Matt Ashby
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    • crimedata
    • crimemappingdata
    • sfhotspot
Matt Ashby

Matt Ashby

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I am an associate professor at the Jill Dando Institute of Security and Crime Science at University College London (UCL). I do research on how police can use data to reduce crime. I also run the CrimPapers journal-alerts service, and maintain the R packages crimedata and sfhotspot.

Recent blog posts

Pictures of 18 victims of homicide in England and Wales in 2021

Blog posts

Pictures of 18 victims of homicide in England and Wales in 2021

Homicide in England and Wales, Part 1: Homicide in Context
26 Jan 2026

Bar chart showing the number of homicide suspects in England and Wales by age, split into child and adult categories. The chart spans ages 10 to 85 and peaks at age 19, where over 70 suspects are recorded. A sharp decline follows into the late twenties, then gradually decreases with age. Very few suspects are aged over 60. Data source is the Home Office Homicide Index, including only cases where the suspect’s age was known.

Homicide in England and Wales, Part 3: Homicide offenders
26 Jan 2026
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Recent publications and reports

Title Date
Publications  
Is There More Violence Around Schools? Five Tests Across Nine Cities Aug 2026
Mapping current and potential criminal and security issues associated with climate change mitigation technologies Jul 2026
Patterns and trends in homicide in England and Wales and their implications for policing Aug 2025
Understanding changing demand for police during the coronavirus pandemic Apr 2025
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Recent talks

Title Date
Talks  
Estimating the effect of Europe’s largest street party on crime in London Sep 2026
Benchmarking crime in London against other global cities Nov 2025
Forecasting crime for strategic crime analysis: a comparison of methods Oct 2025
Problem solving for (crime) prevention Oct 2025
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CrimPapers

CrimPapers provides alerts for new articles published in over 100 criminology, criminal justice, crime science, penology and terrorism journals. Alerts are provided as a daily email update or an RSS feed.

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R packages

crimedata

The crimedata package provides access to a database of police-recorded crime data from large US cities, sourced from the Crime Open Database.

Find out more about crimedata …

crimemappingdata

The crimemappingdata package provides a variety of datasets that are useful in teaching crime mapping in R.

Find out more about crimemappingdata …

sfhotspot

The sfhotspot package provides functions for analysing hotspots and other concentrations of crime.

Find out more about sfhotspot …

Get in touch

matthew.ashby@ucl.ac.uk
+44 (0) 20 3108 3890
35 Tavistock Square, London, WC1H 9EZ
Book an appointment

 

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