Labour is set to appoint ex-Labour deputy leader Harriet Harman to chair Parliament’s Privileges Committee investigation into whether the PM misled the Commons over Partygate. The vacancy was created when Chris Bryant stepped down because he didn’t want the investigation to look biased. Guido’s not sure whether any Tory in the country is going to accept Harman’s judgements as politically neutral…

If Labour goes ahead with the bizarre appointment, not only will the PM be judged by someone equally as biased as Bryant, having called for the PM to quit, it’ll be one of the few Labour MPs who’s racked up more Fixed Penalty Notices than Boris. As Guido pointed out when Harman accused the PM of breaking the laws he made, she was charged with three speeding offences during her time as a minister…

It may not matter either way: the Telegraph reports some believe even if found guilty the PM could avoid a by-election, given the 2015 legislation only applies to suspensions handed out by the Standards Committee – not the Privileges Committee. The greased piglet won’t stop wriggling…