Born in Leeds in the mid-1940s, Roger Seniour spent the first eleven years growing up around the vast array of railway lines and depots in the Leeds area. At fifteen, he began a seven-year apprenticeship as an Electrical Engineer, learning how to repair electric motors, transformers, and industrial wiring. In 1968 he found employment within the railway, and was eventually promoted to Technical Riding Inspector, which lasted for sixteen years, before finishing up as the Resident Engineer for the MK1V fleet of vehicles.