D. in Criminology from University College London (UCL) and an associate professor at the same institution, Spencer Chainey is a specialist in crime analysis with more than 20 years of experience in the development of scientific research and the design and implementation of intelligence-informed, problem-solving, evidence-based policing strategies.

Chainey is one of the world's leading experts in the field of crime mapping and author of major published works in this area (in particular, the book on "GIS and Crime Mapping", co-authored with Jerry Ratcliffe).

In this video produced for the Criminal Analysis Techniques series of the Evidence Platform, the specialist explains how to use Kernel Density Estimation, a mapping technique used to visualize crime hot spots.