Principal Consultant, Forensic Collision Investigation & Reconstruction Ltd
Stephen has worked within the field of forensic collision investigation for nearly 20 years. Having initially trained as an engineer, he started his career in the field as a Police Forensic Collision investigator within the Metropolitan Police Service. Since 2015 Stephen has been practicing on a consultancy basis and his workload quickly became dominated by instructions stemming from high-value catastrophic personal injury claims – instructions that have taken him around Europe.
In an effort to keep ahead of the science involved in the discipline, Stephen has worked with engineers in the development of the algorithms that are driving some of the prototype autonomous vehicles that are currently being tested on the road today. From an engineer’s perspective, Stephen is all but too aware of the detrimental effects that changes in vehicle design are having on methods routinely employed by Collision Investigators in the reconstruction of collisions. It is this underlying ethic that motivates him overall in his approach to research in the field. This research has led to the publication of the following peer reviewed texts:
- Calculating Vehicle Speed from Yaw Mark Analysis – Proceedings of ITAI International Conference 2014 (Solihull)/ EVU Conference 2015 (Edinburgh).
- Video Analysis in Collision Reconstruction: ISBN 978-1-78808-930-2 (2017)
- Video Analysis in Collision Reconstruction – Second Edition: ISBN 978-1-80068-963-3 (2023)
- Positioning Techniques in CCTV Analysis – Proceedings of ITAI International Conference 2017 (Hinckley).
- The Effects of Road Surface Technology on Vehicle Deceleration Calculations – Proceedings of ITAI International Conference 2017 (Hinckley).
- Collision Investigation: CCTV Playback & Validation Using a Lightboard – Impact, The Journal of the Institute of Traffic Accident Investigators (Winter 2017).
The sheer volume of video evidence that Stephen was routinely handling whilst employed by the Metropolitan Police led to a majority of these publications, and over time his development in this very specialised discipline has led to him becoming a leading figure in the field of video analysis. As a result, today Stephen routinely trains collision investigators both nationally and internationally, sharing his experience and knowledge of this subject with student that range from Police Collision Investigators to Government Scientists.