But they're under BBC. It would make no sense if they opened up somewhere else. BBC provides them with equipment and people. What I was talking about is any random "I want to do a favor to the universe" charity organization.
Yes, they are under BBC, but they do not do charity for Britain. This is an example when it is better to open at home, but for another country. That's how work many charitable foundations.
Yet still, they depend on BBC. If, say, they had to work on behalf of CNN or Fox they'd be US organization.