His assistants are S Beck and S Rubery. The 4th official is G Scott.
Walton goes back a long time with the first City match I can find on record a 1 - 0 home defeat to Rotherham back in 1998. Also that year a 2 - 0 City win at Scunthorpe.
He has officiated many City games over the years including the opening game back at this level when City drew 0 - 0 with Rotherham at a baking hot Millmoor in August 2003. Also the League Cup tie at Anfield against Liverpool last season.
This season he's issued 36 yellow and 1 red card in 14 games. His last call of duty was at Old Trafford 10 days ago when Man Utd beat Stoke 5 - 0.