Can you add the NOW tv app onto the new 2022 Apple 4k tv box

Yes. You can download it from the Apple Tv's App Store directly. https://apps.apple.com/gb/app/now/id512266300?platform=appleTV

Gino0412 wrote:

Can you have a UK TV Guide app on the Apple TV 2022

Yes: https://apps.apple.com/gb/app/tvguide-co-uk-tv-guide/id317212648?platform=appleTV

If your iTunes/App Store account is based out of the UK, yes.