Hiya
I think we have been to the same shows a few times - i remember seeing you anyway, especially at Kingswinford? Anyway, Welcome to the forum
I have had hamsters from Holland and the Netherlands and i know of quite a lot of breeders who have had hamsters from different countries too.
I exchanged hamsters with a breeder from the Netherlands in September as we both attended the London Show - so that is a possiblilty at the bigger shows. I also met people at the London Show who had arranged to meet me there to buy hamsters from me.
A few british breeders attend shows in Holland and other countries too, either for jusging or showing etc. - so that is also a possiblilty.
Physically getting the hamsters to and rom different countires isnt really a problem, especially if you or the other person is driving as there are not restrictions - but animals are not allowed on planes (or not in the passenger bit anyway) so that isnt really possible, and some ferry companies have certain restrictions too - but it is possible and does get sone quite often.
The first thing you need to sort out is getting in touch with breeders with good hamsters and then arranging to meet them, or to get the hamster over her.
Tammy x