On the news that the ECJ has ruled that Article 50 may be withdrawn by a Member State, Alyn Smith Greens/EFA (SNP) MEP and co-litigant on the case comments:
"Today's ruling sends a clear message to UK MPs ahead of tomorrow's vote that there is a way out of this mess. A light at the end of the tunnel for the economy, for jobs and for the UK's standing on the world stage. Now it's up to the UK.
"If the UK chooses to change their minds on Brexit, then revoking Article 50 is an option and the European side should make every effort to welcome the UK back with open arms."