KSI on his journey from YouTube to the music charts, boxing and charity

KSI, otherwise known as 'JJ', became famous on YouTube nearly a decade ago with millions now subscribing to his channel. Since then, he has become well-known as a signer, a rapper and even a boxer. Krishnan speaks to him about his career as a musician, how boxing has helped him and how he deals with racism in the industry.  Producer: Rachel Evans