[Lalwendë]

I have to admit, I think it was the right thing to do when Peter Jackson chose to have his actors use 'broadly' British accents in the LotR films, given that Tolkien himself was British and wrote so much about the development of the English language within this country. It would have been very peculiar to use other accents. I say 'broadly' as not all of them were delivered perfectly and some did sound a tad strangled. And I still find it strange that Pippin, Sam and Frodo all had different accents.

The article mentions A Game Of Thrones (and incorrectly states that the TV series was made for Americans - I suspect not that many have HBO as it's expensive and it was watched just as widely elsewhere) which is slightly different. There was no real reason for that series to feature British accents for the people of Westeros and they could have chosen anything, yet they managed to go even further than Peter Jackson did and have regional accents (one or two examples like Samwell and Sansa aside...).

I wonder if it is like narfforc says, and British accents still have some cachet of being 'old' and more fitting to a faux historic setting?

As for American accents being closer to older British accents, I think there's a Bill Bryson book which has a section about this and I'll have to dig it out. He once wrote about some areas around Chesapeake (islands off the coast...I think) where the locals had accents very similar to Shakesperean English, and about areas in Michigan which had lots of Cornish immigrants and retained some of the culture.