As UK Prime Minister Boris Johnson struggles to deliver on his Brexit pledges, he has come to bitter verbal blows with ex-Tory minister brother Jo and writer sister Rachel, both ardent Remainers.

Axar.az reports citing foreign media that UK Prime Minister Boris Johnson announced at his Conservative Party's annual conference in Manchester he was tabling "constructive and reasonable proposals" to the European Union in the hopes that a Brexit deal could finally be achieved while revealing what he described as an "ace up my sleeve."

"I am going to quote that supreme authority in my family - my mother, and by the way for keen students of the divisions in my family on matters of the EU, I want you to know that I have kept the ace up my sleeve - my mother voted leave," he said on Wednesday.

As UK Prime Minister Boris Johnson is poised to unveil his Brexit plans for a new deal with the EU expected to bypass the contentious Irish backstop issue, his own family has reportedly suffered a bitter schism over Brexit.

Johnson publicly lashed out at his own sister Rachel Johnson on BBC News on 1 October, dismissing her claims that he was pursuing a No Deal Brexit to satisfy his Tory donors as “absolutely nonsense.”