I never watch BBC news, nor, with the exception of "This Week", its political commentary programs, preferring the slightly more objective reporting on Sky.
The BBC's bias is not on the whole conscious: it's based on the presumption that its own world view - and it has one - is self-evidently right and that disagreement with that view is a sign either of intellectual weakness or moral taint (even if half the population is on the "wrong" side as in Brexit).
It's a bias which extends beyond its reporting remit into all its cultural and "entertainment" offerings. The BBC feels it has a moral duty to improve the nation. In that respect it shares the mission of its first Director General, except that what is being offered as "improvement" is very different from anything Lord Reith would have recognised as virtue.
I'm currently watching the first showing of "Ranganation" because I am doing an Open University course on the effect of popular culture on shaping moral attitudes (I lie about the course. It's actually the role of the trans-gender/climate change/vegan alliance in overting the patriarchy.). This is a burden I'm forced to carry as a diligent researcher and disinterested student. That's a quality, of course, which makes me unique in the world of the social sciences, whether we're talking teachers or students.