FWIW Bryan and I are on the same page on this, except I (of course) have footnotes.
IMHO this business about "illegal bets" is a bit rubbish. It's not
illegal if the casino is based and licensed outside the UK regardless of what the UKGC may say. It can certainly be said to be
unethical since the UKGC clearly wants everyone everywhere in the world to respect their jurisdiction over UK players but UK laws are not universal and neither is the UKGC.
To the best of my knowledge no offshore casino has ever been taken to court and successfully charged with accepting UK players. There's a good reason for that: UK laws end at UK borders, unless the UK and whichever other country is involved agree otherwise. So what we're really talking about here is ethics and yes, I'd say we generally do believe that good casinos will respect the UKGC's jurisdiction and not chase UK players. But as Bryan said, not our job to police that.
That gets your knickers in a twist? C'est la vie I guess, but take a moment and look around the world at countless other industries that have "special" licensing jurisdictions so they can operate in an environment more to their liking, and effectively avoid the laws of other countries. No one seriously rails against the oil industry for doing it, or offshore manufacturing, or farming or whatever else. Hell, half the reason the UK left the EU was so they could make their own decisions (meaning laws) about stuff they said they cared deeply about. So I'd say putting it in perspective is probably worthwhile here.
@dmr , IMO the rep avoided answering your question(s) because he had better things to do than school you on ... well, on pretty much what I've just done. Take it or leave it but your "illegal bets" argument is pretty thin grounds for harassing the casino. If you'd brought that to me as a PAB I would have told you what I tell anyone who brings that argument to me: "sure, I'll take it to them but not as a case of breaking laws that have no jurisdiction over them but as a case of failing to do the right thing". Very, VERY different circumstances. And you can imagine how many casinos say "ooops, our bad" and change the way they do things re UK players. Some do, especially if they suddenly discover they have something to lose if they don't, but not many.