Jem Cole says he never drove a better engine!
He was Trevor's driver prior to the traction engine being sent to Crocks Scrap Yard to be cut up. After Edward convinced the Vicar of Wellsworth to help save Trevor, Jem restored and demonstrated him to the Vicar and his two sons. Thankfully, the Vicar was able to buy Trevor for cheap and continued to hire Jem's services as a driver and mechanic whenever one was required. He also tutored the Vicar's eldest son on how to drive and maintain Trevor.
Jem, along with Farmer Trotter and others, was a part of the rescue team which found Duke. He seems to be very knowledgeable about road steam traction, as he has also driven George. Jem Cole is a skilled mechanic, as shown when he restored Elizabeth and an old narrow gauge coach into a Refreshment Coach. As of the eleventh series, he appears to be working as a farmer and has grown a grey beard. In the fifteenth series, he was seen fishing with a little boy in the Whistling Woods; this could possibly be his son or grandson. In Day of the Diesels, he helped to extinguish a fire at a barn. In the sixteenth series, he helped to put out another fire, this one being at Sir Topham Hatt's Shed.
He has previously worked as a railway ganger.
In the Thomas Saves the Day PC game, he owns a work shed at the bottom of Gordon's Hill, where Elizabeth rests.
Jem Cole is a warm, loving father-figure when looking after Trevor. But when it comes to farming, he can be a strict handyman just to insure the job gets done professionally and flawlessly.
He dresses in typical farmer clothing with a brown fedora, a red-orange vest, white button down shirt, brown trousers and black rubber boots.