Whether May reinvents a Delivery Unit or not, she’ll need a mechanism for holding her Cabinet, and the wider Whitehall machine, to account. And if she chooses to wield them, the tools of delivery are now far more powerful than they were in Blair’s era. The vast oceans of data that exist within government are more easily tapped for insights than ever before. New techniques such as behavioural insights allow policymakers to “nudge” rather than shove. Digital technology can put people in control of services in ways hitherto considered impossible.