This document provides an overview of the literature on the relationship between legal gambling and crime in the UK. It discusses how some studies have found a link between problem gambling and criminal behavior, with problem gamblers sometimes committing crimes to fund their gambling habits. However, the research overall has produced mixed results, with about half of studies finding a link between gambling and crime and half finding no effect. Limitations in the data available make it difficult to draw definitive conclusions. The document aims to further examine the relationship and potential mechanisms through which legal gambling may influence crime rates.