London, March 25 -- Embattled Prime Minister Theresa May was scrambling Sunday to win over adversaries to her Brexit withdrawal plan as key Cabinet ministers denied media reports that they were plotting to oust her.

May spent the afternoon ensconced in a crisis meeting at her country residence Chequers with fellow Conservatives and outspoken Brexit advocates like Boris Johnson, Jacob Rees-Mogg and others who would prefer to leave the European Union without a divorce deal rather than delay Britain's departure from the bloc further.

Her office released a statement afterward giving no hint about whether she had gained any new backing. It said only that they discussed "whether there is sufficient support" to bring her Brexit divorce plan ba...