Best Online Casino UK

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UK Online casinosHave you been searching to no end trying to find a UK online casino that can offer you unrivalled entertainment, a great variety of casino games and safe deposits? Our team of independent reviewers have years of combined industry experience in selecting just such casinos regulated by the UK Gambling Commission and loved by millions of online casino enthusiasts throughout Great Britain!

3 things that make for a top-ranked UK casino

  1. The ease with which you can move around a site and register quickly is a clear indication a casino brand has your best experience top of mind. Coincide this with a generous welcome bonus and a variety of top-level casinos games and you know you are on a winning wicket!
  2. A wide selection of secure deposit options and helpful customer service provides you with peace of mind.
  3. Entertaining monthly promotions with generous cash prizes that you can withdraw with ease.

How to spot a bad online casino

  • A site that is too busy and that’s screaming at you to sign up. Yet you cannot find the registration form or an easy way to contact their support staff for assistance.
  • You are burdened with onerous terms and conditions that are time-consuming to read and difficult to understand.
  • No obvious signs of being regulated by an authoritative governing body. Be aware, making deposits here, you may never be able to withdraw your money!

Did you know?

A whopping £251 million was contributed to good causes from large society lotteries between October 2016 and September 2017.

Real Money Casinos in the UK

The difference between playing for free and real money is fairly obvious but they offer different benefits. For example, if you are a player that values the variety of slot games on offer, then it’s a good idea to test drive a casino’s games for free and see what’s available. Just remember, you won’t have access to Jackpot games in Free Play Mode.

When It comes to playing for real money look at what deposit options the casino has available. Besides credit and debit cards you may want to consider depositing with a web wallet like PayPal or PaySafeCard. This option adds another level of security in our opinion and you can control your gambling spending a lot easier.

To find the available options simply visit the casino's website banking section. If you still can’t find it, you can always jump on to live chat to ask.

We know some players actually prefer to opt-out of the welcome bonus on sign-up, so this is also a good opportunity to opt-out of the bonus while chatting to a support agent.

Online casinos in UK advertising their RTP Percentages

If you see an RTP% advertised by an online casino that is usually a good sign. Listed Casino brands like Mansion are obliged to make this available while the non-listed brands like Royal Vegas generally have this audited by eCogra. Click the eCogra logo on their site to see this info.

RTP (return-to-player) refers to how much of the total amount bet on a casino game will be paid back to players over a certain time period.

Have a look at the table below from Betway and Mr Green Casino to see what we mean:

Mr Green97.5%97.3%98.3%97.3%

How we Find you the Top Ranked Online Casinos

Established by experienced players and industry veterans, A2Z will provide you with expert opinions and valuable advice around all things online casino that you can bank on.

The reasons why you can trust the casinos we recommend to be the best the UK has to offer are as follows:

  • We only endorse online casinos regulated by the UK Gambling Commission.
  • Our UK casinos offer a great games selection from the likes of Microgaming, NetEnt, Playtech and newcomers like Yggdrasil.
  • Life-changing payouts are possible thanks to massive jackpots like Mega Moola and Mega Fortune Dream. On March 8 2018, a British player won close to £4.4 million while playing from his mobile phone!
  • World-class security from the likes of Verisign, Entrust or Thawte and Innovative games like 3D slots and Live Dealer games adds exciting new dimensions.
  • Payment methods are plentiful, hassle-free and accommodate the British pound with popular options Like PayPal and PaySafeCard.
  • 24-hour support offering multiple channels to communicate.

Differences Between Land-based Casinos and Online Casinos

In the UK there are over 140 land-based casinos and due to physical constraints, most of them offer a limited range of casinos games. These land-based casinos are categorized which basically determines what they are allowed to offer. As far as we know, the highest maximum payout on slots in the UK is £10 000 while the progressive jackpots are limited to £20 000.

Now consider that around 8 million pounds have been won by a single UK player on the Mega Moolah online slot, which is but one of many progressive jackpot games, then you now know where you have the biggest potential to win really big. One last point to make is that the RTP is higher at online casinos as they do not have the overheads that most land-based casinos have.

5 Most Important things when Playing at Online Casinos in the UK

1. Reputation

How long has the online casino been in business? How secure is the website? Does it hold a valid license and/or other credentials from a recognized institution? These are all questions that determine how reputable an online casino is and should be answered before committing to a site with any real money.

2. Games

The amount, variety and quality of games on offer can be very telling of a casino’s standing. Make sure it can cater to your gaming needs, and that the games are compatible with your device and safe to download if you need to.

3. Promotions and Bonuses

Promotions and bonuses are the real drawcards for online casinos and also cut the distinction between “good” and “bad” casinos. Different bonus offerings mean better match deposits and in some instances even better sign-up offers. Bear in mind that all bonuses come with wagering requirements attached, and this is where players really need to pay attention to the fine print on the site’s terms and conditions.

