http://vgmdb.net/album/5059 "This is the European version of the Kingdom Hearts Original Soundtrack. It is identical with the japanese release with the exception that the japanese songs are replaced with their english counterparts."
Couldn’t find an entry in VGMDB for KH2 european release, but I’m certain there had to be one. As for KH 1.5+2.5, I think SQE Shop sells imports.