Apple TV - App Accessibility in US and UK

Hello everyone,

I travel between the USA and the UK and I'm considering buying the latest Apple TV to take with me when I travel.

Will I be able to download apps from both the US and the UK? For instance, can I download US apps like Tubi and Pluto, as well as UK apps like Channel 4 and BBC iPlayer?

I'm asking because my iPhone is set to the US region, and I can't download both BBC iplayer or Channel 4 and if it's not possible then it will be a deal breaker for me :-(