How did you end up signing up at these rogues? Since you are in the UK, you have the creme of the crop to choose from generally speaking. Euromoon and its shitty offspring are infamous for using cheating software. It's been widely reported on. Furthermore, they are prohibited to take UK players since they have no UKGC license.
You need to complain to the UKGC today about this. This casino group needs to be shut down for good.
They are also sending spam to UK email addresses, either deliberately or through neglect. This is another way they would be able to attract UK traffic, and being the rogues they are, they will allow UK players to register even if they put "UK" as their country. Neteller will block deposits, but cards will mostly work.
A good many unlicensed casinos are using the internet and email to market to players, and if they don't block UK players, it's unlikely many UK players will know about the licensing situation, because they ARE licensed, and have all the details on their website, so even if a UK player is looking for signs of credibility, they will see that there is a license, and that if they click through to check it comes up as valid. Most new players have little idea of the legal complexities, and that the UK has a somewhat unusual system of requiring TWO licenses, one primary, and a secondary UK specific one.
Of course, all this can be expected from a casino prepared to use pirated games, and no doubt they would have discovered the self exclusion had they been asked to pay out winnings.
The UKGC do have a system for gathering "intelligence", namely reports from UK players that an unlicensed casino has been taking bets from UK players. They are monitoring the situation to see if it's a problem sufficiently widespread to need further action, such as requiring banks to block card transactions, or even using the current system for blocking sites like Pirate Bay by court order to block the sites of unlicensed casinos known to be taking UK players.
The UKGC also place some responsibility on game providers, so if an unlicensed casino is providing games from a UK licensed game provider to UK players, it will be a black mark against the game provider and may threaten it's UK game provision license. This is why most unlicensed casinos tend to offer games from providers that don't have a UK license that will be put at risk.