Darren England, whose eight games have come in League One, League Two and in the Football League Trophy, produced the highest number of cards per game, averaging 5.25 cards per appearance. So far this season, he has produced 40 yellow and two red cards.
Top flight referee Martin Atkinson, who has produced more yellow cards this season (56) than any other official, comes second, averaging 5.09 cautions per game and Trevor Kettle comes in third with an average of five per match.
Graham Salisbury has dished out more red cards than any other referee this season, having produced five reds in 11 games, almost one every second match.
Statistically least likely to reach for his black book this season is Lee Collins, who issued just one yellow card - to Sheffield United’s Kieron Freeman - during his only fixture in charge.
Full statistics are available at http://www.soccerbase.com/referees