KSI: 'At 25, I realised if I retired I would be so bored'   

As internet phenomenon KSI, the London-born Olajide Olatunji has amassed millions of followers through his YouTube pranks, high-profile boxing matches, and chart-topping records. A new streaming documentary takes us behind us the scenes on his life 

KSI is the subject of a forthcoming documentary on Amazon Prime. Picture: Ian West/PA 

Since signing up to a fledgling platform called YouTube in 2009 and beginning his remarkable journey towards 24 million subscribers, KSI has had creative control of his videos. But that all changed in 2021 when he agreed to take part in an intimate Amazon documentary about his life.

Suddenly the camera turned on him and he had nowhere to hide. The result is a searingly honest portrait of a young man at the height of success yet teetering on the edge in his personal life.