theresa may

May had been under intense pressure from lawmakers to step down after her plans for Brexit were repeatedly rejected. Conservative lawmakers will now begin to consider her replacement.

Lawmakers will vote on whether to postpone Brexit beyond the March 29 departure date, but there could be a hitch. Here's what to know.

Lawmakers resoundingly said no to the prime minister's proposed agreement with the European Union. With the deadline for Brexit just 10 weeks away, what happens now is anyone's guess.

"If we held the vote tomorrow, the deal would be rejected by a significant margin," the U.K. prime minister admitted, hours after a European Union court ruled the U.K. can still back out of Brexit.

EU leaders have called off a planned November summit on the next phase of Brexit discussions because of a lack of progress.

"At this moment of enormous national significance, there should be unity here in Westminster," Theresa May said in the surprise announcement, as the U.K. prepares to leave the European Union.

The British prime minister said in a speech on Tuesday that she plans for the United Kingdom to walk away from the European Union's single market and unified court system.