Dr Jacqueline Bickerstaff is recognized by enthusiasts around the world as an authority on Vincent-HRDs, having been involved with the machines since her teenage years. She is a practicing electronics engineer, developing radar and satellite systems, and contributes to the motorcycle press as a freelance writer. She has served the Vincent-HRD Owners Club as technical officer and in other capacities. She own a number of Vincents and HRD motorcycles, from a 1926 side-valve to a 1953 cyclemotor, and a Vincent Rapide on which she has traveled over a quarter of a million miles.