Paralympic swimmer Kate Grey hasn't used her plastic NHS-issue prosthetic arm for years. In the pool, it got in the way. Now she's taken up cycling, she needs a new limb to replace the hand she lost in a sausage machine at her grandparents' farm when she was two. Through her own story, Kate explores the world of prosthetic inventors. She tries out the latest 3D-printed bionics being pioneered by West Country inventors, as well as the first prosthetics manufactured by Chard shoemaker James Gillingham 150 years ago, and explores how x-rays, also pioneered in Chard, helped revolutionise medical care for amputees.