During Christmas all the stores and show-windows are very nicely and accurately decorated. And in London, it was even more than anywhere else I've been. That's why I couldn't avoid taking pictures of everything, although I felt kind of embarrassed to be warned by the shop assistant several times.
Yes, you can find ABSOLUTELY everything in those shops and markets.
This is a restaurant which I loved so much: Yo! Sushi You can find several of them in all the city.