Heretical Sound wrote...
Aha a valid point you make however slight difference. Within England you have loads of accents in which case English refers to all of them. However for simplicity sake English is sufficient. Same with American, Australian, South African etc. I wouldn't expect a foreigner to be able to recognise a West Country accent or a Yorkshire accent. And hopefully you don't expect me to recognise the numerous accents that exist in each of the anglophone countries. However Wales, Scotland and Northern Ireland with their respective accents are distinctive enough and have their own languages. It'd be like me saying a Canadian or Mexican has a North American accent. Technically correct but a bit silly:wizard:.
There are indeed many English accents. For voiceover purposes we use what is called RP (Received Pronunciation) unless we are going for a specific sound like cockney or West Country. RP's the easiest because this is what most British actors are trained to use, though most of them can switch between several dialects at will.
For American accents, the midwest accent is used as a standard simply because it's viewed by North Americans as being "accent-less"-- there's no regional association as it is in the American South, New England and other places. It's the American equivalent of RP.
Going for other accents can be difficult, primarily because we only get these differences in English recording (they don't get Polish VO actors doing Orlesian characters to speak with a French accent in the Polish localization, for instance) and thus if we want authentic accents we have to go to non-native speakers. This can sometimes affect the acting (as often happens when someone needs to focus on an accent they don't do naturally), and has limited value with North American audiences as many people seem to think accents sound "fake" even when they're completely authentic. Why, I don't know. Personally I would have gone for a different accent with the dwarves (initially we wanted German) but it didn't work for the reasons I describe, not to mention that mainland European voiceover actors are a bit less numerous and thus much more expensive to use.
But there you have it in a nutshell.