What's France's 7th biggest city?

My father occasionally sends me articles highlighting the fact that life over the Atlantic isn't always a bed of roses - and Europe is actually a pretty cool place to live.

His most recent one was a glowing article about London, which Jasper Gerard says has eclipsed New York as the cultural, financial and fashionable capital of the world.

One thing about this article amazed me.

Over in France, Nicholas Sarkozy is gearing up for the push to become the next president of France. And London was one of the major destinations on his campaign trail.

Because, amazingly, the number of young French professionals living in London makes it technically the seventh largest French city.