Re: Simple solution
"American outlets seem to be able to publish information that has been banned in the UK with impunity"
Banned? What are you referring to, specifically?
If it's D-Notices and private information on royals, that's not 'banned' information, as I recall: It's a gentleman's agreement with the UK press, along the lines of 'Once in a while we ask you not to report something, and in return we give you press releases and play nice with you'.
International press has no such respect for such agreements and is not party to them.