This is meant to be a show of strength, but most people have literally never heard of the four MPs who have lost the Labour whip. That's just the first reason deputy political editor Sam Coates is confused by the PM's move.
Number 10 wants to show rebelling comes at a price - but many Labour MPs with concerns about their political direction will want to know the prime minister is planning to listen to concerns before it gets to that point.
Brian Leishman, Chris Hinchliff, Neil Duncan-Jordan and Rachael Maskell will now sit as independent MPs after losing the whip. All four voted against the government's welfare reforms earlier this month.
It's been three years since a British official accidentally shared emails that potentially put up to 100,000 Afghan nationals in danger. Here's what's been happening behind the scenes.
Almost 7,000 Afghan nationals are being relocated to the UK as a result of the breach by the British military, with the personal information of close to 20,000 individuals who helped or worked with UK forces being exposed.