A U.S. JD is the most portable credential an aspiring international lawyer can obtain, short of a post-JD LL.M. I'd look into a U.S. law school with a well-established international reputation and/or joint degree program (Columbia and Cornell come to mind). A US law degree will give ou the freedom to range throughout Europe and the globe. Even the best UK degree is much less mobile.
Actually, it's not that I definitely want to work in NY or North America for that matter. Europe is where I want to end up in (I grew up there). I just wanted to 'keep my options open'. So yeah, it's the OTHER WAY AROUND.