You can, of course. But you may have some latency (lag) issues due to distance between England and United States. Not a big issue, and you should be able to play without any problems.
I'm definetly not the problem here. Maybe if the EUROPEAN server were actually in EUROPE... I live in Slovenia and have attempted to experience Cyrodiil many times, but it always ended similarly to t
Sadly with a guild with users from all over europe experiencing lag at the same time, this has nothing to do with ISP and everything to do with ZOS Servers.