Catch up on Representing Border Tuesday 17th December

The end of double-jobbing. Holyrood votes to block MSPs from sitting at Westminster as well as the Scottish Parliament. Also tonight, will ministers' decision to ban the use of WhatsApp for official business help restore public trust in government, after the COVID messages deletion row? And as Humza Yousaf announces he'll step down at the next election - we ask our commentators what next for the former first minister?