Get a flight and put them in your hand luggage!
Just found out a good friend of mine is going out to the city where they are in a few weeks, would it be horrendously expensive to bring them back as extra luggage? Or would he be better off sending them back separately?
I imported some SSR wheels from the States (CA) last year, and paid ~ £200 - £250 shipping.
They took ~2 weeks to arrive IIRC. Deffinately worth doing if said wheels are hard to pick up in the UK, or you can grab a bargain.