the gym nast nasticks national team is taking place this weekend. the last great contest before the games themselves. i've talked with star nastia liukin in just a moment. but first let's get to preparations under way back in london. days after the jubilee, the city is working around the clock to get ready. let's start with richard quest, who is at the heart of things. richard? >> reporter: piers, barely have we got over the excitement of the jubilee and finally dried out. and now get ready for the olympics in 49 days' time. 10,500 athletes from more than 200 countries will be arriving in the british capital. the olympic torch is north of the border in scotland, making its way around. glasgow. and when all is said and done and the games are over, the british will have spent the best part of $40 billion hosting the games. tidying up now 30 or so olympic venues, making sure the city is spruced up and clean, ready for 5 million visitors. and who knows, piers, we may even manage to turn our boat round on the thames. >> they should make an olympic sport