Why are fantasy world accents British?

[Nerwen]

Originally Posted by Morthoron

Robin Hood is a bit different, in that it is an English legend; therefore Costner's Midwestern American accent was off (as was his wooden acting). Of course, it could've been worse. You could have had Joe Pesci's New Jersey accent.

It didn't help that, as I recall, his first line was something like "I need English courage now", which really did sound quite funny.

Of course, to echo narrforc's point, the "real" Robin Hood ( if there was such person) wouldn't have had anything like a modern British accent– or even have been speaking modern English. And yet, that kind of thing can indeed be jarring. Perhaps it's that *some* American accents already carry strong associations of their own for most viewers. I mean, if someone looks medieval but sounds like a cowboy, that pretty much does it for suspension of disbelief...