Why did No. 10 U-turn on the vote?

The government's response to Labour wanting to refer the Prime Minister to the Privileges Committee – who could then rule that he mislead the Commons – has been messy. At first, Conservative MPs were to be forced to vote with the government against the motion, but No. 10 then changed its position, saying it would be a free vote. Why the U-turn?

Cindy Yu talks to James Forsyth and Katy Balls.