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Casino SitesSelecting the best casino sites, it is becoming more and more difficult as there are so many out there that, especially beginners, are getting a bit confused between the best operators and the average, poor or even rogue ones. For this reason, CasinoBiggestBonus.com is here as we have a team of online casino sites experts that have been working really hard to review and carefully selected only the best online casinos so that you can be sure you will be in good hands.

To evaluate casino sites, you need to consider some critical variants like for example site security, license, games quality, games numbers, casino bonuses, the software powering the casino and lots more.

The casino sites below are the ones that have outscored all the rest at this current time. Please also take a look at our comprehensive casino bonus list where you will find a full list of the top casino sites.

Top Online Casino Sites

Best Casino Bonus, 18+Only, begambleaware.org
Get 10 Free Spins NO Deposit + 100% Up to £200 On First Deposit - BGO Casino
*18+. New customers only. 10 Free Spins on registration and mobile verification (UK ONLY) 100% deposit match up to £200/$300. Available on selected Games only. 7-day expiry on Bonus. 40x wagering (max bet £/$5) before Bonus Balance can be withdrawn. Wagering is with real money first. Game contribution weightings apply to wagering requirements. £/$10 min deposit + 2.5% fee (min 50p/75c). Not available using Neteller or Skrill. Cash balance withdrawable anytime + £2.50/$3.75 fee. Full T&C apply.
SUPERCASINO - 100% Welcome Bonus Up to £200
First deposit only, Min first deposit £10, 100% bonus match to max £200, 25x wagering deposit and bonus, 30 day bonus expiry, Contribution to wagering reqs varies by game, Further eligibility and terms apply.
£100 Bonus Cash & 200 Free Spins - Mr Green
New players only. 18+. 35x wagering applies to Bonus Cash and Free Spins. Deposit of £20+ unlocks a 100% Match Bonus up to £100 in Bonus Cash, subsequent wager of £20+ on slots unlocks 100 Starburst Free Spins and 100 additional Free Spins (5 per day over 20 days). BeGambleAware.org.
Deposit £100 Play with £200 + 100 Spins on Starbursts - Pots Of Luck
New players only. Selected slots only. Min deposit £10, Max Bonus £100 + 100 bonus spins on Starburst, 30x wagering (dep+bonus), 4x conversion. T&Cs Apply.

Casino Sites Software

One of the most important things to check when looking at casino sites is the software platforms that are powering the online casinos. Operators are not creating the games, but they are relying on leading software developers companies like NetEnt, Microgaming, Playtech that will supply the casino games to the best casino sites.

All the best online casino sites like Coral rely on those companies, and the results are great: with the best operators you can either use an instant flash version on your computer or mobile devices or select a downloaded version where you have in some cases more than 500 games available. If you decide to play instantly via your web or mobile browser, you will still have access to more than 300 games with the best casinos sites.

So all the top casino sites are now able to provide different types of services which are fully supported by the most popular computer operating systems: regardless if you are using a Windows, Linux, Mac, Iphone and Android you should be able to access a vast breadth of games in the way you want.

Casino Sites Game Selection

The competition has pushed casino sites to provide a great variety of games which should ensure players never gets bored. If you are used to playing on land-based casinos, you will see that online you have access to a significantly bigger games library. Even if you usually play traditional casino games like online slots, blackjack, baccarat, roulette and so on, you will see that on the best casino sites there are multiple variants of those classics to keep everything fresh for longer.

Even if you usually play with the same casino game, you should still select a casino site that has a vast array of games available as this is a clear sign that they are doing things in the right way and investing with the best games providers.

Casino Sites Other Products

Considering the competition that there is between different casino sites, having just a casino website it is not enough. Nowadays players expect that they can play their favourite casino games also on the go with their mobile phones. Also, some players might not feel that virtual games are realistic enough and they want more. A good casino site nowadays has to be able to offer a fully fledged live casino section that will have immersive features so that the gambler will feel as he is a land-based casino without even leaving the comfort of their home.

All the top casino sites we have selected have great live dealer sections where you will not only be able to challenge yourself in a realistic scenario, but you will also be able to interact via chat with other players or the dealer itself.

Casino Sites Sign Up Bonus

One of the greatest things of signing up to a casino site is that you can get plenty of welcome bonus offers. The competition is fierce between operators, and this means that they have to go the extra mile regarding promotions so that they can stand out and attract new players. Casino Sites Welcome Deposit Bonuses usually are very generous, but you need to make sure you are comfortable with the fine print to understand their value.

Casino Sites Security and Support

All the casino sites that we are listing at CasinoBiggestBonus.com are fully regulated by the UK Gambling Commission and are continuously tested for security. This means that when you are depositing and withdrawing your money will be completely safe. Furthermore, all your personal and financial data will be encrypted with the latest technology to allow that any third party will be able to get hold and use that private information. We suggest you never sign up to a casino that is not regulated and licensed in the UK as if something will happen to either your money or data you will have no guarantees.

You might need to get in touch with the casino sites customer support. The best casino sites allow you to contact support agents anytime (24/7) either via e-mail, phone or live chat. Live chat functionality is excellent as you will receive answers to your queries immediately. We have also tested customer support of all the casino sites we have listed, and we can certify that support agents are well prepared and can answer all your queries very quickly.


So there are several things you need to consider when opening a new casino account with an operator. The most important thing is to check that the casino site is fully licensed so that all your personal and financial data will be safe: if for some reason the casino site will go bankrupt you will have the back up of the UK Gambling Commission in regards to your funds. Similarly, if there is a significant data breach in any of the licensed casino.

Remember to look for the best casino sites welcome offers. All the best operators will offer you a valuable welcome bonus, and you should take advantage as this gives you a chance to try their products and also to win without risking much. Make sure you are always checking the terms and conditions before starting to take advantage of the offer: most casino bonuses come with wagering requirements and to avoid disappointments later down the line it is essential you are comfortable with those before starting to play.