In this episode, we talk to political journalist Seb Whale about his new book, The Usual Channels, which reveals the hidden world of Westminster’s whips. Seb charts how party discipline has evolved – from the stormy politics of the 1970s and the Maastricht battles of the 1990s to the legendary “black book,” the Brexit showdowns and the short-lived Liz Truss premiership. He explains how the whips’ office has adapted to a modern Parliament – especially with the influx of women MPs – and why, even today, whips still wield decisive influence over MPs’ careers and remain indispensable despite the pressures of contemporary politics. Please help us by completing our Listener Survey. It will only take a few minutes.