Call them up and ask, the US vpost never liked oversize stuff that couldn't be repacked into the standard sizes but not used the European 1. if not try other freight forwarders. Make sure you claim the VAT back it is something like 20% over there. Should go somecway towards covering the Shipping costs which won't be cheap for an assembled bike.

best option may be to get a cheap flight spend a week Cycling round the countryside or go and watch the tour de Yorkshire and bring it back hand carry. Get something for your money