Champion joined BBC Sport in the late 1980s and worked as a football commentator on BBC Radio Five Live between 1992 and 1996. He worked alongside Alan Green, Mike Ingham, Ron Jones, Rob Hawthorne, and Jonathan Legard covering Premier League, FA Cup, League Cup, and Football League matches for the network. During this time, Champion commentated on the 1994 and 1996 First Division play-off Finals, and the 1996 UEFA Champions League Final between Juventus and Ajax. His fellow commentator on that evening was future ITV colleague Peter Drury.