Hi mate, got your PM, but thought I would post up here. I would say your quickest route would be through SRB for a new one.... Unfortunatly Dan gets them via Sea freight so it does take a few months.. Dont know why he cant get Air Freight if your willing to pay? They generally make these to order and only do runs when they have enough... Dan @ SRB is the main importer for the UK...
But! I do know there are a few available on my350z.com that are used. Weather or not they will ship a big item to the UK I dont know.
Adam and the others US dealers will be ordering, delivered to the states then shipping over here so more tax to pay at each turn!
Anyway, good luck, its a great looking bit of kit... Not that I know.... Well not till tomorrow!!