On 18 June 1940, with France collapsing and Britain seemingly standing alone against Nazi Germany, Winston Churchill delivered one of the most famous speeches in modern history: ”Their Finest Hour”.

In this episode, Antonia Senior and historian Roger Moorhouse revisit the speech that became synonymous with British defiance. What was Churchill trying to achieve? Who was he speaking to? And how persuasive was his message to those living through the crisis of 1940?

The conversation explores the political context of the speech, the arguments for and against fighting on, Churchill's appeal to American opinion, and the uncomfortable question of whether Britain's eventual victory justified the enormous sacrifices that followed.

Along the way, Antonia and Roger discuss Churchill's reputation as an orator, contemporary reactions to the speech, the threat posed by Nazism before the Holocaust was fully understood, and the enduring tension between heroic national myth and historical reality.

Books discussed:

• The Roar of the Lion – Richard Toye

• Churchill: Walking with Destiny – Andrew Roberts

• Fateful Choices: Ten Decisions That Changed the World, 1940–1941 – Ian Kershaw

Was this truly Britain's finest hour—or is that a story we have told ourselves ever since?