Do the Vor have accents? Cordelia's accent is described as "flat"--how would you characterise it in terms of the current world (Mid-west American?)
Lois McMaster Bujold Everybody has accents; the Vor are no exception. That should be in the plural, of course, given all the different regions and language groups on the planet. Some accents would be more associated with high status or places of origin than others, and thus aped, and whatever the BBC uses most would tend to spread. Barrayarans don't have quite the mania for placing/pegging each other by their voices as do the Brits, but they come close.
The Vorkosigan family accent runs to something like "British actor doing stage Russian accent".