Tim Shipman, chief political commentator at The Sunday Times, joins Katy Balls to discuss his new book, Out: How Brexit Got Done and the Tories Were Undone. The final instalment in Shipman's Brexit quartet, the book goes behind the scenes in Westminster to reveal the warring factions at the heart of Boris Johnson's government. Considering all of this, has the Tory party left this era of controversy and backstabbing behind? Or, with a new leader, is there a whole new chapter to come?