There isn’t one because I checked english speaking countries.
Actually I have been sued for a trademark violation myself (not in this industry and not knowingly, it was actually keyword picked from word tracker) to the tune of a million $ and I did do a lot of homework then.
Fair enough, but the point still stands. If you haven’t registered your trademark in the UK, you can’t claim that gamesandcasino.co.uk is rightfully yours. Ditto gamesandcasino.eu – no EU-registered trademark, no case.
It might be different if your name was unique and unlikely to be duplicated accidentally, but I don’t see how you can claim the rights to the generic name Games and Casino in every English-speaking country in the world, unless you register in each of those countries.
Obviously you know more about it than me given your background so perhaps I’m missing something, but the above seems common-sense to me.
As an example, sex.eu was granted to to Yellow Register On Line because they were the first company with a trademark containgin the word ‘sex’ to register it in the EU. I don’t see sex.com trying to sue them, nor sex.co.uk or sex.de or anyone else for that matter.
It’s highly likely that the owner of gamesandcasino.eu doesn’t have a trademark containing those words, but if you don’t either, it’s first come, first served.