Bonjour de Paris!

Hi everybody, I am new to this forum and have a query about the mini cooper I ordered at the start of May. My dealer promised delivery for the end of July. My concern is that they are due to start producing minis in the Netherlands in the summer. I am keen that my mini should come from Oxford rather than Born. My dealer has been very coy about the whole process and claims that they have no way of knowing the origin of the cars they deliver. I find this hard to believe. Does anyone have any more information about when exactly production is due to start at Nedcar and if there is any way of identifying which cars come from which factory? Thanks.