Rishi Sunak has been told to launch an investigation after a claim the Tory Party received a formal complaint of alleged "threatening" behaviour by Gavin Williamson, which he is said to deny.
Sir Gavin, who was sacked from both Boris Johnson and Theresa May's cabinets, was brought back into Government when Mr Sunak entered No10 last week.
But according to Tortoise a complaint has been submitted regarding Mr Williamson's conduct to Tory headquarters.