I read an article that did a study (N. Coupland and H. Bishop) in the UK to see which "British" accent is the favorite. They overwhelming chose the "Queen's English" as the most appealing accent. The "Queen's English" is also called Received Pronunciation (RP), which is typically what English Teachers learn if they learn English as a Second Language to teach it. (Hope that makes sense.)
To add to it, in Norway (another study - U. Rindal), a small group of Norwegian learners of English agree that RP is the favorite over General America (GA). They see RP as sounding more intelligent and more adult-ish. However, they prefer GA for informal settings with their friends. It's a very interesting study. I believe there is this tug-and-pull affect between the two giants in the English standard accent world because of, not only what the majority of English teachers are teaching...RP..., but that they have a lot of exposure to the American accent through their media. I live in Sweden for a year and the radio, theater, and tv were all bombarded with America! They were coated with it. So for social settings, the Norwegian teens preferred GA, but the preferred RP for basically everything else.