Broadcaster and author Iszi Lawrence chooses the aviator Diana Barnato Walker. Coming from a privileged background, Diana used her pocket money to take flying lessons, flew bombers during World War II, and - aged 45 - became the first British woman to break the sound barrier. Iszi is joined by Giles Whittell, author of Spitfire Women of World War II, and Diana’s son Barney Walker.

Presented by Matthew ParrisProduced in Bristol by Beth Sagar-Fenton