The most trusted news source... The only major news source that is more trusted than distrusted across the ideological spectrum is ... The Wall Street Journal.
These are U.S. news sources and U.S. citizens only. I note they leave libertarians out of the ideological mix (their numbers are small), but I'd expect the results to be the same.
It's interesting to ponder both the depth and the consistency of the inferred ideological bias across these news sources. Only The Economist, the BBC, and a highly filtered aggregator (Google News) are perceived as being relatively biased. The rest are perceived as sharply biased, with the majority being perceived as biased toward liberals.
I'd love to see something like this for the British press. Their unabashed biases are, to me at least, refreshing and interesting. Nobody their pretends to be biased, but behaves otherwise – their media are firmly for one side or the other (and there's a good mix) and they make no bones about it...