t-mobile UK?
https://bis.eu.blackberry.com/html?brand=tmobileuk
please note, as t-mobile do not sell the storm, it is not guaranteed to work on their network.
I was enquiring about the 8220 that they dont sell and was told I would not be able to get emails on it.
(i dont believe them, as they have the blackberry service, just not the 8220, but there you go)