Maya Lester QC is acting for the petitioners (MPs) in the expedited reference to the European Court of Justice from the Scottish Court of Session in Wightman and others v Secretary of State for Exiting the European Union.  The hearing is on Tuesday 27 November before the full court of the CJEU. The issue is whether the UK can revoke the notification of its intention to withdraw from the EU under Article 50 of the Treaty if there is a democratic decision to remain in the EU before the end of the two year negotiating period in March 2019, or whether it needs the unanimous consent of the 27 other Member States to do so.