It's interesting that some American advertising agencies and television documentary programs have decided that having the message narrated by someone with a pronounced English accent will give it more... panache? Credibility?.... *shrug* (no one still knows what accent that GEICO gecko is supposed to be)

And if they can find someone with really jolly, eccentric delivery where every phrase is emphasized like they were chewing toffee and trying to read Chaucer simultaneously, all the better.