There is no special factory for UK retailers, supply issues is the same globally.
Also are you trying to say that they dont even know what they buying the parts for yet?, That to me is not a way to do business, there would be some inclination from intel what purchase cost is else pre orders could not be taken without knowing your own costs.
Sorry its just gouging. There is a way to hide it more effectively which is to at least not gouge to the point that someone could buy from an american retailer and then undercut the UK market using american retailers as wholesalers. I could buy chips from america and sell them for £550 and be making a profit, whilst undercutting the retailers here by £50. Thats just embarrassing.