He qualified as a veterinarian in 1992 and worked in a large food animal clinic in Southern England for four years before moving to the Royal Veterinary College, Hertfordshire, where he spend three years as lecturer and head of the Large Animal Ambulatory Clinic. Since 1999 he has been in Wisconsin, providing a milk quality troubleshooting service to farms, teaching veterinary students, and developing research related to the influence of the environment on hoof and udder health.