蜜芽传媒

For Radio 4's The World at One, Emma Jane Kirby has been driving around the UK with the 1939 Penguin county touring map guides.

This time, she reports on how Derbyshire has changed since World War II.

Architectural historian Clare Hartwell says today's Matlock reflects a "modern day conservation planning policy".

(Image: Matlock skyline in Derbyshire, credit: 蜜芽传媒)