Id just like to thank you guys for all your help. I bought and pwned my phone last night, worked great. One thing i had to do which was a little pants, was to download iSim. Seems silly that something similar isnt built in to the phones software.
Weeelll... not really since O2/Apple didnt expect your typical user to be changing SIM cards, so there would be no initial need to export SIM details over.