Ruth Davidson is set to quit as leader of the Scottish Conservative Party, according to The Sun.
Ms Davidson, who had a baby in October 2018, is standing down because of tensions with Boris Johnson over a no-deal Brexit, sources told the BBC.
Other sources cited the ‘pressures of motherhood’ as her reason for standing aside.
A statement confirming the news is thought to be taking place tomorrow.
Ms Davidson has repeatedly spoken out against a no-deal Brexit, warning in July she could not support a Government which was pursuing no deal.
During the Conservative leadership election the Scottish Tory leader made it clear she did not think Mr Johnson was a suitable candidate for the top job.
She threw her support behind Mr Johnson’s leadership rival Jeremy Hunt, saying he was the candidate most likely to ‘always put the union first’.
She wrote earlier this year: “I hope beyond measure the new Prime Minister is successful in getting an agreement with the EU so he can go back to the House of Commons and get the majority backing he needs. He has my full support in those efforts.
“Where I differ with the UK Government is on the question of a No Deal Brexit.
“When I was debating against the pro-Brexit side in 2016, I don't remember anybody saying we should crash out of the EU with no arrangements in place to help maintain the vital trade that flows uninterrupted between Britain and the European Union.
“I don't think the Government should pursue a No Deal Brexit and, if it comes to it, I won't support it.
“I wrote to tell the former prime minister Theresa May that last year and I confirmed my position to her successor when I spoke to him last week.”
The Prime Minister today confirmed he will suspend Parliament from mid-September until mid-October, a move widely seen as an attempt to block rebel MPs from standing in the way of a no-deal Brexit.