Further to an earlier post, here's a BBC complaints response recently posted at Biased BBC which (though deserving marks for a nice try with the inventive climbing analogy) fails to successfully refute the charge.
My favourite bit is: "And in this case, Mrs May failed to provide answers to the specific point that was raised. In effect, she fudged the issue. We’re sorry if you feel this showed the BBC was taking a view on the matter...".
I don't know about you but I think that shows the BBC taking a view on the matter too.