Scotland's First Minister Nicola Sturgeon, right, shakes hands with Britain's Prime Minister Boris Johnson, outside Bute House, ahead of their meeting, in Edinburgh, Scotland, Monday July 29, 2019. Johnson made his first official visit as British prime minister to Scotland, pledging to boost "the ties that bind our United Kingdom" amid opposition from Scottish leaders to his insistence on pulling Britain out of the European Union with or without a deal. (Jane Barlow/PA via AP)
Scotland's First Minister Nicola Sturgeon, right, shakes hands with Britain's Prime Minister Boris Johnson, outside Bute House, ahead of their meeting, in Edinburgh, Scotland, Monday July 29, 2019. Johnson made his first official visit as British prime minister to Scotland, pledging to boost "the ties that bind our United Kingdom" amid opposition from Scottish leaders to his insistence on pulling Britain out of the European Union with or without a deal. (Jane Barlow/PA via AP) Credit: Jane Barlow

Prime Minister Boris Johnson pushed Britain closer to a no-deal exit from the European Union on Monday, insisting he will not hold Brexit talks with EU leaders unless the bloc lifts its refusal to reopen the existing divorce deal.

Johnson is trying to pressure the EU to give ground by intensifying preparations for the U.K. to leave in three months without a withdrawal agreement.

But the pound fell to a two-year low as business groups warned that neither Britain nor the EU is ready for a no-deal Brexit, and that no amount of preparation can eliminate the economic damage if Britain crashes out of the 28-nation trading bloc without agreement on the terms.

Johnson became prime minister last week after winning a Conservative Party leadership contest by promising the strongly pro-Brexit party membership that the U.K. will leave the EU on the scheduled date of Oct. 31, with or without a divorce deal.

The EU struck a withdrawal agreement with Johnson’s predecessor, Theresa May, but it was rejected three times by Britain’s Parliament. Johnson is insisting the bloc make major changes to May’s spurned deal, including scrapping an insurance policy for the Irish border that has been rejected by U.K. lawmakers.

“The withdrawal agreement is dead, it’s got to go,” Johnson said Monday as he visited a submarine base in Scotland. “But there is scope to do a new deal.”

He said he was “very confident” of getting a new agreement, even though Britain is due to leave the EU in less than 100 days, and the EU insists it won’t reopen negotiations or remove the border “backstop.”