On 10 May 1940, Winston Churchill became Prime Minister of the United Kingdom following the resignation of Neville Chamberlain and his calamitous handling of the Norway campaign. On the same day, Adolf Hitler launched a monumental assault on Western Europe. It was the toughest first week in office a Prime Minister has ever faced. In this podcast, Dan visited the house of Churchill's biographer, Andrew Roberts, to look at some previously unseen historic material - a fascinating insight into the world of this remarkable man. 

© NPG