I imagine there are at least a few differences in the legal boundaries for the US military and the UK. I can't speak to the latter, but I stand by my claim about the former.

Here's the most concrete anything I could find [0] about relationships between the US media and any PsyOp personnel, but I don't much care to look very hard. You're welcome to look as well.

[0] - https://en.wikipedia.org/wiki/Psychological_operations_(Unit...