I can't speak with complete authority, but it is very common for 'USA exclusives' to be shipped to UK from USA, strange though this might seem. In bulk, to a dealer, it doesn't cost a huge amount more than if shipped to UK direct - certainly less per car than if you or I do it as a private individual from a USA store.
In the case of several Carrera models, I can confirm as a fact, that several of the special editions came to UK from both Continental Europe AND from USA.
In the case of several Carrera models, I can confirm as a fact, that several of the special editions came to UK from both Continental Europe AND from USA.