Dr Arian fled the war in Afghanistan at the age of 15 and travelled to London. He won a place at Cambridge University and studied medicine, qualifying as a doctor. Just two years from becoming a consultant in radiology, he chose to take a career break so he could help those back home. He has established a network of around 100 volunteer doctors and consultants in the West, who give free advice to hospitals in war zones, by text, What’s App, Skype and email.