Reuters also has a history of bad reporting wrt Japan, at least as far as I'm concerned. They often translate things incorrectly and lead with conclusions based on that mistranslation. They are not the only ones on my "usually biased news" list, though. The Japan Times often picks up stories from the Yomiuri Shinbun, which are questionable in nature and translates them. These are then often picked up by the BBC.

What I find interesting, though, is that I don't think it is necessarily editing bias. I think it's actually the opposite: poor editing. What I've found is that when I've found stories that are mistranslated, or which contain seemingly intentionally misleading information, it's actually the same reporters. It is really only a handful of reporters that seem to be responsible for all of the crap news stories. The problem is that the editors seem to let the stories through (possibly because they are money makers???).

I'm not going to name names (of reporters) because my "analysis" is really adhoc and probably also biased. However, I encourage people to look at the by-lines and see if you find any patterns with types of stories and their authors. Don't assume that because it's reported by a reputable news service that the information is correct and unbiased.