London, UK. 19 October, 2019. Ian Blackford, Leader of the Scottish National Party in the House of Commons, addresses hundreds of thousands of pro-EU citizens at a Together for the Final Say People's Vote rally in Parliament Square as MPs meet in a 'super Saturday' Commons session, the first such sitting since the Falklands conflict, to vote, subject to the Sir Oliver Letwin amendment, on the Brexit deal negotiated by Prime Minister Boris Johnson with the European Union.