Jaimie is a small tank engine.
Jaimie came to Bigg City Port in 1932 when British Rail closed his old yard down. He is constantly seen pulling goods trains between Bigg City and Ggibs City, and he likes it very much. Jaimie can get a little proud of his maroon paint, but only when he has just been cleaned. He acts as a father-figure to Clark, and often helps him when the young engine breaks down.
Jaimie is loosely based on the L&YR's Pug class locomotives, but with three cylinders inside his frames, a double chimney, and American-style couplers for working on the docks.
Jaimie is based on L&YR Pug No.51232, a real engine based at Agecroft, England.