The BBC in the UK and BBC America are pretty much separate corporations. BBC America is a commercial and subscription-supported channel. It does now co-produce DW so I guess it does have a say though.Is their a difference though between BBC and BBC America were I watched the show. I also wonder if the fact that I think the show must place more importance on expanding it's brand in other countries impacts how it does things. I think I recall hearing in the past that the show was putting to much importance on trying to win over a American audience by some fans. We do see these days how tv and movies do put more importance on international audiences than they did in the past but I don't know if that is more of a Hollywood thing or something common everywhere. Also how does it do in China? That seems to be the untapped market everyone is going after these days at least with movies and I know Disney is proably frustrated that "Star Wars" never sales over there for reasons I don't understand.
Re Star Wars, the Chinese censors removed all references to the Force from the original trilogy, I believe. They also place quite severe limits on the amount of foreign-originated TV and cinema that can be shown in China.