The shadow foreign secretary condemns Boris Johnson as "utterly unsuited" to the job of prime minister.
BBC News Brexit
Explainers & background
BBC News NI political correspondent
The shadow Northern Ireland minister Stephen Pound has warned that the Good Friday peace agreement would be "dead" that if there is a hard Irish border watched by CCTV cameras after Brexit.
The Labour MP was speaking at a fringe event organised by Sinn Féin at the Labour Party conference in Brighton.
"If you put a camera on a pole you create a target - you have to defend that," he said.
"If you defend that you then have to defend the defenders. And where are we? After that the Good Friday Agreement is dead."
His comments come after the Sinn Féin vice-president Michelle O'Neill said a vote on Irish unity should be held in the event of a no-deal Brexit.
The shadow chancellor says he will back Remain in a public vote, but supports his leader's promise to offer the public a Labour-negotiated option to leave as well.
The shadow chancellor says his party is having an "honest, democratic debate" over Brexit.
From "you're all on monkey dust" to "Brexit capital", young people are tired of Stoke-on-Trent's labels.