Mason attended the Liverpool Institute of Higher Education between 1990 and 1993, living in Newman Hall, where he gained his degree. Whilst there he played for his college football team as well as being a regular compere, hosting a variety of social events at a students' union club.
Career
Mason took up the whistle in 1988, officiating in the Bolton Boys' Federation League. He previously worked in the car rental industry. In 1992 he was added to the North West Counties Football League assistant referees' list, and progressed to referee in that league four years later. He was included on the Football League list of assistant referees in 1998, and was added to the Premier League assistant referees' list in 2000.