Another excellent BBC music docu: www.bbc.co.uk/iplayer/episode/b013g87k/A..._Invaded_the_Charts/

Interesting that they talk of "invading". Kinda paranoid, but maybe I'm reading too much into it. Rather predictably, the show to which you link cannot be seen outside the UK.

I'm struggling to think of a country other than the US with a substantial chart presence in the UK. Demis Roussos and 2 Unlimited were both a long time ago now. David Guetta is in the charts, and there are the occasional Scandic productions. But I'd hardly call that "the world". And when was the last chart single that was not in English?