Su McCormack is Managing Director of Tri-Coaching Partnership, which focuses on training and developing Approved Driving Instructors (ADIs), based in East Anglia, UK. A regular contributor to industry media, she has created several training courses, including the Pearson-accredited BTEC Level 4 in Coaching for Driver Development. She is the co-author of Practical Skills for Driving Instructors, also published by Kogan Page. John Miller was involved in the driver training industry for over 35 years, based in Chichester, UK. He was a qualified and experienced instructor trainer and LGV instructor. He was the author of Practical Skills for Driving Instructors, also published by Kogan Page.