Would you be eligible for health care in england? That could turn out to be usefull someday, though hopefully you'll never be in a position that you'd need it.

The other thing to consider might be tax disadvantages. I assume you're not liable for income tax to both countries, but you never know. Wasn't there some musician/singer who couldn't go back to england because he wouldn't pay them tax on his (quite large) earnings from abroad?

Matthew