SAS: Who Dares Wins star Ollie Ollerton has opened up about his decision to go sober, revealing that one of the scariest things about giving up alcohol was that he “never knew” who he was without booze. During an interview with OK!, the former Special Forces soldier spoke about his sobriety and how he transformed his relationship with alcohol thanks to the hit Channel 4 show. “The biggest thing for me was that I never knew who I was.