Harrison is Sky Sports' widely-respected lead commentator - considered by many to be the best in the business. Like his illustrious predecessors, Harrison began his commentary career with BBC Radio, working on various sports, but opted for a move to Sky in 1994 where his career and reputation blossomed.

It was here he would form a notable partnership with former England international Stuart Barnes and together they benefitted from Sky's extensive rugby portfolio. Harrison has covered four British & Irish Lions tours, countless internationals and Heineken Cup Guinness Premiership Finals. So desirable were his services, he was even lent out to rival broadcaster ITV for their coverage of the 2007 Rugby World Cup.