Before joining the team behind Thomas, John's first job was working for Cosgrove Hall on their project of "The Wind In The Willows" in the early 1980s.
During 2007, John went back to work on Thomas for the eleventh season and The Great Discovery. On his final years with Thomas, he designed the faces for Flora and Colin as well as sketched out the original face for Hank - with a moustache. After HiT requested a younger look for Hank, he redesigned Hank's face. He also designed Hiro who at the time was meant to have a different name and Victor and Kevin's faces. He also designed Hillside Mill.
- He and Matt Wilkinson both worked on "V for Vendetta".
- He and Nathan Clarke both worked on "Harry Potter and the Order of the Pheonix".