• Data Analysis and Visualisation
• Business Intelligence dashboards and reporting
• Statistical Process Control
• Quality Improvement
• Public Health

Some tools I built in my own time for use in my job, and sharing to help other analysts in the NHS:

• runcharter or install from CRAN
• cusumcharter or install from CRAN
• spccharter

Some tools to solve problems that other analysts have raised:

• patientcounter : census tables without SQL
• dbexplorer : a shiny app to visualise your database tables
• juncture (this is a revision of {patientcounter})

Some R packages I built for fun:

• rockthemes
• popthemes
• metallicart

• johnmackintosh.net
• 
• 

• Metallica tour history with R and PowerBI
• new programming with data.table
• more .I in data.table
• .I in data.table
• non-equi joins in data.table