Can the French muscle in on 2012?
The Government and 2012 are always telling us that the whole of Britain will benefit from the Olympics because there will be pre-Games training camps for international teams across the UK.
But there are no guarantees this will happen across the country. I've been in the Calais region this week and the French are working very hard to attract teams too.
And why not? Calais is just an hour by train from central London and I visited excellent failicites for gymnastics, canoeing, basketball and handball. Dominique Dupilet, the head of the Pas-de Calais council, says he's already signed deals with around 10 teams already.
And, listen to this! He told me that Calais will benefit more from London hosting the Games than if Paris had won.
This is because, he says, the French always look south when it comes to promoting cities. Calais would probably not have got a look-in if Paris had lived up to their pre-vote billing as favourites in 2005.
There's been a Union Jack in Dupilet's office since London won the vote and -- remarkably -- he says the region is pretty much an English region anyway.
There is no doubt that mainland Europe has the serious potential to snatch away some teams from the UK. Firstly, because there are excellent facilities in France and Germany which international teams have used before ahead of major events.
And, if you are travelling from the other side of the world, an extra hour or so's flight to London from Stuttgart or Brussels is hardly a problem.
Some teams may also fancy the idea of a quieter life away from Britain in the last few weeks before the Games when Olympic fever will be intense.
This isn't new, by the way. Just before the 1992 Barcelona Olympics, I went to visit the American athletics and swimming teams in their pre-Games training camps.
They were staying in Narbonne -- in France!