There have been two issues in the past ten years that have proved to be incredibly divisive in this country, namely our membership of the EU and Immigration/Migration. In both cases, the BBC has quite clearly taken an editorial line that fundamentally reflects the liberal/left viewpoints of the people within it. Re the EU, anyone who openly advocated withdrawal was branded as a crackpot. And, as for immigration, anyone who even talked about the pace, levels and societal effects, of significant (and previously unexperienced) migration to this country, was labelled a 'racist". Even the BBC has admitted this bias.
To point to the fact that Nick Robinson used to be a Young Conservative is ridiculous. Dave, I will take your Nick Robinson and trump it with Ian Katz, recently appointed as Editir of Newsnight after many years as a senior editor at The Guardian (for what it's worth).