I just emailed Boden CS about the fact that the US sale starts before the Uk's and this is what they said:
Thank you for your email.
I am very sorry to hear of your disappointment. I am sorry to tell you that we are unable to start both sales on the same day, as we simply do not have the manpower or facilities in our warehouse to cope with such demand. Also, our US market is much smaller than the UK. Because the US market is so much smaller, there will still be plenty of stock left over by the time we start the UK sale. However, if we ran the sale in the UK first, there would be nothing left at all when we started the US sale.
Furthermore, by running our US sale first, it enables us to trial both our website and warehouse, on a small scale, to ensure we can cope with our larger UK sale. It also gives us enough time to fix any teething problems that we may encounter.
I am sorry for the confusion about the US warehouse. The US warehouse receives its own Mini Boden items, and any US customer returns also go to the US warehouse, but other items are still sent from the UK warehouse.
Once again, I am sorry for the disappointment caused and, if we can be of any more help, please let us know.
Yours sincerely