Ranking the best international online casinos for UK gamblers

The proliferation of international online casino has made the process of betting and winning big more accessible. However, virtual gaming platforms also operate based on rules created by regulators. UK casinos are regulated by the requirements of the UKGC licensee. The rules regarding gambling set by the regulator are spelled out on the Gambling Commission website. However, UK gamblers are not prohibited from betting at casinos with a license from another jurisdiction. Because of this, many UK players choose the aforementioned international online casinos. On such sites, as a rule, more favorable conditions are created, generous bonuses are offered. Let’s analyze what are the differences between casinos not in Gamstop and operators with a UKGC license, as well as compile the top 5 best international online casinos.

What international casinos are

International casinos are designed for users from different countries. As a rule, such operators are characterized by the following features:

  • Their activities are conducted on the basis of licenses from independent regulators or permission from Curacao e-Gaming;
  • An extensive list of slots on different themes is offered due to the absence of strict requirements to the software (at the same time, only licensed machines based on the random symbol generation system are used);
  • A wide range of tools for money transactions;
  • International casinos offer favorable conditions for players from different countries, including the UK.

Difference between casinos with GamStop and casinos non GamStop

The type of license has an impact on casino development. In particular, the regulator UKGC sets a number of requirements for operators. British casinos are obliged to connect to the GamStop service, which provides self-blocking users on the sites of all connected operators. The regulator also imposes requirements for the registration process, presented on the site gaming software, the size of bets, bonus program and so on. Due to all these restrictions, many users prefer to bet in international casinos. In this case, gambling is available even with self-blocking.

The GamStop service is aimed at protecting against the development of gambling addiction. However, as statistics show, its effectiveness is not so great. At the same time, the sites of international casinos also adopted a policy of responsible gaming. It involves the possibility of setting limits on the size of bets, losses, deposits, as well as freezing the account on the site. For this, as a rule, it is enough to contact the support service.

Criteria for choosing the best international casinos

The experts at GamblingSites.com believe that a number of criteria should be used to rank the best casinos for UK gamblers. The following factors are taken into account when compiling the TOP:

  • Licence – the rating includes only licensed online casinos, in the absence of permission from the regulator, betting is strictly not recommended. In this case, the quality of the software, as well as the withdrawal of winnings is not guaranteed;
  • Assortment of gaming software – the greater the selection of slot machines on the site, the higher the likelihood that each gambler will find a slot to bet on. International casinos often feature reel slots, jackpot machines, megaways, table games, and live dealers;
  • Bonus programme – online casino sites with GamStop most often offer fairly modest bonuses, no-deposit bonuses are rarely offered. International casino sites usually offer generous bonuses. Bonus policy involves welcome gifts (deposit and non-deposit), promotions for regular users, cashback, reload bonuses and so on. At the same time, not only the size of bonuses, but also the wagering rules (the size of the wager, the duration of the active period) are subject to evaluation;
  • The list of available tools for conducting monetary transactions. As a rule, in international casinos the list is quite extensive, you can use credit and debit cards, e-wallets, cryptocurrencies and so on to deposit and withdraw funds;
  • Speed of conducting the withdrawal of winnings – in most casinos it takes from 1 to 3 days.

Top 5 best international online casinos

We offer our own ranking of the best international casinos.

1st place: Fortune Clock Casino

Fortune Clock Casino is a gaming platform operating under a Curaçao licence. It provides its services to players from different countries, including British gamblers. The operator’s website is cross-platform, which allows you to bet from any device.

Fortune Clock Casino offers its users a fairly extensive collection of slots. On the site, users are waiting for machines from providers:

  • BooonGo;
  • Evolution Gaming;
  • Pragmatic Play;
  • Microgaming and many others.

The catalogue includes regular reel slots, machines with jackpots, and the possibility of buying bonuses, as well as machines with roulette and card games. Additionally, registered users have the opportunity to play at tables with Live dealers, as well as bet on sporting events.

Fortune Clock Casino has a bonus policy with large rewards. The rewards are designed for players betting on slots, as well as bettors betting on sporting events. Welcome deposit bonuses are offered to players:

  • in the amount of 100% of the deposit and 20 freespins when depositing 50 euros or more;  
  • 75% of the deposit and 15 freespins when depositing EUR 70 or more; 
  • 50% of the deposit and 10 freespins for refills of €135 or more.

For bettors and players who bet on cyber sports, 100% of the transaction is offered on a deposit of €20. In addition to deposit promotions, there are a variety of promotions, lotteries and tournament competitions.

For money transactions at Fortune Clock Casino you can use credit and debit cards Visa, MasterCard, as well as cryptocurrency wallets Tether, Bitcoin. Withdrawal of funds takes up to 72 hours.

