As an experienced police officer (retired) David teaches the development of policing from the formation of the Metropolitan Police in 1829 through to the complexities of modern day policing, discussing the political and social drivers that present the modern police recruit with so many challenges, and includes both the organisational pressures as well as the personal and family values that are frequently challenges in an ever expanding digital society. He also teaches students how modern day policing addresses the demands of the criminal use of the national roads network and how police officer together with many partner agencies try to maintain a focus on reducing serious road collision whilst disrupting and detecting the use of the roads network by serious and organised crime groups, exampled by county lines drug distribution and people trafficking. Through his experience interviewing both witnesses and suspects he also teaches students the foundation of the investigative interviewing models and theories, their application and importance to the investigative process and achieving best evidence to enable appropriate decisions to deliver successful outcomes.