of the oldest gambling sites around, but 888 still make it into the Professor’s UK online casinos list of choice. Of course, they’re also known for sports betting, poker and bingo too – but 888’s casino arm is still very impressive.

Why 888? Tried and tested experience, with a few recent upgrades making mobile casino here even better


Looking for a PayPal online casino? That’s far from the only reason why you’d start to play at Betsafe, but it immediately gives a good first impression. Not many land eBay’s signature payment method after all.

Why Betsafe? They’re a really classy outfit with literally all kinds of gambling under the same roof – slots, live, table, poker, sport, virtual, plus more!


A nice little no deposit bonus is boosted by a £25 offer at ComeOn. Think it’s too low? Consider how a low welcome package such as this keeps the wagering requirements down, and you’ll be delighted it did if you manage to scoop a few wins!

Why ComeOn? Two mobile apps for iOS and Android see ComeOn enter the Prof’s UK casinos list of best mobile play.

Gala Bingo

Another that wouldn’t be at the forefront of the usual top 20 online casinos UK is Gala Bingo. But the Professor is here to shine some light on this casino’s class. Of course, bingo plays a big part – but multiple promotions, including guaranteed spins with Happy Wheel, show that slots and casino are highly regarded.

Why Gala Bingo? Any British TV lover will notice Gala Bingo’s close association with popular daytime quiz show The Chase.

All British Casino

You couldn’t really have UK online casinos list without All British Casino, right? Well, to be honest, the Professor isn’t interested in what fits the bill aesthetically – it’s all about casino for him. Luckily, All British Casino have something special lined up for the Prof’s readers.

Why All British Casino? Join for exclusive free spins no deposit on NetEnt’s Gonzo’s Quest at this top 20 online casino UK.

Fun Casino

A sister site to All British, Fun Casino is of a similar mould with 11 rounds available to those who create a new account. From then on, you can browse through Fun’s vast selection of titles – with plenty of payment methods to facilitate your needs.

Why Fun Casino? Any winnings will be in your account within 24 hours.


You made it! The final entrant into the Professor’s top 20 online casinos UK is BGO – with a rather special welcome package to reward you. After receiving some flak, BGO decided to offer bonuses with no wagering requirements – including the 10 no deposit spins below, which also have no max cashout.

Why BGO? In fact, near enough every bonus at BGO is wager free – meaning whatever you win is yours to keep!

Casino Professor

Casino Professor

Casino Professor, or just Prof among friends, is an older guy with a knack on online casinos. Among gracefully ageing reviewing online casinos has become his life mission.