Border poll must be part of any Brexit 'crash out', Sinn Féin says
Sinn Féin President Mary Lou McDonald tells Prime Minister Boris Johnson that a border poll must be considered in the event of a Brexit "crash out".
On Wednesday morning the PM began a series of meetings with the five main Stormont parties.
Mr Johnson met Sinn Féin first on Wednesday before talks with the smaller parties and further discussions with the DUP.