This week's Book Club podcast celebrates the 75th anniversary of the publication of Nancy Mitford's breakthrough novel The Pursuit of Love. Laura Thompson, author of the biography Life In A Cold Climate, joins me to talk about the way the book was written, how it helped create the Mitford myth - and how it shaped an enduringly ambivalent story of familial happiness and 'true love' from the sometimes heartrending materials of the author's own life.