See typical political bias. Dacre's the editor, and will do the editorial section, and he'll also have a degree of influence on the slant of the paper, but that doesn't mean that what gets reported is lies.
And the Guardian and the independant will do things the same way; they'll follow the editroial slant, and print the stories that follow his beleifs, and like the Mail, they'll put it across in a manner that gets the story out they way that they want to.
So do either of them tell the truth, yes, in a manner; and do either of them tell lies, not sure; but do they twist things, more than likely.
At the end of the day, it's us that are looking for our views to be verified.