2nd place: Sweety Win Casino

Sweety Win virtual casino is based on the Curacao licence. The authorisation from the regulator guarantees the quality of the software presented on the site. The catalogue contains a variety of slot machines from leading providers, among the most popular Book Of Riches Deluxe, Quest of Gods, Fruit Cocktail, Crazy Monkey, Bone Bonanza. In addition to reel slots, there are machines with floor games (roulette, poker, baccarat and so on). In a separate category are games with live dealers. In this case, players bet against real croupiers. In addition, Sweety Win Casino offers its customers betting on sports, cyber sports. The site has various promotions, tournaments and lotteries. Welcome promotions are offered in the catalogue:

  • first transaction gets 10% of the transaction and 10 freespins;
  • the second transaction receives 10% of the transaction and 10 Freespins for Candy Monsta slot;
  • third transaction receives 15% of the transaction and 30 freespins for Miss Cherry Fruits slot;
  • the fourth transaction receives 15% of the transaction and 75 freespins for Platinum Lightning slot;

Additionally, tournament competitions and lottery drawings are organised for registered users. For money transactions it is possible to use Visa, MasterCard, as well as cryptocurrency wallets Tether, Bitcoin. Withdrawal of winnings takes from 24 to 48 hours.

3rd place: Kaboom Slots Casino

Kaboom Slots is a virtual casino operating since 2022. The operator operates on the basis of a licence from the regulator Curacao e-Gaming. The authorisation is a guarantee of the quality of the software presented on the site, as well as the transparency of the gaming process. The collection includes machines from Endorphina, Thunderkick, Amigo Gaming, Evolution Gaming and so on. Slots with reels, table machines (with roulette, card games) are presented in the game room. The site has a special section with Live Show, it contains games with live dealers. Also, the casino provides an opportunity to bet on sports, cyber sports.

There are promotions with bonuses on the site. Welcome incentives apply to the first few deposits:

  • For the first transaction, a 175% bonus applies to top-ups of €50 or more;
  • for the second transaction there is a 150% bonus for a top-up of 100 euros or more;
  • for the third transaction there is a 125% bonus for a top-up of 200 euros or more.

Additionally, tournaments and lottery drawings with large prize funds are organised for players. Deposits and withdrawals can be made via Visa, MasterCard credit and debit cards and cryptocurrency wallets.

4th place: SuperCat Casino

SuperCat Casino also operates under a Curaçao licence. Users have access to slot machines from leading providers on the site. In the “Games” section, popular slots include Book Of X-Mas, Solar Queen, Mice & Magic Wonder Spin and many others. Registered users can play for money in reel slots, machines with jackpots, table games. Additionally, the casino offers a separate section with live games. The operator offers its players quite generous bonuses, among them:

  • welcome gift of 30 freespins for Miss Cherry Fruits slot for deposits of €10 or more, promotion available within the first 168 hours after creating a profile;
  • 100% of the second deposit of at least €25, available within the first 192 hours after creating a profile;
  • 50 freespins for Four Lucky Diamonds slot for deposits of €30 or more, available within the first 216 hours of creating a profile;
  • 50% on deposits of at least €50, available within the first 240 hours of creating a profile;
  • 70 freespins for Lucky Dama Muerta slot for deposits of €100 or more, available within the first 240 hours of creating a profile.

The bonus policy of the casino is designed not only for newcomers, but also for regular users. For them there are also deposit promotions, as well as tournaments and lotteries. The largest tournament is Leaderboard. It is won by the players who have gained the most points for the calculation period (month). You can get them by participating in tournaments, lotteries, making deposits and so on. Large cash prizes and valuable gifts await the winners of the Leaderboard.

5th place: Agent No Wager Casino

Agent No Wager Casino is an operator with a licence from the regulator Curaçao, accepting players from different countries, including the UK. On the site of the virtual casino you can bet in slots from well-known providers. The collection includes table games, reel slots from such developers as BooonGo, Evoplay, Gamzix, Vivo Gaming, Red Rake and others. Agent No Wager is not only a casino, but also a bookmaker. On the operator’s website there is an opportunity to bet on sports and cyber sports with favourable odds.

Agent No Wager Casino offers quite a generous bonus policy for players. The welcome package includes:

  • 10% bonus on the first deposit of €50 or more;
  • 12% bonus on the second deposit of €300 or more;
  • 15% bonus on the third deposit of €500 or more.

For bettors betting on sports and cybersports, there is a deposit promotion with incentives and 10% of the transaction.

The peculiarity of Agent No Wager Casino lies in the particularly low wagering odds – only x1. Additionally, lotteries and tournaments are constantly organised for registered users.


Any casino included in the rating is ready to offer its users the most favourable conditions. All operators operate on the basis of licences, which means that they are legal in the UK. At the same time, they are not included in the GamStop service, which allows users to bet even after self-blocking. A variety of slots and large bonuses are waiting for users on the sites of international casinos. All you need to do is to register, make your first deposit and you can start getting your first prizes.

You don't have permission to register