[Scratch_Perry]

So is this a new arrangement? WNA has been broadcast in the UK before. It was regularly repeated late night on the News Channel in the late 2000s & early 2010s, and even now, if the Ten is delayed for whatever reason, WNA will be shown in the UK instead.
So WNA is definitely not banned from being broadcast in the UK.

Expect to see a fair bit of World News America broadcast in the UK next summer when the Euro 2024 football championships are on and BBC are showing the 8pm (UK time) game, meaning the 10 will default to 10.15 or 10.30pm (or even later in knockout games, with the provision for extra time and penalties).