I live in Korea, have been on Bard's waitlist, and have been using it since last week with no problems.

It wasn't opened in MX until their expo but working here now. I think the EU countries just scare google because they keep getting sued for violating their data protection laws

The previous beta was open to UK as I've had access since they released it a while ago - so can't say if it's fully open to UK now or not, but probably.