What's the Monarchy For?

David Dimbleby asks how far the royals will go to maintain public support

For a king or queen, what really matters is the impression they make on their subjects. He is joined by interviewees including Ian Hislop, royal aides and palace insiders to trace the moments when the Windsors lost control of their image, and asks how far they were willing to go to get the press and the public back on their side