The government and Labour are "testing out" each other's ideas as they try to resolve the Brexit deadlock, cabinet minister David Lidington has said. He said they had a "fair bit in common" over future customs objectives but further compromise was needed.
While there was no deadline, he said the sides would "take stock" in 10 days and the process could not drag out. But former Conservative leader Iain Duncan Smith said the process was a "recipe for disaster" for his party.
He called for Prime Minister Theresa May to make way for a new Conservative leader next month - but Mr Lidington insisted changing PM would "not change the arithmetic in Parliament".
Talks between the government and Labour are set to continue over the Easter parliamentary recess in the hope of finding a Brexit agreement that will be acceptable to MPs. A series of working groups in key areas, such as environmental standards, security and workers' rights, have been set up to try and find common ground.
The EU has insisted the terms of the UK's withdrawal, rejected three times by MPs, cannot be renegotiated - but there is scope to strengthen the political declaration, a document setting out the parameters of the UK's future relations with the EU, ahead of the new Brexit deadline of 31 October.