By the way, I'm no expert but bringing them from UK moght not be a good idea.  I think the local Vieros tend to sell varieties that do well here which might not be the case for all UK varieties.  Don't know if there's any restrictions on importing plants ?
One thing I've found out from experience is that citrus don't like being exposed to cold winds.[/quote]
Bringing trees legally from the uk are treated the same as dogs- you need a certificate for each one to prove they are non-diseased. Not sure how you go on with catalogue ordering from Hollandthough- some folk have done it that . Others have sneaked them in and amongst their belongings , but you run the risk of being caught. Besides local are best as they climatised. Oranges are replanted every 7 to 10 years so high maintenance. good luck! :-/