From Hertfordshire, 38 year old Keith has been refereeing since he was fourteen, and started locally.
He was promoted to the National List of Assistant referees in 1994 from the Hertfordshire Senior and Southern Leagues.
After serving a further three seasons as a SG assistant referee he was promoted to the Referees List in 1998.
His appointments up to date include refereeing a semi-final of the FA Trophy, and being appointed as 4th Official on the 2002 Game of Unity in Kabul.
Last season he was the referee in the Millers 2-1 home win over Chesterfield.
This season in the 17 games he has taken charge of Keith has issued 59 yellow and 2 red cards.
Running the lines will be Wayne Grunnill (E. Yorkshire) along with Tony Harrington (Cleveland)
The Fourth Official will be Nigel Murphy (Nottinghamshire)