Veteran British MPs from the ruling Conservative and opposition Labour parties have both said they would be willing to lead an emergency government to halt a no-deal Brexit, the leader of the pro-EU Liberal Democrats says.
The suggestion that Conservative Ken Clarke or Labour's Harriet Harman - parliament's longest-serving man and woman - could take charge was the latest sign that one group of foes of an abrupt exit from the EU is joining forces to unseat Boris Johnson to stop it.
British Prime Minister Boris Johnson. Source: Getty Images Europe
Johnson, who became prime minister last month after winning a vote among Conservatives for party leadership, says Britain must leave the EU on October 31 with or without a deal.
But he has a working majority of just a single seat in parliament and several of his own Conservatives have suggested they could vote no confidence in his government to stop a no-deal Brexit they believe would be disastrous for the economy.
Anti-Brexit politicians have yet to settle on a strategy for what would happen next.
The main opposition Labour Party's leader, Jeremy Corbyn, wants a caretaker government with himself as head, and then an election.
Labour's Jeremy Corbyn believes he has what it takes to lead a caretaker government. Source: Getty Images Europe
But other opponents of a no-deal Brexit worry that Corbyn, a staunch leftist, would not have enough support from other parties to form a government.
Jo Swinson, leader of the centrist pro-European Union Liberal Democrats, has proposed a caretaker government led by either Clarke or Harman, former cabinet ministers from the more centrist wings of the two main parties.
On Friday, Swinson told BBC radio she had spoken to them and both said they would be willing to serve.
"They put public duty first and they don't want to see a no-deal Brexit," Swinson said. "If the House of Commons asks them to lead an emergency government to get our country out of this Brexit mess and to stop us driving off that cliff to a no deal, then yes, they are prepared to do that."
Clarke is the longest-serving member of parliament and held senior cabinet positions under Margaret Thatcher, John Major and David Cameron. Harman is parliament's longest-serving woman and was briefly Labour's acting leader before Corbyn took charge.
Clarke later confirmed he would be willing to serve as a temporary prime minister to block a no-deal Brexit.
"If it was the only way in which the plain majority of the House of Commons that is opposed to a no-deal exit could find a way forward ... I wouldn't reject it," he told the BBC.
With Johnson staking his premiership on Brexit, the EU refusing to reopen a previously-negotiated withdrawal deal and a majority of MPs opposed to both a no-deal divorce and the negotiated deal, Britain is heading for a parliamentary showdown and constitutional crisis.
Corbyn said that by convention when a government collapses the leader of the main opposition party is called upon to form a government.
"The principle is that the Labour Party is the main opposition party, we've an aspiration to go into government.... We are ready to serve," he told the BBC.
He said "all those people that are now making lots of noises in the media" should support Labour's motion as the best way to prevent a no-deal Brexit.
Chancellor of the Exchequer Sajid Javid. Source: Getty Images Europe
Finance minister Sajid Javid said after meeting his German counterpart for the first time on Friday that Britain would be ready on October 31 for a no-deal Brexit, if that was unavoidable.
Labour wants a vote of no-confidence in the government shortly after parliament returns from its summer break on September 3.
