Sharman was born and raised in Hackney, London. He started acting as a child at the age of nine when he auditioned for the Royal Shakespeare Company and was selected out of hundreds of other children. "I just adored it," he said of his venture into the dramatic arts. "Between Macbeth and Henry VI with all of the armour and the blood and everything, it was just fantastic as a kid. It was the best thing ever." Sharman stayed with the Royal Shakespeare Company for two plays: The Park in 1995 (age 9) and Macbeth in 1996 (age 10).
Sharman attended Mill Hill School and also the Arts Educational School, both in London. During his school years, he acted in the play "Kvetch" that made it to the Edinburgh Fringe festival. He also acted in the touring play The Winslow Boy in 2002 at age 16.
For three years, from 2004 to 2007, Sharman studied at the London Academy of Music and Dramatic Art, gaining a Bachelor of Arts degree in acting and graduating with honors. After that, he performed in many theatrical productions in London and Europe.
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