MPs who want to stop a no-deal Brexit will seek to bring forward legislation against it this week, shadow Brexit secretary Sir Keir Starmer has said.
He said the plan was to prevent the PM “from taking us out of the EU without a deal” but he did not go into detail.
Cabinet minister Michael Gove refused to guarantee that the government would abide by it if passed, saying: “Let’s see what the legislation says.”
The government is “not doing anything to facilitate a no deal”, he said.
Meanwhile, the EU’s lead Brexit negotiator has rejected Boris Johnson’s demands for the controversial Irish backstop to be scrapped.
The UK is due to leave the EU on 31 October, with or without a deal.
Sir Keir told the BBC’s Andrew Marr Show: “The legislation is intended to ensure we don’t leave without a deal, that will require an extension.
“The length of the extension is secondary, frankly. We have simply got to stop us leaving without a deal.”
Labour’s shadow chancellor John McDonnell told Sky’s Sophy Ridge on Sunday that the legislation will be published on Tuesday.
He said the “ultimate goal this week” was to “ensure Parliament can have a final say”.
But when asked if the government would abide by legislation preventing a no-deal Brexit, Chancellor of the Duchy of Lancaster Mr Gove told the BBC’s Andrew Marr Show: “Let’s see what the legislation says.
“You’re asking me about a pig in a poke.
“And I will wait to see what legislation the opposition may try to bring forward.”
