Chancellor of the Exchequer Rachel Reeves rejected similarities between the UK government's efforts to cut costs and billionaire Elon Musk's approach in the US, where President Donald Trump has tasked him to head his administration’s new Department of Government Efficiency. "I think the comparison might end there. I'm not going to go troll presidents around the world," she joked, during a conversation with Bloomberg Editor-in-Chief John Micklethwait at Bloomberg House on the sidelines of the World Economic Forum’s annual meeting in Davos, Switzerland.