Career
An Ireland international representative back row forward, he has played his entire career to date at Warrington, winning the 2009 Challenge Cup with them. He started his rugby career playing for Chetwynde School and is now a rugby league player for Warrington in the European Super League. His position of choice is as a prop, but he can also play in the second-row.
In 2007, he spent a month on loan at Widnes Vikings.
He represented Ireland in the 2008 Rugby League World Cup. Harrison played for Warrington in the 2010 Challenge Cup Final victory over Leeds.