Simon Pegg has revealed that he kept his alcoholism secret on the set of Mission: Impossible.Speaking on BBC4’s Desert Island Discs recently, Pegg says that he hid his reliance on alcohol while on film sets in the early 2000s.“You become very sneaky when you have something like that in your life,” he told the show’s host, Lauren Laverne.He continued: “You learn how to do it without anyone noticing because it takes over. It wants to sustain itself and it will do everything it can to not be stopped…But eventually it just gets to a point when it can’t be hidden, and that’s when, thankfully, I was able to pull out of the dive.”Pegg had spoken before about how his mental health problems began after he experienced depression as a teenager after his A-level exams and before studying at the University of Bristol.It later returned unexpectedly in 2006, while he was working on Mission: Impossible III, and Pegg recalls using alcohol to help numb his pain.