Steam Loco Design is led by consultant design engineer Ian Gaylor who has a lifetime of experience in both mechanical engineering design and steam locomotive operation. One-time Head of Mechanical Engineering at Cranfield Institute of Technology's Product Engineering Centre he is currently, in addition to his work with Steam Loco Design, a Senior Consultant with a leading European technology and management consultancy.

Ian has more than thirty-five years experience of working as a volunteer engineman on many lines including the Festiniog, West Somerset, Leighton Buzzard and Bure Valley Railways. Over the years he has been involved in many locomotive restoration projects, volunteering his engineering design expertise and skills as a fitter. He also has extensive experience of training footplate staff and has produced training materials which are in use at several lines.