He is known for being the winner of the first season of History Channel's marksmen competition Top Shot and the current editor of RECOIL.
He moved to the United States and started working as a construction manager in Sherwood, Oregon after being forced to surrender his guns to the UK government, while pursuing competitive shooting.
[4] In 2010, Harrison appeared in the first season of History Channel's marksmen competition Top Shot.
His team ended up winning six challenges, and Harrison was only nominated for elimination once during that period.
A $5,000 donation was made to a charity selected by the captain of the winning team, and Harrison chose the Wounded Warrior Project.