Wholly unprepared for what was the world's first broadcast war, the BBC fended off complete government takeover and emerged a trusted global news source, transmitting in 47 languages. Using a wealth of preserved recordings and previously unseen documents, Jonathan Dimbleby uncovers the compelling story of how the BBC went into battle - against Hitler and Whitehall's ministers - and its part in the social revolution the war provoked.

• Jonathan Dimbleby

• Pip Torrens
• Winston Churchill
• William Joyce