Yet still, they depend on BBC. If, say, they had to work on behalf of CNN or Fox they'd be US organization.
Yes, but at the same time, they do not collect money for charity in Britain! British organizers are in Britain. And they collect money not for children in Britain, but for children in Africa just because it is more profitable in this period of time. Also any charitable organization brings a income to the organizers.

Exactly my point. They opened up in a place where it's easy to maintain and operate an organization and where their suppliers are.