Quite a lot has been made of Liz Truss not attending the House of Commons to answer an urgent question from the Leader of the Opposition Keir Starmer on her decision to replace the Chancellor of the Exchequer. For example, Starmer accused her of "hiding away, scared of her own shadow", while Penny Mordaunt, who actually answered the question for the PM, told MPs that "the Prime Minister is not under a desk, as the hon. Lady suggests". Media reports are fairly damning as well - Metro accuses Truss of "refusing to answer", while the Independent says that she "dodged MP's questions".
As the Parliament.uk website explains:
If an urgent or important matter arises which an MP believes requires an immediate answer from a government minister, they may apply to ask an urgent question.
The relevant Government Minister has to come to the Chamber to explain what the Government is doing on the issue raised. The Minister will then usually take questions on the subject from MPs. The Department is also asked to provide a background briefing on the issue for the Speaker and declare any relevant interests.
However, I can't actually remember Boris Johnson ever answering an urgent question addressed to him while he was Prime Minister - as far as I remember they were usually answered by his ministers. Is that right? Is it actually that uncommon for a Prime Minister not to answer urgent questions addressed to them directly? When was the last time this happened?