All I need to know is what countries are things available, why is that so hard?
p.s.: it seems this service is expanding, is going to be available 100 (unnamed) countries https://9to5mac.com/2019/03/25/apple-tv-app-upgrade-subscriptions/
That wasn’t reported on this site though was it, and those services announced are US only and always have been.
So all we will get in the UK is a new interface.... with the same old offerings it already has.