BMW does all of this for you. You get 14 days of insurance and special plates. Once your done you turn it in to a select bmw location and they then ship it to you. I see a location in London and would try to use that. I can only leave the jack and spare tire in the car anything else like the manual and floor mats must be taken by the buyer back to the US. The car then gets to you in about a month
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Chad