KEY POINTS
  • Prime Minister Theresa May managed to convince EU leaders to grant the U.K. more time before it leaves the bloc.
  • Experts say her days in office are now numbered.
  • A leadership challenge or general election could follow, analysts predict.
Theresa May, U.K. prime minister, leaves a news conference following a European Union leaders summit in the Europa building in Brussels, Belgium, early on Thursday, April 11, 2019.

Prime Minister Theresa May managed to convince EU leaders to grant the U.K. more time before it leaves the bloc, but experts say her days in office are now numbered.

"A six-month period is clearly enough for the Conservative Party to contemplate a change in leadership while still allowing some time for the incoming PM to seek to negotiate with the EU," J.P. Morgan economist Malcolm Barr said in a research note Thursday.