Maitlis has form for this. Last September, the Brexit supporting journalist Rod Liddle appeared on Newsnight to talk about his new book. Instead Maitlis launched a frenzied, personal attack on him - I watched it. A complaint was upheld against her. Even the BBC concluded she was “sneering and bullying”, “too persistent and personal” and “failed to be even-handed”.

The BBC guidelines state ‘Our audiences should not be able to tell from BBC output the personal opinions of our journalists.’ Can anybody guess Emily's?