Erriyon Knighton has big goals for the future - breaking Usain Bolt's 200m world record is one of them. "That's what I constantly think about.... Just trying to be number one on the list all the time and I think that's what that's gets me going is just wanting to be the world record holder," the fastest teenage 200m runner on the planet tells us. Find out what else the rising star has revealed in our chat.