4. Banking

This is a crucial element, particularly when hunting for a real money online casino. You don’t want to go through all the trouble of signing up, only to discover that your currency is not catered for. A good internet casino will give you a number of speedy and convenient deposit methods, as well as fast withdrawal times. Lastly, you want to know that your financial data and money are safely protected, so make sure that the security protocols adopted by the casino are top-notch so you can play with absolute peace of mind.

5. Client Service

A casino can wow you with its looks, games and promotional offerings, but it can all fall apart spectacularly if the customer support does not match up. The important factors to weigh up in this area are language accessibility; response time on queries; the level of efficiency; and available times and methods for making contact. Tip: Customer reviews are a great tool for evaluating online casinos on their client service performance.

Considerations Before Getting Started

If you are a beginner to the world of online casinos, it's fairly important that you understand a few key aspects which are going to affect your overall gaming experience. 

For example:

  • Registration - do you know you won't be able to trial all casino games if you registered a Free Play account?
  • Welcome bonuses - after deciding between a free spins or deposit match welcome bonus - do you know how wagering requirements will impact your winnings? 
  • Deposit options - do you know which purchase methods offer added bonuses, lower fees and quicker withdrawals?
  • KYC verification documents - do you have these ready to submit? if not, you will not be allowed to withdraw your winnings.

Our advice is to take your time, do your research and you will have a far more rewarding experience.

Casino Games Available Online

The Casino game RouletteRoulette is one of the most popular online casino games for its fast pace and excitement!

A huge factor to consider when choosing an online casino is whether or not they have the online casino games you want to play. Luckily, the good news is that just about any casino game you can think of will be available at any one of our featured international online casino sites. What’s more is that these days online mobile casinos allow you to play from any browser-enabled device including desktop and laptop computers, tablets, Cable TV, mobile phones and even an apple watch.

The popularity of online casino games has really taken off in the past two decades, and the competition in the industry is fierce. With technology evolving on a daily basis, online casinos have to pull out all the stops to offer games of the highest quality and with great incentives to keep players coming back for more. Developers of online casino software are also continuously coming up with different variations of popular games in order to widen the choice available to players.

Popular game categories include:

  • Slots
  • Blackjack
  • Roulette
  • Craps
  • Video Poker
  • Live Dealer

Why use the A2Z Guide

There are many restrictions and regulations regarding online gambling around the world, so your first step when contemplating which online casino to choose is checking that you are allowed to play legally from within your country or state.

Our expert review team has already done this work for you and further vetted the casinos through our online casino reviews that we feature against a number of other important criteria, ensuring that your online casino experience is not only safe and legit, but lucrative and entertaining as well.

Our review team consists of both industry insiders and players who know just about all there is to know about online casino gambling. Unlike many other sites, we put our own money into every review, that way you can be sure of a totally non-biased, free and fair review, each and every time.

We don’t just take a quick look at the online casino to see what they offer, we sign up with each one, paying close attention to each step of the process. We also dig deep and find out as much as we can about the brand, the owners, the terms and conditions and much more. The idea is to save you time and effort when choosing a top online casino.

How we rate UK Online Casinos

Through many years of playing at both offline and online casinos, our team of expert gamblers knows exactly what it takes to be a great casino, particularly when it comes to new online casinos. We have developed a system of rating potential online casinos based on real-time playing, we get our hands dirty digging through every online casino feature, so you don’t have to.

A quick recap of our review checklist to give you a good idea of what you can expect from casinos listed on our site and what boxes they have ticked:

  • Licensing
  • Security
  • Casino Games
  • Casino Software
  • Banking
  • Support
  • Bonuses
  • Industry Compliments to Complaints ratio

Online casinos are regulated in most countries, which means that the casinos are required to hold an online casino license issued by that specific country, in order to permit the acceptance of real money players. In the UK online casinos have been regulated since 2014 which makes gambling online in the UK perfectly legal.


Unbiased review sites such as, usually made up by a team of industry experts with hands-on experience.

As part of the security process when registering an account KYC (Know-Your-Customer) procedures need to be adhered to which include verifying personal and financial information

Virtual casinos cannot offer their guests complimentary drinks etc. as you would find in a physical venue. Casino bonuses are way to compensate for that and ultimately is a marketing tool.

To operate online, all casinos must hold a licence with an established jurisdiction such as Malta or Gibraltar. Such licensed casinos, i.e.99.99% of them, are regulated for fair practice by various regulatory bodies, the most prominent being eCOGRA (eCommerce Online Gaming Regulation and Assurance), who have very strict standards that need to be met.

Online casinos make money on every single transaction that involves a real money wager, regardless of the outcome to the player. This is due to a built in mathematical “house edge” that makes it impossible for players to gain advantage in the long run.

All casinos that are licensed and regulated, such as the ones promote, are 100% safe and secure.

Casino owners are listed entities or private companies that choose the software providers they want to work with. There are usually multiple casino brands (online casinos) owned by a parent entity with each brand offering players a targeted experience like online slots or poker.