Waheed Arian spent his childhood fleeing the war zones of Afghanistan. After recovering from an almost fatal illness at a Pakistan refugee camp as a child, he set his sights on becoming a doctor. Putting his life in the hands of people smugglers, Waheed eventually reached the UK and studied medicine at Cambridge. He now saves lives as an NHS A&E medic and is the founder of charity, TeleHEAL, providing volunteer medical support to people around the world. His book, In the Wars is out now.