Episode 6

Meet the team of chemists pumping out paint and luxury wallpaper for the most discerning of DIYers. Learn how a homemade guitar amp changed the course of music history, overnight. See how frozen peas get from field to freezer, in a matter of hours. And discover how a team of expert pen makers are giving a WW2 fighter a new lease of life.

The show’s own verdict is on its page.